Oki OKIFAX4550 User manual

41309401TH Rev.4 1 / 592
OKIFAX4550/
OKIOFFICE87
Maintenance Manual
2001-05-08 Rev.4
Oki Data Corporation

41309401TH Rev.4 2 /
Rev.No. Date Corrected items Person in
Section Page Description of change charge
1 2000-03 ISSUE E3 Endo
2 2000-07-21 Change the APPENDIX D. EF Oba
3 2000-10-31 Add the OKIOFFICE87, etc. EF Saito
4 2001-05-08 Change the APPENDIX D. NP3 Oba
Document Revision History

41309401TH Rev.4 3 /
This manual is intended to be used for installing and maintaining OKIFAX4550/OKIOFFICE87
facsimile transceiver.
MaintenanceoftheOKIFAX4550/OKIOFFICE87isassumedtobeconductedatthefollowinglevels:
• Assembly-level maintenance for mechanical portions
• Unit-level maintenance for electrical at portions
CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED.
REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE
MANUFACTURER. DISCARDUSEDBATTERIESACCORDINGTOTHEMANUFACTURER'S
INSTRUCTIONS
and
ATTENTION: ILYADANGERD'EXPLOSIONS'ILYAREMPLACEMENTINCORRECTDE
LA BATTERIE. REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MEME TYPE OU
D'UNT TYPE RECOMMANDE PAR LE CONSTRUCTEUR. METTRE AU REBUT LES
BATTERIES USA GEES CONFORMEMENT AUX INSTRUCTIONS DU FABRICANT.
Programming procedures of the following user's functions are not described in this maintenance
manual.
Please refer to user's guide.
• One-touch key programming
• Two-digit auto dial programming
• Group setting
• Programming mail box password
• Memory operation
ODA/OEL, INT'L MODEL NAME
• OKIFAX4550
• OKIOFFICE87
© Copyright 2000 Oki Data Corporation
This manual is subject to alteration without prior notification.
PREFACE

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CONTENTS
1. GENERAL INFORMATION ................................................................................. 8
1.1 General Performance...........................................................................................................8
1.2 General User's Functions ....................................................................................................11
1.3 General Maintenance Functions ..........................................................................................14
1.4 General Appearance............................................................................................................15
1.5 Basic Performance Specifications .......................................................................................17
1.6 Reports and Lists .................................................................................................................27
2. INSTALLATION PROCEDURE .......................................................................... 57
2.1 Setup Information.................................................................................................................57
2.1.1 General ...................................................................................................................57
2.1.2 Site Selection ..........................................................................................................59
2.1.3 Unpacking ...............................................................................................................61
2.1.4 Identification Contents ............................................................................................63
2.1.5 Installation of Attachments......................................................................................64
2.1.6 AC Cord Connection ...............................................................................................69
2.1.7 Telephone and Line Connections ...........................................................................70
2.1.8 Packing for Shipment..............................................................................................70
2.2 Programming and Initial Settings .........................................................................................71
2.2.1 Initial Settings..........................................................................................................71
2.2.1.1 General Procedure of Key Operation.....................................................71
2.2.1.2 Technical Functions................................................................................75
2.2.1.3 Technical Functions Example.................................................................90
2.2.1.4 User’s Functions ....................................................................................99
2.2.1.5 User's Functions Example......................................................................122
2.2.1.6 Clock Adjustment ...................................................................................131
2.2.1.7 Dual Access Operation...........................................................................132
2.2.1.8 System Data Programming ....................................................................133
2.2.1.9 Dial Parameters Settings .......................................................................135
2.2.1.10 Off-line Tests ..........................................................................................139
2.2.1.11 On-line Tests ..........................................................................................141
3. BRIEF TECHNICAL DESCRIPTION ................................................................... 144
3.1 Fundamentals of the Electro-Photographic Process............................................................145
3.2 Actual Electo-photographic Process ....................................................................................147
3.3 Boards and Units .................................................................................................................148
3.3.1 Boards and Units ....................................................................................................148
3.4 Overall Dimension and Mechanical Structure of OKIFAX4550/OKIOFFICE87 ...................150
4. MECHANICAL DISASSEMBLY AND REASSEMBLY......................................... 151
4.1 Precautions for Parts Replacement .....................................................................................151
4.2 Tools ....................................................................................................................................153
4.3 How to Disassemble and Reassemble ................................................................................153
4.3.1 LED Print Head .......................................................................................................157
4.3.2 ID Unit, Rear-Cover, Cover-Main, Board-NCU or Board-G4N................................158
4.3.3 Unit-046 OPE-Panel ...............................................................................................160
4.3.4 Separation Rubber, Roller Assembly Sensor .........................................................161
4.3.5 Roller Assembly-ADF, CIS (contact image sensor), Lever-PC1 and PC2..............162
4.3.6 Board-46F, Board-R46 Power Supply Unit, Board HV-P6L....................................165
4.3.7 Printer Unit Section .................................................................................................166
4.3.8 Transfer Roller ........................................................................................................167
4.3.9 High-Voltage Power Supply Unit (HV-P2H) ............................................................168
4.3.10 Holder Assembly.....................................................................................................169
4.3.11 Plate-Side M and Gear-Idle ....................................................................................170
4.3.12 Registration Roller ..................................................................................................171
4.3.13 Drive Shaft E (Eject) and Eject Roller .....................................................................172
4.3.14 Heat Assembly........................................................................................................173
4.3.15 Pressure Roller B (Back Up Roller) ........................................................................174

