Oki FAX 5250 User manual

Service Guide OKIFAX 5250/5400
Chapter 0 About This Manual
Front Cover
OKIFAX
5250 & 5400
Facsimile Products
Adobe Acrobat printable reference copy
of the OKIDATA Service Training Manual.
11/16/99
Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures
rendered at 72 dpi, which is ideal for screen viewing. For future updates to this manual, and
more on-line information visit our Business Partner Exchange (BPX) at
http://bpx.okidata.com.

Table of Contents Page
Service Guide OKIFAX 5250/5400
0 Introduction
Preface 1
1 General Information
1.1 General Performance 2
1.2 General User's Function 3
1.3 General Maintenance Functions 4
1.4 General Appearance 5
1.5 Basic Performance Specifications 6
....Table 1.5.1 (1/9) Basic Performance Specifications 7
....Table 1.5.1 (2/9) Basic Performance Specifications 8
....Table 1.5.1 (3/9) Basic Performance Specifications 9
....Table 1.5.1 (4/9) Basic Performance Specifications 10
....Table 1.5.1 (5/9) Basic Performance Specifications 11
....Table 1.5.1 (6/9) Basic Performance Specifications 12
....Table 1.5.1 (7/9) Basic Performance Specifications 13
....Table 1.5.1 (8/9) Basic Performance Specifications 14
....Table 1.5.1 (9/9) Basic Performance Specifications 15
1.6 Reports and Lists 16
....Call-back Message (Example) 17
....Sender ID Format: (Example) 18
....TSI Printing (Example) 19
....Cancel Report Format: Power Outage Report (Example) 20
....Activity Report (Example) 21
....Message Confirmation Report 22
....Broadcast Entry Report (Example) 23
....Broadcast Confirmation Report (Example) 24
....Confidential Reception Report (Example) 25
....Telephone Directory (Examples 1 through 6) 26
....Configuration Report 27
2 Installation Procedures
2.1 General 28
2.2 Site Selection 29
2.3 Unpacking 30
2.4 Check of Contents 31
2.5 Installation of Attachments 32
2.6 AC Cord Connection 33
2.7 Telephone and Line Connections 34
2.8 Packing for Shipment 35
2.9 Initial Settings 36
....2.9.1 General Procedure of Key Operation 37
....2.9.2 Technical Functions 38
........Technical Functions Table 39
........TEL/FAX Automatic Switching (Technical Function 09) 40
........TAD Mode (Technical Function 07) 41
....2.9.3 Technical Functions Example 42
........Technical Functions 01 to 11 43
........Technical Functions 12 to 16 44
........Technical Functions 17 to 23 45
........Technical Functions 24 to 27 46
........Technical Functions 28 to 31 47

Table of Contents Page
....2.9.4 User's Functions 48
........Feature Specifications 49
........Dual Access Combination Table (1/2) 50
........Dual Access Combination Table (2/2) 51
........2)-1 One-Touch Key Operations 52
........One-Touch Key Program Settings (Table 2.9.4) 53
........2)-2 Function Program 54
....2.9.5 User's Functions Example 55
........User's Functions Table 56
....2.9.6 Clock Adjustment 57
....2.9.7 Dual Access Operation 58
....2.9.8 System Data Programming 59
....2.9.9 Dial Parameters Settings 60
........Dial Parameters Settings Table 61
....2.9.10 Off-line Tests 62
....2.9.11 On-line Tests 63
2.10 Installation of Optional Units 64
....1. Installation of the Memory Board 65
....2. Installation of CTR (PC interface) board (OF5400 only) 66
....3. Installation of an Optional Telephone Set 67
....4. Second Paper Cassette Unit 68
3 Brief Technical Description
3.1 Fundamentals of the Electro-Photographic Process 69
....Electric Photographic Process Flow 70
3.2 Actual Electo-photographic Process 71
3.3 Boards and Units / Block Diagram 72
....Block Diagram 73
3.4 Overall Dimension and Mechanical Structure 74
4 Disassembly
4.1 General 75
....4.1.1 Precautions for Parts Replacement 76
4.2 Tools 77
4.3 How to Disassemble and Reassemble 78
........Disassembly Procedure Flow 4.1 (1of 2) 79
........Disassembly Procedure Flow (Figure 4.2) 2 of 2 80
....4.3.1 LED Print Head 81
....4.3.2 Image Drum, Covers (Rear, NCU, Main) Separation
Plate, Boards (NCU, Modem) 82
....4.3.3 Control Panel Assembly, Paper Guide (U) Assembly 83
....4.3.4 Sub-roller, ADF Roller Assembly, Pinch Roller, Contact
Image Sensor, Document Detectors (PC1 and PC2) 84
....4.3.5 Motors (Resist, Drum), Assemblies (Release Guide,
Manual Guide) Stacker Cover, Fusing Unit 85
....4.3.6 Lower Base, Motor Assembly, Back-up Roller, Transfer
Roller 86
....4.3.7 Resist Roller, Hopping Roller, Sensor Plate 87
....4.3.8 E17 Board, Power Supply Unit, Contact Assembly,
Transformer, Sub-PSU 88
5 Adjustments
5.1 Setting of LED Print Head Drive Time 89
5.2 Confirmation Items 90

