Ricoh STINGER-C1 User manual

STINGER-C1
(Machine Code: A250)
SERVICE MANUAL
Subject to change
Ricoh Technical Service
May 17th, 1999

IIMPORTANT SAFETY NOTICES
PREVENTION OF PHYSICAL INJURY
1. Before disassembling or assembling parts of the copier and peripherals,
make sure that the copier power cord is unplugged.
2. The wall outlet should be near the copier and easily accessible.
3. Note that some components of the copier and the paper tray unit are
supplied with electrical voltage even if the main power switch is turned off.
4. If any adjustment or operation check has to be made with exterior covers off
or open while the main switch is turned on, keep hands away from electrified
or mechanically driven components.
5. If the “Start” key is pressed before the copier completes the warm-up period
(the “Start” key starts blinking red and green alternatively), keep hands away
from the mechanical and the electrical components as the copier starts
making copies as soon as the warm-up period is completed.
6. The inside and the metal parts of the fusing unit become extremely hot while
the copier is operating. Be careful to avoid touching those components with
your bare hands.
HEALTH SAFETY CONDITIONS
1. Always replace the ozone filters with the specified ones at the specified
intervals.
2. Toner is non-toxic, but if you get it in your eyes by accident, it may cause
temporary eye discomfort. Try to remove with eye drops or flush with water
as first aid. If unsuccessful, get medical attention.
OBSERVANCE OF ELECTRICAL SAFETY STANDARDS
1. The copier and its peripherals must be installed and maintained by a
customer service representative who has completed the training course on
those models.
2. The danger of explosion exists if batteries on the FCU and JBIG are
incorrectly replaced. Replace only with the same or an equivalent type
recommended by the manufacturer. Discard used batteries in accordance
with the manufacturer’s instructions.

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
1. Do not incinerate AIO cartridge. Toner dust may ignite suddenly when
exposed to and open flame.
2. Dispose of used AIO cartridge in accordance with local regulations. (This is
non-toxic supplies.)
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used lithium batteries in order to dispose of them later, do not
put more than 100 batteries per sealed box. Storing larger numbers or not
sealing them apart may lead to chemical reactions and heat build-up.
LASER SAFETY
The Center for Devices and Radiological Health (CDRH) prohibits the repair of
laser-based optical units in the field. The optical housing unit can only be repaired
in a factory or at a location with the requisite equipment. The laser subsystem is
replaceable in the field by a qualified Customer Engineer. The laser chassis is not
repairable in the field. Customer engineers are therefore directed to return all
chassis and laser subsystems to the factory or service depot when replacement of
the optical subsystem is required.
IWARNING
Use of controls, or adjustment, or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
IWARNING FOR LASER UNIT
WARNING: Turn off the main switch before attempting any of the
procedures in the Laser Unit section. Laser beams can
seriously damage your eyes.
CAUTION MARKING:

i
TABLE OF CONTENTS
1. OVERALL MACHINE INFORMATION........................................1-1
1.1 SPECIFICATIONS.................................................................................... 1-1
1.2 MACHINE CONFIGURATION.................................................................. 1-5
1.3 PAPER PATH........................................................................................... 1-6
1.4 MECHANICAL COMPONENT LAYOUT................................................... 1-7
1.5 ELECTRICAL COMPONENT DESCRIPTIONS........................................ 1-8
1.5.1 COPIER ENGINE ............................................................................ 1-8
1.6 DRIVE LAYOUT ..................................................................................... 1-11
1.7 COPY PROCESS................................................................................... 1-12
1.7.1 OVERVIEW ................................................................................... 1-12
1.8 BOARD STRUCTURE............................................................................ 1-14
1.8.1 OVERVIEW ................................................................................... 1-14
1.8.2 DESCRIPTION .............................................................................. 1-15
2. DETAILED SECTION DESCRIPTIONS.......................................2-1
2.1 SCANNING............................................................................................... 2-1
2.1.1 OVERVIEW ..................................................................................... 2-1
2.1.2 SCANNER DRIVE ........................................................................... 2-2
2.1.3 ORIGINAL SIZE DETECTION IN PLATEN MODE.......................... 2-3
2.2 IMAGE PROCESSING ............................................................................. 2-5
2.2.1 OVERVIEW ..................................................................................... 2-5
2.2.2 SBU (SENSOR BOARD UNIT)........................................................ 2-7
2.2.3 AUTO IMAGE DENSITY (ADS)....................................................... 2-8
2.2.4 IMAGE PROCESSING UNIT (IPU).................................................. 2-9
2.2.5 MEMORY CONTROLLER AND EXTENDED MEMORY
BOARD (EMB)............................................................................... 2-20
2.2.6 VIDEO CONTROL UNIT (VCU)..................................................... 2-21
2.2.7 IMAGE PROCESSING SUMMARY ............................................... 2-23
2.3 LASER EXPOSURE............................................................................... 2-33
2.3.1 OVERVIEW ................................................................................... 2-33
2.3.2 OPTICAL PATH............................................................................. 2-34
2.3.3 AUTO POWER CONTROL (APC)................................................. 2-35
2.3.4 LD SAFETY SWITCH.................................................................... 2-36
2.4 ALL-IN-ONE CARTRIDGE (AIO CARTRIDGE)...................................... 2-37
2.4.1 OVERVIEW ................................................................................... 2-37
2.4.2 DRIVE............................................................................................ 2-38
2.4.3 DRUM CHARGE............................................................................ 2-39
2.4.4 DEVELOPMENT............................................................................ 2-40
2.4.5 DRUM CLEANING......................................................................... 2-43
2.5 IMAGE TRANSFER AND PAPER SEPARATION.................................. 2-44
2.5.1 OVERVIEW ................................................................................... 2-44
2.5.2 TRANSFER CURRENT SETTINGS.............................................. 2-45
2.5.3 TRANSFER ROLLER CLEANING................................................. 2-46
2.6 PAPER FEED......................................................................................... 2-47

