Ricoh FAX2900L User manual

SCHMIDT 3
RICOH FAX2900L
SERVICE MANUAL
21 May, 1999
Subject to change

Important Safety Notices
Laser Safety
øWARNING FOR LASER UNIT
This machine contains a laser beam generator. Laser beams can cause
permanent eye damage. Do not open the laser unit or look along the laser
beam path while the main power is on.
Lithium Batteries (Memory Back-up)
øCAUTION
The danger of explosion exists if a battery of this type is 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.
H547R500.WMF

Trademarks
Windows 95/98, and Windows NT are registered trademarks of Microsoft
Corporation.
General Notice:
Other product names used herein are for identification purposes only and may be
trademarks of their respective companies. We disclaim any and all rights in those
marks.

i
TABLE OF CONTENTS
1. OVERALL MACHINE INFORMATION........................................1-1
1.1 SPECIFICATIONS....................................................................................1-1
1.2 FEATURES...............................................................................................1-3
1.3 COMPONENT LAYOUT...........................................................................1-7
1.3.1 MECHANICAL COMPONENTS.......................................................1-7
1.3.2 ELECTRICAL COMPONENTS........................................................1-9
1.4 OVERALL MACHINE CONTROL...........................................................1-13
1.5 VIDEO DATA PATH...............................................................................1-14
1.5.1 TRANSMISSION............................................................................1-14
1.5.2 RECEPTION..................................................................................1-15
1.5.3 COPYING......................................................................................1-16
1.5.4 CLASS 2 FAX COMMUNICATION................................................1-17
1.6 POWER DISTRIBUTION........................................................................1-19
1.6.1 DISTRIBUTION DIAGRAM............................................................1-19
1.6.2 MEMORY BACK-UP CIRCUIT......................................................1-20
2. DETAILED SECTION DESCRIPTIONS.......................................2-1
2.1 SCANNER................................................................................................2-1
2.1.1 MECHANISMS.................................................................................2-1
2.1.2 JAM CONDITIONS..........................................................................2-4
2.1.3 RESOLUTION UNIT CONVERSION...............................................2-5
2.2 PRINTING.................................................................................................2-6
2.2.1 PRINTING PROCESS - OVERVIEW...............................................2-6
2.2.2 OPC DRUM.....................................................................................2-7
2.2.3 CHARGE.........................................................................................2-7
2.2.4 LASER EXPOSURE........................................................................2-8
2.2.5 TONER SUPPLY...........................................................................2-10
2.2.6 DEVELOPMENT............................................................................2-12
2.2.7 PAPER FEED................................................................................2-16
2.2.8 REGISTRATION............................................................................2-21
2.2.9 TRANSFER AND SEPARATION...................................................2-23
2.2.10 CLEANING...................................................................................2-25
2.2.11 FUSING.......................................................................................2-26
2.3 SYSTEM FEATURES.............................................................................2-30
2.3.1 ENERGY SAVER MODES............................................................2-30
2.3.2 AUTOMATIC SERVICE CALLS.....................................................2-32
2.3.3 SEP/SUB CODING........................................................................2-33
2.3.4 PAGE SEPARATION AND DATA REDUCTION............................2-36
2.3.5 MEMORY RECEPTION CONDITIONS.........................................2-37
2.3.6 V.8/V.34 PROTOCOL....................................................................2-38
2.3.7 BLANK SHEET DETECTION.........................................................2-40
2.3.8 PARALLEL MEMORY TRANSMISSION.......................................2-41
2.4 PCBS......................................................................................................2-43
2.4.1 FCU...............................................................................................2-43