Table of Contents Page
5.3 Measurement 91
....Measurement Points on M17 Board 92
6 Cleaning and Maintenance
6.1 Consumables Replacement 93
....Service Technician Replaceable 94
....Replaceable Items Diagram 95
....Others - Reliability 96
6.2 Routine Inspection 97
....Routine Inspection 98
....Preventative Maintenance Diagram 99
6.3 Printer Counter Display/Clear (User) 100
6.4 Printer Counter Display/Clear (Service) 101
6.5 Self-Diagnosis Test 102
....Self-Diagnosis Test Sample 103
6.6 Sensor Calibration Test 104
6.7 LED Test 105
6.8 Tone Send Test 106
6.9 High-speed Modem Send Test 107
....High-speed Modem Send and Receive Test Diagram 108
6.10 High-speed Modem Receive Test 109
6.11 MF Send Test 110
6.12 Tone (TEL/FAX) 111
6.13 Protocol Data Dump 112
....Dump data description 113
....Data Analysis 114
....FCF - Facsimile Control Field Conversion Table 115
6.14 System Reset 116
6.15 Service code 117
....Service Codes Table 118
7 Troubleshooting
7.1 Overview 119
....7.1 Overall Troubleshooting Flow Chart 120
....7.2 No LCD Operation 121
....7.3 Alarm LED On 122
....7.4 Printing Test Failure 123
....7.5 No Local Copy 124
....7.6 Auto Dial Failure 125
....7.7 Transmission Problem 126
....7.8 Auto Reception Failure 127
....7.9 Reception Problem 128
....7.10 Sensor Calibration Test 129
....7.11 LED Test 130
....7.12 Tone Send Test 131
....7.13 High-speed Modem Test 132
....7.14 MF Send Test 133
....7.15 Tone (TEL/FAX) Send Test 134
....7.16 No Acoustic Line Monitor 135
....7.17 Power Supply Unit 136
....7.18 No Document Feeding 137
....7.19 Multiple Document Feeding 138
....7.20 Document Skew 139

Table of Contents Page
....7.21 Document Jam 140
....7.22 Printer Unit 141
........7.22.1 Precautions 142
........7.22.2 Troubleshooting Flow Charts of Printer Unit 143
............Overall Troubleshooting Flowchart 144
............1: Top Cover is Open 145
............2: Replace Image Drum Message 146
............3: Engine Controller Error 147
............4: Fan Motor Rotation Error 148
............5: Fuser Unit Thermal Error 149
............6: Paper Jams 150
............7: No Paper Tray or No Paper 151
............Action Items (Printer Unit-LCD Message) Table 152
........7.22.3 Image Problems Table 153
............Sample Image Problems 154
............8: Light or Blurred Output 155
............9: Smeared Background on Output 156
............10: Blank Output 157
............11: Vertical Black Stripes on Output 158
............12: Evenly Spaced Marks on Output 159
............13: Missing Print on Output 160
............14: Vertical White Stripes on Output 161
............15: Poor Fusing 162
8 Dipswitch Settings
8.1 General Information 163
A Board Descriptions
A1.1 Unit Configuration and Block Diagram 164
....Block Diagram 165
....Block Diagram Abbreviations 166
A1.2 Function of Each Unit 167
A2.1 Signal Flow Explanation 168
....(1) Copy Mode 169
....Copy Picture Signal 170
....(2) G3 Send Mode 171
....G3 Send Pciture Signal 172
....(3) G3 Receive Mode 173
....G3 Receive Picture Signal 174
....(4) 300 bps Send Mode 175
....300 bps Send Signal 176
....(5) 300 bps Receive Mode 177
....300 bps Receive Signal 178
....(6) Report Printing 179
....Report Printing Signal 180
....(7) Memory Transmission 181
....(8) Memory Reception 182
A3.1 Main Control Board (E17) Circuit Diagrams 183
....A3.1.1 E-17 - CPU Circuit Diagram 184
........Related Signals of CPU Diagram 185
....A3.1.2 E17 - FLS, MASK and Real Time Clock Circuit
Diagram 186
........Block Diagram of FLS, MASK and Real Time Clock 187

