Toshiba e-studio2330c User manual

SERVICEMANUAL
MULTIFUNCTIONAL DIGITAL COLOR SYSTEMS
e-STUDIO2330C/2820C/2830C
e-STUDIO3520C/3530C/4520C
Model:FC-2330C/2820C/2830C/3520C/3530C/4520C
Publish Date: March, 2008
File No. SME070008E0
R070921E3500-TTEC
Ver05_2009-01

Trademarks
• The official name of Windows 95 is Microsoft Windows 95 Operating System.
• The official name of Windows 98 is Microsoft Windows 98 Operating System.
• The official name of Windows Me is Microsoft Windows Millennium Edition Operating System.
• The official name of Windows 2000 is Microsoft Windows 2000 Operating System.
• The official name of Windows XP is Microsoft Windows XP Operating System.
• Microsoft, Windows, Windows NT, Windows Vista and the brand names and product names of other
Microsoft products are trademarks or registered trademarks of Microsoft Corporation in the U.S.
and/or other countries.
• Apple, AppleTalk, Macintosh, and Mac are trademarks of Apple Computer, Inc. in the U.S. and other
countries.
• PostScript is a trademark of Adobe Systems Incorporated.
• NOVELL, NetWare, and NDS are trademarks or registered trademarks of Novell, Inc.
• FLOIL is a registrated trademark of Kanto Kasei Ltd. CORPORATION
• Mylar is a registered trademark of DuPont Teijin Films U.S. Limited Partnership.
• Molykote is a registered trademark of Dow Corning Corporation.
• Other company names and product names in this manual are the trademarks of their respective
companies.
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
Under the copyright laws, this manual cannot be reproduced in any form without prior written permission
of TOSHIBA TEC CORPORATION. No patent liability is assumed, however, with respect to the use of the
information contained herein.

GENERAL PRECAUTIONS REGARDING THE SERVICE FOR
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
The installation and service should be done by a qualified service
technician.
1. Transportation/Installation
- When transporting/installing the equipment, employ four persons and be sure to hold the
positions as shown in the figure.
The equipment is quite heavy and weighs approximately 121 kg (266.75 lb.) or 123 kg (271.16
lb.), therefore pay full attention when handling it.
- Be sure not to hold the movable parts or units (e.g. the control panel, ADU or RADF) when
transporting the equipment.
- Be sure to use a dedicated outlet with AC 110 V / 13.2 A, 115 V or 127 V / 12 A, 220-240 V / 8 A
for its power source.
- The equipment must be grounded for safety.
- Select a suitable place for installation. Avoid excessive heat, high humidity, dust, vibration and
direct sunlight.
- Provide proper ventilation since the equipment emits a slight amount of ozone.
- To insure adequate working space for the copying operation, keep a minimum clearance of 80
cm (32”) on the left, 80 cm (32”) on the right and 10 cm (4”) on the rear.
- The equipment shall be installed near the socket outlet and shall be accessible.
- Be sure to fix and plug in the power cable securely after the installation so that no one trips over
it.
- If the unpacking place and where the equipment is to be installed differ, perform image quality
adjustment (automatic gamma adjustment) according to the temperature and humidity of the
place of installation and the paper to be used.

2. General Precautions at Service
- Be sure to turn the power OFF and unplug the power cable during service (except for the service
should be done with the power turned ON).
- Unplug the power cable and clean the area around the prongs of the plug and socket outlet once
a year or more. A fire may occur when dust lies on this area.
- When the parts are disassembled, reassembly is the reverse of disassembly unless otherwise
noted in this manual or other related documents. Be careful not to install small parts such as
screws, washers, pins, E-rings, star washers, harnesses in the wrong places.
- Basically, the equipment should not be operated with any parts removed or disassembled.
- The PC board must be stored in an anti-electrostatic bag and handled carefully using a wristband
since the ICs on it may be damaged due to static electricity.
- Avoid expose to laser beam during service. This equipment uses a laser diode. Be sure not to
expose your eyes to the laser beam. Do not insert reflecting parts or tools such as a screwdriver
on the laser beam path. Remove all reflecting metals such as watches, rings, etc. before starting
service.
- Be sure not to touch high-temperature sections such as the exposure lamp, fuser unit, damp
heater and areas around them.
- Be sure not to touch high-voltage sections such as the chargers, transfer belt, 2nd transfer roller,
developer, high-voltage transformer, exposure lamp control inverter, inverter for the LCD
backlight and power supply unit. Especially, the board of these components should not be
touched since the electric charge may remain in the capacitors, etc. on them even after the
power is turned OFF.
- Make sure that the equipment will not operate before touching potentially dangerous places (e.g.
rotating/operating sections such as gears, belts pulleys, fans and laser beam exit of the laser
optical unit).
- Be careful when removing the covers since there might be the parts with very sharp edges
underneath.
- When servicing the equipment with the power turned ON, be sure not to touch live sections and
rotating/operating sections. Avoid exposing your eyes to laser beam.
- Use designated jigs and tools.
- Use recommended measuring instruments or equivalents.
- Return the equipment to the original state and check the operation when the service is finished.
- Be very careful to treat the touch panel gently and never hit it. Breaking the surface could cause
malfunctions.
3. Important Service Parts for Safety
- The breaker, door switch, fuse, thermostat, thermofuse, thermistor, IC-RAMs including lithium
batteries, etc. are particularly important for safety. Be sure to handle/install them properly. If
these parts are short-circuited and their functions become ineffective, they may result in fatal
accidents such as burnout. Do not allow a short-circuit or do not use the parts not recommended
by Toshiba TEC Corporation.
Caution: Before using the wristband, unplug the power cable of the equipment and
make sure that there are no charged objects which are not insulated in the
vicinity.