ii
2.4.2 PSU ............................................................................................... 2-45
2.4.3 NCU (USA) .................................................................................... 2-46
2.4.4 NCU (EUROPE/ASIA) ................................................................... 2-47
3. INSTALLATION...........................................................................3-1
3.1 INSTALLING THE MACHINE................................................................... 3-1
3.2 INITIAL PROGRAMMING......................................................................... 3-1
3.3 INSTALLALING OPTIONAL UNITS.......................................................... 3-2
3.3.1 ISDN G4 UNIT................................................................................. 3-2
3.3.2 COUNTER....................................................................................... 3-3
3.3.3 PC FAX EXPANDER....................................................................... 3-5
4. SERVICE TABLES AND PROCEDURES ...................................4-1
4.1 SERVICE LEVEL FUNCTIONS................................................................ 4-1
4.1.1 BIT SWITCH PROGRAMMING (FUNCTION 01)............................. 4-1
4.1.2 SYSTEM PARAMETER LIST (FUNCTION 02)................................ 4-2
4.1.3 ERROR CODE DISPLAY (FUNCTION 03)...................................... 4-2
4.1.4 SERVICE MONITOR REPORT (FUNCTION 04)............................. 4-2
4.1.5 GROUP 3 PROTOCOL DUMP (FUNCTION 05) ............................. 4-2
4.1.6 PC PROTOCOL DUMP (FUNCTION 05) ........................................ 4-3
4.1.7 RAM DISPLAY/REWRITE (FUNCTION 06)..................................... 4-3
4.1.8 RAM DUMP (FUNCTION 06)........................................................... 4-3
4.1.9 COUNTER DISPLAY/REWRITE (FUNCTION 07)........................... 4-4
4.1.10 NCU PARAMETERS (FUNCTION 08)........................................... 4-5
4.1.11 MODEM TEST (FUNCTION 08).................................................... 4-5
4.1.12 DTMF TONE TEST (FUNCTION 08)............................................. 4-6
4.1.13 V.8 MODEM TEST (FUNCTION 08).............................................. 4-6
4.1.14 V.34 MODEM TEST (FUNCTION 08)............................................ 4-6
4.1.15 RINGER TEST (FUNCTION 08).................................................... 4-7
4.1.16 DIAL PULSE TEST (FUNCTION 08)............................................. 4-7
4.1.17 OPERATION PANEL TEST (FUNCTION 09)................................ 4-7
4.1.18 LED ARRAY TEST (FUNCTION 10).............................................. 4-8
4.1.19 ADF TEST (FUNCTION 10)........................................................... 4-8
4.1.20 PRINTER TEST PATTERNS (FUNCTION 11).............................. 4-8
4.1.21 PRINTER MECHANISM TEST - FREE RUN (FUNCTION 11)...... 4-9
4.1.22 RAM TESTS (FUNCTION 12)........................................................ 4-9
4.1.23 SOFTWARE DOWNLOAD (FUNCTION 12)................................ 4-10
4.1.24 SOFTWARE UPLOAD (FUNCTION 12)...................................... 4-11
4.1.25 SRAM DATA UPLOAD (FUNCTION 12) ..................................... 4-12
4.1.26 SRAM DATA DOWNLOAD.......................................................... 4-12
4.1.27 ISDN G4 SOFTWARE DOWNLOAD........................................... 4-13
4.1.28 SERVICE STATION FAX NUMBER (FUNCTION 13) ................. 4-14
4.1.29 SERIAL NUMBER (FUNCTION 14)............................................. 4-14
4.2 BIT SWITCHES...................................................................................... 4-15
4.2.1 SYSTEM SWITCHES.................................................................... 4-15
4.2.2 SCANNER SWITCHES ................................................................. 4-25
4.2.3 PRINTER SWITCHES................................................................... 4-26
4.2.4 COMMUNICATION SWITCHES.................................................... 4-29
4.2.5 G3 SWITCHES.............................................................................. 4-36