Table of Contents Page
....A3.1.3 E17 - Audio Monitor Circuit Diagram 188
........Block Diagram of Audio Monitor Circuit 189
....A3.1.4 E17 - CIS (contact image sensor) Block Diagram 190
........Block Diagram of CIS (contact image sensor) 191
....A3.1.5 IEXSEED300 Diagram 192
........Related Signals of IEXSEED300 193
....A3.1.6 E17 - Modem Diagram 194
........Related Signals of Modem 195
....A3.1.7 E17 - NCU, OPE, and PC1/PC2 Circuit Diagram 196
........Interface between E17 Board and NCU Board 197
........Interface between E17 Board and OPE 198
........Related Signals of PC1/PC2 199
....A3.1.8 E17 - LED Circuit Diagram 200
........Related Signals and Block Diagaram of LED Head 201
....A3.1.9 E17 - Send Motor Circuit Diagram 202
........Related Signals of Send Motor 203
....A3.1.10 E17 - Drum/Resist Motor Circuit Diagram 204
........Related Signals of Drum/Resist Motor 205
....A3.1.11 E17 - Fan Motor Circuit Diagram 206
........Related Signals of Fan Motor 207
........Interface between E17 Board and 2'nd Tray 208
....A3.1.12 E17 - Main Power Supply Circuit Diagram 209
........Sensor Functions 210
........Sensors and Switch Control 211
........Fuser Unit Temperature Control 212
........High/Medium Voltage Control 213
....A3.1.13 E17 - Optional Memory and CTR Circuit Diagram 214
........Interface: E17 Board to Optional Memory Board Diagram 215
........Interface E17 Board to CR Board (PC interface unit)
Diagram 216
....A3.1.14 E17 DRAM Diagram 217
........Block Diagram of DRAM 218
A3.2 OPE (05W) Circuit Diagram 219
....Block Diagram of OPE (operation unit) Diagram 220
A3.3 Power Supply Unit 221
....A3.3.1 Circuit Diagram for 1VP/2VP (1/2) 222
........1. Low-voltage power supply circuit 223
........2. Input ratings 224
........3. Output ratings 225
........4: Block Diagram 226
........Block Diagram of PWU (Power Supply Unit) 227
........5. General functional description 228
............5-1 General 229
............5-2 Circuit Description 230
............5-2-1 AC input section 231
............5-2-2 Heater control circuit 232
............5-3 Low-voltage section 233
............5-3-1 +30 V circuit 234
............5-3-2 +/- 8 V circuit 235
............5-3-3 +5 V circuit 236
............5-4 Protection circuit 237

Table of Contents Page
............5-5 Cover open circuit 238
....A3.3.2 1VP (for 120V)/2VP (for 230V) Circuit Diagram (2/2) 239
........5-6 High-voltage Section 240
........5-6-1 Functional overview 241
........5-6-2 SB2, DB1, DB2 and CB 242
........5-6-3 TR1 and TR2 243
........5-6-4 CH 244
........5-7 Photosensors 245
A3.4 UNC, WN5, FN5 and DN5 Circuit Diagram 246
....UNC (NCU) Circuit Diagram 247
........Block Diagram of UNC 248
....WN5 Circuit Diagram 249
........Block Diagram of WN5 250
....FN5 Circuit Diagram 251
........Block Diagram of FN5 252
....DN5 Circuit Diagram 253
........Block Diagram of DN5 254
A3.5 TELU, TEL-W2, TEL-W1, and TEL-W2F Circuit Diagram
(option) 255
....TELU Circuit Diagram (option) 256
........Block Diagram of TEL-U (option) 257
....TEL-W2 Circuit Diagram 258
........Block Diagram of TEL-W2 259
....TEL-W1 Circuit Diagram 260
........Block Diagram of TEL-W1 261
....TEL-W2F Circuit Diagram 262
........Block Diagram of TEL-W2F 263
A3.7 MEMO (memory) Circuit Diagram (option) 264
....Related Signals of Memory Board 265
A3.8 CTR Circuit Diagram (PC interface unit: OF5400 option) 266
....Related Signals of P050 (PC interface unit) Diagram 267
A3.9 TQSB (Second tray) Circuit Diagram: option 268
....Block Diagram of 2nd Tray 269
B Print Operation Description
Overview 270
B.1 Mechanical Components 271
....1) Image drum cartridge 272
....2) Resist motor 273
....3) Drum motor 274
....4) LED head 275
....5) Fuser 276
....Layout of Print Station Components 277
B.2 Description of Print Operations 278
....B2.1 Process Operations 279
........1) Hopping and feeding 280
........2) Charging 281
........3) Exposure 282
........4) Developing 283
........5) Transfer 284
........6) Fusing 285
........7) Cleaning 286