4. Cautionary Labels
- During servicing, be sure to check the rating plate and cautionary labels such as “Unplug the
power cable during service”, “CAUTION. HOT”, “CAUTION. HIGH VOLTAGE”, “CAUTION.
LASER BEAM”, etc. to see if there is any dirt on their surface and if they are properly stuck to the
equipment.
5. Disposal of the Equipment, Supplies, Packing Materials, Used Batteries and IC-RAMs
- Regarding the recovery and disposal of the equipment, supplies, packing materials, used
batteries and IC-RAMs including lithium batteries, follow the relevant local regulations or rules.
6. When the option has been installed:
When the EFI printer board has been installed, be sure to unplug the power cable before performing
maintenance and inspection, otherwise troubles such as a communication error may occur.
Caution:
Dispose of used batteries and IC-RAMs including lithium batteries according to this manual.
Attention:
Se débarrasser de batteries et IC-RAMs usés y compris les batteries en lithium selon ce manuel.
Vorsicht:
Entsorgung der gebrauchten Batterien und IC-RAMs (inclusive der Lithium-Batterie) nach diesem Handbuch.
Explanatory label
Warning for grounding wire
Warning for
high temperature area
(fuser unit)
Warning for
high temperature area
(fuser unit)
Warning for
high temperature area
(ventilation holes)
Identification label
Certification label
Warning for high temperature area
Warning for handling transfer belt

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved CONTENTS
1
CONTENTS
1. FEATURE......................................................................................................................1-1
1.1 Main Feature of e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C...........................1-1
2. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES .........................................2-1
2.1 Specifications....................................................................................................................2-1
2.1.1 General..............................................................................................................2-1
2.1.2 Copy ..................................................................................................................2-3
2.1.3 Print ...................................................................................................................2-8
2.1.4 Scan...................................................................................................................2-8
2.1.5 e-Filing...............................................................................................................2-8
2.1.6 Internet Fax........................................................................................................2-9
2.1.7 Network Fax.......................................................................................................2-9
2.2 Accessories.....................................................................................................................2-10
2.3 Options............................................................................................................................2-12
2.4 Supplies ..........................................................................................................................2-13
2.5 System List......................................................................................................................2-14
3. OUTLINE OF THE MACHINE.......................................................................................3-1
3.1 Sectional View...................................................................................................................3-1
3.1.1 Front side-1........................................................................................................3-1
3.1.2 Front side-2........................................................................................................3-3
3.1.3 Rear side ...........................................................................................................3-5
3.2 Electric Parts Layout.........................................................................................................3-7
3.3 Symbols and Functions of Various Components............................................................3-18
3.4 System Block Diagram....................................................................................................3-26
3.5 Disassembly and Replacement of Covers......................................................................3-27
3.5.1 Front cover.......................................................................................................3-27
3.5.2 Inner tray..........................................................................................................3-27
3.5.3 Tray back cover ...............................................................................................3-27
3.5.4 Front upper cover ............................................................................................3-28
3.5.5 Front right cover...............................................................................................3-28
3.5.6 Left upper cover...............................................................................................3-29
3.5.7 Left cover.........................................................................................................3-29
3.5.8 Left lower cover ...............................................................................................3-29
3.5.9 Left rear cover..................................................................................................3-30
3.5.10 Right upper cover ............................................................................................3-30
3.5.11 Right rear cover ...............................................................................................3-30
3.5.12 Right rear hinge cover .....................................................................................3-31
3.5.13 Right lower cover.............................................................................................3-31
3.5.14 Right front hinge cover.....................................................................................3-31
3.5.15 Bypass rear cover............................................................................................3-32
3.5.16 Right inner cover..............................................................................................3-32
3.5.17 Upper rear cover..............................................................................................3-32
3.5.18 Rear cover-1....................................................................................................3-33
3.5.19 Rear cover-2....................................................................................................3-33
3.5.20 Rear cover-3....................................................................................................3-33
3.5.21 Waste toner cover............................................................................................3-34
4. COPY PROCESS..........................................................................................................4-1
4.1 General Description ..........................................................................................................4-1
4.1.1 Expression of Colors..........................................................................................4-1
4.1.2 4-Step Copy Process.........................................................................................4-2
4.2 Description of Operation ...................................................................................................4-3
4.3 Functions...........................................................................................................................4-4
4.4 Comparison with e-STUDIO2500C/3500C/3510C..........................................................4-13

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
CONTENTS 2
5. GENERAL OPERATION...............................................................................................5-1
5.1 Overview of Operation ......................................................................................................5-1
5.2 Description of Operation ...................................................................................................5-2
5.2.1 Warming-up .......................................................................................................5-2
5.2.2 Ready (ready for copying) .................................................................................5-2
5.2.3 Drawer feed copying (1st drawer paper feeding)...............................................5-3
5.2.4 Bypass feed copying..........................................................................................5-9
5.2.5 Interruption copying ...........................................................................................5-9
5.3 Detection of Abnormality.................................................................................................5-10
5.3.1 Types of abnormality .......................................................................................5-10
5.3.2 Description of abnormality ...............................................................................5-11
5.4 Flow Chart.......................................................................................................................5-16
5.4.1 Power ON to ready ..........................................................................................5-16
5.4.2 Automatic feed copying ...................................................................................5-18
6. CONTROL PANEL........................................................................................................6-1
6.1 General Description ..........................................................................................................6-1
6.2 Items Shown on the Display Panel ...................................................................................6-2
6.2.1 Display...............................................................................................................6-2
6.2.2 Message ............................................................................................................6-3
6.3 Relation between the Equipment State and Operator’s Operation ...................................6-8
6.4 Description of Operation .................................................................................................6-10
6.4.1 Dot matrix LCD circuit......................................................................................6-10
6.4.2 LED display circuit ...........................................................................................6-13
6.5 Disassembly and Replacement.......................................................................................6-14
6.5.1 Stopper ............................................................................................................6-14
6.5.2 Control panel unit.............................................................................................6-14
6.5.3 Panel inverter board (P-INV) ...........................................................................6-16
6.5.4 DSP board.......................................................................................................6-16
6.5.5 KEY board .......................................................................................................6-18
6.5.6 LCD..................................................................................................................6-19
6.5.7 Control panel cover..........................................................................................6-19
7. SCANNER.....................................................................................................................7-1
7.1 General Description ..........................................................................................................7-1
7.2 Construction......................................................................................................................7-2
7.3 Functions...........................................................................................................................7-3
7.4 Description of Operation ...................................................................................................7-5
7.4.1 Scanning operation............................................................................................7-5
7.4.2 Initialization at power-ON...................................................................................7-6
7.5 Electric Circuit Description................................................................................................7-7
7.5.1 Scan motor control circuit ..................................................................................7-7
7.5.2 Exposure Lamp Control Circuit..........................................................................7-8
7.5.3 General Description of CCD Control................................................................7-11
7.5.4 Automatic Original Size Detection Circuit........................................................7-11
7.6 Disassembly and Replacement.......................................................................................7-16
7.6.1 Original glass...................................................................................................7-16
7.6.2 Lens cover.......................................................................................................7-16
7.6.3 Automatic original detection sensor (APS sensor) ..........................................7-17
7.6.4 Exposure lamp (EXP)......................................................................................7-17
7.6.5 Lens unit..........................................................................................................7-19
7.6.6 Scan motor (M1)..............................................................................................7-21
7.6.7 Carriage-1........................................................................................................7-22
7.6.8 Inverter board (INV).........................................................................................7-24
7.6.9 Carriage wire / carriage-2 ................................................................................7-25
7.6.10 Carriage home position sensor (S6)................................................................7-28
7.6.11 Platen sensor (S7)...........................................................................................7-28
7.6.12 SLG board (SLG).............................................................................................7-28
7.6.13 Scanner unit cooling fan (M30)........................................................................7-29

