Ricoh fax2000 SPECIFICATIONS fx2900
SCHMIDT 3
RICOH FAX2900L
SERVICE MANUAL
21 May, 1999
Subject to change
Important Safety Notices
H547R500.WMF
Laser Safety
WARNING FOR LASER UNIT
ø
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)
CAUTION
ø
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.
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.
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 CLASS2 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
i
2.4.2 PSU ............................................................................................... 2-45
2.4.3 NCU (USA) .................................................................................... 2-46
2.4.4 NCU (EUROPE/ASIA) ................................................................... 2-47
3. INSTALLA T ION...........................................................................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
ii
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
iii
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
iv
21 May, 1999 SPECIFICATIONS
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/m
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)
2
)
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
3 seconds at 28,800 bps;
G3:
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
Overall
Information
1-1
SPECIFICATIONS 21 May, 1999
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:
2)
16 lb (60 g/m
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
115 ± 20 Vac, 60 ± 3 Hz
USA:
Europe/Asia:
220 - 240 ±15% Vac,
50/60 ± 3 Hz
Power Consumption (Base Machine
Only)
Standby:
Transmit:
Receive:
Copying
Minimum 2 W; Normal 30 W
50 W
250 W
: 300 W
Operating Environment
Temperature:
Humidity:
15 - 25 °C [59 - 77 °F]
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.
1-2
21 May, 1999 FEATURES
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)
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)
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
B
O
Communication Features - Auto
JBIG compression
(USA model only)
Dual access O
Resolutions available for
reception
Fine
Super fine
Substitute reception O
V.34 communication O
Communication Features -
User Selectable
Action as a transfer
broadcaster
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)
Broadcasting O
Chain dialing O
Communication result
display
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
O
X
X
X
O
X
Overall
Information
1-3
FEATURES 21 May, 1999
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
X
only)
Communication Features -
Service Selectable
AI short protocol O
Auto-reduction override
O
option
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 retransmissi o n ti me s 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
O
and standby mode)
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
Memory lock O
Modifying a memory file X
Multi-sort document
X
reception
Multi-copy mode (up to 99) O
Own telephone number O
X
1-4
21 May, 1999 FEATURES
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
X
timer
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 - Auto ma tic
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
Overall
Information
1-5
FEATURES 21 May, 1999
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
Thermal head parameters X
O
Memory Files
Maximum number of files: 100
Maximum number of stations/file: 140
Maximum number of stations: 300
1-6
21 May, 1999 COMPONENT LAYOUT
1.3 COMPONENT LAYOUT
1.3.1 MECHANICAL COMPONENTS
18
17
16
1 52 3 4 6 8
12
7
11131415
9
10
H547V501.WMF
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
6 Pressure Plate Applies pressure against the pick-up roller.
7 All-in-One Cartridge Consists of the toner cartridge, cleaning unit, used
8 Laser Unit
9 Paper Feed Roller
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
Picks up document pages from the document table
one at a time.
toner tank, charge brush roller, application roller,
development roller and OPC drum.
Consists of the LDDR (Laser Diode Driver), focusing
lens, hexagonal mirror motor, and other laser optic
components.
Picks up the top sheet of paper from the stack in the
cassette, and feeds it into the printer.
photoconductor drum.
1-7
COMPONENT LAYOUT 21 May, 1999
No Name Description
13 Transfer Roller
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
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
Applies a charge to the paper to pull the toner off the
drum and onto the copy paper.
process.
the hot roller.
1-8
21 May, 1999 COMPONENT LAYOUT
1.3.2 ELECTRICAL COMPONENTS
21
20
22
19
23
18
1
2
3
4
5
6
7
8
9
10
11
H547V502.WMF
12
13
17
16
15
14
29
24
25
30
26
27
28
H547V503.WMF
1-9
COMPONENT LAYOUT 21 May, 1999
1. PCBs
No Name Description
CIS (Contact Image
2
Sensor)
5 LDDR (Laser Diode
Driver)
24 NCU (Network Control
Unit)
25 DIU (Digital Interface
Unit) for PCFE Option
26 OPU (Operation Panel
Unit)
FCU (Facsimile Control
27
Unit)
28 G4 Interfac e (S iG4
option)
29 Power Pack Supplies hig h voltage to the charge brush roller,
PSU (Power Supply
30
Unit)
This sensor reads and converts the light reflected from
the document into an analog video signal.
