Panasonic UF 890 - Panafax B/W Laser User manual

Order Number : MGCS020201C1
H13
Facsimile
UF-890 / 990
© 2002 Matsushita Graphic Communication Systems, Inc.
All rights reserved. Unauthorized copying and distribution is
a violation of law.

The contents of this Service Manual are subject to change without notice.
Published in Japan.
2

Table of Contents
3
Specifications Table...................................5
1.1 Fax Function.............................................5
1.2 Printer Function ......................................13
1.3 External View..........................................14
1.4 Control Panel..........................................16
Disassembly Instruction...........................17
2.1 General Disassembly Flowchart.............17
2.2 Power Cord (1108), Telephone Line
Cable (1107), Document Return Tray
(138 and 139), Recording Paper Tray
(1106), Paper Cassette (1018)...............18
2.3 Sub Rear Cover (114), Rear Cover (108),
Left Side Cover (107), Front Cover (105),
Speaker (133)........................................19
2.4 Paper Guide Cover (110), Transmit
Guide (117), SNS Assembly (121) .........21
2.5 Low Voltage Power Supply Unit (502),
FCB PC Board (522), LCU PC Board
(519), LPC PC Board (555), Control
Panel Unit, PNL PC Board (214) ............23
2.6 Transmitter Chassis (301), Scanner
Assembly (340), LED Array Assembly
(333), Verification Stamp Assembly........27
2.7 ADF Roller (323), Pre-Feed Roller (325),
Eject Roller (330), Feed Roller (328),
Transmission Gear Assembly, Transmit
Motor (346).............................................29
2.8 Toner Sensor (639), Timing Sensor
(610), Bias Transfer Roller (630) ...........32
2.9 Fuser Unit (431), Fuser Lamp (408),
Thermistor Assembly (405), Paper Exit
Sensor (610)...........................................34
2.10 Fuser Roller (414), Pressure Roller
(409), Eject Roller (422)..........................38
2.11 Fan Duct (520), Printer Motor (650),
Motor Bracket (641)................................40
2.12 Laser Unit (429), Feed Roller (618),
Paper Feed Roller (746), Clutch Gear
Assembly (660), Paper Feed Solenoid
(744), Fan Unit (622) ..............................42
2.13 ILS PC Board (621), No Paper Actuator
(609), Catch Magnet (730)......................44
2.14 High Voltage Power Supply
(HVPS) (506)..........................................45
2.15 Parallel Port Interface Assembly (671)...46
2.16 Screw Identification Template.................47
Maintenance, Adjustments and
Check Points ...........................................48
3.1 Required Tools ......................................48
3.2 Periodic Maintenance Points..................48
3.3 Periodic Maintenance Check List...........49
3.4 Updating the Firmware...........................50
3.5 ADF Pressure.........................................51
3.6 Printer Unit Test .....................................52
3.7 General Circuit Diagram.........................53
3.8 FCB PC Board .......................................56
3.9 LPC PC Board........................................84
3.10 LCU PC Board .......................................93
3.11 SRU PC Board (Optional) ......................96
3.12 Low Voltage Power Supply PCB
(POW) ....................................................98
3.13 High Voltage Power Supply PCB
(HVPS).................................................100
3.14 CST2 PC Board (Optional)...................102
3.15 CST3 PC Board (Optional)...................106
3.16 PRT PC Board .....................................110
3.17 EP PC Board (Optional).......................115
3.18 G3B PCB (Optional).............................116
Troubleshooting.....................................117
4.1 Initial Troubleshooting Flowchart .........117
4.2 Improper LCD Display..........................118
4.3 Information Codes (INFO. CODES).....119
4.4 Printed Copy Quality Problems............132
4.5 Document Feeder (ADF)......................148
4.6 Communications ..................................151
4.7 Information Code Table........................157
4.8 Diagnostic Codes.................................164
Service Modes.......................................171
5.1 Service Mode (For Facsimile)..............171
System Description................................215
6.1 Mechanical Operation ..........................215
6.2 Electrical Circuit Explanation................226