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved CONTENTS
3
7.6.14 Exposure lamp cooling fan (M32)....................................................................7-29
7.7 Adjustment of the Scanner Section.................................................................................7-30
7.7.1 Adjustment carriages-1 and -2 positions .........................................................7-30
7.7.2 Belt tension adjustment of the Scan motor......................................................7-31
8. IMAGE PROCESSING..................................................................................................8-1
8.1 General Description ..........................................................................................................8-1
8.2 Configuration.....................................................................................................................8-2
8.3 Image Processing PC Board (IMG)...................................................................................8-3
8.3.1 Features.............................................................................................................8-3
8.3.2 Functions of image processing circuit................................................................8-3
8.4 System Control PC Board (SYS) ......................................................................................8-7
8.4.1 Features.............................................................................................................8-7
8.4.2 Functions of image processing circuit................................................................8-7
8.5 Image Related Adjustment................................................................................................8-8
8.5.1 Adjustment Order...............................................................................................8-8
8.5.2 Adjustment of the Auto-Toner Sensor .............................................................8-10
8.5.3 Performing Image Quality Control ...................................................................8-12
8.5.4 Adjustment of Color Registration Control ........................................................8-14
8.5.5 Adjustment of the transfer belt due to environmental factors ..........................8-15
8.5.6 Image Dimensional Adjustment.......................................................................8-16
8.5.7 Paper alignment at the registration roller.........................................................8-18
8.5.8 Image dimensional adjustment at the printing section.....................................8-23
8.5.9 Image dimensional adjustment at the scanning section ..................................8-28
8.6 Image Quality Adjustment (Copying Function)................................................................8-37
8.6.1 Automatic gamma adjustment .........................................................................8-37
8.6.2 Density adjustment ..........................................................................................8-39
8.6.3 Color balance adjustment................................................................................8-40
8.6.4 Gamma balance adjustment............................................................................8-42
8.6.5 Background adjustment...................................................................................8-43
8.6.6 Judgment threshold for ACS (common for copy and scan).............................8-44
8.6.7 Sharpness adjustment.....................................................................................8-44
8.6.8 Setting range correction...................................................................................8-45
8.6.9 Adjustment of smudged/faint text ....................................................................8-45
8.6.10 Color Adjustment of Marker.............................................................................8-46
8.6.11 Beam level conversion setting.........................................................................8-47
8.6.12 Maximum toner density adjustment to paper type...........................................8-48
8.6.13 Maximum text density adjustment ...................................................................8-48
8.6.14 Text/Photo reproduction level adjustment .......................................................8-49
8.6.15 Black reproduction switching at the Twin color copy mode .............................8-49
8.6.16 Black header density level adjustment ............................................................8-50
8.6.17 Black area adjustment in twin color copy mode...............................................8-50
8.6.18 Judgment threshold adjustment for blank originals .........................................8-50
8.6.19 Background offsetting adjustment for ADF......................................................8-51
8.7 Image Quality Adjustment (Printing Function).................................................................8-52
8.7.1 Automatic gamma adjustment .........................................................................8-52
8.7.2 Gamma balance adjustment (Black Mode)......................................................8-54
8.7.3 Color balance adjustment................................................................................8-56
8.7.4 Adjustment of faint text ....................................................................................8-57
8.7.5 Upper limit value at Toner Saving Mode..........................................................8-57
8.7.6 Maximum toner density adjustment.................................................................8-58
8.7.7 Fine line enhancement switchover ..................................................................8-58
8.7.8 “PureBlack/PureGray” threshold adjustment (PCL).........................................8-58
8.7.9 “PureBlack/PureGray” threshold adjustment (Twin color mode) .....................8-59
8.7.10 “PureBlack/PureGray” threshold adjustment (PS)...........................................8-59
8.7.11 “PureBlack/PureGray” threshold adjustment (XPS).........................................8-59
8.7.12 Toner limit threshold adjustment......................................................................8-60
8.7.13 Screen switchover ...........................................................................................8-60
8.7.14 Sharpness adjustment.....................................................................................8-61

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
CONTENTS 4
8.7.15 Thin line width lower limit adjustment ..............................................................8-61
8.7.16 Offsetting adjustment for background processing ...........................................8-61
8.8 Image Quality Adjustment (Scanning Function)..............................................................8-62
8.8.1 Gamma balance adjustment............................................................................8-62
8.8.2 Density adjustment ..........................................................................................8-63
8.8.3 Background adjustment (Color Mode).............................................................8-64
8.8.4 Judgment threshold for ACS (common for copy and network scan) ...............8-64
8.8.5 Sharpness adjustment.....................................................................................8-65
8.8.6 Setting range correction...................................................................................8-66
8.8.7 Fine adjustment of black density .....................................................................8-67
8.8.8 RGB conversion method selection ..................................................................8-67
8.8.9 Adjustment of saturation..................................................................................8-68
8.8.10 Background processing offset adjustment.......................................................8-69
8.9 Image Quality Adjustment (FAX Function)......................................................................8-70
8.9.1 Density adjustment ..........................................................................................8-70
8.9.2 Beam level conversion setting.........................................................................8-71
9. LASER OPTICAL UNIT ................................................................................................9-1
9.1 General Description ..........................................................................................................9-1
9.2 Structure............................................................................................................................9-3
9.3 Electric Circuit Description................................................................................................9-7
9.3.1 Laser diode control circuit..................................................................................9-7
9.3.2 Polygonal motor control circuit...........................................................................9-8
9.3.3 Mirror motor control circuit.................................................................................9-9
9.4 Disassembly and Replacement.......................................................................................9-11
9.4.1 Laser optical unit..............................................................................................9-11
9.4.2 Shutter unit ......................................................................................................9-14
9.4.3 Shutter motor (M12).........................................................................................9-15
9.4.4 Shutter status detection sensor (S20) .............................................................9-16
9.4.5 Slit glass cleaning pad.....................................................................................9-17
9.4.6 Polygonal motor...............................................................................................9-17
9.5 Image Adjustment in Laser Optical Unit..........................................................................9-19
10. DRIVE SYSTEM..........................................................................................................10-1
10.1 General Description ........................................................................................................10-1
11. PAPER FEEDING SYSTEM........................................................................................11-1
11.1 General Descriptions.......................................................................................................11-1
11.2 Composition....................................................................................................................11-2
11.3 Functions.........................................................................................................................11-3
11.4 Description of Operation .................................................................................................11-5
11.4.1 Drive of rollers..................................................................................................11-5
11.4.2 Operation of bypass pickup roller....................................................................11-6
11.4.3 Operation of drawer pickup roller.....................................................................11-7
11.4.4 Separation of paper.........................................................................................11-8
11.4.5 General operation............................................................................................11-8
11.5 Electric Circuit Description ............................................................................................11-11
11.5.1 Tray-up motor control circuit..........................................................................11-11
11.5.2 Registration motor control circuit ...................................................................11-12
11.5.3 Feed/Transport motor control circuit..............................................................11-13
11.6 Disassembly and Replacement.....................................................................................11-14
11.6.1 Bypass unit....................................................................................................11-14
11.6.2 Hinge assembly .............................................................................................11-15
11.6.3 SFB board (SFB) ...........................................................................................11-16
11.6.4 Bypass feed upper cover...............................................................................11-17
11.6.5 Bypass upper guide.......................................................................................11-18
11.6.6 Bypass pickup solenoid (SOL1).....................................................................11-18
11.6.7 Bypass paper sensor (S40)...........................................................................11-19
11.6.8 Bypass pickup roller.......................................................................................11-20
11.6.9 Bypass feed roller..........................................................................................11-20

