Oki OKIFAX 5750 User manual

OKIFAX 5750 // 5950
Facsimile Machine
SERVICE
MANUAL

Table of Contents Page
Service Guide OKIFAX 5750/5950
0 Introduction
Copyright 2
1 General Information
1.1 General Performance 3
1.2 General User's Function 4
1.3 General Maintenance Functions 5
1.4 General Appearance 6
....1.4.1 General Appearance of OKIFAX 5750/5950 7
....1.4.2 Control Panel 9
1.5 Basic Performance Specifications 10
....Table 1.5.1 (1/8) Basic Performance Specifications 11
....Table 1.5.1 (2/8) Basic Performance Specifications 12
....Table 1.5.1 (3/8) Basic Performance Specifications 13
....Table 1.5.1 (4/8) Basic Performance Specifications 14
....Table 1.5.1 (5/8) Basic Performance Specifications 15
....Table 1.5.1 (6/8) Basic Performance Specifications 16
....Table 1.5.1 (7/8) Basic Performance Specifications 17
....Table 1.5.1 (8/8) Basic Performance Specifications 18
1.6 Reports and Lists 19
....1.6.1 Configuration Report (List of Setting) 21
........1.6.1.1 Difference From OKIFAX 5700/5900 21
........1.6.1.2 Report Image 21
....1.6.2 Function List 21
........1.6.2.1 Difference from OKIFAX 5750/5950 21
........1.6.2.2 Report Image 21
....1.6.3 Help Report 21
........1.6.3.1 Report Image (Conditions for Description) 21
....1.6.4 Telephone Directory 21
........1.6.4.1 Difference from OKIFAX 5700/5900 21
........Telephone Directory P1 for OF5750 21
........Telephone Directory P2 for OF5750 21
........Telephone Directory P3 for OF5750 21
........Telephone Directory P4 for OF5750 21
........Telephone Directory P5 for OF5750 21
........Telephone Directory P1 for OF5950 21

Table of Contents Page
........Telephone Directory P2 for OF5950 21
........Telephone Directory P3 for OF5950 21
........Telephone Directory P4 for OF5950 21
........Telephone Directory P5 for OF5950 21
........Telephone Directory P6 for OF5950 21
........Telephone Directory P6 for OF5950 21
........Telephone Directory P7 for OF5950 21
........Telephone Directory P8 for OF5950 21
........Telephone Directory 21
....1.6.5 Group Directory 21
........1.6.5.1 Difference from OKIFAX5700/5900 21
........Group Directory for OKIFAX5750 21
........Group Directory P1 for OKIFAX5950 21
........Group Directory P2 for OKIFAX5950 21
........Group Directory 21
....1.6.6 Self Diagnosis Report 21
........1.6.6.1 Difference from OKIFAX5700/OF5900 21
........1.6.6.2 Report Image 21
....1.6.7 G3 Protocol Dump 21
........1.6.7.1 Difference from OKIFAX5700/OF5900 21
........Protocol Dump P1 21
........Protocol Dump P2 21
....1.6.8 G4 Protocol Dump 21
........Protocol Dump P1 21
........Protocol Dump P2 21
....1.6.9 Relay Broadcast Confirmation 21
........Relay Broadcast Confirmation Report P1 for OKIFAX 5750 21
........Relay Broadcast Confirmation Report P2 for OKIFAX 5750 21
........Relay Broadcast Confirmation Report P1 for OKIFAX 5950 21
........Relay Broadcast Confirmation Report P2 for OKIFAX 5950 21
........1.6.10 Internet Fax Reception Error Report (Error Mail
Report) 21
........Relay Broadcast Confirmation Report 21
....1.6.11 Activity Report 21
....1.6.11.1 Difference from OKIFAX5700/5900 21
........Activity Report 21