ii
2.6.1 OVERVIEW ................................................................................... 2-47
2.6.2 BUILT-IN TRAY ............................................................................. 2-48
2.6.3 BY-PASS TRAY............................................................................. 2-51
2.6.4 PAPER REGISTRATION............................................................... 2-53
2.6.5 MISFEED DETECTION ................................................................. 2-54
2.7 IMAGE FUSING...................................................................................... 2-57
2.7.1 OVERVIEW ................................................................................... 2-57
2.7.2 FUSING UNIT DRIVE.................................................................... 2-58
2.7.3 PRESSURE ROLLER/PAPER EXIT.............................................. 2-59
2.7.4 FUSING UNIT DRIVE RELEASE................................................... 2-59
2.7.5 FUSING TEMPERATURE CONTROL........................................... 2-60
2.7.6 OVERHEAT PROTECTION........................................................... 2-63
2.7.7 ENERGY SAVER MODE............................................................... 2-63
3. INSTALLATION...........................................................................3-1
3.1 INSTALLATION REQUIREMENTS .......................................................... 3-1
3.1.1 ENVIRONMENT .............................................................................. 3-1
3.1.2 MACHINE LEVEL............................................................................ 3-2
3.1.3 MINIMUM SPACE REQUIREMENTS.............................................. 3-3
3.1.4 POWER REQUIREMENTS.............................................................. 3-4
3.2 COPIER INSTALLATION.......................................................................... 3-5
3.2.1 ACCESSORY CHECK..................................................................... 3-5
3.2.2 COPIER INSTALLATION PROCEDURE......................................... 3-6
3.3 ADF INSTALLATION.............................................................................. 3-10
3.3.1 ACCESSORY CHECK................................................................... 3-10
3.3.2 ADF INSTALLATION PROCEDURE ............................................. 3-11
3.4 PAPER TRAY UNIT (1 TRAY) INSTALLATION ..................................... 3-14
3.4.1 ACCESSORY CHECK................................................................... 3-14
3.4.2 PAPER TRAY UNIT INSTALLATION PROCEDURE..................... 3-15
3.5 PAPER TRAY UNIT (2 TRAYS) INSTALLATION................................... 3-18
3.5.1 ACCESSORY CHECK................................................................... 3-18
3.5.2 PAPER TRAY UNIT INSTALLATION PROCEDURE..................... 3-19
3.6 1-BIN SORTER INSTALLATION............................................................ 3-23
3.6.1 ACCESSORY CHECK................................................................... 3-23
3.6.2 1-BIN SORTER INSTALLATION PROCEDURE............................ 3-24
3.7 PLATEN COVER INSTALLATION.......................................................... 3-29
3.7.1 ACCESSORY CHECK................................................................... 3-29
3.7.2 PLATEN COVER INSTALLATION PROCEDURE......................... 3-29
3.8 EXTENDED MEMORY BOARD INSTALLATION................................... 3-30
3.8.1 ACCESSORY CHECK................................................................... 3-30
3.8.2 EXTENDED MEMORY BOARD INSTALLATION
PROCEDURE................................................................................ 3-31
3.9 DRUM HEATER INSTALLATION (OPTION).......................................... 3-32
3.10 OPTICS ANTI-CONDENSATION HEATER INSTALLATION
(OPTION).............................................................................................. 3-33
3.11 TRAY HEATER INSTALLATION.......................................................... 3-34