This board drives the laser diode.
This board contains relays and switches for interfacing
the machine with the network and the handset.
This is an interface board for an optional PC Fax
Expander (not available in some countries).
This board controls the operation panel.
This board controls the machine. It contains the main
CPU, flash ROM, system RAM, etc.
This is an interface for the machine and an ISDN
network.
transfer roller and development rollers.
This board supplies power to the machine, and
switches the fusing lamp on/off.
2. Motors
No Name Description
4 Polygon Mirror Motor This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.
7 Main Motor This stepper motor drives the All-in-One cartridge and
the fusing unit.
11 Paper Feed Motor This stepper motor drives the registration roller and
the paper feed mechanisms in the cassettes.
15 Scanner Motor This stepper motor drives the scanner.
21 Cooling Fan Motor Cools the interior of the machine.
3. Sensors
No Name Description
1 Document Sensor Detects the presence of a document in the feeder.
3 Paper End Sensor Detects when the paper in the cassette has run out.
6 Paper Edge Sensor
8 Rear Upper Cover Switch Detects whether the rear upper cover is open or
9 Rear Lower Cover Switch Detects whether the rear lower cover is open or
16 Registration Sensor Detects when paper reaches the registration roller.
19 Fusing Exit Sensor Detects when the paper feeds out of the printer.
23 Toner End Sensor Detects when the toner has run out.
Detects when the paper has passed the paper feed
components.
closed.
closed.
1-10
21 May, 1999 COMPONENT LAYOUT
4. Interlock Switches
No Name Description
1213 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.
1-11
COMPONENT LAYOUT 21 May, 1999
6. Optional Paper Feed Unit and Multi Purpose Feeder
1
2
5
3
8
H547V504.WMF
4
No Name Description
Paper End Sensor
1
(Paper Feed Unit)
2 Paper Feed Roller
(Paper Feed Unit)
3 Paper Feed Clutch
(Paper Feed Unit)
Cassette Switch
4
(Paper Feed Unit)
5 Rear Cover Switch
(Paper Feed Unit)
Paper Feed Roller
6
(Multi-purpose Feeder)
7 Paper Feed Solenoid
(Multi-purpose Feeder)
8 Paper End Sensor and
Paper Width Sensor
(Multi-purpose Feeder)
This detects when the paper in the cassette has run
out.
Picks up the top sheet of paper from the stack in the
cassette, and feeds it into the printer.
Transfers drive from the paper feed motor in the
mainframe to the paper feed roller in the cassette.
This detects whether the cassette is installed or not.
This detects whether the rear cover is open or close.
Picks up the top sheet of paper from the stack in the
feeder, and feeds it into the printer.
Transfers drive from the paper feed motor in the
mainframe to the paper feed roller in the 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.
7
6
H547V516.WMF
1-12
21 May, 1999 OVERALL MACHINE CONTROL
1.4 OVERALL MACHINE CONTROL
Optional
IC Card
Flash
ROM
Modem FCIP05
AFE
NCU
Energy
Saver
CPU
Optional
PFU
24V Driver
Stamp
DRAMSRAM
SYSTEM BUS
EXIO
Polygon
Motor
Interface
Operation
Panel
SiG4
RS232C
Interface
FCU
I/O Driver
Motor
Driver
Amplifier
LDDR
Power Pack
Main Motor
Tx and Paper
Feed Motors
Contact
Image Sensor
H547V505.WMF
The FCU (Facsimile Control Unit) contains logical components for overall system
control, and a direct in terface to the IC card, G4 interface (SiG4), and an RS232C
interface.
NOTE:
The RS232C interf ace 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.