Table of Contents Page
....1.6.12 Message Confirmation 21
........1.6.12.1 Difference from OKIFAX5700/5900 21
........Message Confirmation (When the transmission is the
normal end) 21
........Message Confirmation (Error Report) 21
........1.6.13 Power Outage Report 21
....1.6.13.1 Difference from OKIFAX5700/5900 21
........Power Outage Report 21
....1.6.14 Confidential RX Report 21
........1.6.14.1 Difference from OKIFAX5700/5900 21
........Confidential RX Report 21
....1.6.15 Active Memory File 21
........1.6.15.1 Difference from OKIFAX 5700/5900 21
........Active Memory Files P1 21
........Active Memory Files P2 21
........Active Memory Files (In case of within 1 page) 21
....1.6.16 Broadcast Entry Report 21
........1.6.16.1 Difference from OKIFAX 5700/5900 21
........Broadcast Entry Report P1 21
........Broadcast Entry Report P2 21
........Broadcast Entry Report P1 for OKIFAX 5950 (1/2) 21
........Broadcast Entry Report P1 for OKIFAX 5950 (2/2) 21
........Broadcast Entry Report (When the destination of
Broadcast TX is specified by SPEED DIAL No. 1, No. 50, and
No. 100)
21
....1.6.17 Broadcast Confirmation Report 21
....1.6.18 Relay Broadcast Entry Report 21
....1.6.19 G3 Log Report 21
....1.6.20 NIC Configuration 21
........NIC Configuration (Type 1 ODA Version) 21
........NIC Configuration (Type 2) 21
....1.6.21 NIC Information 21
....1.6.22 E-mail Maintenance Report 21
....1.6.23 Descriptions of Communication Mode Column 21
........1.6.23.1 Mode Column in Activity Report 21
........1.6.23.2 Mode Column in MCF-multi Report (with/without
pictures) 21

Table of Contents Page
....1.6.24 Output Conditions of Various MCF Reports During
Transmission 21
........1.6.24.1 Difference from OKIFAX5700/5900 21
........1.6.24.2 Reports to be output when queuing for
communication is canceled 21
........1.6.24.3 Reports to be output upon canceling
communication by pressing STOP Key 21
........1.6.24.4 Reports to be output upon the communication
error end 21
........1.6.24.5 Reports to be output when the communication is
completed normally. 21
2 Installation
2.1 General Setup Information 76
2.2 Site Selection 77
2.3 Unpacking 78
2.4 Contents Idenfication 79
2.5 Installation of Attachments 80
2.6 AC Cord Connection 81
2.7 Telephone and Line Connections 82
2.8 Packing for Shipment 83
2.9 Initial Settings 84
....2.9.1 General Procedure of Key Operation 85
........User Functions 86
....2.9.2 Technical Functions 87
........2.9.2.1 Technical Functions Operation 1 88
........2.9.2.2 Technical Functions Operation 2 89
........2.9.2.2.1 T1 (TX) Timer Value 90
........2.9.2.2.2 T1 (RX) Timer Value 91
........2.9.2.2.3 T2 Timer *100ms 92
........2.9.2.2.4 Error Criterion 93
........2.9.2.2.5 Attenuator 94
........2.9.2.2.6 T/F Tone Att. 95
........2.9.2.2.7 MF Att. 96
........2.9.2.2.8 Ring Dura. *10ms 97
........2.9.2.2.9 CML Timing *100ms 98
........2.9.2.2.10 LED Headstrobe 99

