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.

41285901TH Rev.3 11 /
(12) Scanning resolution
a) Horizontal:
•300 dot per inch
Note: 600 dpi x 15.4 mm (600 dpi x 600 dpi)*; copy is available.
* In case 8 MB option memory is installed.
b) Vertical:
•300 dot per inch, 15.4, 7.7, and 3.85 lines per mm
Note: 300 dpi x 300 dpi (600 dpi x 600 dpi)*; Transmission is available.
* In case 8 MB option memory is installed.
(13) Scanning method
•2592 bits contact image sensor
(14) Recording resolution
a) Horizontal:
•600 dot per inch
b) Vertical:
•Variable:
STD
Fine
Ex-Fine (15.4 line/mm)
Ex-Fine (300 dot/inch)
Ex-Fine (600 dot/inch)
3.85 ~ 4.96
7.7 ~ 9.93
15.4 ~ 19.87
300 ~ 387
600 ~ 774
3.85 ~ 5.28
7.7 ~ 10.57
15.4 ~ 21.15
300 ~ 412
600 ~ 824
A4 Letter
•Fixed EX-FINE mode : 600 dot/inch, 300 dot/inch, 15.4 line/mm
FINE mode : 7.7 line/mm
STD mode : 3.85 line/mm
PC-Print : 600 dot/inch, 300 dot/inch
(15) Printing method
Electro photographic printing
•211.3 mm (4992 bits) LED print head
(16) Minumum 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. 10 sheets per minute (at NA letter size)
(18) Coding scheme
•Modified Huffman (MH)
•Modified Read (MR)
•Modified Modified Read (MMR)
•JBIG (only for OKIFAX 5950)
(19) Modem
•ITU-T Rec. V.29: 9600bps for use on point-to-point 4-wire leased telephone type circuit.
•ITU-T Rec. V.27 ter: 4800bps modem for use in GSTN (General Switched Telephone
Network)
•ITU-T Rec. V.21 channel 2: 300 bps duplex modem for GSTN
•ITU-T Rec. V.17: 2-wire modem for fax applications up to 14.4kbps
•ITU-T Rec. V.34

41285901TH Rev.3 12 /
(20) Transmissionspeed
•2.5 sec. per sheet of ITU-T No.1 evalution test chart (for OKIFAX 5950)
•3.0 sec. per sheet of ITU-T No.1 evalution test chart (for OKIFAX 5750)
Note: This is Phase C at 3.85 line/mm and 33.6 kbps.
(21) Protocol
•ITU-T Rec. T.30
•ITU-T Rec. G4 Class 1 (option)
•OKI special protocols: High speed protocol (G3)
(22) Error correction scheme
•ITU-T ECM
(23) Image memory
•Basic model: 2.5 M-byte (OKIFAX 5750)
4.5 M-byte (OKIFAX 5950)
•Optional memory: 2.0/4.0/8.0 M-byte
(24) Liquid crystal display (LCD)
•Four lines of 20 characters for operation guidance, check and various kinds of informa-
tion
(25) Power source
•Normal input voltage 120 VAC for ODA version
•Normal input voltage 230 VAC for INT’L version
(26) MFP (Multi-Function Peripheral) PC Interface Kit
PC Printer function
PC Scanner function
PC Fax Modem function
Note: For details, see “Product Specification for MFP PC Interface Kit”
Hardware is standard and software is option for Bi-Centro interface.
(27) ISDN G4 Board function (option)
•G4 function
•ISDN G4: Communication
•ISDN G3: Communication
•ISDN: Report and List
Dual Mode Communication (option)
Note: For details, see “Product Specification for ISDN G4 Board (including Dual Mode
Communication)”
(28) Network print kit (option)
•Netware 3.1x, 4.1x
•TCP/IP
•Windows NT/95/98/3.1
•T600dpi, 10ppm
Note: For details, see “Product Specification for Network Print Kit”
(29) Internet FAX Kit: E-mail type (option)
•I-Fax Sending
•I-FAX Receiving
•Gateway Service 1
•Gateway Service 2
•I-Fax Service
Note: For details, see”Product Specification for Internet FAX Kit”.