1-13
VIDEO DATA PATH 21 May, 1999
1.5 VIDEO DATA PATH
1.5.1 TRANSMISSION
Contact Image Sensor
HIC
SiG4
FCU
NCU
To PSTN
To ISDN
H547V509.WMF
Amplifier
DIP
JBIG FCIP05
DCR
DATA/ADDRESS BUS
Line
Buffer
ECM/DCR
Buffer
Modem
DRAM
SAF
Memory
Immediate Transmission:
Scanned data from the contact image sensor passes to the DIP in the FCIP05.
After analog/digital video processing, the DCR (or the JBIG LSI if JBIG
compression is to be used) compresses the data for transmission. The compressed
data passes through the DCR buffer, then to the ECM memo ry before entering the
telephone line through the modem.
Memory Transmission:
First, the scanned data is stored in the SAF memory after compression in the DCR.
At the time of transmission, the DCR decompresses the data from the SAF
memory, then compresses it again (or the JBIG LSI compresses the data if JBIG
compression is to be used) for transmission. The compressed data passes through
the DCR buffer, then to the ECM memory before entering the telephon e line
through the modem.
During G4 transmission, the compressed data from the DCR buffer passes through
the SiG4 board.
Parallel Memory Transmission
This feature allows the machine to scan a document into the SAF memory and
send the same document simultaneously.
The machine stores the processed video data in the SAF memory and sends the
data through modem at the same time.
1-14
21 May, 1999 VIDEO DATA PATH
1.5.2 RECEPTION
From ISDN
SiG4
Line
Buffer
JBIG
Data/ Address Bus
SAF
Memory
ECM/DCR
From PSTN
NCU
HIC
Modem
FCIP05
DCR LIF
Buffer
Page
Memory
FCU
LDDR
DRAM
Copy Paper
H547V510.WMF
Data from the line passes to the modem through the NCU and hybrid integra ted
circuit (HIC). After the modem demodulates the data, it passes through the ECM
memory, DCR buffer, then to the DCR (or the JBIG LSI), which decompresses it
into raster image data. At the same time, the compressed data passes to the SAF
memory as a backup in case of mechanical problems during printing (substitute
reception).
During G4 reception, data from the ISDN line passes to the DCR for
decompression.
The raster image data then passes to the page memory for printing. After a page of
data has been stored in the page memory, the data is sent to the LDDR through
the LIF.
1-15
VIDEO DATA PATH 21 May, 1999
1.5.3 COPYING
Contact Image Sensor
Line
Buffer
Amplifier
FCIP05
DCR LIF
Data/ Address Bus
SAF
Memory
ECM/DCR
DRAM
DIP
Buffer
FCU
LDDR
Page
Memory
Copy Paper
H547V511.WMF
Single copy
The scanned data passe s to the page memory after video processing in the DIP.
After a page of data has been stored in the page memory, the data is sent to the
LDDR through the LIF.
Multi-page copy
The scanned data passe s to the SAF memory after video processing (DIP) and
compression (DCR). After a page of data has been stored in the SAF memory, the
data passes to the DCR again for decompression, and then it passes to the page
memory for printing.
1-16
21 May, 1999 VIDEO DATA PATH
1.5.4 CLASS2 FAX COMMUNICATION
Direct transmission
SAF
DCR
IBM Compatible
FCU
ModemDIU
NCU
H547V520.WMF
The host computer sends commands and image data to the machine through the
DIU (Digital Interface Unit) during transmission.
NOTE:
1) Group dials programmed in the machine cannot be used.
2) T.30 optional protocols (e.g., BFT) are not supported by class 2 fax
communication.
3) ISDN G4 numbers programmed in quick or speed dials cannot be used.
4) ISDN G3 communication is not possible for PC direct transmission.
Memory Transmission
SAF
FCU
DCR
ModemDIU
IBM Compatible
NCU
H547V521.WMF
The host computer sends destination number(s) and image data to the machine
through the DIU during transmission. The machine stores the image in the SAF
memory, then makes a fax transmission.
NOTE:
1) If the memory overf lows while storing the first page into SAF memory,
the machine does not start the transmission.
2) If the memory overflows while storing the second or subsequent page
into SAF memory, the machine transmits all the successfully stored
pages.
3) When fax numbers programmed in the machine’s quick or speed dials
are specified using the PC fax application, all the specified numbers
must have been programmed in the fax machine.