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4.3.16 Hopping Shaft Assembly.........................................................................................175
4.3.17 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assembly .........................176
4.3.18 Printer Unit ..............................................................................................................177
5. ADJUSTMENTS .................................................................................................. 178
5.1 Setting of LED Print Head Drive Time .................................................................................178
5.2.1 Confirmation Items..................................................................................................179
5.2.2 Measurement ..........................................................................................................180
6. CLEANING AND MAINTENANCE ...................................................................... 182
6.1 Replacement of Consumable...............................................................................................182
6.2 Routine Inspection ...............................................................................................................184
6.3 Printer Counter Display/Clear ..............................................................................................186
6.4 Printer Counter Display/Clear ..............................................................................................188
6.5 Local Test ............................................................................................................................189
6.5.1 When G4 option board is not installed. ................................................................... 189
6.5.2 When G4 option baord is installed. ......................................................................... 190
6.6 Self-diagnosis Test ..............................................................................................................191
6.6.1 Self Diagnosis Report .............................................................................................192
6.7 Sensor Calibration Test .......................................................................................................194
6.8 LEDs Test ............................................................................................................................196
6.9 Tone Send Test ...................................................................................................................197
6.10 High-speed Modem Send Test ............................................................................................198
6.11 High-speed Modem Receive Test........................................................................................200
6.12 MF Send Test ......................................................................................................................201
6.13 Tone (TEL/FAX)...................................................................................................................202
6.14 Protocol Dump Data Printing ...............................................................................................203
6.14.1 G3 Protocol Dump ..................................................................................................204
6.14.2 Analysis from the data ............................................................................................207
6.14.3 FCF (Facsimile Control Field) conversion table......................................................208
6.14.4 G4 Protocol Dump ..................................................................................................209
6.15 System Reset.......................................................................................................................212
6.16 Service Codes......................................................................................................................213
6.16.1 G3 Service Code List ..............................................................................................214
6.16.2 G4 Service Code Lists ............................................................................................217
7. TROUBLESHOOTING AND REPAIR FOR OKIFAX4550/OKIOFFICE87 .......... 220
7.1 Overall Troubleshooting Flow Chart ....................................................................................222
7.2 No LCD Operation ...............................................................................................................223
7.3 Alarm LED On......................................................................................................................224
7.4 Printing Test Failure.............................................................................................................225
7.5 No Local Copy .....................................................................................................................226
7.6 Auto Dial Failure ..................................................................................................................227
7.7 Transmission Problem .........................................................................................................228
7.8 Auto Reception Failure ........................................................................................................229
7.9 Reception Problem ..............................................................................................................230
7.10 Sensor Calibration Test .......................................................................................................231
7.11 LED Test ..............................................................................................................................232
7.12 Tone Send Test ...................................................................................................................233
7.13 High-speed Modem Test......................................................................................................234
7.14 MF Send Test ......................................................................................................................236
7.15 Tone (TEL/FAX) Send Test .................................................................................................237
7.16 No Acoustic Line Monitor .....................................................................................................238
7.17 Power Supply Unit ...............................................................................................................239
7.18 No Document Feeding .........................................................................................................239
7.19 Multiple Document Feeding .................................................................................................240
7.20 Document Skew...................................................................................................................241
7.21 Document Jam.....................................................................................................................243
7.22 Printer Unit ...........................................................................................................................244
7.22.1 Precautions .............................................................................................................244
7.22.2 Troubleshooting Flow Charts of Printer Unit ...........................................................245

