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Page: 1
Service Manual for OF5800
Chapter 0 Introduction

OKIFAX 5800 Service Manual

Adobe Acrobat printable reference copy
of the OKIDATA Service Training Manual.
08/20/98

Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with
the pictures rendered at 300 dpi, which is ideal for printing, but does not display well
on most displays.

Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Table of Contents Page

Service Manual for OF5800
1 General Description
1.1 Product Description 1
1.2 Specification and Ratings 2
1.3 Features and Functions 3
1.4 Reports 4
1.5 Scanner Specifications 5
1.6 Printer Specifications 6
1.7 Memory Specifications 7
1.8 Supply Yields 8
2 Machine Operations
2.1 Interconnect Block Diagram 9
2.2 Main Control PCB 10
2.3 Network Control Unit (NCU) PCB 11
2.4 Power Supply Unit (PSU) 12
2.5 CCD Mount PCB 13
2.6 Sensors 14
....2.6.1 Sensor Locations 15
....2.6.2 Sensor Descriptions 16
2.7 Unit Assembly 17
2.8 Document Scanning Sequence 18
....2.8.1 Document Detection 19
....2.8.2 Document Separation 20
....2.8.3. Document Transport 21
....2.8.4 Document Scanning 22
....2.8.5 Document Discharge 23
2.9 Recording Section 24
2.10 Image Processing 25
....2.10.1 Drum Charge 26
....2.10.2 Laser Exposure 27
....2.10.3 Development 28
2.10.4 Image Transfer 29
2.10.5 Fusing 30
....2.10.5.1 An Overview 31
....2.10.5.2 Fusing Temperature Control Circuit 32
2.10.6 Timing Chart 33
....2.10.6.1 Print Starting 34
2.10.6.2 Print Ending 35
2.11 Transmission Control Procedure (G3 mode) 36
2.12 Transmission Control Procedure (G3 mode, polling) 37
2.13 Transmission Control Procedure (G3, ECM Mode) 38
3 Adjustment Procedures
3.1 Field Service Program Modes 39
Table of Contents Page
3.2 Machine Parameter Adjustment 40
....3.2.1 Setting the Machine Parameters 41
....3.2.2 Clearing the Machine Parameters 42
........Machine Parameter A:0: 43
........Machine Parameter A:1 44
........Machine Parameter A:2 45
........Machine Parameter A:3 46
........Machine Parameter A:4 47
........Machine Parameter A:5~A:8 48
........Machine Parameter A:9 49
........Machine Parameter B:4 50
........Machine Parameter B:4~G:9 51
........Machine Parameter H:0 52
........Machine Parameter H:1 53
........Machine Parameter H:2 54
........Machine Parameter H:3~J:9 55
3.3 Memory Switches Adjustment 56
....3.3.1 Setting the Memory Switches 57
....3.3.2 Clearing the Memory Switches 58
3.4 Memory Switch Reference Guide 59
....Memory Switch A:2~A:4 60
....Memory Switch A:5 - Dialer 61
....Memory Switch B:0 - Transmission 62
....Memory Switch B:1 - Transmission 63
....Output attenuation 64
....Memory Switch B:2 - Transmission 65
....Memory Switch B:3~B:4 66
....Memory Switch B:5 - Transmission 67
....Memory Switch B:6~B:9 68
....Memory Switch C:0 - Reception 69
....Memory Switch C:1 - Reception 70
....Memory Switch C:2~C:9 71
....Memory Switch D:0 - Reception 72
....Memory Switch D:1- Reception 73
....Memory Switch D:2 - Reception 74
....Memory Switches D:3 75
....Memory Switch D:5~D:9 76
....Memory Switch: E:0 - Scanner 77
....Memory Switch E:1~F:9 78
....Memory Switch G:0 - Remote reception and TAD interface 79
....Memory Switch G:1 - Remote reception and TAD interface 80
....Memory Switch G:2 - Remote reception and TAD interface 81
....Memory Switch G:3 82
....Memory Switch G:4 - Remote reception and TAD interface 83
Table of Contents Page
....Memory Switch G:5~G:9 84
....Memory Switch H:0 - Operation 85
....Memory Switch H:1 - Operation 86
....Memory Switch H:2 - Operation 87
....Memory Switch H:3~H:9 88
3.5 Clear Programmed Data / User Settings 89
3.6 All RAM Clear 90
3.7 Setting Individual Autodialer Attributes 91
3.8 Unique Switchs Adjustment 92
....3.8.1 Setting the Unique Switches 93
....3.8.2 Clearing the Unique Switches 94