iii
4. SERVICE TABLES......................................................................4-1
4.1 GENERAL CAUTION................................................................................ 4-1
4.1.1 AIO CARTRIDGE (ALL-IN-ONE CARTRIDGE)............................... 4-1
4.1.2 TRANSFER ROLLER UNIT............................................................. 4-1
4.1.3 SCANNER UNIT.............................................................................. 4-1
4.1.4 LASER UNIT.................................................................................... 4-2
4.1.5 FUSING UNIT.................................................................................. 4-2
4.1.6 PAPER FEED.................................................................................. 4-2
4.1.7 OTHERS.......................................................................................... 4-2
4.2 SERVICE PROGRAM MODE................................................................... 4-3
4.2.1 SERVICE PROGRAM MODE OPERATION.................................... 4-3
4.1.2 SERVICE PROGRAM MODE TABLES........................................... 4-4
4.1.3 TEST PATTERN PRINTING (SP5-902)......................................... 4-38
4.1.4 INPUT CHECK (SP5-803) ............................................................. 4-39
4.1.5 OUTPUT CHECK (SP5-804) ......................................................... 4-44
4.1.6 COPY JAM HISTORY DISPLAY (SP7-903).................................. 4-46
4.1.7 ORIGINAL JAM HISTORY DISPLAY (SP7-905) ........................... 4-47
4.1.8 SYSTEM PARAMETER AND DATA LISTS (SP5-992).................. 4-48
4.1.9 MEMORY ALL CLEAR (SP5-801)................................................. 4-49
4.1.10 PROGRAM UPLOAD/DOWNLOAD............................................. 4-50
4.1.11 NVRAM DATA DOWNLOAD ....................................................... 4-53
4.1.12 APS AND PLATEN/DF COVER SENSOR OUTPUT DISPLAY
(SP4-301) .................................................................................... 4-55
4.1.13 DF APS SENSOR OUTPUT DISPLAY (SP6-901)....................... 4-56
4.1.14 DISPLAY LANGUAGE (SP5-808)................................................ 4-57
4.1.15 SERIAL NUMBER INPUT (SP5-811)........................................... 4-57
4.3 USER TOOLS......................................................................................... 4-58
4.1.1 HOW TO ENTER AND EXIT USER TOOLS.................................. 4-58
4.1.2 USER TOOLS TABLE ................................................................... 4-58
4.4 LEDS ...................................................................................................... 4-60
4.5 SPECIAL TOOLS AND LUBRICANTS................................................... 4-60
4.5.1 SPECIAL TOOLS........................................................................... 4-60
4.5.2 LUBRICANTS................................................................................ 4-60
5. PREVENTIVE MAINTENANCE SCHEDULE...............................5-1
5.1 PM TABLE................................................................................................ 5-1
5.2 HOW TO CLEAR THE MAINTENANCE COUNTER................................ 5-2
6. REPLACEMENT AND ADJUSTMENT........................................6-1
6.1 EXTERIOR REMOVAL............................................................................. 6-1
6.1.1 REAR COVER................................................................................. 6-1
6.1.2 COPY TRAY.................................................................................... 6-1
6.1.3 LEFT COVER .................................................................................. 6-1
6.1.4 FRONT COVER............................................................................... 6-2
6.1.5 UPPER RIGHT COVER................................................................... 6-3
6.1.6 LOWER RIGHT COVER.................................................................. 6-3
6.1.7 RIGHT SMALL COVER................................................................... 6-3
6.1.8 OPERATION PANEL....................................................................... 6-4