41285901TH Rev.3 13 /
(30) FAX2NET: Provider type (option)
•Fax over IP
•Fax to E-mail
•Virtual E-mail
•Web Retrieval
Note: For details, see”Product Specification for FAX2NET Specification”.
(31) G3 Dual Line Function (option)
Note: For details, see”Product Specification for G3 Dual Line Function”.
(32) 600dpi Communication (option)
Note: For details, see”Product Specification for 600dpi Communication”.
(33) Relay Broadcast
Note: For details, see”Product Specification for Relay Broadcast”.
1.2 General User’s Functions
1) Transmission
(1) Transmit mode
•Automatic transmit mode
•Manual transmit mode
(2) Instant Dialling
(3) Delayed feeder transmission
(4) Memory transmission
•40 sessions
(5) Delayed memory transmission (within 3 days)
•20 specified times for OKIFAX 5750
•30 specified times for OKIFAX 5950
(6) Sequential broadcast (Memory)
•150 stations for OKIFAX 5750
•240 stations for OKIFAX 5950
(7) Delayed broadcast
•20 specified times for OKIFAX 5750
•30 specified times for OKIFAX 5950
(8) Confidential message transmission
•Feeder Confidential TX
•Memory Confidential TX
(9) Relay broadcast initiate
•Feeder Relay broadcast initiate
•Memory Relay broadcast initiate
(10) Polling transmission
•Feeder Polling TX
•Memory Polling TX
(11) Bulletin Poll transmission (When Box number is opened.)
•16 boxes

41285901TH Rev.3 14 /
(12) Batch transmission
(13) Priority transmission
(14) Transmission preparation (Feeder)
2) Reception
(1) Receive mode
•Automatic receive mode
•Manual receive mode
•TEL/FAX receive mode
•TAD mode
•Memory receive mode
•PC receive mode
•Forwarding mode
(2) Memory only reception
(3) No toner/No paper reception (memory)
(4) Confidential message reception
•16 mail boxes
(5) Fax forwarding for incoming call
(6) Fax forwarding for no toner/no paper reception
(7) Polling reception
3) Convenience
(1) Dual access
(2) Automatic redial
(3) Last number redial (Manual redial)
(4) Local copy of a document, including multiple copies
•99 copies max.
(5) Sender identification (Sender ID)
(6) Personal identification (Personal ID)
(7) TSI/CSI: Local telephone number
(8) Acoustic monitor (only TX mode)
•5 level selectable
(9) Automatic alternate selecting call
(FAX No. + FAX No. can be registerd in one-touch keys).
•OKIFAX 5750: Speed Dial (1 to 40) are assigned to one-touch keys.
•OKIFAX 5950: Speed Dial (1 to 80) are assigned to one-touch keys.
(10) Half-tone transmission (at FINE resolution)
•64 scale gradations
(11) Page re-transmission (Only when memory TX mode)

41285901TH Rev.3 15 /
(12) Distinguishing text from pictures
(13) Vertical reduction printing (Reduction rate is from 100% to xx%)
Note: xx is Letter 72.8%, A4 77.5%
(14) Smoothing printing
In case of 8 dot/mm x 3.85 lines/mm →300 dot/inch x 784 lines/inch
(15) Auto dialing
•Speed dialing:
OKIFAX 5750; 1 to 140 (1 to 40 are assigned to one-touch keys.)
OKIFAX 5950; 1 to 230 (1 to 80 are assigned to one-touch keys.)
•Group dialing; 20 groups
•Keypad dialing
•Chain dialing
•Mixed dialing
(16) Real-time dialing
Dialing with off hook condition or when the HOOK key is pressed.
(17) Automatic pause signal insertion
(18) Local copy
(19) Telephone directory (Alpha/Location) dialing
(20) TEL/FAX automatic switching
(21) TAD mode (for external telephone answering device)
(22) Session number
(23) Time and date printing
(23) Closed user group (Direct mail rejection)
(24) Contrast and resolution control
(25) Key touch tone
(26) Printer counter display (For drum, toner, print, and scan)
(27) Quick scanning
(28) Time and date setting
(29) Language selection
•2 languages (LCD and Report)
(30) Distinctive ring detect
(31) Restricted access
(32) Beep sound
4) Reports
(1) Function list
(2) Configuration

41285901TH Rev.3 16 /
(3) Phone directory
(4) Group directory
(5) Activity report
(6) Active memory files
(7) Broadcast MCF (Message Confirmation)
(8) Protocol dump (G3 and G4)
(9) NIC configuration
(10) Log. report (Service bit = ON)
(11) G4 Log. report (Service bit = ON)
(12) G3 Log. report (Service bit = ON)
(13) Self diagnosis report
5) Report options
(1) MCF. (Single-Loc.)
(2) MCF. (Multi-Loc.)
(3) Image in MCF.
(4) Error report (MCF.)
1.3 General Maintenance Functions
1) Local tests
(1) Self-diagnosis
Main board
•CPU ROM/RAM check
•Flash memory check (Program, Language, and Default)
•Modem version
•RAM check
•Toner cartridge
•Option memory check
•DEVICE ID
LAN Board check (option)
ISDN board (option)
•CPU ROM/RAM check
(2) Sensor calibration (Adjustment of scanning level)
(3) LED test
(4) Tone send test (When NCU board is installed.)
(5) High-speed modem send test (When NCU board is installed.)
(6) High-speed modem receive test (When NCU board is installed.)