iii
4.3 NCU PARAMETERS .............................................................................. 4-42
4.4 DEDICATED TRANSMISSION PARAMETERS..................................... 4-51
4.4.1 PROGRAMMING PROCEDURE................................................... 4-51
4.4.2 PARAMETERS.............................................................................. 4-52
4.5 SERVICE RAM ADDRESSES................................................................ 4-55
5. PREVENTIVE MAINTENANCE....................................................5-1
5.1 SPECIAL TOOLS AND LUBRICANTS ..................................................... 5-1
5.2 PM TABLE................................................................................................ 5-1
6. REPLACEMENT AND ADJUSTMENT........................................6-1
6.1 EXTERIOR ............................................................................................... 6-1
6.1.1 TOP COVER.................................................................................... 6-1
6.1.2 OPERATION PANEL....................................................................... 6-2
6.2 ADF........................................................................................................... 6-2
6.2.1 FEED ROLLER ASSEMBLY............................................................ 6-2
6.2.2 SEPARATION ROLLER .................................................................. 6-3
6.3 SCANNER................................................................................................ 6-3
6.3.1 SCANNER UNIT DISASSEMBLY.................................................... 6-3
6.3.2 SCANNER MOTOR......................................................................... 6-4
6.3.3 R1/R2 ROLLERS............................................................................. 6-5
6.3.4 CONTACT IMAGE SENSOR ASSEMBLY....................................... 6-6
6.3.5 SCANNER UNIT.............................................................................. 6-6
6.4 LASER PRINTING COMPONENTS ......................................................... 6-7
6.4.1 LASER UNIT.................................................................................... 6-7
6.5 DEVELOPMENT....................................................................................... 6-9
6.5.1 TRANSFER ROLLER...................................................................... 6-9
6.6 FUSING.................................................................................................. 6-10
6.6.1 FUSING UNIT................................................................................ 6-10
6.6.2 THERMISTOR............................................................................... 6-11
6.6.3 HOT ROLLER STRIPPERS........................................................... 6-11
6.6.4 FUSING LAMP AND HOT ROLLER.............................................. 6-12
6.6.5 PRESSURE ROLLER.................................................................... 6-13
6.6.6 THERMOSTAT AND THERMOFUSE............................................ 6-13
6.7 PCBS...................................................................................................... 6-14
6.7.1 NCU............................................................................................... 6-14
6.7.2 PSU ............................................................................................... 6-14
6.7.3 POWER PACK............................................................................... 6-15
6.7.4 FCU ............................................................................................... 6-15
6.8 PAPER FEED......................................................................................... 6-16
6.8.1 SEPARATION PAD ....................................................................... 6-16
6.8.2 PAPER FEED UNIT ASSEMBLY AND PAPER FEED MOTOR.... 6-17
6.8.3 PAPER END SENSOR AND REGISTRATION SENSOR.............. 6-18
6.8.4 PAPER FEED ROLLER/CLUTCH AND TRANSPORT ROLLER... 6-18
6.9 OTHERS................................................................................................. 6-19
6.9.1 INTERLOCK SWITCHES .............................................................. 6-19
6.9.2 MAIN MOTOR................................................................................ 6-20
6.9.3 REGISTRATION ROLLER............................................................. 6-21
6.9.4 TONER END SENSOR.................................................................. 6-22