Table of Contents Page
........2.9.2.2.11 ADMIN Email Addr. 99
........Service Personnel Initial Settings Table 2.9.2.3 (1/11) 100
........Service Personnel Initial Settings Table 2.9.2.3 (2/11) 101
........Service Personnel Initial Settings Table 2.9.2.3 (3/11) 102
........Service Personnel Initial Settings Table 2.9.2.3 (4/11) 103
........Service Personnel Initial Settings Table 2.9.2.3 (5/11) 104
........Service Personnel Initial Settings Table 2.9.2.3 (6/11) 105
........Service Personnel Initial Settings Table 2.9.2.3 (7/11) 106
........Service Personnel Initial Settings Table 2.9.2.3 (8/11) 107
........Service Personnel Initial Settings Table 2.9.2.3 (9/11) 108
........Service Personnel Initial Settings Table 2.9.2.3 (10/11) 109
........Service Personnel Initial Settings Table 2.9.2.3 (11/11) 110
........2.9.2.4 TEL/FAX Automatic Switching 111
........2.9.2.5 TAD mode 112
........2.9.2.6 Outline of Parallel Pickup 113
....2.9.3 User's Functions 114
....2.9.4 Location Program 115
........2.9.4.1 Select Menu is shown as below: 116
........2.9.4.1 Location Program (1/2) 117
........2.9.4.1 Location Program (2/2) 118
....2.9.5 Setup 119
........2.9.5.1 Clock Adjustment 120
........2.9.5.2 ID/Password Programming 121
............2.9.5.2.1 TSI/CSI 122
............2.9.5.2.2 TSI/CSI Option 122
............2.9.5.2.3 Sender ID 123
............2.9.5.2.4 ISDN Tid 123
............2.9.5.2.5 ISDN Sub No. 123
........2.9.5.3 Machine Settings: 124
............2.9.5.3.1 Auto Answer Mode 125
............2.9.5.3.2 TX Mode Default 126
........2.9.5.4 Dial Options & Table 127
............2.9.5.4.1 Redial Tries 129
............2.9.5.4.2 Redial Interval 130
............2.9.5.4.3 Dial Prefix 131
........2.9.5.5 Incoming Options 132

Table of Contents Page
............2.9.5.5.1 CNG Count 134
............2.9.5.5.2 Distinctive Ring 136
........2.9.5.6 Report Options: 135
............2.9.5.7.1 POP Interval 139
............2.9.5.7.2 DOMAIN Name 140
............2.9.5.7.3 Network Settings 141
............2.9.5.7.3.1 IP Address 139
............2.9.5.7.3.2 Subnet Mask 139
............2.9.5.7.3.3 Default Gateway 141
............2.9.5.7.3.4 SMTP Server Name 141
............2.9.5.7.3.5 POP Server Name 141
............2.9.5.7.3.6 POP User ID 141
............2.9.5.7.3.7 POP Password 141
............2.9.5.7.3.8 DNS P.SRV Addr. 141
............2.9.5.7.3.9 DNS S.SRV Addr. 141
............2.9.5.7.3.10 Host Name 141
............2.9.5.7.3.11 Fax Email Addr. 141
........2.9.5.7 LAN Options (1/2) 137
........2.9.5.7 LAN Options (2/2) 137
....2.9.6 User Default Setting 1 142
....2.9.6 User Default Setting 2 142
....2.9.7 Default Setting of Dial Parameters 143
....2.9.8 Technical Default Setting 144
....2.9.9 Off-line tests 145
........2.9.9.1 Self Diagnosis Flow 146
........Self Diagnosis Report 147
........2.9.9.2 Self Diagnosis Report 146
............2.9.9.2.1 Difference from OKIFAX 5700/5900 146
....2.9.10 On-line Tests 148
2.10 Installation of optional units 151
....2.10.1 Optional units 152
....2.10.2 Memory Board Installation Instruction 153
....2.10.3 Network Card Installation Instruction 154
....2.10.4 G4 Board Installation Instruction 155
....2.10.5 G3 Dual Line Installation Instruction 155
....2.10.6 Second Paper Cassette Unit 155