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved CONTENTS
5
11.6.10 Bypass transport roller...................................................................................11-21
11.6.11 Bypass feed clutch (CLT8) ............................................................................11-21
11.6.12 Bypass separation roller ................................................................................11-22
11.6.13 Bypass feed sensor (S41) .............................................................................11-23
11.6.14 Drawer feeding unit........................................................................................11-24
11.6.15 Tray-up sensor (S31/S35) / Empty sensor (S32/S36) ...................................11-24
11.6.16 Paper stock sensor (S33/S37).......................................................................11-24
11.6.17 Separation roller ............................................................................................11-25
11.6.18 Feed roller......................................................................................................11-26
11.6.19 Pickup roller...................................................................................................11-26
11.6.20 Drawer feed clutch (CLT3/CLT6)...................................................................11-27
11.6.21 Tray-up motor (M21)......................................................................................11-27
11.6.22 Tray drive unit................................................................................................11-29
11.6.23 2nd drawer transport clutch (Low speed) (CLT4)..........................................11-29
11.6.24 2nd drawer transport clutch (High speed) (CLT5) .........................................11-29
11.6.25 1st drawer detection switch (SW5) / 2nd drawer detection switch (SW6) .....11-30
11.6.26 Paper feed guide assembly ...........................................................................11-30
11.6.27 2nd drawer feed sensor (S34) .......................................................................11-31
11.6.28 Side cover switch (SW4)................................................................................11-31
11.6.29 Registration guide..........................................................................................11-32
11.6.30 Registration sensor (S28)..............................................................................11-34
11.6.31 1st drawer feed sensor (S30) ........................................................................11-34
11.6.32 Registration roller (Rubber) ...........................................................................11-35
11.6.33 Registration motor unit...................................................................................11-36
11.6.34 Registration motor (M19)...............................................................................11-36
11.6.35 Registration roller (Metal) ..............................................................................11-37
11.6.36 Paper dust holder ..........................................................................................11-39
11.6.37 1st drawer transport clutch (Low speed) (CLT2) ...........................................11-39
11.6.38 Feed/transport motor (M20)...........................................................................11-40
11.6.39 Feed/transport gear unit ................................................................................11-40
11.6.40 1st drawer transport clutch (High speed) (CLT1)...........................................11-40
11.6.41 1st drawer transport roller..............................................................................11-41
11.6.42 2nd drawer transport roller.............................................................................11-41
11.7 Adjustment of the Paper Feeding System.....................................................................11-42
11.7.1 Sheet sideways deviation caused by paper feeding......................................11-42
12. PROCESS UNIT RELATED SECTION.......................................................................12-1
12.1 General description.........................................................................................................12-1
12.2 Composition....................................................................................................................12-2
12.3 Functions.........................................................................................................................12-3
12.4 Description of Operation .................................................................................................12-5
12.4.1 Drum phase registration mechanism...............................................................12-5
12.5 Electric Circuit Description ..............................................................................................12-7
12.5.1 High-voltage transformer control circuit...........................................................12-7
12.5.2 Drum Temperature Detection Circuit...............................................................12-9
12.5.3 Drum motor control circuit..............................................................................12-10
12.5.4 Drum switching motor control circuit..............................................................12-11
12.6 Disassembly and Replacement.....................................................................................12-12
12.6.1 Process unit (EPU)........................................................................................12-12
12.6.2 Process cover................................................................................................12-13
12.6.3 Cleaning unit/ Developer unit.........................................................................12-15
12.6.4 Main charger assembly..................................................................................12-15
12.6.5 Main charger cleaner ....................................................................................12-16
12.6.6 Main charger grid ..........................................................................................12-17
12.6.7 Needle electrode ...........................................................................................12-17
12.6.8 Drum .............................................................................................................12-18
12.6.9 Drum cleaning blade .....................................................................................12-20
12.6.10 Drum thermistor (THM1, THM2)....................................................................12-21
12.6.11 Discharge LED (ERS-Y, ERS-M, ERS-C, ERS-K) ........................................12-22

