Oki OKIFAX 5750 User manual

41285901TH Rev.3 1 / 923
OKIFAX 5750/5950
Maintenance Manual
2000-04-20 Rev.2
2000-05-16 Rev.3
Oki Data Corporation

41285901TH Rev.3 2 /
1 1999-01 ISSUE E3 Sato
2 2000-04-20 Add Appendix J. E3 Sato
3 2000-05-16 Add Appendix K. E3 Endo
Document Revision History
Title: OKIFAX5750/5950 Maintenance Manual
Revision
Number Revision Date Change Author
CommentsItem

41285901TH Rev.3 3 /
PREFACE
This manual is intended to be used for installing and maintaining OKIFAX 5750/5950 facsimile
transceiver.
Maintenance of the OKIFAX 5700/5900 is assumed to be conducted at the following levels:
• Assembly-level maintenance for mechanical portions
• Unit-level maintenance for electrical at portions
CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLYREPLACED.
REPLACE ONLYWITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFAC-
TURER. DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUC-
TIONS
and
ATTENTION: IL Y A DANGER D’EXPLOSION S’IL YA REMPLACEMENT INCORRECT DE LA
BATTERIE. REMPLACER UNIQUEMENTAVEC UNE BATTERIE DU MEME TYPE OU D’UNT
TYPE RECOMMANDE PAR LE CONSTRUCTEUR. METTREAU REBUT LES BATTERIES USA
GEES CONFORMEMENTAUX INSTRUCTIONS DU FABRICANT.
Programming procedures of the following user’s functions are not described in this maintenance
manual.
Please refer to user’s guide.
• Using One-Touch Keys for Programming
• Speed Dial Numbers
• Group Dialling
• Programming Personal (Confidential) Mailboxes
• Memory Operation
© Copyright 1999 Oki Data Corporation
This manual is subject to alteration without prior notification.

41285901TH Rev.3 4 /
Contents
1. GENERAL INFORMATION...............................................................................10
1.1 General Performance........................................................................................................ 10
1.2 General User’s Functions ................................................................................................. 13
1.3 General Maintenance Functions....................................................................................... 16
1.4 General Appearance......................................................................................................... 18
1.5 Basic Performance Specifications .................................................................................... 20
1.6 Reports and Lists.............................................................................................................. 31
1.6.1 Configuration Report (List of Setting) ................................................................... 31
1.6.1.1 Difference From OKIFAX5700/5900....................................................... 32
1.6.1.2 Report Image ......................................................................................... 33
1.6.2 Function List ......................................................................................................... 36
1.6.2.1 Difference from OKIFAX5700/5900........................................................ 36
1.6.2.2 Report Image ......................................................................................... 37
1.6.3 Help Report .......................................................................................................... 40
1.6.3.1 Report Image (Conditions for descriptions)............................................ 40
1.6.4 Telephone Directory ............................................................................................. 41
1.6.4.1 Difference from OKIFAX5700/5900........................................................ 41
1.6.5 Group Directory .................................................................................................... 56
1.6.5.1 Difference from OKIFAX5700/5900........................................................ 56
1.6.6 Self Diagnosis Report........................................................................................... 61
1.6.6.1 Difference from OKIFAX5700/5900........................................................ 61
1.6.6.2 Report Image ......................................................................................... 62
1.6.7 G3 Protocol Dump ................................................................................................ 63
1.6.7.1 Difference from OKIFAX5700/5900........................................................ 63
1.6.8 G4 Protocol Dump ................................................................................................ 66
1.6.9 Relay Broadcast Confirmation.............................................................................. 69
1.6.10 Internet Fax Reception Error Report (Error Mail Report) ..................................... 75
1.6.11 Activity Report ...................................................................................................... 76
1.6.11.1 Difference from OKIFAX5700/5900........................................................ 77
1.6.12 Message Confirmation ......................................................................................... 79
1.6.12.1 Difference from OKIFAX5700/5900........................................................ 79
1.6.13 Power Outage Report........................................................................................... 82
1.6.13.1 Difference from OKIFAX5700/5900........................................................ 82
1.6.14 Confidential RX Report......................................................................................... 84
1.6.14.1 Difference from OKIFAX5700/5900........................................................ 84
1.6.15 Active Memory File ............................................................................................... 86
1.6.15.1 Difference from OKIFAX5700/5900........................................................ 87
1.6.16 Broadcast Entry Report ........................................................................................ 91
1.6.16.1 Difference from OKIFAX5700/5900........................................................ 91
1.6.17 Broadcast Confirmation Report............................................................................ 97
1.6.18 Relay Broadcast Entry Report.............................................................................. 97
1.6.19 G3 Log Report...................................................................................................... 97
1.6.20 NIC Configuration ................................................................................................. 98
1.6.21 NIC Information .................................................................................................. 101
1.6.22 E-mail Maintenance Report................................................................................ 102
1.6.23 Descriptions of Communication Mode Column .................................................. 103
1.6.23.1 Mode Column in Activity Report........................................................... 103
1.6.23.2 Mode Column in MCF-multi Report (with/without pictures).................. 103
1.6.24 Output Conditions of Various MCF Reports During Transmission ...................... 104
1.6.24.1 Difference from OKIFAX5700/5900...................................................... 104
1.6.24.2 Reports to be output when queuing for communication is
cancelled ....................................................................................... 104
1.6.24.3 Reports to be output upon canceling communication
by pressing STOP Key .................................................................. 105
1.6.24.4 Reports to be output upon the communication error end..................... 105
1.6.24.5 Reports to be output when the communication is
completed normally. ...................................................................... 106