Table of Contents Page
3 Brief Technical Description
Electrophotographic Process Flow 78
3.1 Fundamentals of the Electro-Photographic Process 157
3.2 Actual Electrophotographic Process 158
3.3 Board and Units 159
3.4 Overall Dimension and Mechanical Structure 160
4 Disassembly
4.0 General 161
....4.1 Precautions for Parts Replacement 162
....4.2 Tools 163
....4.3 How to Disassemble and Reassemble 164
........Whole Unit Picture 165
........4.3.1 Document Table Cover 166
........4.3.2 Rear Cover and NCU Cover 167
........4.3.3 Main Cover 168
........4.3.4 Operation Unit 169
........4.3.5 NCU Board 170
........4.3.6 MODEM Board 171
........4.3.7 Plate Package 172
........4.3.8 Scanner Unit (CIS) 173
........4.3.9 Stacker Frame 174
........4.3.10 Printer Unit 175
........4.3.11 Fan and Fan Guard 176
........4.3.12 Main Board 177
........4.3.13 Contact Assembly and High-/Low Voltage Power
Supply Boards 178
........4.3.14 Disassembling the Operation Unit 179
............4.3.14.1 Disassembling the Operation Unit 180
........4.3.15 Disassembling the Scanner Unit (L) 181
........4.3.16 Scanner (CIS) 182
........4.3.17 PC1/PC2 Sensors 183
........4.3.18 Speaker 184
........4.3.19 Scanner Motor 185
........4.3.20 Disassembling the Printer Unit 186
........4.3.21 LED Head 187
........4.3.22 Toner Lockout Board 188

Table of Contents Page
........4.3.23 Stacker Cover 189
........4.3.24 Fusing Unit 190
........4.3.25 Manual Feed Assembly 191
........4.3.26 Back-up Roller, Transfer Roller 192
........4.3.27 Resist Roller, Hopping Roller, Sensor Plates 193
........4.3.28 Eject Guide Assembly 194
5 Adjustments
5.1 Setting of LED Print Head Drive Time 195
....Settings of Technical Function No. 26 (Table 5.1.1) 196
....5.2.1 Confirmation Items 197
....5.2.2 Measurement 198
6 Cleaning and Maintenance
6.1 Replacement of Consumables 199
6.2 Routine Inspection 200
6.3 Printer Counter Display/Clear (User) 201
6.4 Printer Counter Display/Clear (Service) 202
6.5 Self-Diagnosis Test 203
6.6 Sensor Calibration Test 204
6.7 LED Test 205
6.8 Tone Send Test 206
6.9 High-Speed Modem Send Test 207
6.10 High-Speed Modem Receive Test 208
6.11 MF Send Test 209
6.12 Tone (TEL/FAX) 210
6.13 ISDN Sending Test 211
6.14 Tone Send Test G3 211
6.15 Moden Send Test G3 211
6.16 MF (Tone) Test G3 211
6.17 Protocol Data Dump Printing 211
6.18 System Reset 212
6.19 Service Codes 213
....Service Code list [Table 6.15.1] (1/2) 214
....Service Code list [Table 6.15.1] (2/2) 215
....G4 Service Code Lists 216
....6.19.3 Internet-Fax Service Code List 216
7 Troubleshooting

Table of Contents Page
7.1 Overview 218
....7.1 Overall Troubleshooting Flow Chart 219
....7.2 No LCD Operation 220
....7.3 ALARM LED On 221
....7.4 Printing Test Failure 222
....7.5 No Local Copy 223
....7.6 Auto Dial Failure 224
....7.7 Transmission Problem 225
....7.8 Auto Reception Failure 226
....7.9 Reception Problem 227
....7.10 Sensor Calibration Test 228
....7.11 LED Test 229
....7.12 Tone Send Test 230
....7.13 High-Speed Modem Test 231
....7.14 MF Send Test 232
....7.15 Tone (TEL/FAX) Send Test 233
....7.16 No Acoustic Line Monitor 234
....7.17 Power Supply Unit 235
....7.18 No Document Feeding 236
....7.19 Multiple Document Feeding 237
....7.20 Document Skew 238
....7.21 Document Jam 239
....7.22 Printer Unit 240
........7.22.1 Precautions 241
........7.22.2 Troubleshooting Flow Charts of Printer Unit 242
........Table 7.22.2 Alarm Display 243
............Troubleshooting flow chart 1: Top Cover is Open 244
............Troubleshooting flow chart 2: Replace Image Drum
Message 245
............Troubleshooting flow chart 3: Engine Controller Error 246
............Troubleshooting flow chart 4: Fuser Unit Thermal Error 247
............Troubleshooting flow chart 5: Paper Jams 248
............Troubleshooting flow chart 6: No Paper Tray or No
Paper 249
............Action Items (Printer Unit-LCD Message) Table 7.22.3 250
............Sample Image Problems (Figure 7.22.1) 251