41309401TH Rev.4 6 /
8. DIPSWITCHS SETTING TABLES FOR EN9/INU NCU BOARDS...................... 261
APPENDIX A PC BOARD DESCRIPTIONS AND OPERATION ........................... 271
1. Unit Configuration and Block Diagram.....................................................................................271
1.1 The unit configuration is as follows:...............................................................................274
1.2 Function of Each Unit ....................................................................................................275
2. Explanation of Signal Flow ......................................................................................................278
2.1 OKIFAX4550 .................................................................................................................278
2.2 OKIOFFICE87 ...............................................................................................................294
3. 46F Circuit Diagram (OKIFAX4550) ........................................................................................310
3.1 46F Circuit Diagram (1/13) ............................................................................................310
3.2 46F Circuit Diagram (2/13) ............................................................................................311
3.3 46F Circuit Diagram (3/13) ............................................................................................312
3.4 46F Circuit Diagram (4/13) ............................................................................................313
3.5 46F Circuit Diagram (5/13) ............................................................................................315
3.6 46F Circuit Diagram (6/13) ............................................................................................316
3.7 46F Circuit Diagram (7/13) ............................................................................................318
3.8 46F Circuit Diagram (8/13) ............................................................................................321
3.9 46F Circuit Diagram (9/13) ............................................................................................322
3.10 46F Circuit Diagram (10/13) ..........................................................................................324
3.11 46F Circuit Diagram (11/13) ..........................................................................................325
3.12 46F Circuit Diagram (12/13) ..........................................................................................329
3.13 46F Circuit Diagram (13/13) ..........................................................................................330
4. R46 Circuit Diagram (OKIOFFICE87)......................................................................................331
4.1 R46 Circuit Diagram (1/15, 2/15, 3/15)..........................................................................331
4.2 R46 Circuit Diagram (4/15)............................................................................................ 332
4.3 R46 Circuit Diagram (5/15)............................................................................................ 333
4.4 R46 Circuit Diagram (6/15)............................................................................................ 334
4.5 R46 Circuit Diagram (7/15)............................................................................................ 335
4.6 R46 Circuit Diagram (8/15, 9/15)................................................................................... 337
4.7 R46 Circuit Diagram (10/15)..........................................................................................340
4.8 R46 Circuit Diagram (11/15)..........................................................................................341
4.9 R46 Circuit Diagram (12/15)..........................................................................................343
4.10 R46 Circuit Diagram (13/15) ..........................................................................................344
4.11 R46 Circuit Diagram (14/15) ..........................................................................................348
4.12 R46 Circuit Diagram (15/15) ..........................................................................................349
5. OPE (04W) Circuit Diagram.....................................................................................................350
6. Power Supply Unit ...................................................................................................................351
6.1 MPW1446 (230V)/MPW1546 (120V) Circuit Diagram................................................... 351
7. P2H Circuit Diagram ................................................................................................................353
7.1 High-voltage section ......................................................................................................... 354
7.2 Photosensors.................................................................................................................355
7.3 Cover open circuit..........................................................................................................355
8. EN9 and INU Circuit Diagram ..................................................................................................356
8.1 EN9 circuit diagram .......................................................................................................358
8.2 INU circuit diagram ........................................................................................................361
8.3 Outline of Parallel Pick Up.............................................................................................364
9. G4N-PCB.................................................................................................................................365
APPENDIX B DESCRIPTIONS OF PRINT OPERATION...................................... 367
1. Electro-Photographic Processor ..............................................................................................367
2. Electro-Photographic Process .................................................................................................369
2.1 Explanation of Each Process Operation........................................................................ 372
3. Paper Jam Detection ...............................................................................................................378
4. Toner Low Detection................................................................................................................380
5. Cover Open..............................................................................................................................381
APPENDIX C CIRCUIT DIAGRAMS...................................................................... 382
APPENDIX D MECHANICAL EXPANDED VIEW DRAWING AND PARTS LIST . 427