41285901TH Rev.3 5 /
2. INSTALLATION PROCEDURE.......................................................................107
A. Setup Information..........................................................................................107
2.1 General ........................................................................................................................... 107
2.2 Site Selection.................................................................................................................. 109
2.3 Unpacking....................................................................................................................... 111
2.4 Contents Identification .................................................................................................... 113
2.5 Installation of Attachments.............................................................................................. 114
2.6 AC Cord Connection ....................................................................................................... 119
2.7 Telephone and Line Connection ..................................................................................... 120
2.8 Pcking for Shipment........................................................................................................ 120
B. Programming and Initial Settings................................................................121
2.9 Initial Settings ................................................................................................................. 121
2.9.1 General Procedure of Key Operation ................................................................. 121
2.9.2 Technical Functions: Setup................................................................................. 127
2.9.2.1 Technical Functions Operation 1 .......................................................... 128
2.9.2.2 Technical Functions Operation 2 .......................................................... 129
2.9.2.2.1 T1 (TX) Timer Value ........................................................... 137
2.9.2.2.2 T1 (RX) Timer Value........................................................... 138
2.9.2.2.3 T2 Timer *100ms ............................................................... 139
2.9.2.2.4 Error Criterion .................................................................... 140
2.9.2.2.5 Attenuator .......................................................................... 140
2.9.2.2.6 T/F Tone Att........................................................................ 141
2.9.2.2.7 MF Att. ............................................................................... 141
2.9.2.2.8 Ring Dura. *10ms............................................................... 142
2.9.2.2.9 CML Timing *100ms .......................................................... 142
2.9.2.2.10 LED Headstrobe ................................................................ 143
2.9.2.2.11 ADMIN Email Addr. ............................................................ 144
2.9.2.3 Technical Functions (Setup) ................................................................. 145
2.9.2.4 TEL/FAX automatic switching............................................................... 156
2.9.2.5 TAD mode............................................................................................. 158
2.9.2.6 Outline of Parallel Pick Up.................................................................... 160
2.9.3 User’sFunctions ................................................................................................. 162
2.9.4 Location Program ............................................................................................... 164
2.9.4.1 Select Menu is shown as below: .......................................................... 164
2.9.5 Setup .................................................................................................................. 171
2.9.5.1 Clock Adjustment ................................................................................. 173
2.9.5.2 ID/PasswordProgramming:.................................................................. 174
2.9.5.2.1 TSI/CSI .............................................................................. 176
2.9.5.2.2 TSI/CSI Option................................................................... 177
2.9.5.2.3 Sender ID........................................................................... 178
2.9.5.2.4 ISDN Tid............................................................................. 179
2.9.5.2.5 ISDN Sub No. .................................................................... 181
2.9.5.3 Machine Settings.................................................................................. 186
2.9.5.3.1 AutoAnswer Mode............................................................. 191
2.9.5.3.2 TX Mode Default ................................................................ 192
2.9.5.4 DIAL OPTIONS .................................................................................... 199
2.9.5.4.1 RedialTries ........................................................................ 202
2.9.5.4.2 Redial Interval.................................................................... 203
2.9.5.4.3 Dial Prefix........................................................................... 204
2.9.5.5 Incoming Options ................................................................................. 208
2.9.5.5.1 CNG Count ........................................................................ 211
2.9.5.5.2 Distinctive Ring .................................................................. 212
2.9.5.6 Report Options ..................................................................................... 216
2.9.5.7 LAN Options......................................................................................... 218