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
CONTENTS 6
12.6.12 Needle electrode cleaner detection sensor (S21)..........................................12-22
12.6.13 Drum drive unit ..............................................................................................12-23
12.6.14 Drum motor (M10) .........................................................................................12-24
12.6.15 Drum switching motor (M11)..........................................................................12-25
12.6.16 Drum switching detection sensor (S19).........................................................12-26
12.6.17 K drum phase sensor (S44)...........................................................................12-28
12.6.18 Color drum phase sensor (S43).....................................................................12-28
12.7 Adjustment of the Process unit Related Section...........................................................12-29
12.7.1 High-Voltage Transformer Setting .................................................................12-29
13. DEVELOPER UNIT .....................................................................................................13-1
13.1 General Description ........................................................................................................13-1
13.2 Composition....................................................................................................................13-2
13.3 Functions.........................................................................................................................13-3
13.4 Electrical Circuit Description ...........................................................................................13-5
13.4.1 Temperature/humidity detection circuit............................................................13-5
13.4.2 Toner motor control circuit...............................................................................13-6
13.4.3 Waste toner transport motor control circuit......................................................13-7
13.4.4 Waste toner paddle motor control circuit .........................................................13-8
13.4.5 Auto-toner Circuit.............................................................................................13-9
13.5 Disassembly and Replacement.....................................................................................13-12
13.5.1 Waste toner box.............................................................................................13-12
13.5.2 Developer filter ..............................................................................................13-12
13.5.3 Developer material ........................................................................................13-13
13.5.4 Doctor blade ..................................................................................................13-17
13.5.5 Auto-toner sensor (S22, S23, S24, S25) .......................................................13-19
13.5.6 Developer sleeve...........................................................................................13-20
13.5.7 Mixer..............................................................................................................13-22
13.5.8 Waste toner transport motor (M31)................................................................13-24
13.5.9 Temperature / humidity sensor (S12) ............................................................13-25
13.5.10 Waste toner box full detection sensor (S13)..................................................13-25
13.5.11 Waste toner paddle motor lock detection sensor (S14).................................13-25
13.5.12 Waste toner paddle motor (M6).....................................................................13-27
13.5.13 Waste toner transport unit .............................................................................13-28
13.5.14 Waste toner cover open/close detection switch (SW8) .................................13-28
13.5.15 Auger lock detection sensor (S42).................................................................13-28
13.5.16 Developer unit motor (M9).............................................................................13-29
13.5.17 Developer drive unit.......................................................................................13-29
13.5.18 Toner motor assembly...................................................................................13-31
13.5.19 Toner motor (M2, M3, M4, M5)......................................................................13-32
13.5.20 Toner cartridge detection sensor (S8, S9, S10, S11)....................................13-33
13.5.21 Ozone filter-1 ................................................................................................13-33
13.5.22 EPU cooling fan (M33)...................................................................................13-34
13.5.23 Ozone exhaust duct.......................................................................................13-34
13.5.24 Ozone exhaust fan (M24) ..............................................................................13-35
13.5.25 Internal cooling fan (M23)..............................................................................13-35
13.5.26 Ozone filter-2 ................................................................................................13-36
13.6 Adjustment of the developer unit...................................................................................13-37
13.6.1 Adjustment of the Auto-Toner Sensor ...........................................................13-37
13.6.2 Adjustment of the doctor-to-sleeve gap.........................................................13-38
14. TRANSFER UNIT........................................................................................................14-1
14.1 General Descriptions.......................................................................................................14-1
14.2 Composition....................................................................................................................14-2
14.3 Functions.........................................................................................................................14-3
14.4 General description of operation.....................................................................................14-5
14.4.1 Printing in the color modes..............................................................................14-5
14.4.2 Printing in the black mode ...............................................................................14-6
14.4.3 Color registration control..................................................................................14-7

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14.5 Electric Circuit Description ..............................................................................................14-9
14.5.1 Transfer belt motor control circuit ....................................................................14-9
14.5.2 1st transfer roller cam motor control circuit....................................................14-10
14.6 Disassembly and Replacement.....................................................................................14-11
14.6.1 Transfer belt cleaning unit .............................................................................14-11
14.6.2 Transfer belt cleaning blade / Blade seal .....................................................14-13
14.6.3 Transfer belt unit (TBU).................................................................................14-14
14.6.4 Transfer belt...................................................................................................14-16
14.6.5 Drive roller .....................................................................................................14-18
14.6.6 1st transfer roller............................................................................................14-19
14.6.7 2nd transfer facing roller / 2nd transfer facing roller cleaning mylar .............14-20
14.6.8 Tension roller.................................................................................................14-21
14.6.9 1st transfer roller cam motor (M8) .................................................................14-22
14.6.10 1st transfer roller status detection sensor (S15)............................................14-24
14.6.11 2nd transfer unit (TRU)..................................................................................14-25
14.6.12 2nd transfer roller ..........................................................................................14-26
14.6.13 TRU cover......................................................................................................14-26
14.6.14 Paper clinging detection sensor (S27)...........................................................14-27
14.6.15 2nd transfer roller position detection sensor (S29)........................................14-27
14.6.16 Transfer belt motor (M7)................................................................................14-28
14.6.17 Transfer cover switch (SW3) .........................................................................14-29
14.7 Adjustment of the Transfer Unit ....................................................................................14-30
14.7.1 Adjustment of the transfer belt due to environmental factors ........................14-30
14.7.2 Adjustment of Gap between Transfer Belt Unit (TBU) Drive Gears ..............14-33
15. IMAGE QUALITY CONTROL .....................................................................................15-1
15.1 General Description ........................................................................................................15-1
15.2 Composition....................................................................................................................15-2
15.3 Principle of the Sensor....................................................................................................15-3
15.4 Flow Chart of Control Procedure.....................................................................................15-4
15.5 Disassembly and Replacement.......................................................................................15-5
15.5.1 Image quality control unit.................................................................................15-5
15.5.2 Image position aligning sensor (front) (S16)....................................................15-5
15.5.3 Image position aligning sensor (rear) (S17).....................................................15-5
15.5.4 Image quality sensor (S18)..............................................................................15-6
15.5.5 Sensor shutter solenoid (SOL2) ......................................................................15-6
15.6 Adjustment of the Image Quality Control ........................................................................15-7
15.6.1 Performing Image Quality Control ...................................................................15-7
16. FUSER UNIT / PAPER EXIT SECTION......................................................................16-1
16.1 General Description ........................................................................................................16-1
16.2 Composition....................................................................................................................16-2
16.3 Functions.........................................................................................................................16-3
16.4 Description of Operation .................................................................................................16-5
16.5 Electric Circuit Description ..............................................................................................16-6
16.5.1 Fuser unit control circuit...................................................................................16-6
16.5.2 Fuser motor control circuit.............................................................................16-15
16.5.3 Exit motor control circuit ................................................................................16-16
16.6 Disassembly and Replacement.....................................................................................16-17
16.6.1 Fuser unit.......................................................................................................16-17
16.6.2 Front side cover.............................................................................................16-18
16.6.3 Rear side cover .............................................................................................16-18
16.6.4 Heat roller cover ...........................................................................................16-18
16.6.5 Pressure roller cover .....................................................................................16-19
16.6.6 Transport guide .............................................................................................16-19
16.6.7 Separation finger unit / Separation finger .....................................................16-20
16.6.8 Pressure roller / Pressure roller lamp (LAMP3)............................................16-21
16.6.9 Separation plate / Fuser belt unit / Heater lamp (center / side / sub) ............16-23
16.6.10 Fuser belt / Heat roller / Fuser belt guide / Fuser roller ...............................16-30