iv
6.10 PAPER FEED UNIT (OPTIONAL)........................................................ 6-23
6.10.1 TRANSPORT ROLLER ............................................................... 6-23
6.10.2 PAPER FEED ROLLER AND PAPER FEED CLUTCH ............... 6-23
6.10.3 CONNECTOR.............................................................................. 6-24
6.11 MULTI-PURPOSE FEEDER (OPTIONAL) ........................................... 6-25
6.11.1 PAPER FEED ROLLER, SEPARATION PAD, PAPER FEED
CLUTCH AND SOLENOID........................................................... 6-25
6.11.2 PCB ............................................................................................. 6-26
6.12 IMAGE ADJUSTMENT......................................................................... 6-27
6.12.1 OVERVIEW ................................................................................. 6-27
6.12.2 SCANNER PARAMETERS.......................................................... 6-28
6.12.3 PRINTER PARAMETERS............................................................ 6-29
6.12.4 SCANNER VIDEO PROCESSING PARAMETERS..................... 6-31
7. TROUBLESHOOTING.................................................................7-1
7.1 COPY QUALITY TROUBLESHOOTING .................................................. 7-1
7.1.1 BLANK COPIES............................................................................... 7-2
7.1.2 BLACK COPIES............................................................................... 7-2
7.1.3 DIRTY BACKGROUND ................................................................... 7-3
7.1.4 UNEVEN IMAGE DENSITY............................................................. 7-4
7.1.5 VERTICAL BLACK LINES............................................................... 7-5
7.1.6 HORIZONTAL BLACK LINES.......................................................... 7-6
7.1.7 VERTICAL WHITE LINES ............................................................... 7-7
7.1.8 HORIZONTAL WHITE LINES.......................................................... 7-8
7.1.9 BLACK DOTS/SPOTS..................................................................... 7-9
7.1.10 WHITE SPOTS IN BLACK IMAGE AREAS ................................. 7-10
7.1.11 FAINT COPIES............................................................................ 7-11
7.1.12 VERTICAL BLACK BAND............................................................ 7-13
7.1.13 UNFUSED COPIES..................................................................... 7-14
7.1.14 GHOST IMAGE............................................................................ 7-14
7.1.15 TONER ON THE BACK OF THE PRINTER PAPER................... 7-15
7.1.16 INCORRECTLY ALIGNED OUTPUT........................................... 7-15
7.1.17 INCORRECTLY ALIGNED OUTPUT/REDUCED IMAGE ........... 7-16
7.2 MECHANICAL PROBLEMS ................................................................... 7-17
7.2.1 ADF/SCANNER............................................................................. 7-17
7.2.2 PRINTER....................................................................................... 7-20
7.3 ERROR CODES..................................................................................... 7-26
7.4 ELECTRICAL COMPONENT DEFECTS................................................ 7-35
7.4.1 DEFECTIVE SENSOR TABLE ...................................................... 7-35
7.4.2 BLOWN FUSE TABLE................................................................... 7-35

21 May, 1999 SPECIFICATIONS
1-1
Overall
Information
1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Type
Desktop transceiver
Circuit
PSTN, PABX
Connection
Direct couple
Document Size
Length:
105 - 364 mm [4.1 - 14.3 ins]
Up to 1.2 m [47.2 ins], manually
assisted
Width:
148 - 218 mm [5.8 - 8.5 ins]
Thickness:
0.05 to 0.2 mm [2 to 8 mils]
(equivalent to 50 - 90 g/m2)
Document Feed
Automatic feed, face down
ADF Capacity
30 sheets (using Letter size 20 lb paper
or A4 size 80 g/m2)
15 sheets (using LG size 20 lb. paper)
Scanning Method
Contact image sensor, with LED lamp
Maximum Scan Width
216 mm [8.5 ins] ±0.25%
(Effective scan width: 210 mm)
Scan Resolutions
Main scan: 8 dots/mm [203 dpi]
Sub scan:
Standard - 3.85 lines/mm [98 dpi]
Detail - 7.7 lines/mm [196 dpi]
Fine - 15.4 lines/mm [392 dpi]
Memory Capacity
ECM: 128 Kbytes
SAF:
Standard: 960 KB (76 pages/ITU-T #1)
With 1 MB option: (156 pages)
With 2 MB option: (236 pages)
With 4 MB option (396 pages)
Compression
MH, MR, MMR, JBIG (only for the USA
model)
Protocol
Group 3 with ECM
Group 4 (ISDN G4 option required)
Modulation
V.34, V.33 (Ricoh mode only),
V.17 (TCM), V.29 (QAM), V.27ter
(PHM), V.21 (FM)
Data Rate (BPS)
G3:
33,600/31,200/28,800/26,400/24,000/
21,600/19,200/16,800/14,400/12,000/
9600/7200/4800/2400
G4 (option):
64 kbps/56 kbps
I/O Rate
With ECM: 0 ms/line
Without ECM: 2.5, 5, 10, 20, or 40
ms/line
Transmission Time
G3: 3 seconds at 28,800 bps;
Measured with G3 ECM using memory
for an ITU-T #1 test document (Slerexe
letter) at standard resolution
G4 (option): 3 seconds at 64 kbps
Measured with an ITU-T #1 test
document (Slerexe letter) at detail
resolution
Printing System
Laser printing, plain paper, dry toner
Printing Time
10 ppm for letter, or A4 size paper