Table of Contents Page
............Troubleshooting flow chart 7: Light or Blurred Output 252
............Troubleshooting flow chart 8: Smeared Background on
Output 253
............Troubleshooting flow chart 9: Blank Output 254
............Troubleshooting flow chart 10: Vertical Black Stripes on
Output 255
............Troubleshooting flow chart 11: Evenly Spaced Marks on
Output 256
............Troubleshooting flow chart 12: Missing Print on Output 257
............Troubleshooting flow chart 13: Vertical White Stripes on
Output 258
............Troubleshooting flow chart 14: Poor Fusing 259
........7.23 G3 Dual Line Troubleshooting Flow Chart 259
........7.24 Auto Dial Failure (G3 Dual Line) 259
........7.25 Transmission Problem (G3 Dual Line) 259
........7.26 Auto Reception Failure (G3 Dual Line) 259
........7.27 Reception Problem (G3 Dual Line) 259
........7.28 High-speed Modem Test (G3 Dual Line) 259
........7.29 MF Send Test (G3 Dual Line) 259
........7.30 No Acoustic Line Monitor (G3 Dual Line) 259
8 Dipswitch Setting Tables
Portuguese 260
A Board Descriptions
Preface 261
Service Caution 262
A1.1 Unit Configuration and Block Diagram 263
....Block Diagram 264
A2.1 Signal Flow Explanation 265
....1. Copy 266
....2. G3 TX (MH/MR/MMR) 267
....2-1. G3 TX (JBIG): OKIFAX 5950 only 268
....3. G3 RX (MH/MR/MMR) 269
....3-1. G3 RX (JBIG): OKIFAX 5950 only 270
....4. PC Print (Option) 271
....5. PC Scanner (Option) 272
....6. PC-FAX TX (Option) 273

Table of Contents Page
....7. PC-FAX RX (Option) 274
....8. ISDN PC-FAX G3 TX (Option) 275
....9. ISDN PC-FAX G3 RX (Option) 276
....10. ISDN G3 TX (Option) 277
....11. ISDN G3 RX (Option) 278
....12. G4 TX (Option) 279
....13. G4 RX (Option) 280
....14. LAN Print (Option) 281
....15. Internet Fax Tx (Option) 281
....16. G3 Dual Ine Tx (MH/MR/MMR) (Option) 281
....17. G3 Dual Line Rx (MH/MR/MMR) (Option) 281
A2.2 Explanation of Signal Flowchart 281
A3.1 MCNT 281
....A3.1.1 CPU
....A3.1.2 IOGA5
....A3.1.3 Scanner Control
....A3.1.4 JBIG Control
....A3.1.5 Scanner Motor Control
....A3.1.6 CPU Peripheral Circuits
....A3.1.7 LED Head Control
....A3.1.8 Heater Control
....A3.1.9 Printer Motor Control
....A3.1.10 Toner Low Detection 282
....A3.1.11 Centronics Parallel Interface 283
....A3.1.12 Electrophotographic Process 284
....A3.1.13 Process Operation Descriptions 285
A3.2 OPE Control 285
A3.3 MODEM C34 PC Board 285
....IC201 Pin Assignment 285
....IC202 Pin Assignment 285
A3.4 UNC, WN5, FN5 and DN5 Circuit Diagram 285
A3.4 Description on the NCU Block Diagram 285
....A3.4.1 UNC circuit diagram 285
....A3.4.2 WN5 circuit diagram 285
....A3.4.3 FNS circuit diagram 285
....A3.4.4 DN5 circuit diagram 285