iv
6.2 SCANNER................................................................................................ 6-5
6.2.1 EXPOSURE GLASS REMOVAL...................................................... 6-5
6.2.2 LENS BLOCK REMOVAL................................................................ 6-7
6.2.3 EXPOSURE LAMP REPLACEMENT .............................................. 6-8
6.2.4 1ST SCANNER ALIGNMENT ADJUSTMENT................................. 6-9
6.2.5 2ND SCANNER POSITION ADJUSTMENT.................................. 6-10
6.3 LASER UNIT........................................................................................... 6-11
6.3.1 CAUTION DECAL LOCATIONS.................................................... 6-11
6.3.2 LASER UNIT/TONER SHIELD GLASS REMOVAL....................... 6-12
6.3.3 LD UNIT/LASER SYNCHRONIZATION DETECTOR
REMOVAL..................................................................................... 6-13
6.3.4 EXIT TRAY PAPER SENSOR REMOVAL..................................... 6-13
6.3.5 POLYGONAL MIRROR MOTOR REMOVAL................................. 6-14
6.3.6 LASER UNIT ALIGNMENT ADJUSTMENT................................... 6-15
6.4 IMAGE TRANSFER................................................................................ 6-16
6.4.1 TRANSFER ROLLER REMOVAL.................................................. 6-16
6.5 FUSING.................................................................................................. 6-17
6.5.1 FUSING UNIT REMOVAL ............................................................. 6-17
6.5.2 HOT ROLLER, FUSING LAMP AND THERMOFUSE
REPLACEMENT............................................................................ 6-18
6.5.3 PRESSURE ROLLER REPLACEMENT........................................ 6-20
6.5.4 FUSING THERMISTOR REPLACEMENT..................................... 6-21
6.5.5 HOT ROLLER STRIPPER PAWL REPLACEMENT...................... 6-22
6.6 PAPER FEED......................................................................................... 6-23
6.6.1 PAPER FEED ROLLER REPLACEMENT..................................... 6-23
6.6.2 FRICTION PAD REPLACEMENT.................................................. 6-24
6.6.3 STANDARD TRAY PAPER FEED CLUTCH REPLACEMENT...... 6-25
6.6.4 VERTICAL TRANSPORT ROLLER/SENSOR/
CLUTCH REPLACEMENT ............................................................ 6-26
6.6.5 BY-PASS FEED ROLLER REPLACEMENT.................................. 6-27
6.6.6 BY-PASS FEED FRICTION PAD REPLACEMENT....................... 6-28
6.6.7 BY-PASS FEED SENSOR REPLACEMENT................................. 6-29
6.6.8 BY-PASS TRAY REMOVAL .......................................................... 6-30
6.6.9 BY-PASS FEED PAPER WIDTH SENSOR REMOVAL ................ 6-31
6.6.10 REGISTRATION ROLLER REMOVAL........................................ 6-32
6.6.11 REGISTRATION SENSOR REPLACEMENT.............................. 6-33
6.6.12 TONER END SENSOR REPLACEMENT.................................... 6-34
6.7 OTHERS................................................................................................. 6-35
6.7.1 MAIN MOTOR/GEAR BOX REPLACEMENT................................ 6-35
6.7.2 IOB (INPUT OUTPUT BOARD) REPLACEMENT ......................... 6-36
6.7.3 BICU (BASE-ENGINE IMAGE CONTROL UNIT)
REPLACEMENT............................................................................ 6-37
6.7.4 POWER SUPPLY UNIT AND B/C/T POWER PACK
REPLACEMENT............................................................................ 6-38
6.8 STANDARD WHITE DENSITY ADJUSTMENT...................................... 6-39
6.9 COPY ADJUSTMENT PRINTING/SCANNING....................................... 6-40
6.9.1 PRINTING...................................................................................... 6-40
6.9.2 SCANNING.................................................................................... 6-42
6.9.3 ADF IMAGE ADJUSTMENT.......................................................... 6-44

v
7. TROUBLESHOOTING.................................................................7-1
7.1 SERVICE CALL CONDITIONS................................................................. 7-1
7.1.1 SUMMARY....................................................................................... 7-1
7.1.2 SC CODE DESCRIPTIONS............................................................. 7-2
7.2 BLOWN FUSE TABLE............................................................................ 7-10
7.3 ELECTRICAL COMPONENT DEFECTS................................................ 7-10
7.3.1 SWITCHES.................................................................................... 7-10
7.3.2 SENSORS ..................................................................................... 7-11
OPTIONS
DOCUMENT FEEDER (A859)
1. OVERALL INFORMATION....................................................A859-1
1.1 SPECIFICATIONS..............................................................................A859-1
1.2 MECHANICAL COMPONENT LAYOUT.............................................A859-2
1.3 ELECTRICAL COMPONENT LAYOUT..............................................A859-3
1.4 ELECTRICAL COMPONENT DESCRIPTION....................................A859-4
1.5 DRIVE LAYOUT .................................................................................A859-5
2. DETAILED SECTION DESCRIPTIONS.................................A859-6
2.1 ORIGINAL SIZE DETECTION............................................................A859-6
1.2 PICK-UP AND SEPARATION.............................................................A859-8
1.3 ORIGINAL TRANSPORT AND EXIT MECHANISM...........................A859-9
1.4 STAMP .............................................................................................A859-10
1.5 TIMING CHARTS .............................................................................A859-11
1.5.1 A4 SIDEWAYS.........................................................................A859-11
1.5.2 A4 SIDEWAYS, STAMP MODE...............................................A859-12
1.6 JAM DETECTION.............................................................................A859-13
1.7 OVERALL ELECTRICAL CIRCUIT...................................................A859-14
3. REPLACEMENT AND ADJUSTMENT................................A859-15
3.1 FEED UNIT REMOVAL ....................................................................A859-15
3.2 SEPARATION ROLLER REPLACEMENT........................................A859-15
3.3 PICK-UP ROLLER REPLACEMENT................................................A859-16
3.4 FEED BELT REPLACEMENT ..........................................................A859-16
3.5 ORIGINAL SET SENSOR REPLACEMENT.....................................A859-17
3.6 ORIGINAL WIDTH/LENGTH/TRAILING EDGE SENSOR
REPLACEMENT...............................................................................A859-18
3.7 ORIGINAL EXIT TRAY/FRONT COVER/REAR COVER
REMOVAL........................................................................................A859-19
3.8 FEED COVER OPEN SENSOR/DF OPEN SENSOR
REPLACEMENT...............................................................................A859-19
3.9 FEED CLUTCH/PICK-UP SOL/TRANSPORT MOTOR
REPLACEMENT...............................................................................A859-20
3.10 DF FEED COVER REMOVAL........................................................A859-21
3.11 REGISTRATION SENSOR REPLACEMENT.................................A859-21
3.12 STAMP SOLENOID REPLACEMENT............................................A859-22