Table of Contents
4
Exploded View & Parts List....................253
7.1 Destination Codes ................................253
7.2 Cover Assembly....................................254
7.3 Control Panel Unit.................................256
7.4 Transmitter Assembly...........................258
7.5 Fuser Unit .............................................261
7.6 Electrical Parts......................................263
7.7 Paper Transportation............................266
7.8 250 Feeder Unit....................................269
7.9 250 Paper Cassette..............................272
7.10 500 Feeder Unit....................................274
7.11 500 Paper Cassette..............................277
7.12 Packing.................................................279
7.13 Page Description Language Printer
Emulation Kit.........................................280
7.14 G3 Communication Port Kit
(UF-990 Only).......................................281
Installation..............................................282
8.1 Function Key.........................................282
8.2 Main Unit and Accessories ...................283
8.3 Installing the Accessories.....................284
8.4 Installing the Toner Cartridge ...............285
8.5 Loading the Recording Paper...............287
8.6 Connecting the Telephone Line Cable
and Power Cord....................................289
8.7 Customizing Your Machine...................291
Options and Supplies.............................296
9.1 Options and Supplies............................296
9.2 Installing Optional Feeder Unit
(UE-409057).........................................297
9.3 Installing Optional Feeder Unit
(UE-409056).........................................299
9.4 Installing Handset Kit (UE-403168) ......301
9.5 Installing the Memory Card (Flash
Memory Card and / or DRAM Card).....302
9.6 Page Description Language Printer
Emulation Kit (UE-403169)...................304
9.7 Installing G3 Communication Port Kit
(UE-407019).........................................310
Schematic Diagram...............................312
10.1 General Circuit Diagram.......................312
10.2 FCB PC Board (UF-890)......................317
10.3 FCB PC Board (UF-990)......................341
10.4 LCU PC Board .....................................365
10.5 SRU PC Board.....................................366
10.6 PNL PC Board......................................367
10.7 CCD PC Board (UF-890) .....................371
10.8 CCD PC Board (UF-990) .....................372
10.9 LPC PC Board......................................373
10.10 SNS PC Board .....................................377
10.11 ACI PC Board.......................................378
10.12 ILS PC Board .......................................379
10.13 SSN PC Board .....................................380
10.14 CST2 PC Board ...................................381
10.15 CST3 PC Board ...................................382
10.16 PRT PC Board .....................................383
10.17 EP PC Board........................................386
10.18 G3B PC Board .....................................394

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1 Specifications Table
1.1 Fax Function
Items Description Remarks
UF-890 UF-990
Main Specifications
1 Compatibility G3 ITU-T Std. & Non-Std. (MGCS)
2 PSTN Line Port Yes
3 Leased Line Port No
4 V.24 Line Port No
5 Modem Speed 33.6 - 2.4 kbps With Automatic Fallback
6 Coding Scheme JBIG / MMR / MR / MH
7 ECM Yes Conforms to ITU-T
8 Short Protocol Yes (B, D)
9 Transmission Speed Approx. 3 sec. ITU-T Image No. 1
(A4, Std. Resolution)
10 Communication Resolution dpi x lpi (pels / mm x lines /
mm)
Transmission
Std. 203 x 98 (8 x 3.85)
Fine 203 x 196 (8 x 7.7)
S-Fine 203 x 391 (8 x 15.4)
406 x 391 (16 x 15.4)
Reception
Std. 203 x 98 (8 x 3.85)
Fine 203 x 196 (8 x 7.7)
S-Fine 203 x 391 (8 x 15.4)
406 x 391 (16 x 15.4)
Scanner Mechanism
1 Scanning Device CCD (B4)
2 Scanning Speed Approx.
1.7 sec. Approx. 0.9 sec. Letter sized document, standard resolution
3Scanning Resolution dpi x lpi (pels / mm x lines /
mm)
Std. 203 x 98 (8 x 3.85)
Fine 203 x 196 (8 x 7.7)
S-Fine 203 x 391 (8 x 15.4)
406 x 391* (16 x 15.4*)
*Interpolated
4 Document Size (Max.) 11.0 x 78.7 in (257 x 2000 mm)
5 Document Size (Min.) 5.8 x 5.0 in (148 x 128 mm)
6 Effective Scanning Width 9.9 in (252 mm)
7 Reduction XMT Yes (B4 →A4 / Letter)
8 ADF Capacity 70 sheets *
*Documents must be inserted
by staggered feed
(stairs-shape).
Face Down
A4 / Letter 0.0024”, 12 lb (0.06
mm, 45 g/m2) to 0.0039”, 16 lb
(0.10 mm, 60 g/m2)
9 Collation Stack Yes (Face Down)