Table of Contents Page
A3.5 Power Supply Board 285
A3.6 High-voltage Power Supply Circuit 285
A3.7 G4A-PCB 285
A3.8 G3A - PCB 285
B Print Operation Description
B.1 Mechanical Components 286
B.2 Description of Print Operations 287
....1) Hopping and feeding 288
....2) Charging 289
....3) Exposure 290
....4) Developing 291
....5) Transfer 292
....6) Fusing 293
....7) Cleaning 294
....8) Cleaning of rollers 295
B.3 Errors 296
....B.3.1 Errors List 297
....B.3.2 Major Trouble Errors 298
........B.3.2.1 Fuse Error 299
........B.3.2.2 Fan Error 300
........B.3.2.3 Paper Feed Monitoring 301
........B.3.2.4 2'nd Tray Communication Error 302
........B.3.2.5 Cover Open 303
....B.3.3 Recoverable errors 304
........B.3.3.1 Toner Low Detection 305
B.4 Other Special Cases 306
....B.4.1 Manual Paper Feed 307
....B.4.2 Cleaning 308
....B.4.2 Diagram - Description of Print Operations 309
C Illustrated Parts List
Illustrated Parts List 310
....Section 1: Cabinet Assembly 311
....Section 2: Control Panel Assy 312
....Section 3: Printer Assembly 313
....Section 4: Base Assembly 314
....Section 5: Frame Assy Scanner - (L) 315

Table of Contents Page
....Section 6: Frame Assy - Scanner (U) 316
....Section 7: Cables, Option Boards 317
D Second Paper Feeder
Preface 318
1. Outline 319
....1.1 Functions 320
....1.2 External View and Component Names 321
2. Mechanism Description 322
....2.1 General Mechanism 323
....2.2 Hopper Mechanism 324
3. Parts Replacement 325
....3.1 Precautions Concerning Parts Replacement 326
....3.2 Parts Layout 327
....3.3 Parts Replacement Methods 328
........3.3.1 Stepping motor (Hopping) 329
........3.3.2 TQSB2 PCB 330
........3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear 331
4. Troubleshooting 332
....4.1 Precautions Prior to the Troubleshooting 333
....4.2 Preparations for the Troubleshooting 334
....4.3 Troubleshooting Method 335
........4.3.1 LCD Status Message List 336
5. Connection Diagram 337
....5.1 Interconnection Diagram 338
....5.2 PCB Layout 339
6 Parts List 340

Service Guide OKIFAX 5750/5950
Chapter 0 Introduction
Page: 2
Copyright
This document may not be reproduced without the written permission of Okidata Training and Publications. Every effort has been made to ensure the accuracy of
the information contained in this training course. Okidata is not responsible for errors beyond its control.
Copyright / About Information
Copyright 2000 by Okidata All rights reserved.
Written by Okidata Training and Publications
Contact
Please address any comments on this publication to:
Mailing Address Okidata Training and Publications
2000 Bishops Gate Blvd.
Mount Laurel, NJ 08054-3499
Web Site www.okidata.com
Copyright Listing
OKIDATA is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de Oki Electric Industry Company, Ltd.; marca registrada, Oki
Electric Industry Company, Ltd.
IBM, PC, PC-DOS, and Proprinter XL are registered trademarks of International Business Machines Corporation.
Microsoft and MS-DOS are registered trademarks and Microsoft Basic, Windows, TrueImage, and TrueType are trademarks of Microsoft Corporation.
Okilink II is a trademark of Oki Electric Industry Company, Ltd.
ZIP Code is a registered trademark of the United States Postal Service.
Copyright 2000, Oki Data, Division of OKI America, Inc. All rights reserved. See the Oki Data Business Partner Exchange
(BPX) for any updates to this material. (http://bpx.okidata.com)