vi
PAPER TRAY UNIT (A860)
1. OVERALL MACHINE INFORMATION..................................A860-1
1.1 SPECIFICATIONS..............................................................................A860-1
1.2 MECHANICAL COMPONENT LAYOUT.............................................A860-2
1.3 ELECTRICAL COMPONENT LAYOUT..............................................A860-3
1.4 ELECTRICAL COMPONENT DESCRIPTION....................................A860-4
1.5 DRIVE LAYOUT .................................................................................A860-5
2. DETAILED DESCRIPTIONS .................................................A860-6
2.1 PAPER FEED AND SEPARATION MECHANISM..............................A860-6
2.2 PAPER LIFT MECHANISM ................................................................A860-7
2.3 PAPER END DETECTION .................................................................A860-9
2.4 PAPER HEIGHT DETECTION .........................................................A860-10
1.5 PAPER SIZE DETECTION...............................................................A860-12
1.6 SIDE AND END FENCES.................................................................A860-13
3. REPLACEMENT AND ADJUSTMENT................................A860-14
3.1 FEED ROLLER REPLACEMENT.....................................................A860-14
3.2 TRAY MAIN BOARD REPLACEMENT.............................................A860-15
3.3 TRAY MOTOR REPLACEMENT......................................................A860-15
3.4 RELAY CLUTCH REPLACEMENT...................................................A860-16
3.5 UPPER PAPER FEED CLUTCH REPLACEMENT ..........................A860-17
3.6 LOWER PAPER FEED CLUTCH REPLACEMENT..........................A860-18
3.7 LIFT MOTOR REPLACEMENT........................................................A860-19
3.8 PAPER END SENSOR REPLACEMENT.........................................A860-20
3.9 VERTICAL TRANSPORT SENSOR REPLACEMENT.....................A860-20
3.10 PAPER SIZE SWITCH REPLACEMENT........................................A860-21
PAPER TRAY UNIT (A861)
1. OVERALL MACHINE INFORMATION..................................A861-1
1.1 SPECIFICATIONS..............................................................................A861-1
1.2 MECHANICAL COMPONENT LAYOUT.............................................A861-2
1.3 ELECTRICAL COMPONENT LAYOUT..............................................A861-3
1.4 ELECTRICAL COMPONENT DESCRIPTION....................................A861-4
1.5 DRIVE LAYOUT .................................................................................A861-5
2. DETAILED DESCRIPTIONS .................................................A861-6
2.1 PAPER FEED AND SEPARATION ....................................................A861-6
2.2 PAPER LIFT MECHANISM ................................................................A861-7
2.3 PAPER END DETECTION .................................................................A861-9
2.4 PAPER HEIGHT DETECTION .........................................................A861-10
2.5 PAPER SIZE DETECTION...............................................................A861-12
2.6 SIDE AND END FENCES.................................................................A861-13