SPECIFICATIONS 21 May, 1999
1-2
Paper Size and Capacity
Standard Cassette: 250 sheets
Letter, Legal, A4, A5 sideways, F4
Multi-purpose Feeder (Optional):
100 sheets: Letter, Legal, A4,
A5 sideways, F4
Paper Feed Unit (Optional):
500 sheets: Letter, Legal, A4,
A5 sideways, F4
Paper Weight:
16 lb (60 g/m2) to 24 lb (90 g/m2)
Maximum Printing Width
212 mm [8.3 ins] (Letter)
206 mm [8.1 ins] (A4)
Print Resolutions
Fax and Copy Mode:
Main scan: 16 dots/mm [406 dpi]
Sub scan: 15.4 lines/mm [392 lpi]
PC Fax (Optional)
Application Programming Interface
TR29, EIA592: Class - 2
Transmission Speed
14,400/12,000/9,600/7,200/4,800/2,400
bps
(depending on software applications)
Power Supply
USA: 115 ±20 Vac, 60 ±3 Hz
Europe/Asia: 220 - 240 ±15% Vac,
50/60 ±3 Hz
Power Consumption (Base Machine
Only)
Standby: Minimum 2 W; Normal 30 W
Transmit: 50 W
Receive: 250 W
Copying: 300 W
Operating Environment
Temperature: 15 - 25 °C [59 - 77 °F]
Humidity: 30 - 70 %Rh
Dimensions (W x D x H)
410 x 730 x 323 mm
[16.1 x 28.7 x 12.7 ins]
Including trays (Maximum dimensions)
Weight
Approx. 13 kg [28.7 lbs.]
Including cartridge and trays.
NOTE: 1) ISDN G4 unit is a standard component for the I-Schmidt 3.
However, the NCU is not installed in the I-Schmidt 3.
2) JBIG compression is available only in the USA model.
3) The PC Fax Expander option is available only in Europe and Asia.

21 May, 1999 FEATURES
1-3
Overall
Information
1.2 FEATURES
KEY: O = Used, X = Not Used,
A = With optional memory only,
B = With optional multi-purpose feeder only
C = With optional handset only
D = With optional counter only
E = With optional paper feed unit only
F = With optional G4 unit only
G= With optional PCFE only
Equipment
ADF O
Book scan X
Bypass feed: 1 sheet X
Optional cassette
(100 sheets) B
Optional cassette: Universal O
Optional paper feed unit E
Cabinet X
Mechanical counter D
Cutter X
Handset C
Hard disk X
Manual feed mechanism X
Marker (Stamp) O
Monitor speaker O
Optional memory O
Optional printer interface X
Video Processing Features
Automatic image density O
Contrast X
Halftone
(Basic & Error diffusion) O
MTF O
Reduction before TX X
Scanning resolution O
Smoothing to 16 x 15.4 l/mm O
Communication Features - Auto
AI short protocol O
Automatic fallback O
Automatic redialing O
Confidential reception O
Communication Features - Auto
JBIG compression
(USA model only) O
Dual access O
Resolutions available for
reception
Fine
Super fine X X
Substitute reception O
V.34 communication O
Communication Features -
User Selectable
Action as a transfer
broadcaster X
AI Redial (last ten numbers) O
Answering machine interface O
Authorized Reception O
Auto dialing (pulse or DTMF) O
Auto document O
Automatic voice message X
Batch transmission
(max 50 files) O
Broadcasting O
Chain dialing O
Communication result
display X
Confidential ID override O
Confidential transmission O
Direct fax number entry O
Economy transmission X
Fax on demand X
Forwarding O
Groups (7 groups) O
Hold X
ID transmission O
Immediate redialing O
Immediate transmission O
ISDN F
Keystroke programs O
Memory transmission O
Multi-step transfer X
OMR X
On hook dial O
Ordering toner X