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CONTENTS 8
16.6.11 Pressure roller thermostat (THMO3) ............................................................16-31
16.6.12 Pressure roller center thermistor (THM4) /
Pressure roller rear thermistor (THM5) .........................................................16-33
16.6.13 Fuser belt center thermostat (THMO1) .........................................................16-34
16.6.14 Fuser belt rear thermostat (THMO2) ............................................................16-36
16.6.15 Fuser belt front thermistor (THM3) ...............................................................16-37
16.6.16 Exit sensor (S26) ..........................................................................................16-38
16.6.17 Exit unit..........................................................................................................16-39
16.6.18 Upper exit roller / Lower exit roller.................................................................16-40
16.6.19 Fuser belt center thermopile(THMP1) / Fuser belt rear thermopile(THMP2).16-41
16.6.20 Fuser motor (M17).........................................................................................16-42
16.6.21 Exit section drive unit ....................................................................................16-43
16.6.22 Fuser drive unit..............................................................................................16-43
16.6.23 Fuser/exit section cooling fan (M25) / Exit motor (M18) ................................16-43
16.7 Adjustment of the Separation Plate Gap.......................................................................16-45
17. AUTOMATIC DUPLEXING UNIT (ADU).....................................................................17-1
17.1 General Description ........................................................................................................17-1
17.2 Composition....................................................................................................................17-2
17.3 Functions.........................................................................................................................17-3
17.4 Drive of ADU...................................................................................................................17-4
17.5 Description of Operations................................................................................................17-5
17.6 Flow Chart.....................................................................................................................17-11
17.7 Disassembly and Replacement.....................................................................................17-13
17.7.1 ADU maintenance position............................................................................17-13
17.7.2 Automatic Duplexing Unit (ADU) ...................................................................17-13
17.7.3 ADU inside rear cover....................................................................................17-14
17.7.4 ADU opening/closing switch (SW7)...............................................................17-15
17.7.5 ADU board (ADU)..........................................................................................17-15
17.7.6 ADU cover .....................................................................................................17-15
17.7.7 Paper guide ...................................................................................................17-16
17.7.8 ADU clutch (CLT7).........................................................................................17-16
17.7.9 ADU drive unit / ADU motor (M22) ................................................................17-16
17.7.10 Upper transport roller.....................................................................................17-18
17.7.11 Middle transport roller....................................................................................17-19
17.7.12 Lower transport roller.....................................................................................17-20
17.7.13 ADU entrance sensor (S38)...........................................................................17-20
17.7.14 ADU exit sensor (S39)...................................................................................17-21
17.7.15 ADU lower cover............................................................................................17-21
17.7.16 ADU upper cover assembly...........................................................................17-21
17.7.17 Cover interlock switch (SW2).........................................................................17-22
18. POWER SUPPLY UNIT ..............................................................................................18-1
18.1 General description.........................................................................................................18-1
18.2 Construction....................................................................................................................18-1
18.3 Operation of DC Output Circuits .....................................................................................18-2
18.4 Output Channel...............................................................................................................18-3
18.5 Fuse................................................................................................................................18-5
18.6 Configuration of Power Supply Unit................................................................................18-6
18.7 Sequence of Power Supply.............................................................................................18-7
18.8 AC Wire Harness ............................................................................................................18-9
19. PREVENTIVE MAINTENANCE (PM)..........................................................................19-1
19.1 General Description ........................................................................................................19-1
19.2 PM Display......................................................................................................................19-1
19.2.1 General Description.........................................................................................19-1
19.2.2 PM Display Conditions.....................................................................................19-1
19.2.3 PM Display Contents .......................................................................................19-2
19.2.4 Counter Clearing..............................................................................................19-2
19.3 General Descriptions for PM Procedure .........................................................................19-4

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19.4 PM Support Mode...........................................................................................................19-5
19.4.1 General Description.........................................................................................19-5
19.4.2 Operational flow...............................................................................................19-5
19.4.3 Operational screen ..........................................................................................19-6
19.4.4 Access tree......................................................................................................19-9
19.5 Work flow of parts replacement.....................................................................................19-11
19.6 Preventive Maintenance Checklist................................................................................19-12
19.6.1 Scanner .........................................................................................................19-13
19.6.2 Laser unit.......................................................................................................19-14
19.6.3 Feed unit........................................................................................................19-14
19.6.4 Automatic duplexing unit................................................................................19-16
19.6.5 Bypass feed unit............................................................................................19-17
19.6.6 Main charger..................................................................................................19-18
19.6.7 Drum/Cleaner unit, Cleaner related section...................................................19-19
19.6.8 Developer unit (K, Y, M, and C).....................................................................19-22
19.6.9 Waste Toner Box...........................................................................................19-24
19.6.10 Transfer belt unit / Transfer belt cleaning unit ...............................................19-25
19.6.11 Image quality control unit...............................................................................19-27
19.6.12 2nd transfer roller unit....................................................................................19-28
19.6.13 Fuser unit.......................................................................................................19-29
19.6.14 Exit unit..........................................................................................................19-32
19.6.15 RADF (MR-3018)...........................................................................................19-33
19.6.16 PFP (KD-1023) ..............................................................................................19-34
19.6.17 LCF (KD-1024) ..............................................................................................19-35
19.7 Storage of Supplies and Replacement Parts................................................................19-36
19.8 PM KIT..........................................................................................................................19-37
19.9 Maintenance Part List ..................................................................................................19-38
19.10 Grease List....................................................................................................................19-40
19.11 Operational Items in Overhauling..................................................................................19-40
20. FIRMWARE UPDATING .............................................................................................20-1
20.1 Firmware Updating with USB Media...............................................................................20-5
20.1.1 Master data/System ROM/Engine ROM/Scanner ROM..................................20-7
20.1.2 Imaging Acceleration Board ROM (GE-1170) ...............................................20-17
20.2 Firmware Updating with PWA-DWNLD-350-JIG2.........................................................20-22
20.2.1 Writing the data to the download jig (PWA-DWNLD-350-JIG2).....................20-23
20.2.2 System ROM .................................................................................................20-26
20.2.3 Engine ROM ..................................................................................................20-28
20.3 Firmware Updating with K-PWA-DLM-320....................................................................20-31
20.3.1 Scanner ROM................................................................................................20-32
20.3.2 RADF firmware (MR-3018)............................................................................20-34
20.3.3 Finisher firmware (MJ-1101)..........................................................................20-36
20.3.4 Converter Firmware (MJ-1101)......................................................................20-38
20.3.5 Hole punch unit firmware (MJ-6101)..............................................................20-42
20.3.6 Finisher firmware/Saddle stitcher firmware (MJ-1030) ..................................20-46
20.3.7 Finisher firmware (MJ-1031)..........................................................................20-50
20.3.8 Fax unit firmware (GD-1250) .........................................................................20-53
20.4 Confirmation of the updated data..................................................................................20-55
20.5 When Firmware Updating Fails.....................................................................................20-56
20.5.1 Procedure ......................................................................................................20-56
20.5.2 Flow chart for correcting USB update failure.................................................20-57
21. REPLACEMENT OF PC BOARDS/HDD....................................................................21-1
21.1 Removal and Installation of PC Boards/HDD..................................................................21-1
21.1.1 Hard disk (HDD) ..............................................................................................21-1
21.1.2 Board cover .....................................................................................................21-2
21.1.3 FAX cover........................................................................................................21-3
21.1.4 SYS/HDD cooling fan ......................................................................................21-3
21.1.5 SYS board .......................................................................................................21-3