vii
3. REPLACEMENT AND ADJUSTMENT................................A861-14
3.1 FEED ROLLER REPLACEMENT.....................................................A861-14
3.2 TRAY MAIN BOARD REPLACEMENT.............................................A861-15
3.3 TRAY MOTOR REPLACEMENT......................................................A861-15
3.4 TRAY MOTOR REPLACEMENT......................................................A861-16
3.5 LIFT MOTOR REPLACEMENT........................................................A861-17
3.6 PAPER END SENSOR REPLACEMENT.........................................A861-18
3.7 PAPER SIZE SWITCH REPLACEMENT..........................................A861-18
1-BIN SORTER (A869)
1. OVERALL INFORMATION....................................................A869-1
1.1 SPECIFICATIONS..............................................................................A869-1
1.2 MECHANICAL COMPONENT LAYOUT.............................................A869-2
1.3 ELECTRICAL COMPONENT LAYOUT..............................................A869-3
1.4 ELECTRICAL COMPONENT DESCRIPTION....................................A869-4
2. DETAILED SECTION DESCRIPTIONS.................................A869-5
2.1 BASIC OPERATION...........................................................................A869-5
3. REPLACEMENT AND ADJUSTMENT..................................A869-6
3.1.1 TOP COVER REMOVAL...........................................................A869-6
3.1.2 TRAY OPEN SWITCH REPLACEMENT...................................A869-6
3.1.3 PAPER SENSOR AND EXIT SENSOR REPLACEMENT.........A869-6

17 May, 1999 SPECIFICATIONS
1-1
Overall
Information
1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Configuration: Desktop
Copy Process: Dry electrostatic transfer system
Originals: Sheet/Book
Original Size: Maximum A3/11" x 17"
Copy Paper Size: Maximum
A3/11" x 17"
Minimum
A5/81/2" x 51/2" sideways (Paper tray)
B6 lengthwise/51/2" x 81/2" (By-pass)
Custom sizes in the by-pass tray:
Width: 90 ~ 305 mm (3.5" ~ 12.0")
Length: 148 ~ 1,260 mm (5.8" ~ 49.6")
Copy Paper Weight: Paper Tray:
60 ~ 90 g/m2, 16 ~ 24 lb
By-pass:
60 ~ 162 g/m2, 16 ~ 43 lb
Reproduction Ratios: 3 Enlargement and 3 Reduction
A4/A3 Version LT/DLT Version
Enlargement 200% 141%
122%
155%
129%
121%
Full Size 100% 100%
Reduction 93% 71%
50%
93%
78%
65%
Zoom: 50% to 200% in 1% steps
Power Source: 120 V, 60 Hz:
More than 10 A (for North America)
220 ~ 240 V, 50/60 Hz
More than 6 A (for Europe/Asia)
110 V, 50/60 Hz
More than 11 A (for Taiwan)

SPECIFICATIONS 17 May, 1999
1-2
Power Consumption:
Mainframe Only Full System
120 V 220 ~ 240 V 120 V 220 ~ 240 V
Maximum Less than
1.1 kW Less than 1.1 kW Less than 1.2 kW Less than 1.3 kW
Copying Approx.
450 W Approx. 450 W Approx. 460 W Approx. 460 W
Warm-up Approx.
860 W Approx. 760 W Approx. 870 W Approx. 770 W
Stand-by Approx.
110 W Approx. 110 W Approx. 130 W Approx. 130 W
Energy Saver Level 1 Approx. 60 W Approx. 60 W Approx. 60 W Approx. 60 W
Energy Saver Level 2 Approx. 30 W Approx. 30 W Approx. 30 W Approx. 30 W
Auto Shut off 0 W 0 W 0 W 0 W
NOTE: 1) Full system: Mainframe + ADF + 1-bin Sorter + Paper Tray Unit
2) Without the optional heaters, fax unit, and printer controller
Noise Emission (Sound Power Level):
Stand-by (Mainframe only): US/Asia Model: 42 dB(A)
Europe Model: 30 dB(A)
Operating (Mainframe only): US/Asia Model: 60 dB(A)
Europe Model: 66 dB(A)
Operating (Full System): 66 dB(A)
Off Mode: 30 dB(A)
NOTE: 1) The above measurements were made in accordance with ISO 7779.
2) Full System: Mainframe + ADF + 1-bin Sorter + Paper Tray Unit
Dimensions (W x D x H): 550 x 575 x 460 mm (21.7" x 22.7" x 18.2")
NOTE: Measurement Conditions
1) With by-pass feed table closed
2) Without the ADF
Weight: Less than 35 kg (78 lb)
Not including ADF, Platen Cover, and AIO