FEATURES 21 May, 1999
1-4
Communication Features -
User Selectable
Page count O
Page separation mark O
Parallel memory
transmission O
Personal codes O
Personal codes with conf. ID O
Partial image area scanning X
Polling reception O
Polling transmission O
Polling tx file lifetime in the
SAF X
PWD (tx only) O
Quick dial (30 stations) O
Reception modes
(Fax, Tel, Auto) O
Remote control features X
Remote transfer X
Restricted access O
Secured polling reception O
Secured polling reception
with Stored ID override O
Send later O
SEP (tx only) O
SID (tx only) O
Silent ringing detection X
Specified Image area X
Speed dial (100 stations) O
SUB O
Telephone directory O
Tonal signal transmission O
Transfer request O
Transmission deadline
(TRD) O
Turnaround polling X
Two-step transfer X
Two in one O
Voice request (immediate TX
only) X
Communication Features -
Service Selectable
AI short protocol O
Auto-reduction override
option O
Busy tone detection O
Communication Features -
Service Selectable
Cable equalizer O
Closed network (TX and RX) O
Continuous polling reception O
Dedicated TX parameters O
ECM O
EFC X
Inch-mm conversion O
JBIG compression
(USA model only) O
Page retransmission times O
Protection against bad
connections O
Short preamble X
Other User Features
Automatic service call Service
Center mark O
Checkered mark O
Clearing a memory file O
Clearing a polling file O
Clock O
Confidential ID O
Copy mode O
Copy mode restriction X
Counters O
Daylight saving time O
Destination check X
Direct entry of names O
Energy saver (Night timer
and standby mode) O
File retention time X
File retransmission X
Function programs O
ID code O
Label insertion ("From xxx") O
Language selection O
LCD back light O
LCD contrast control X
Memory lock O
Modifying a memory file X
Multi-sort document
reception X
Multi-copy mode (up to 99) O
Own telephone number O

21 May, 1999 FEATURES
1-5
Overall
Information
Other User Features
PC scanner G
PC fax G
PC print G
Print density control X
Printing a memory file O
Printing a quick dial sheet O
Quick dial label printing O
RDS on/off O
Reception mode switching
timer X
Reception time printing O
Remaining memory indicator O
Remote ID X
Reverse order printing O
RTI, TTI, CSI O
Service report transmission X
Speaker volume control O
Specified cassette selection E
Substitute reception on/off O
Telephone line type O
Toner saving mode X
User function keys (2 keys) O
User parameters O
Wild cards O
Reports - Automatic
Charge control report X
Communication failure report O
Communication result report O
Confidential file report O
Error report O
File clear report X
File reserve report X
Journal O
Power failure report O
Toner cassette order form X
Transfer result report O
Transmission result report O
Reports - User-initiated
Charge control report X
File list O
Group list O
Help list O
Reports - User-initiated
Journal O
Personal code list O
Program list O
Programmed special
numbers list O
Quick dial / User function list O
Speed dial list O
Transmission status report X
User parameter list O
Service Mode Features
Back-to-back test O
Bit switch programming O
Book mode test X
Cable equalizer O
Comm. Parameter display O
Counter check O
Country code O
DTMF tone test O
Echo countermeasure O
Effective term of service calls O
Error code display O
Excessive jam alarm O
File transfer (all files) O
LCD contrast adjustment X
Line error mark O
Memory file printout (all files) O
Modem software download X
Modem test O
NCU parameters O
Operation panel test O
Periodic service call O
PM call O
Printer mechanism test O
Printer test patterns O
Programmable attenuation X
Protocol dump list O
RAM display/rewrite O
RAM dump O
RAM test O
RDS O
Ringer test X
Scanner lamp test O
Scanner mechanism test O
Sensor initialization X