41285901TH Rev.3 17 /
(7) MF tone test (When NCU board is installed.)
(8) Tone (TEL/FAX) test (When NCU board is installed.)
(9) Loop back 1 (When ISDN option board is installed.)
(10) Loop back 2 (When ISDN option board is installed.)
(11) INFO0 sending (When ISDN option board is installed.)
(12) INFO1 sending (When ISDN option board is installed.)
(13) INFO2 sending (When ISDN option board is installed.)
(14) INFO3 sending (When ISDN option board is installed.)
(15) Pulse (1kHz) send (When ISDN option board is installed.)
(16) Pulse (2kHz) send (When ISDN option board is installed.)
(17) Pulse (N2kHz) send (When ISDN option board is installed.)
(18) Tone send test G3
(19) Modem send test G3
(20) MF (tone) test G3
2) Technical setup
3) System reset
•All data clear
•Location data clear
•Configuration data clear
4) Default type set
5) PC loading
6) G4 PC loading
7) G3 PC loading

41285901TH Rev.3 18 /
352 mm
472 mm
360 mm
Stacker-Document
Operation Panel
Tray-Paper
Tray-Document
Figure 1.4.1 General Appearance of OKIFAX 5750/5950
1.4 General Appearance
Figure 1.4.1 shows the general appearance of the OKIFAX 5750/5950.

41285901TH Rev.3 19 /
Figure 1.4.2 Control Panel of OKIFAX 5750/5950
12345678910
11 12 13 14 15 16 17 18 19 20
QWERT YUI OP
ASDFGHJKL
ZXCVBNM, ;
DEL
CAPS
@-:/
SPACE
.\+
PAUSE
UNIQUE
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
123
456
789
*0#
ABC DEF
JKL MNOGHI
TUV WXYZPQRS
UNIQUE
HYPHEN
REDIAL
STOP
START
COPY
HOOK
PHOTO EXFINE FINE STD
LIGHTNORMALDARK
HELP
MENU/EXIT
CLEAR
TYPE OF ORIGINAL
RESOLUTION
ALARM
SHIFTUP
SHIFTDOWN
SHIFT
RIGHT
SHIFT
LEFT
SPEEDDIAL
SERCH
ENTER
OKIFAX
5950
8.5" A4 B5 A5

41285901TH Rev.3 20 /
No. Item Specifications
1 Applicable line
2 Line interface
1) Impedance
2) Sending power level
3) Receiving power level
3 Type of document to be transmit-
ted
1) Width
2) Length
3) Thickness
4) Shape
5) Opacity
4 Effective reading width
1) PSTN (Public switched telephone network)
2) PBX (Private branch exchange )
3) ISDN (Integrated services digital network): Option
4) FAX2NET Internet Fax (via PSTN): Option
5) E-mail Internet Fax (via LAN): Option
600 ohm balanced
Note: Impedance may differ by the requirement of PTT
0 dBm to -15 dBm range
(Adjustable in 1 dB steps: Technical Setup No.21)
0 dBm to -43 dBm
(In case of V.34 TX/RX, -3 ~ -36 dBm)
Max. 216 mm (NA Letter)
Min. 148 mm (ISO A5)
Note: Effective reading width is NA Letter (215.4 mm)
Min. 128 mm (5 inch)
Max. 356 mm (14 inch)
Long document detection: 380 mm or 1500 mm
(Technical Setup No. 10: To enables or disables the
long document scanning.)
Based on common bond paper,
1) 0.08 to 0.13 mm for multiple page feeding
2) 0.06 to 0.15 mm for single page feeding
Rectangular
Document allowing less than 40% of the scanner
source light to pass through them.
Note (*1): Printing width will be 206 mm.
Document Width
NA Letter (216 mm)
US/CANADA
ISO A4 (210 mm)
INT’L
Communication
mode/paper width Effective reading width
Copy size
G3/A4
G3/A4
Letter
A4
215.4 mm for TX
208.6 mm for local copy
208.6 mm for TX
208.6 mm for local copy(*1)
1.5 Basic Performance Specifications
Table 1.5.1 shows basic performance specifications:
Table 1.5.1 Basic Performance Specifications