41285901TH Rev.3 6 /
2.9.5.7.1 POP Interval ...................................................................... 221
2.9.5.7.2 DOMAIN Name.................................................................. 222
2.9.5.7.3 Network Settings................................................................ 223
2.9.5.7.3.1 IP Address................................................... 225
2.9.5.7.3.2 Subnet Mask ............................................... 227
2.9.5.7.3.3 DefaultGateway .......................................... 228
2.9.5.7.3.4 SMTP Server Name .................................... 229
2.9.5.7.3.5 POP Server Name....................................... 230
2.9.5.7.3.6 POP User ID................................................ 231
2.9.5.7.3.7 POPPassword ............................................ 232
2.9.5.7.3.8 DNS P.SRVAddr. ........................................ 233
2.9.5.7.3.9 DNS S.SRV Addr. ........................................ 234
2.9.5.7.3.10 Host Name .................................................. 235
2.9.5.7.3.11 Fax Email Addr. ........................................... 236
2.9.6 User Default Setting 1 ........................................................................................ 242
User Default Setting 2 ........................................................................................ 243
2.9.7 Default Setting of Dial Parameters ..................................................................... 244
2.9.8 Technical Default Setting .................................................................................... 245
2.9.9 Off-line Tests....................................................................................................... 247
2.9.9.1 Self Diagnosis Flow.............................................................................. 248
2.9.9.2 Self Diagnosis Report .......................................................................... 250
2.9.9.2.1Difference from OKIFAX5700/5900...................................................... 250
2.9.10 On-lineTests....................................................................................................... 251
2.10 Installation of optional units ............................................................................................ 254
2.10.1 Optional units...................................................................................................... 254
2.10.2 Memory Board Installation Instruction ................................................................ 255
2.10.3 Network Card Installation Instruction.................................................................. 257
2.10.4 G4 Board Installation Instruction ........................................................................ 258
2.10.5 G3 Dual Line Installation Instraction................................................................... 259
2.10.6 Second Paper Cassette Unit .............................................................................. 260
3. BRIEF TECHNICAL DESCRIPTION ..............................................................263
3.1 Fundamentals of the Electro-Photographic Process ...................................................... 264
3.2 Actual Electo-photographic Process............................................................................... 266
3.3 Boards and Units ............................................................................................................ 267
3.4 Overall Dimension and Mechanical Structure of OKIFAX 5750/5950............................. 268
4. MECHANICAL DISASSEMBLY AND REASSEMBLY ...................................270
4.1 Precautions for Parts Replacement ................................................................................ 270
4.2 Tools ............................................................................................................................... 272
4.3 How to Disassemble and Reassemble ........................................................................... 272
4.3.1 Document Table Cover ....................................................................................... 275
4.3.2 Rear Cover and NCU Cover ............................................................................... 275
4.3.3 Main Cover ......................................................................................................... 276
4.3.4 Operation Unit .................................................................................................... 278
4.3.5 NCU Board ......................................................................................................... 279
4.3.6 MODEM Board ................................................................................................... 279
4.3.7 Plate Package..................................................................................................... 280
4.3.8 Scanner Unit (CIS) ............................................................................................. 281
4.3.9 Stacker Frame .................................................................................................... 282
4.3.10 Printer Unit.......................................................................................................... 282
4.3.11 Fan and Fan guard ............................................................................................. 283
4.3.12 Main Board ......................................................................................................... 284
4.3.13 ContactAssembly and High-/Low-voltage Power Supply Boards ...................... 284
4.3.14 Disassembling the Operation Unit ...................................................................... 285
4.3.14.1 Disassembling the Operation Unit........................................................ 287
4.3.15 Disassembling the Scanner Unit (L) ................................................................... 288