4) T.30 optional protocols (e.g., BFT) are not supported by class 2 fax
communication.
1-17
VIDEO DATA PATH 21 May, 1999
Direct Reception
SAF
DCR
IBM Compatible
FCU
ModemDIU
NCU
H547V522.WMF
The machine transf ers received image data directly to the host PC without storing it
into SAF memory.
NOTE:
1) If the host PC is not ready to receive a fax message, the machine
receives the message into SAF memory if the user parameter switch 0E
bit 1 is turned on.
2) Even if the SAF memory is full, the machine starts fax reception if there
is no mechanical error in the printer.
Memory Reception
SAF
DCR
FCU
ModemDIU
IBM Compatible
NCU
H547V523.WMF
The machine receives a fax message in the SAF memory, then transfers data to
the host computer after the reception has finished. The machine prints the received
message after transferring data to the host if user parameter 14 -bit 3 and 4 is set
to “1, 1: Print”.
NOTE:
1) If an error occurs due to cable disconnection, the PC fax application
must be restarted to re ceive the message.
2) Manual reception from the PC fax application is not supported.
1-18
21 May, 1999 POWER DISTRIBUTION
1.6 POWER DISTRIBUTION
1.6.1 DI STRIBUTION DIAGRAM
AC
Main
Power
AC Switching
Fusing Lamp
ON/OFF
Switching
AC115V or
Fusing Lamp
Circuit
Circuit
230V
PC I/F
Main Switch
PSU
24VIN
+5V
+5VE
IC
Card
+5VD
-9V
FCU
+24V
24VM
24VD
Paper Feed
Unit
+5V
+5VD +3VD
DC-DC
Converter
DC-DC
Converter
Interlock
Switch
+24VMS
DC-DC
Converter
Multi Purpose
Feeder
-9V
+5V
+5VE
+5VLD+5V
Polygon
Motor
+24VMS
+5V
+5VBAT +3VBAT
+24VM
DC-DC
Converter
+5VD
DC-DC
Converter
+5VLD
+24V
+5V
+5VEE
LDDR Image Sensor
NCU
Main
Paper Feed
Motor
+5V +3VV
+5V +3V
+24VMM
DC-DC
Converter
DC-DC
Converter
+24VM
-9VV
+5VV
Clutch
+24VMS
+24VMM
+24VM
+5V
-9V
+24VPP
+5VT
+5V
+5VOPP
+5VE
+24VMM
+24V
Paper Feed
Motor
Fusing Fan
Power Pack
Thermistor
Sensors
Operation Panel
Scanner Motor
Toner End
Sensor
H547V515.WMF
The PSU supplies +24V dc power to the FCU. The FCU converts the +24V to the
following supplies.
+24V Normally on when the main switch is.
+24VD This is interrupted if the fusing unit cover interlock switch opens.
+24VIN
Supplies +24V to the fusing unit on/off switching circuit. It is interrupted if the fusing
unit cover interlock switch opens.
+24VMM For the scanner, paper feed, and main motors.
+24VPP For the power pack.
+5V Normally on when the main switch is.
+5VBAT Supplies back up power to the system RAM on the FCU to back up the
programmed data. A lithium battery generates +5VBAT.
+5VD Supplies back up power for the DRAM and the optional IC card on the FCU. It can
back up stored data for one hour after the power is switched off. A rechargeable
battery on the FCU generates +5VD.
+5VE Detects an activation signal from the NCU, SiG4 (G4 Unit), document feeder, or
operation panel when the machine is in energy saving mode.
+5VLD
Supplies the laser diode. It is interrupted if the fusing unit cover interlock switch
opens.
+5VT For the thermistor.
+5VV This is a more stable power supply than +5V. It is used for the contact image
sensor.
+3V For the FCIP05 internal circuits.
+3VBAT For the FCIP05 SRAM backup
+3VD For the FCIP05 DRAM backup.
+3VV For the FCIP05 AD convertor.
-9V For the image sensor.