Service Guide OKIFAX 5750/5950
Chapter 1 General Information
Page: 3
1.1 General Performance
1Type of appearance
Desktop typel
2Applicable lines
PSTN (Public switched telephone network)lPBX (Private branch exchange)lISDN (Integrated service digital network)lFAX2NET Internet Fax (via PSTN)lE-mail Internet Fax (via LAN)lNote: ISDN and Internet Fax are options.
3Compatibility
ITU-T Group 3 facsimile transceiverlITU-T Group 4 facsimile transceiver (option)l
4Document width
Max. 216 mm (8.5 inches [North American Letter])lMin. 148 mm (5.83 inches [ISO A5 size])l
5Effective reading width
(TX):
Max. 215.4 mm (NA Letter)l208.6 mm (ISO A4 size)l(RX):
208.6 mm (NA Letter)l208.6 mm (ISO A4 size)*1l* Printing width will be 206 mm
6Scanning length
128 mm to 356 mm (5.06 inches to 14 inches)l(Length setting: Long documents (1500 mm) are also available.)
7Automatic document feeder (ADF)
50 sheets (NA Letter/A4-size: 20-lb/75 gm Oki Data recommended paper)l30 sheets (North American Letter/A4-size: 16 to 28-1b bond/60-105 gm)l
8Recording paper or sheet
1st cassette: North American Letter/NA Legal/A4-size plain paper cut 250 sheets capacity (20-lb/75 gm)l2nd cassette (option): North American Letter/NA Legal/A4-size plain paper cut 500 sheets capacity (20-lb/75 gm)lManual paper feeder: Transparency for overhead projector, applicable. sheet size: NA Letter/NA Legal/A4-sizel* : Oki Data Recommended paper
9Printable width
North American: 211.3 mm (203.2 mm for assured quality)lNorth American Legal: 211.3 mm (203.2 mm for assured quality)l

ISO A4: 206.0 mm (197.3 mm for assured quality)l
10 Printable length
NA Letter: 273.4 mm (10.76 inches) / 266.7 mm (10.49 inches) for assured qualitylNA Legal: 349.6 mm (13.76 inches) / 342.9 mm (13.49 inches) for assured qualitylISO A4: 291.0 mm (11.46 inches) / 284.3 mm (11.19 inches) for assured qualityl
11 Copy stacker
Face down stacking: Max. 200* sheetslFace up stacking: Max. 10* sheetsl*Note 1: Oki Data Recommended paper
*Note 2: Face down or face up stacking is changeable by the lever.
12 Scanning resolution
a) Horizontal
300 dots per inch (Note: 600 dpi x 15.4 mm (600 x 600 dpi)*; copy is available) * In case 8 MB option memory is installed.lb) Vertical
300 dots per inch, 15.4, 7.7 and 3.85 lines per mm (Note: 300 dpi x 300 dpi; Transmission is available.l
13 Scanning method
2592 bits contact image sensorl
14 Recording resolution)
a) Horizontal: 600 dots/inch
b) Vertical:
Variable:
STD mode (A4: 3.85 to 5.06 line/mm) (Letter: 3.85 to 5.28)lFINE mode (A4: 7.7 to 9.3 line/mm) (Letter: 7.7 to 10.57)lEX-FINE mode : (A4: 15.4 line/mm) (A4 15.4 to 19.87 line/mm) (Letter: 15.4 to 21.15)lEX-FINE (300 dot/inch): (A4: 300 to 387 mm/line) (Letter: 300 to 412)l
Fixed:
lEX-FINE mode : 300 dot/inch, 15.4 line/mmlFINE mode: 7.7 line/mmlSTD mode: 3.85 line/mmlPC-Print: 600 dot/inch, 300 dot/inchl
15 Printing method
Electrophotographic printing
211.3 mm (2496 bits) LED printheadl
16 Minimum scan line time for reception
When receiving from OKIFAX or ECM: 0 mslWhen receiving from non- OKIFAX and non ECM: 10 ms at 3.85 line/mm; 5 ms at 7.7 line/mm, 15.4 line/mml
17 Print speed
Max. 10 sheets per minute (at NA letter size)l
18 Coding scheme
Modified Huffman (MH)l