41285901TH Rev.3 7 /
4.3.16 Scanner (CIS)..................................................................................................... 289
4.3.17 PC1/PC2 Sensors .............................................................................................. 289
4.3.18 Speaker .............................................................................................................. 290
4.3.19 Scanner Motor .................................................................................................... 291
4.3.20 Disassembling the Printer Unit ........................................................................... 292
4.3.21 LED Head ........................................................................................................... 293
4.3.22 ID/Toner Lockout Board...................................................................................... 294
4.3.23 StackerCover ..................................................................................................... 295
4.3.24 Fusing Unit ......................................................................................................... 295
4.3.25 Manual Feed Assembly ...................................................................................... 295
4.3.26 Back-up Roller, Transfer Roller ........................................................................... 296
4.3.27 Resist Roller, Hopping Roller, Sensor Plates ..................................................... 297
4.3.28 Eject Guide Assembly ........................................................................................ 298
5. ADJUSTMENTS .............................................................................................299
5.1 Setting of LED Print Head Drive Time ............................................................................ 299
5.2.1 Confirmation Items ............................................................................................. 300
5.2.2 Measurement...................................................................................................... 301
6. CLEANING AND MAINTENANCE .................................................................302
6.1 Replacement of Consumable ......................................................................................... 302
6.2 Routine Inspection .......................................................................................................... 304
6.3 Printer Counter Display/Clear ......................................................................................... 306
6.4 Printer Counter Display/Clear ......................................................................................... 308
6.5 Self-diagnosis Test .......................................................................................................... 309
6.5.1 Self Diagnosis Report......................................................................................... 313
6.5.2 Difference from FX-056/176 ............................................................................... 313
6.6 Sensor Calibration Test ................................................................................................... 314
6.7 LEDs Test........................................................................................................................ 315
6.8 Tone Send Test ............................................................................................................... 316
6.9 High-speed Modem Send Test........................................................................................ 317
6.10 High-speed Modem Receive Test ................................................................................... 318
6.11 MF Tone Send Test ......................................................................................................... 319
6.12 Tone (TEL/FAX) .............................................................................................................. 320
6.13 ISDN Sending Test.......................................................................................................... 321
6.14 Tone Send Test G3 ......................................................................................................... 322
6.15 Modem Send Test G3 ..................................................................................................... 323
6.16 MF (Tone) Test G3 .......................................................................................................... 324
6.17 Protocol Dump Data Printing .......................................................................................... 325
6.18 System Reset ................................................................................................................. 326
6.19 Service Codes ................................................................................................................ 327
6.19.1 G3 Service Code List ......................................................................................... 328
6.19.2 G4 Service Code Lists ........................................................................................ 331
6.19.3 Internet-Fax Service Code List ........................................................................... 334
7. TROUBLESHOOTING AND REPAIR FOR OKIFAX 5750/5950 ..................336
7.1 OverallTroubleshooting Flow Chart................................................................................ 338
7.2 No LCD Operation .......................................................................................................... 339
7.3 Alarm LED On................................................................................................................. 340
7.4 Printing Test Failure ........................................................................................................ 341
7.5 No Local Copy ................................................................................................................ 342
7.6 Auto Dial Failure.............................................................................................................. 343
7.7 Transmission Problem..................................................................................................... 344
7.8 Auto Reception Failure ................................................................................................... 346
7.9 Reception Problem ......................................................................................................... 347
7.10 Sensor Calibration Test................................................................................................... 349