17 May, 1999 SPECIFICATIONS
1-3
Overall
Information
Copying Speed in Multicopy mode (copies/minute):
A4 sideways/
11" x 81/2"A3/11" x 17" B4/81/2" x 14"
Non-memory copy mode 15 10 11
Memory copy mode 18 10 12
NOTE: Measurement Conditions
1) Not APS mode
2) A4/LT copying
3) Full size
Warm-up Time: Less than 30 seconds (20°C, 68°F): 115 V machine
Less than 40 seconds (20°C, 68°F): 230 V machine
First Copy Time: Less than 6.5 seconds
NOTE: Measurement Conditions
1) When polygonal mirror motor is spinning.
2) Not APS mode
3) A4/LT copying
4) Full size
Copy Number Input: Ten-key pad, 1 to 99 (count up or count down)
Manual Image Density: 7 steps
Automatic Reset: 60 seconds is the standard setting; it can be changed
with a User Tool.
Automatic Shut Off: 15 minutes is the standard setting; it can be changed
with a User Tool.
Copy Paper Capacity: Paper Tray:
250 sheets
Optional Paper Tray Unit:
500 sheets x 1, or 500 sheets x 2
By-pass Tray:
100 sheets (A4, B5, A5, B6, 81/2" x 11", 51/2" x 81/2")
10 sheets (A3, B4, 11" x 17", 81/2" x 13")
1 sheets (non-standard sizes)
NOTE: Copy weight: 80g/m2(20 lb).
Toner Replenishment: All-in-one toner cassette cartridge (750 g/cartridge)
Toner Yield: 12 k copies (A4 sideways, 6% full black, 1 to 1 copying,
ADS mode)

SPECIFICATIONS 17 May, 1999
1-4
Optional Equipment: ·Platen cover
·Auto document feeder
·Paper tray unit (1 tray)
·Paper tray unit (2 trays)
·1-bin sorter
·Tray heater
·Optics anti-condensation heater
·Drum heater
·Copier feature expander (48 MB memory)
Copy Capacity: Copy Tray: 250 sheets (without 1-bin sorter),
125 sheets (with 1-bin sorter)
1-bin Sorter: 125 sheets
Memory Capacity:
Standard (16 MB) Optional (+48 MB)
A4, 81/2" x 11" ❍❍
B4, 81/2" x 14" ❍❍
Sort, Rotate Sort A3, 11" x 17" ❍❍
A4 6% 80 sheets 99 sheets
Number of pages A4 ITU-T#4 12% 35 sheets 99 sheets
❍: Available
NOTE: The paper sizes that can be used with Rotate Sort are A4/81/2" x 11"
and B5 only.

17 May, 1999 MACHINE CONFIGURATION
1-5
Overall
Information
1.2 MACHINE CONFIGURATION
Version Item Machine Code No.
Copier A250 D
ADF (Optional) A859 C
Platen Cover (Optional) A893
Paper Tray Unit - 1 tray (Optional) A861
Paper Tray Unit - 2 trays (Optional) A860 E
1-bin Sorter (Optional) A869 B
Copier
Memory 48 MB (Optional) A887
Fax Controller (Optional) A891
Telephone (Optional) H160 A
ISDN (Optional) A890
PC Fax Expander (Optional) A894
Fax
Fax Function Expander (Optional) A892
Printer Controller (Optional) B305
PS Option (Optional) B308
HDD (Optional) G690
NIB (Optional) B307
Printer
Memory 32 or 64 MB (Optional) G688
A250V501.WMF
A
B
C
D
E

PAPER PATH 17 May, 1999
1-6
1.3 PAPER PATH
1. Optional ADF
2. By-pass feed tray
3. Optional paper tray (1 tray)
4. Paper tray
5. Optional 1-bin sorter
A250V000.WMF
2
1
3
4
5

17 May, 1999 MECHANICAL COMPONENT LAYOUT
1-7
Overall
Information
1.4 MECHANICAL COMPONENT LAYOUT
1. 1st mirror (scanner)
2. Exposure lamp
3. Polygonal mirror motor
4. Original width sensor
5. 1st mirror (laser unit)
6. Original length sensor
7. Barrel toroidal lens (BTL)
8. Lens
9. SBU board
10. F-theta mirror
11. Hot roller
12. Pressure roller
13. Transfer roller
14. By-pass feed roller
15. By-pass table
16. Vertical transport roller
17. Paper feed roller
18. Bottom plate
19. All-in-one cartridge (AIO cartridge)
20. 3rd mirror
21. 2nd mirror
A250V561.WMF
11
1 2 3 4 5 6 7 8 9 10
12
14
13
15
16
21
20
19 18 17