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APPENDIX E BOARD LAYOUT AND PARTS LIST .............................................. 456
APPENDIX F PC-LOADING .................................................................................. 516
1. General ....................................................................................................................................516
1.1 Application .....................................................................................................................516
1.2 General..........................................................................................................................516
1.3 Note on Explanation ......................................................................................................516
1.4 Related Document......................................................................................................... 516
2. Basic Operation .......................................................................................................................517
2.1 Supported Functions .....................................................................................................517
2.2 Differences from HSLS.................................................................................................. 517
3. PC Loading Procedure ............................................................................................................518
3.1 PC Loading upon Memory Error Occurrence ................................................................518
3.2 PC Loading by Manual Operation .................................................................................519
4. LCD Messages ........................................................................................................................521
5. Buzzer Sounding Patterns .......................................................................................................522
5.1 Upon Start of PC Loading..............................................................................................522
5.2 Upon Normal End ..........................................................................................................522
5.3 Upon Error Occurrence .................................................................................................522
6. List of Error Causes and Corresponding Codes ......................................................................523
7. Cautions...................................................................................................................................524
8. Loading Processing Time ........................................................................................................524
APPENDIX G RMCS SYSTEM MANUAL (FOR MODEL 40) ................................ 525
1. Notes to RMCS user ................................................................................................................525
1.1 Introduction....................................................................................................................525
1.2. System Configuration of RMCS MODEL40 ................................................................... 525
1.3 Required System ...........................................................................................................525
2. Quick Set-up manual for RMCS Model 40...............................................................................526
2.1 RMCS Installation..........................................................................................................526
3. Startup .....................................................................................................................................526
3.1 Entering Operator ID .....................................................................................................526
3.2 Entering Password ........................................................................................................526
4. SYSTEM Main Screen .............................................................................................................527
4.1 Screen Titles..................................................................................................................527
4.2 DISK by Models.............................................................................................................528
4.3 Manipulating User Information.......................................................................................528
5. Model Main Screen ..................................................................................................................530
5.1 Screen Title ...................................................................................................................530
5.2 ONLINE Operation ........................................................................................................530
APPENDIX H OKIFAX4550/OKIOFFICE87 TROUBLESHOOTING MANUAL...... 533
1. General ....................................................................................................................................533
2. Tools ........................................................................................................................................533
3. Contents...................................................................................................................................533
3.1 46F Board (OKIFAX4550) .............................................................................................533
3.2 R46 Board (OKIOFFICE87)...........................................................................................534
3.3 O4W Board....................................................................................................................534
3.4 G4N Board.....................................................................................................................534
4. Description ...............................................................................................................................535
4.1 46F Board (OKIFAX4550) .............................................................................................535
4.2 R46 Board (OKIOFFICE87)...........................................................................................547
4.3 04W Board.....................................................................................................................559
4.4 G4N Board.....................................................................................................................561

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1. GENERAL INFORMATION
1.1 General Performance
(1) Type of appearance
• Desktop type
(2) Applicable lines
• Public switched telephone network (PSTN)
• Private branch exchange (PBX)
• ISDN (Integred service digital network)
• Fax2Net Internet Fax (via PSTN)
Note: ISDN and Internet Fax are option
(3) Compatibility
• ITU-T Group 3 facsimile transceiver
• ITU-T Group 4 facsimile transceiver (option)
(4) Document width
• Max. 216 mm (NA Letter)
• Min. 148 mm (ISO A5 size)
(5) Effective reading width
TX
• Max. 215 mm (NA Letter)
• Max. 208 mm (ISO A4 size)
COPY
• 203.2 mm (NA Letter)
• 203.2 mm (ISO A4 size)
(6) Scanning length
• 128 mm to 356 mm
(Length setting: Unlimited (1500mm) is also available.)
(7) Automatic document feeder (ADF)
• 20 sheets (NA Letter/A4-size: 20-1b bond/75 gm. Oki Data recommended paper)
• 15 sheets (NA Letter/A4-size: 16 to 28-1b bond/60-105 gm)
Note: NA is North America
(8) Recording paper or sheet
• 1st tray: NA Letter/NA Legal/A4-size plain paper cut
100 sheets capacity (20-1b bond*)
• Manual paper feeder: Transparency for overhead projector, applicable.
Sheet size: NA Letter/NA Legal/A4-size
*: Oki Data recommended paper
(9) Printable width
• NA Letter: 203.2 mm (203.2 mm for assured quality)
• NA Legal: 203.2 mm (203.2 mm for assured quality)
• ISO A4: 203.2 mm (197.3 mm for assured quality)
(10) Printable length
• NA Letter: 273.4 mm (266.7 mm for assured quality)
• NA Legal: 349.6 mm (342.9 mm for assured quality)
• ISO A4: 291.0 mm (284.3 mm for assured quality)
(11) Copy stacker
• Max. 30 sheets (Faceup stacking)
*: Oki Data recommended paper