1-19
POWER DISTRIBUTION 21 May, 1999
1.6.2 M EM O RY B ACK-UP CI RCUI T
FCU
+5V
POWERS
+5VD
5RTCCS
FCIP05
1VDET
1SAFFG
DRAM
[A]
IC Card
+
-
Switching
Circuit
+5VBAT
System
RAM
+5VBAT+5VD
H547V513.WMF
[B]
+5VE
DC/DC
Converter
+5V
Q29
The +5VBAT supply from the lithium battery [A] backs up the system RAM, which
contains system parameters, programmed telephone numbers, and the real time
clock in the main CPU. The 5RTCCS signal tells the main CPU whether the backup power (+5VBAT) is coming from the battery or from the +5V power supply.
A rechargeable lithium battery [B] and the DC/DC converter on the FCU back up
the DRAM (SAF memory) for one hour, if there is data in the SAF memory and the
power is switched off. While the main power is on, the +5VE supply recharges the
battery. The battery recharges in 5 or 6 days.
The battery [B] generates about 3 volts (max. 3.2 volts). The DC/DC converter
raises this voltage to 5 volts so it can be used as the +5VD supply for the SAF
backup. The CPU monitors the voltage of the +5VD supply with the 1VDET signal.
When the ba ttery has run down, and the voltage is lower than 4.4 volts, the CPU
stops the DC/DC converter by dropping 1SAFFG to low and the machine stops
backing up the memory.
NOTE:
There is no battery switch for the battery [B].
1-20
21 May, 1999 SCANNER
2. DETAILED SECTION DESCRIPTIONS
2.1 SCANNER
2.1.1 MECHANISMS
Document Detection
[A]
H547D512.WMF
The document sensor [A] detects a document when it is placed in the ADF.
Pick-up and Separation and Drive Mechanism
[A]
[D]
[C]
[B]
Detailed
Descriptions
[F]
[G]
[E]
H547D502.WMF
The pressure plate [A] aligns the leading edges of the pa ges of the document.
When the machine starts feeding the document, the mechanical clutch in the ADF
roller unit lifts up the pick-up rollers [B] to feed the bottom sheet of the document.
Then, the feed belt [C] feeds the sheet into the scanner.
The separation roller [D] prevents the feed belt from feeding more than one sheet
at a time.
The scanner motor [E] drives the pick-up rollers [B], feed belt [C], R1 roller [F], and
R2 roller [G].
Cross Reference
ADF mechanical clutch mechanism: Group 3 Facsimile Manual, page 2-2-8.
Maximum document length: Scanner Switch 0 0, bits 2 and 3.
2-1
SCANNER 21 May, 1999
Image Scanning
[A]
[B]
[C]
H547D503.WMF
The image sensor [B] consists of a row of 1728 photosensitive elements (Letter
width x 8 dots/mm). The document reflects light from the LED array and the rod
lens array focuses it onto the image sensor. Because of the short optical path
inside the CIS, the focal depth is mu ch shorter than for a CCD type scanner.
Consequently, the spring plates [C] push the white roller [A] so that the document
surface always touches the exposure glass at the scan line.
The image sensor assembly is factory adjusted, so it does not require adjustment
or replacement in the field.
The image sensor scans the original one line at a time, and outputs an analog
signal for each line. The voltage from each element depends on the intensity of the
light reflected from the original onto the element; the light intensity depends on the
darkness of the document area it was reflected from.
The white roller [A] must be kept clean, because the machine scans it every page
to calibrate the white level (auto shading).
Scanning Speed
The scanning speed for each resolution is as described below.
Resolution Scan Speed (A4)
Standard - Memory Tx 1.85 s
Standard - Immediate Tx 3.68 s
Detail 3.68 s
Fine 7.35 s
2-2
21 May, 1999 SCANNER
Stamping
FCU
FCIP05
+24VM
EXIO
Stamp
Solenoid
The machine stops the document at the stamping position after the page is
transmitted (immediate transmission) or scanned into memory (memory reception)
successfully.
30-1
30-3
24V Driver
H547D570.WMF
Detailed
Descriptions
The machine drops the signal at CN30-3 to activate the stamp solenoid. Then the
original is fed out of the sensor.
2-3
Loading...