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CONTENTS 10
21.1.6 IMG board........................................................................................................21-4
21.1.7 LGC board.......................................................................................................21-5
21.1.8 Switching regulator..........................................................................................21-5
21.1.9 High-voltage transformer (HVT).......................................................................21-7
21.1.10 FIL board .........................................................................................................21-8
21.1.11 Board case.....................................................................................................21-10
21.1.12 SRAM board <for LGC board> ......................................................................21-12
21.1.13 SRAM board <for SYS board> ......................................................................21-13
21.2 Precautions, Procedures and Settings for Replacing PC Boards and HDD .................21-15
21.2.1 Precautions when replacing PC boards.........................................................21-15
21.2.2 HDD fault diagnosis.......................................................................................21-16
21.2.3 Precautions and procedures when replacing the HDD..................................21-18
21.2.4 Precautions and Procedures when replacing the SYS board........................21-22
21.2.5 Procedures and settings when replacing the SLG board .............................21-23
21.2.6 Precautions and procedure when replacing the SRAM board
(for the SYS board)........................................................................................21-24
21.2.7 Procedures and settings when replacing SRAM board (for LGC board).......21-28
21.2.8 Firmware confirmation after the PC board/HDD replacement .......................21-30
21.3 Precautions for Installation of GP-1070 and Disposal of HDD/Board...........................21-31
21.3.1 Precautions for Installation of GP-1070 and Disposal of HDD/Board............21-31
21.3.2 Precautions when disposing of the SYS board..............................................21-31
21.3.3 Precautions when disposing of the SRAM board ..........................................21-31
22. BACKUP FUNCTION..................................................................................................22-1
22.1 Data Cloning ...................................................................................................................22-1
22.1.1 General description..........................................................................................22-1
22.1.2 Precautions......................................................................................................22-1
22.1.3 Backup files .....................................................................................................22-1
22.1.4 Cloning procedure ...........................................................................................22-3
22.2 AES Data Encryption Function Setting .........................................................................22-10
22.2.1 General description........................................................................................22-10
22.2.2 Precautions....................................................................................................22-10
22.2.3 Setting procedure ..........................................................................................22-11
22.2.4 Procedure for disabling data encryption function...........................................22-16
22.2.5 Procedure for discarding HDD when data encryption function is enabled ....22-16
22.3 Assist Mode...................................................................................................................22-17
22.3.1 Assist Mode...................................................................................................22-17
22.3.2 Operating Procedure of Assist Mode.............................................................22-18
23. SELF-DIAGNOSTIC MODE........................................................................................23-1
23.1 Input check (Test mode 03) ............................................................................................23-4
23.2 Output check (test mode 03).........................................................................................23-12
23.3 Test print mode (test mode 04).....................................................................................23-15
23.4 List Printing ...................................................................................................................23-16
24. ADJUSTMENT MODE (05).........................................................................................24-1
24.1 Classification List of Adjustment Mode (05) ...................................................................24-1
24.2 Operating Procedure.......................................................................................................24-6
24.3 Test print pattern in Adjustment Mode (05).....................................................................24-8
24.4 Process ........................................................................................................................24-11
24.5 Image Processing .........................................................................................................24-26
24.6 System..........................................................................................................................24-56
24.7 Scanner.........................................................................................................................24-57
24.8 Printer............................................................................................................................24-60
25. SETTING MODE (08)..................................................................................................25-1
25.1 Classification List of Setting Mode (08)...........................................................................25-1
25.2 Operating Procedure.....................................................................................................25-12
25.3 Process.........................................................................................................................25-14
25.4 Scanner.........................................................................................................................25-34

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25.5 Printer............................................................................................................................25-35
25.6 Counter .........................................................................................................................25-47
25.7 Image Processing .........................................................................................................25-96
25.8 System..........................................................................................................................25-99
25.9 Pixel counter ...............................................................................................................25-193
25.9.1 Outline .........................................................................................................25-193
25.9.2 Pixel counter related code...........................................................................25-205
25.10 PM support mode related code...................................................................................25-221
25.11 Default setting / restore setting of the EFI Printer Board.............................................25-230
25.12 S-ACS setting (08-9934).............................................................................................25-231
25.12.1 Outline .........................................................................................................25-231
25.12.2 Switching operation and performance .........................................................25-231
25.12.3 Printing status..............................................................................................25-232
25.12.4 Setting..........................................................................................................25-233
25.12.5 Precautions for setting.................................................................................25-234
26. ERROR CODE AND TROUBLESHOOTING..............................................................26-1
26.1 General Descriptions.......................................................................................................26-1
26.2 Error Code List................................................................................................................26-2
26.2.1 Jam..................................................................................................................26-2
26.2.2 Service call ......................................................................................................26-8
26.2.3 Error in Internet FAX / Scanning Function.....................................................26-14
26.2.4 Printer function error......................................................................................26-22
26.3 Diagnosis and Prescription for Each Error Code ..........................................................26-24
26.3.1 Paper transport jam (paper exit section)........................................................26-24
26.3.2 Paper misfeeding...........................................................................................26-24
26.3.3 Paper transport jam.......................................................................................26-28
26.3.4 Other paper jam.............................................................................................26-32
26.3.5 Cover open jam .............................................................................................26-35
26.3.6 RADF jam......................................................................................................26-37
26.3.7 Jam in bridge unit ..........................................................................................26-40
26.3.8 Paper jam in finisher section..........................................................................26-41
26.3.9 Paper jam in saddle stitcher section..............................................................26-47
26.3.10 Paper jam in puncher unit..............................................................................26-49
26.3.11 Other paper jam.............................................................................................26-49
26.3.12 Paper feeding system related service call .....................................................26-52
26.3.13 Scanning system related service call.............................................................26-57
26.3.14 Fuser unit related service call........................................................................26-59
26.3.15 Communication related service call...............................................................26-62
26.3.16 RADF related service call ..............................................................................26-64
26.3.17 Circuit related service call..............................................................................26-64
26.3.18 Laser optical unit related service call.............................................................26-67
26.3.19 Finisher related service call ...........................................................................26-70
26.3.20 Image control related service call ..................................................................26-87
26.3.21 Copy process related service call................................................................26-100
26.3.22 Other service call.........................................................................................26-104
26.3.23 Error in Internet FAX / Scanning Function...................................................26-105
26.3.24 Printer function error....................................................................................26-119
26.4 Other errors.................................................................................................................26-121
26.4.1 Equipment operation disabled after the installation of option(s)..................26-121
26.4.2 Wireless LAN connection disabled ..............................................................26-121
26.4.3 “Start page” printing disabled after the installation of the EFI Printer Board
(GA-1211, optional) .....................................................................................26-121
26.4.4 Abnormality Related to Imaging Acceleration Board (GE-1170, optional)...26-121
26.5 Troubleshooting for the Image....................................................................................26-122
26.5.1 Color deviation.............................................................................................26-122
26.5.2 Uneven pitch and jitter image ......................................................................26-124
26.5.3 Poor image density, color reproduction and gray balance...........................26-126
26.5.4 Background fogging ....................................................................................26-127