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(12) Scanning resolution
a) Horizontal:
• 300 dot/inch
Note 1: In the local COPY mode at standard (STD) resolutions, the dpi conversion
is done from 300 dot/inch to 200 dot/inch.
2: 600 dpi ×15.4 line/mm: Copy is available for OKIOFFICE87.
b) Vertical:
Transmission mode: 3.85 line/mm (STD), 7.7 line/mm (FINE), 15.4 line/mm (EX.FINE)
or 300 dot/inch (EX.FINE)
COPY mode: 3.85 line/mm (STD), 7.7 line/mm (FINE) or 15.4 line/mm (EX.FINE)
Note: 300 dpi ×300 dpi: Transmission is available.
(13) Scanning method
• 2592 bits contact image sensor
(14) Recording resolution
a) Horizontal:
• 300 dot/inch
• 600 dot/inch for OKIOFFICE87
b) Vertical:
Variable: Automatically adjusted to the paper length.
(784 to 1076 dot/inch), (300 to 395 dot/inch), STD mode (3.85 to 5.06
line/mm) and FINE mode (7.7 to 10.13 line/mm) and EX-FINE mode
(15.4 to 20.24 line/mm)
Fixed: STD mode: 3.85 line/mm
FINE mode: 7.7 line/mm
EX-FINE mode: 15.4 line/mm
300 dot/inch
(15) Recording method
• 211.3 mm (2496 bits) and/or 216.7 mm (2560 bits) LED print head
(16) Minimum scan line time for reception
• When receiving from OKIFAX or ECM: 0 ms
• When receiving from non- OKIFAX and non ECM: 10 ms at 3.85 line/mm
5 ms at 7.7 line/mm, 15.4 line/mm
(17) Print speed
• Max. 8 sheets per minute (at NA letter size)
(18) Pre-heating time
• Approx. 30 sec. (Standby to Print)
Note: This feature is not available OKIFAX4550/OKIOFFICE87 for ODA version.
(19) Coding scheme
• Modified Huffman (MH)
• Modified READ (MR)
• Modified Modified READ (MMR)

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(20) Modem
• ITU-T Rec. V.29: 9600 bps for use on point-to-point 4-wire leased telephone
type curcuits.
• ITU-T Rec. V.27 ter: 4800 bps modem for use in PSTN (Public Switched
Telephone Network)
• ITU-T Rec. V.21 channel 2: 300 bps duplex modem for PSTN
• ITU-T Rec. V.17: 2-wire modem for fax applications up to 14.4 kbps
• ITU-T Rec. V.34: A modem operating at data signalling rates of up to 33.6
Kbps for use on the general switched telephone network and
on leased point-to-point 2-wire telephone-type circuits.
• ITU-T Rec. V.33: 14400 bps for use on point-to-point 4-wire leased telephone
type circuits.
(21) Transmission speed
• 3 sec. (approx 3.2 sec) per sheet of ITU-T No. 1 evalution test chart
Note: This is Phase C time at 3.85 line/mm and 33600 bps for 3 sec. in MMR code
transmission.
(22) Protocol
• ITU-T Rec. T.30
• ITU-T Rec. G4 class 1 (option)
• OKI special protocols: High-speed protocol (G3)
(23) Error correction scheme
• ITU-T ECM
(24) Communication mode
• Half duplex
(25) Image memory
• Basic model: 2M byte
(26) Liquid crystal display (LCD)
• Two rows of 20 characters for operation guidance, check and various kinds of information
(27) Power source
• Nominal input voltage 120 VAC for ODA version
• Nominal input voltage 230 VAC for INT’L version
(28) MFP (Multi- Function Peripheral) functions:
PC Printer Function
PC Scanner Function
PC Fax Modem Function
Location Programing Function
Note: For details, see “Product Specification for MFP”
This function is standard for OKIOFFICE87.
(29) FAX2NET functions:
• FAX over IP Function
• FAX to E-mail Function
• Virtual E-mail Function
• Broadcast function
• Web Retrieval Function
• Prepaid Card Registration (Note 2)
Note1: For details, see Appendix I “FAX2NET Function”.
2: May not used according to dealer's conditions.