Modified READ (MR)lModified Modified READ (MMR)lJBIG (only for OKIFAX 5950)l
19 Modem (Rev. 2)
ITU-T Rec. V.29: 9600 bps for use on point-to-point 4-wire leased telephone type circuits.lITU-T Rec. V.27 ter: 4800 bps modem for use in GSTN (General Switched Telephone Network)lITU-T Rec. V.21 channel 2: 300 bps duplex modem for GSTNlITU-T Rec. V.17: 2-wire modem for fax applications up to 14.4 kbpslITU-T Rec. V.34l
20 Transmission speed
2.5 sec. per sheet of ITU-T No. 1 evaluation test chart (for OKIFAX 5950)l3.0 sec. per sheet of ITU-T No. 1 evaluation test chart (for OKIFAX 5750)l
Note: This is Phase C time at 3.85 line/mm.
21 Protocol
ITU-T Rec. T.30lITU-T Rec. G4 Class 1 (option)lOKI special protocols: High-speed protocol (G3)l
22 Error correction mode (ECM)
ITU-T ECMl
23 Image memory
Basic mode: 2.5 M-byte (OKIFAX 5750) & 4.5 M-byte (OKIFAX 5950)lOptional memory: 2.0/4.0/8.0 M-bytel
24 Liquid crystal display (LCD)
Four lines of 20 characters for operation guidance, check and various kinds of informationl
25 Power source
Nominal input voltage 120 VAC for ODA versionlNominal input voltage 230 VAC for INT'L versionl
26 MFP (Multi- Function Peripheral) function
PC Printer FunctionlPC Scanner FunctionlPC Fax Modem Functionl
Note: For details, see "Product Specification for MFP". Hardware is standard and software is Bi-Centro interface.
27 ISDN function (option)
G4 functionlISDN G4: CommunicationlISDN G3: CommunicationlISDN: Report and ListlDual 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, 4.1xlTCP/IPlWindows NT/95/98/3.1lT600 dpi, 10 ppml

Note: For details, see "Product Specification for Network Print Kit"
29 Internet FAX Kit: E-mail type (option)
I-Fax SendinglI-Fax ReceivinglGateway Service 1lGateway Service 2lI-Fax Servicel
Note: For details, see Product Specification for Internet FAX Kit.
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".
32 600 dpi Communication (option)
Note: For details, see Product Specification for FAX2NET Specification".
33 Relay Broadcast
Note: For details, see Product Specification for FAX2NET Specification".
NA = North America
Copyright 2000, Oki Data, Division of OKI America, Inc. All rights reserved. See the Oki Data Business Partner Exchange
(BPX) for any updates to this material. (http://bpx.okidata.com)

Service Guide OKIFAX 5750/5950
Chapter 1 General Information
Page: 4
1.2 General User's Function
1) Transmission
1Transmit mode
Automatic transmit modelManual transmit model
2Instant Dialing
3Delayed feeder transmission
4Memory transmission
40 sessionsl
5Delayed memory transmission (within 3 days)
20 specified times for OKIFAX 5750l30 specified times for OKIFAX 5950l
6Sequential broadcast (Memory)
150 stations for OKIFAX 5750l240 stations for OKIFAX 5950l
7Delayed broadcast
20 specified times for OKIFAX 5750l30 specified times for OKIFAX 5950l
8Confidential message transmission
Feeder Confidential TXlMemory Confidential TXl
9Relay broadcast initiate
Feeder Relay broadcast initiatelMemory Relay broadcast initiatel
10 Polling transmission
Feeder Polling TXlMemory Polling TXl
11 Bulletin Poll transmission (When Box number is opened).
16 boxesl
12 Batch transmission
13 Priority transmission
14 Transmission preparation (Feeder)
2) Reception
1Receive mode
Automatic receive modelManual receive modelTEL/FAX receive modelTAD model