ELECTRICAL COMPONENT DESCRIPTIONS 17 May, 1999
1-8
1.5 ELECTRICAL COMPONENT DESCRIPTIONS
Refer to the electrical component layout on the reverse side of the point-to-point
diagram for the location of the components, using the symbols and index numbers.
1.5.1 COPIER ENGINE
Symbol Name Function Index No.
Motors
M1 Scanner Drives the 1st and 2nd scanners. 4
M2 Polygonal Mirror Turns the polygonal mirror. 28
M3 Main Drives the main unit components. 12
M4 Exhaust Fan Removes heat from around the fusing unit. 46
Magnetic Clutches
MC1 Paper Feed Starts paper feed from the tray. 14
MC2 By-pass Feed Starts paper feed from the by-pass table. 15
MC3 Vertical Transport Drives the vertical transport rollers. 18
MC4 Registration Drives the registration rollers. 13
Switches
SW1 Main Provides power to the machine. If this is off, there is no power supplied to the
machine. 40
SW2 Right Door Switch 1 Cuts the +5 V LD dc power line. 30
SW3 Right Door Switch 2 Detects if the front door is open or not, and cuts the +24 V dc power line for the main
motor and power pack. 31
SW4 Vertical Transport
Cover Switch Detects if the front door is open or not, and
cuts the +24 V dc power line for the vertical
transport clutch. 25
SW5 Paper Size Detects paper size. 24
Sensors
S1 Scanner HP Informs the CPU when the 1st and 2nd
scanners are at home position. 3
S2 Original Width Detects original width. This is one of the
APS (Auto Paper Select) sensors. 37
S3 Original Length 1 Detects original length. This is one of the
APS (Auto Paper Select) sensors. 6
S4 Original Length 2 Detects original length. This is one of the
APS (Auto Paper Select) sensors. 6
S5 Toner Near-End Detects toner near-end. 21
S6 Paper End Informs the CPU when the tray runs out of
paper. 23
S7 Paper Near-End Informs the CPU when the paper in the tray is almost finished. The printer
controller uses this sensor. 19

17 May, 1999 ELECTRICAL COMPONENT DESCRIPTIONS
1-9
Overall
Information
Symbol Name Function Index No.
S8 By-pass Tray Paper Informs the CPU that there is paper in the
by-pass feed table. 16
S9 By-pass Paper Size Detects the paper size in the by-pass tray. 20
S10 Vertical Transport Detects misfeeds. 22
S11 Registration Detects misfeeds and controls registration
clutch off-on timing. 17
S12 Fusing Exit Detects misfeeds. 35
S13 Exit Tray Paper Detects if there is paper on the exit tray or
not. 27
S14 Platen Cover Informs the CPU that the platen cover is in the up or down position (related to the
APS/ARE functions). 5
S15 AIO Set Informs the CPU that an AIO is installed. 33
PCBs
PCB1 BICU Controls all base engine functions both
directly and through other control boards. 44
PCB2 PSU Provides dc power to the system and ac
power to the fusing lamp and heaters. 39
PCB3 IOB Controls the fusing lamp and the
mechanical parts of the machine. 45
PCB4 SBU Contains the CCD, and outputs a video
signal to the BICU board. 8
PCB5 Lamp Stabilizer Stabilizes the power to the exposure lamp. 7
PCB6 LD Unit Controls the laser diode. 26
PCB7 Operation Panel Controls the operation panel. 36
PCB8 Memory (Option) Expands memory capacity. —
PCB9 Printer Controller
(Option) Receives print data from a PC. 42
PCB10 FCU (Option) Controls all fax communications and fax
features, in cooperation with the BICU. 43
PCB11 NCU (Option) Switches the analog line between the fax
unit and the external telephone. 47
Lamps
L1 Exposure Lamp Applies high intensity light to the original
for exposure. 2
L2 Fusing Lamp Heats the hot roller. 10
Heaters
H1 Anti-condensation
(Option) Turns on when the main switch is off to prevent moisture from forming on the
optics. 1
H2 Drum (Option) Turns on when the main switch is off to prevent moisture from forming around the
drum. —

ELECTRICAL COMPONENT DESCRIPTIONS 17 May, 1999
1-10
Symbol Name Function Index No.
Others
TF1 Fusing Thermofuse Opens the fusing lamp circuit if the fusing
unit overheats. 9
TH1 Fusing Thermistor Detects the temperature of the hot roller. 11
PP1 C/B/T Power Pack Provides high voltage for the charge,
development and transfer rollers. 38
LSD 1 Laser Synchronization
Detector Detects the laser beam at the start of the main scan. 29
CO1 Total Counter Keeps track of the total number of prints
made. 48
CO2 Key Counter (Option) Used for control of authorized use. If this feature is enabled for coping, coping will be
impossible until it is installed. —
LED1 Exit Tray Indicates if there is paper on the exit tray. 32
LED2 1-bin Sorter Indicates if there is paper on the 1-bin
sorter. 1-bin sorter is option. 34
SP1 Speaker Turns on during fax communication. 41