FEATURES 21 May, 1999
1-6
Service Mode Features
Serial number O
Service monitor report O
Service station number O
Software upload/download O
SRAM data download O
System parameter list O
Technical data on the
Journal O
Thermal head parameters X
Memory Files
Maximum number of files: 100
Maximum number of stations/file: 140
Maximum number of stations: 300

21 May, 1999 COMPONENT LAYOUT
1-7
1.3 COMPONENT LAYOUT
1.3.1 MECHANICAL COMPONENTS
No Name Description
1 R2 Roller Feeds the document through the scanner.
2 R1 Roller Feeds the document through the scanner.
3 Separation Roller Allows one page into the scanner.
4 Document Feed Belt Feeds the document into the scanner.
5 Pick-up Roller Picks up document pages from the document table
one at a time.
6 Pressure Plate Applies pressure against the pick-up roller.
7 All-in-One Cartridge Consists of the toner cartridge, cleaning unit, used
toner tank, charge brush roller, application roller,
development roller and OPC drum.
8 Laser Unit Consists of the LDDR (Laser Diode Driver), focusing
lens, hexagonal mirror motor, and other laser optic
components.
9 Paper Feed Roller Picks up the top sheet of paper from the stack in the
cassette, and feeds it into the printer.
10 Separation Pad Allows one sheet of paper into the printer.
11 Registration Roller Carries out the registration process.
12 OPC Drum The latent image is written to this organic
photoconductor drum.
H547V501.WMF
1 52 3 4 6 8
9
11131415
16
17
18
10
7
12

COMPONENT LAYOUT 21 May, 1999
1-8
No Name Description
13 Transfer Roller Applies a charge to the paper to pull the toner off the
drum and onto the copy paper.
14 Hot Roller Heat from this roller fuses the toner to the copy paper.
15 Fusing Pressure Roller Applies pressure to the paper during the fusing
process.
16 Paper Feed-out Rollers Feed the paper out of the printer.
17 Hot Roller Strippers Take the paper off the hot roller after fusing.
18 Cleaning Pad Cleans up and spreads silicone oil on the surface of
the hot roller.

21 May, 1999 COMPONENT LAYOUT
1-9
1.3.2 ELECTRICAL COMPONENTS
H547V502.WMF
H547V503.WMF
123456
9
11
12
14
16
18
20
19
21
13
27
24
25
29
30
15
23
7
8
17
10
26
22
28

COMPONENT LAYOUT21 May, 1999
1-10
1. PCBs
No Name Description
2CIS (Contact Image
Sensor) This sensor reads andconverts thelight reflectedfrom the document intoan analog video signal.
5LDDR (Laser Diode
Driver) This board drives the laser diode.
24 NCU (Network Control
Unit) This board contains relays and switches for interfacing the machine with thenetwork andthehandset.
25 DIU (Digital Interface
Unit) forPCFE Option This is an interface board for an optional PC Fax Expander (not available in some countries).
26 OPU (Operation Panel
Unit) This board controls the operation panel.
27 FCU (Facsimile Control
Unit) This board controls the machine. It contains the main CPU, flash ROM, system RAM, etc.
28 G4 Interface (SiG4
option) This is an interface for themachine and anISDN network.
29 Power Pack Supplies high voltageto the charge brushroller,
transfer roller and development rollers.
30 PSU (Power Supply
Unit) This board supplies power tothemachine, and switches the fusing lamp on/off.
2. Motors
No Name Description
4Polygon Mirror Motor This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.
7Main Motor This steppermotor drives the All-in-One cartridge and
the fusing unit.
11 Paper Feed Motor This steppermotor drives the registration roller and
the paper feed mechanisms in thecassettes.
15 Scanner Motor This steppermotor drives the scanner.
21 Cooling Fan Motor Cools the interior of themachine.
3. Sensors
No Name Description
1Document Sensor Detects thepresence of adocument in the feeder.
3Paper End SensorDetects when the paper in thecassettehas run out.
6Paper Edge SensorDetects when the paper has passedthepaperfeed
components.
8Rear Upper Cover SwitchDetects whether the rear upper cover is open or
closed.
9Rear Lower Cover SwitchDetects whether the rear lower cover is open or
closed.
16 Registration SensorDetects when paper reaches theregistration roller.
19 Fusing Exit SensorDetects when the paperfeeds out of theprinter.
23 Toner End Sensor Detects when the toner has runout.