Table of Contents Page
........8) Cleaning of rollers 287
....B.3 Errors 288
........B.3.1 Errors List 289
........B.3.2 Major Trouble Errors 290
............B.3.2.1 Fuser Error 291
............B.3.2.2 Fan Error 292
............B.3.2.3 Paper Feed Monitoring 293
............B.3.2.4 2'nd Tray Communication Error (Printer Alarm 2) 294
............B.3.2.5 Cover Open 295
........B3.3.3 Recoverable Errors 296
............B3.3.3.1 Toner Low Detection 297
............Composition 298
............Operation 299
............Operation during toner full state 300
............Operation during toner low state 301
............Low Toner Alarm 302
....B.4 Other Special Cases 303
........B.4.1 Manual Paper Feed 304
........B.4.2 Cleaning 305
C Circuit Diagrams
C.1 General Information 306
D Illustrated Parts List
Assembly 307
1: Cabinet Assembly 308
2: Control Panel Assembly 309
3A: Printer Assembly (1 of 2) 310
3B: Printer Assembly (2 of 2) 311
4A: Base Assembly (1 of 2) 312
4B: Base Assembly (2 of 2) 313
5: Scan Unit 314
6: Paper Guide U Assembly 315
7: Cables 316
8: Option Telephone 317
9A: Second Paper Feed (Option) 318
9B: Second Paper Feed (Option) 319
10: Miscellaneous 320
....Whole Unit 321
....Consumables 322
....Options 323
E Board Layout
Diagram 324
F Second Paper Feeder
1. Outline 325
....1.1 Functions 326
....1.2 External View and Component Names 327
2. Mechanism Description 328
....2.1 General Mechanism 329
....2.2 Hopper Mechanism 330
3. Parts Replacement 331
....3.1 Precautions Concerning Parts Replacement 332
....3.2 Parts Layout 333

Table of Contents Page
....3.3 Parts Replacement Methods 334
........3.3.1 Stepping Motor (Hopping) 335
........3.3.2 TQSB2-PCB 336
........3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear 337
4. Troubleshooting 338
....4.1 Precautions Prior to the Troubleshooting 339
....4.2 Preparations for the Troubleshooting 340
....4.3 Troubleshooting Method 341
........4.3.1 LCD Status Message List 342
5. Connection Diagram 343
....5.1 Interconnection Diagram 344
....5.2 PCB Layout 345
6. Parts List 346
G RMCS System
Introduction 347
1. Notes to Users 348
....1.1 Identifying the Packaged Contents 349
....1.2 Required Devices 350
....1.3 Connectable Peripheral Equipment 351
2. Setup 352
....2.1 Mounting 353
........2.1.1 Mounting Procedures 354
....2.2 Installation 355
........2.2.1 Registering the RMCS Basic System 356
........2.2.2 Registering the Facsimile Model No. 357
........2.2.3 Deleting the Facsimile Model No. 358
........2.2.4 Updating the Password 359
........2.2.5 Updating the Dip Switches 360
........2.2.6 Deleting the RMCS Basic System 361
3. RMCS Basic Operation 362
....3.1 Activating and Terminating the system 363
........3.1.1 To Activate 364
........3.1.2 Entering the ID and Password 365
....3.2 TEL Directory 366
........3.2.1 To Terminate 367
........3.2.2 Selecting Destination Drive 368
....3.3 Main Menu 369
....3.4 Environment Setting 370
4. Message Modifying Tool 371
....4.1 Activating the Program 372
....4.2 Modifying Message 373
........4.2.1 File Selection 374
....4.3 Saving Message 375
........4.3.1 Confirmation 376
....4.4 Loading Message 377
........4.4.1 Confirmation 378
....4.5 Other Message File 379
H Product Service Bulletins
H.1 General Information 380
....OKIDATA'S Web Site 381
I Recommended Spare Parts List (RSPL)

Table of Contents Page
I. General Information 382
....OKIDATA'S Web Site 383