41285901TH Rev.3 8 /
7.11 LED Test ......................................................................................................................... 350
7.12 Tone Send Test ............................................................................................................... 351
7.13 High-speed Modem Test ................................................................................................. 352
7.14 MF Send Test.................................................................................................................. 354
7.15 Tone (TEL/FAX) Send Test.............................................................................................. 355
7.16 No Acoustic Line Monitor................................................................................................ 356
7.17 Power Supply Unit .......................................................................................................... 357
7.18 No Document Feeding.................................................................................................... 358
7.19 Multiple Document Feeding ............................................................................................ 359
7.20 Document Skew.............................................................................................................. 360
7.21 Document Jam................................................................................................................ 362
7.22 Printer Unit...................................................................................................................... 363
7.22.1 Precautions......................................................................................................... 363
7.22.2 Troubleshooting Flow Charts of Printer Unit....................................................... 364
7.23 G3 Dual Line Troubleshooting Flow Chart ...................................................................... 384
7.24 Auto Dial Failure (G3 Dual Line) ..................................................................................... 385
7.25 Transmission Problem (G3 Dual Line) ............................................................................ 386
7.26 Auto Reception Failure (G3 Dual Line) ........................................................................... 388
7.27 Reception Problem (G3 Dual Line)................................................................................. 389
7.28 High-speed Modem Test (G3 Dual Line)......................................................................... 391
7.29 MF Send Test (G3 Dual Line) ......................................................................................... 393
7.30 No Acoustic Line Monitor (G3 Dual Line) ....................................................................... 394
8 DIPSWITCHS SETTING TABLES ..................................................................395
8.1 WN5................................................................................................................................ 395
8.2 DN5................................................................................................................................. 409
8.3 FN5 ................................................................................................................................. 413

41285901TH Rev.3 9 /
Appendix A PC BOARD DESCRIPTIONS AND OPERATION.......................416
Appendix B DESCRIPTIONS OF PRINT OPERATION..................................505
Appendix C CIRCUIT DIAGRAMS AND PARTS LIST ...................................525
Appendix D MECHANICAL EXPANDED VIEW DRAWING AND PARTS LIST 688
Appendix E BOARD LAYOUT OKIFAX 5750/5950 ........................................704
Appendix F SECOND PAPER FEEDER MAINTENANCE MANUAL.............733
Appendix G PC-LOADING ..............................................................................752
Appendix H RMCS SYSTEM MANUAL (For Model 30) ................................767
Appendix I OKIFAX 5750/5950 Troubleshooting Manual ..........................772
Appendix J INTERNET FAX & NETWORK PRINT / NETWORK
SCANNER KIT MAINTENANCE GUIDE ....................................863
Appendix K

41285901TH Rev.3 10 /
1. GENERAL INFORMATION
1.1 General Performance
(1) Type of appearance
• Desktop type
(2) Applicable lines
• PSTN (Public switched telephone network
• PBX (Private branch exchange) telephone line
• ISDN (Integrated service digital network)
• FAX2NET Internet Fax (via PSTN)
• E-mail Internet Fax (via LAN)
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 •215.4 mm (NA Letter) COPY •208.6 mm (NA Letter)
•208.6 mm (ISO A4 size) •208.6 mm (ISO A4 size)*1
* Printing width will be 206 mm.
(6) Scanning length
•128 mm to 356 mm
Length setting: Long documents (1500 mm) are also available.
(7) Automatic document feeder (ADF)
•50 sheets (NA Letter/A4-size: 20-lb/75gm Oki Data recommended paper)
•30 sheets (NA Letter/A4-size: 16 to 28-lb/60 to 105gm)
(8) Recording paper
•1st cassette: NA Letter/NA Legal/A4-size plain paper cut 250 sheets capacity
(20-lb/75gm)
•2nd cassette (option): NA Letter/NA Legal/A4-size plain paper cut 500 sheets capacity
(20-lb/75gm)
•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: 211.3 mm (203.2 mm for assured quality)
•NA Legal: 211.3 mm (203.2 mm for assured quality)
•ISO A4: 206.0 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
•Face down stacking: Max. 200* sheets
•Face up stacking: Max. 10* sheets
*Note 1: Oki Data recommended paper
Note 2: Face down or face up stacking is changeable by the lever.