21 May, 1999 COMPONENT LAYOUT
1-11
4. Interlock Switches
No Name Description
12
13 Interlock Switches If the fusing unit cover and/or top cover are open,
these switches interrupt the +5VLD power supply for
the laser diode and the +24VD power supply for the
power pack, motors, and other components.
5. Others
No Name Description
10 Paper Feed Clutch Transfers drive from the paper feed motor to the paper
feed roller.
14 Monitor Speaker Allows the user to hear the telephone line condition.
17 Fusing Lamp The heat from this lamp fuses the toner to the paper.
18 Thermistor Monitors the temperature on the hot roller surface.
20 Thermostat Interrupts the ac power supply for the fusing lamp if
the thermostat temperature exceeds 400°C.
22 Stamp Solenoid This turns on to stamp the document.

COMPONENT LAYOUT 21 May, 1999
1-12
6. Optional Paper Feed Unit and Multi Purpose Feeder
No Name Description
1Paper End Sensor
(Paper Feed Unit) This detects when the paper in the cassette has run out.
2 Paper Feed Roller
(Paper Feed Unit) Picks up the top sheet of paper from the stack in the cassette, and feeds it into the printer.
3 Paper Feed Clutch
(Paper Feed Unit) Transfers drive from the paper feed motor in the mainframe to the paper feed roller in the cassette.
4Cassette Switch
(Paper Feed Unit) This detects whether the cassette is installed or not.
5 Rear Cover Switch
(Paper Feed Unit) This detects whether the rear cover is open or close.
6Paper Feed Roller
(Multi-purpose Feeder) Picks up the top sheet of paper from the stack in the feeder, and feeds it into the printer.
7 Paper Feed Solenoid
(Multi-purpose Feeder) Transfers drive from the paper feed motor in the mainframe to the paper feed roller in the feeder.
8 Paper End Sensor and
Paper Width Sensor
(Multi-purpose Feeder)
Paper end sensor: This detects when the paper in the
feeder has run out.
Paper width sensor: This detects the paper width
installed in the feeder.
H547V516.WMF
H547V504.WMF
12
4
6
7
8
3
5

21 May, 1999 OVERALL MACHINE CONTROL
1-13
1.4 OVERALL MACHINE CONTROL
The FCU (Facsimile Control Unit) contains logical components for overall system
control, and a direct interface to the IC card, G4 interface (SiG4), and an RS232C
interface.
NOTE: The RS232C interface is not available in some countries.
There are two CPUs in the machine: the main CPU (FCIP05) and the energy saver
CPU. The FCIP05 contains components such as the 8 bit CPU (RU8), DIP (Digital
Image Processor), LIF (Laser Interface), DCR (Data Compression and
Reconstruction) and DMA Controller.
In energy saver mode, the main CPU switches off and the energy saver CPU takes
over.
AFE
Flash
ROM DRAMSRAM
Modem FCIP05
SYSTEM BUS
FCU
EXIO
Optional
IC Card SiG4 Interface
Energy
Saver
CPU I/O Driver
24V Driver
Motor
Driver
RS232C
Interface
Amplifier
NCU
Optional
PFU Stamp Polygon Motor Operation Panel
LDDR
Power Pack
Main Motor
Contact
Image Sensor
Tx and Paper
Feed Motors
H547V505.WMF