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26.5.5 Moire /lack of sharpness..............................................................................26-129
26.5.6 Toner offset..................................................................................................26-131
26.5.7 Blurred image ..............................................................................................26-132
26.5.8 Poor fusing...................................................................................................26-133
26.5.9 Blank print....................................................................................................26-134
26.5.10 Solid print.....................................................................................................26-136
26.5.11 White banding (in feeding direction) ............................................................26-137
26.5.12 White banding (at right angles to feeding direction) ....................................26-138
26.5.13 Skew (slantwise copying) ............................................................................26-139
26.5.14 Color banding (in feeding direction).............................................................26-140
26.5.15 Color banding (at right angles to feeding direction).....................................26-141
26.5.16 White spots..................................................................................................26-142
26.5.17 Poor transfer................................................................................................26-143
26.5.18 Uneven image density (in feeding direction)................................................26-144
26.5.19 Uneven image density (at right angles to feeding direction)........................26-145
26.5.20 Faded image (low density)...........................................................................26-146
26.5.21 Image dislocation in feeding direction..........................................................26-147
26.5.22 Image jittering ..............................................................................................26-148
26.5.23 Poor cleaning...............................................................................................26-149
26.5.24 Uneven light distribution ..............................................................................26-150
26.5.25 Blotched image............................................................................................26-151
26.5.26 Stain on the paper back side .......................................................................26-152
26.5.27 White void in the halftone ............................................................................26-154
26.5.28 Paper wrinkle...............................................................................................26-155
26.5.29 White void in the halftone ............................................................................26-157
26.5.30 Faint image (immediately after equipment installation) ...............................26-158
27. REMOTE SERVICE.....................................................................................................27-1
27.1 Auto Supply Order...........................................................................................................27-1
27.1.1 Outline .............................................................................................................27-1
27.1.2 Setting Item......................................................................................................27-1
27.1.3 Setting procedure ............................................................................................27-3
27.1.4 Order Sheet Format.......................................................................................27-14
27.2 Service Notification .......................................................................................................27-16
27.2.1 Outline ...........................................................................................................27-16
27.2.2 Setting............................................................................................................27-16
27.2.3 Items to be notified ........................................................................................27-23
28. SETTING / ADJUSTMENT OF OPTION ....................................................................28-1
28.1 Removal and Installation of Options ...............................................................................28-1
28.1.1 MR-3018 (Reversing Automatic Document Feeder (RADF)) .........................28-1
28.1.2 KD-1023 (Paper Feed Pedestal (PFP))...........................................................28-4
28.1.3 KD-1024 (Large Capacity Feeder (LCF)) ........................................................28-7
28.1.4 MJ-1101 (Finisher).........................................................................................28-10
28.1.5 MJ-1030 (Saddle Stitch Finisher) ..................................................................28-12
28.1.6 MJ-1031 (Hanging Finisher) .........................................................................28-14
28.1.7 MJ-6004 (Hole punch unit) ............................................................................28-16
28.1.8 MJ-6101 (Hole punch unit) ............................................................................28-20
28.1.9 KN-4520 (Bridge unit)....................................................................................28-23
28.2 Adjustment of the Finisher (MJ-1101)...........................................................................28-25
28.2.1 Adjusting the alignment position....................................................................28-25
28.2.2 Adjusting the stapling position.......................................................................28-27
28.2.3 B4-size recycled paper mode settings...........................................................28-29
28.3 Adjustment of the Finisher (MJ-1030)...........................................................................28-31
28.3.1 Adjusting the alignment position (Finisher unit).............................................28-31
28.3.2 Adjusting the staple position (Finisher unit)...................................................28-32
28.3.3 Adjusting the folding position (Saddle stitcher unit).......................................28-34
28.3.4 Fine adjustment of binding/folding position (Saddle stitcher unit)..................28-36
28.3.5 Sensor output adjustment (Puncher unit) ......................................................28-37

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28.3.6 Registering the number of punch holes (Puncher unit) .................................28-38
28.4 Adjustment of the Hanging Finisher (MJ-1031).............................................................28-39
28.4.1 Adjustment of the offset solenoid...................................................................28-39
28.4.2 Position adjustment of the stapler unit...........................................................28-40
28.5 Adjustment of the RADF (MR-3018).............................................................................28-41
28.5.1 Adjustment of RADF position.........................................................................28-41
28.5.2 Adjustment of RADF height ...........................................................................28-46
28.5.3 Adjustment of skew........................................................................................28-48
28.5.4 Adjustment of the leading edge position........................................................28-51
28.5.5 Adjustment of horizontal position...................................................................28-53
28.5.6 Adjustment of copy ratio ................................................................................28-54
28.5.7 Adjustment of RADF opening/closing sensor ................................................28-55
29. EXTERNAL COUNTERS ............................................................................................29-1
29.1 Outline.............................................................................................................................29-1
29.2 Signal..............................................................................................................................29-1
29.3 Notices............................................................................................................................29-5
30. PC BOARDS ...............................................................................................................30-1

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