........Unique Switch A:0 - Dialer 95
........Unique Switch A:1~A:9 96
........Unique Swtich B:0 97
........Unique Switch B:1~B:9 98
........Unique Switch C:0 99
........Unique Switch C:1 100
........Unique Switch C:2 101
........Unique Switch C:3~C:9 102
........Unique Switch E:0 103
........Unique Switch E:1~E:9 104
........Unique Switch F:0 105
........Unique Switch F:1 106
........Unique Switch F:2 107
........Unique Switch F:3 108
........Unique Switch F:4 109
........Unique Switch F:5 and F:6 110
........Unique Switch F:7~F:9 111
........Unique Switch G:0 112
........Unique Switch G:1 113
........Unique Switch G:2~G:9 114
........Unique Switch H:0 115
........Unique Switch H:1~H:9 116
3.9 Print T.30 Monitor 117
3.10 Print Program Mode List 118
3.11 Test Modes 119
....3.11.1 Life Monitor 120
....3.11.2 Clear Life Monitor 121
....3.11.3 Printer Test 122
....3.11.4 Stamp Test 123
....3.11.5 Set Background Level 124
3.12 Print Machine Parameters, Memory Switch and Unique 125
Switch Settings
3.13 Factory Functions 126
Table of Contents Page
....3.13.1 Function List 127
....3.12.2 LED Test 128
....3.13.3 LCD Test 129
....3.13.4 LCD Test 130
....3.13.5 SRAM Check 131
....3.13.6 DRAM Check 132
....3.3.17 RTC Test 133
3.14 Line Test 134
....3.14.1 Relay Test 135
....3.14.2 Tonal Signal Test 136
....3.14.3 DTMF Output Test 137
3.15 JP1, JP2 Battery Backup 138
3.16 DRAM Memory Backup 139
4 Troubleshooting Procedures
4.1 Troubleshooting Outline 140
4.2 Recording Paper Jam 141
4.3 Recording Paper Jam 142
4.4 Document Feeder Jam 143
4.5 Document Feeder Multi-feeding 144
4.6 Transmit Errors 145
4.7 Transmit Black Lines 146
4.8 Cannot Transmit 147
4.9 Receive Errors 148
4.10 Will Not Auto-Answer 149
4.11 Clearing Jammed Paper 150
....4.11.1 Original Document Jam 151
....4.11.2 Printed document jams 152
4.12 Image Quality Problems 153
4.13 Cleaning the Unit 154
....4.13.1 Cleaning the Air Vents 155
....4.13.2 Cleaning the Document Feeder Area 156
....4.13.3 Cleaning the Transfer Roller: 157
4.14 LCD Error Messages 158
4.15 Error Codes 159
....Dialing errors 160
....Reception errors 161
....Transmission errors 162
....Communication Error Messages 163
4.16 "Please Call Service" Error 164
....4.16.1 Printer Initialization Error 165
....4.16.2 Laser Error 166
....4.16.3 Polygon Mirror Error 167
....4.16.4 Fan Motor Error 168
....4.16.5 Fuser Malfunction 169
Table of Contents Page
5 Disassembly
5.0 Disassembly 170
5.1 Document Hopper / Document Tray / Paper Hopper 171
5.2 Main Control PCB , NCU PCB, Modular PCB 172
5.3 Front Cover and Control Panel PCB / LCD 173
5.4 Scanner Assy and Scanner Frame 174
5.5 Inverter PC Board / Scanner Lamp 175
5.6 Scanner Assy A, B, C and Inter Lock Switch 176
5.7 TX Cover and Lock Lever 177
5.8 DS1 / DS2 178
5.9 Press Roller 179
5.10 Separator Roller 180
5.11 Exit Roller / Feed Roller 181
5.12 Stamp 182
5.13 TX Motor 183
5.14 Contact Glass 184
5.15 Speaker 185
5.16 Connector PCB 1 / Connector PCB 2 186
5.17 Printer I/F PCB/Printer Mechanical Controller PCB 187
5.18 Printer Unit 188
5.19 Image Transfer Unit 189
5.20 Printer Cover Unit 190
5.21 High Voltage Unit (PWB-F) 191
5.22 Paper Sensor (PS) 192
5.23 Power Supply Unit (PWB-E) 193
5.24 Heater Lamp 194
5.25 Fusing Unit 195
5.26 Thermistor 196
5.27 Paper Exit Sensor 197
5.28 Print Head Unit 198
5.29 Cassette PCB and PS/Cassette sensor 199
5.30 Pickup Roller W assy and Solenoid 200
5.31 Feed Roller W and Press Roller W 201
5.32 Bottom Stay and Cassette Frame 202
6 Illustrated Parts List
Illustrated Parts List 203
....Illustrated Part List 1: Panel/Cover/Hopper 204
....Illustrated Part List 2A (1/3): Transmission 205
....Illustrated Part List 2B (2/3): Transmission 206
....Illustrated Part List 2C (3/3): Transmission 207
....Illustrated Part List 3: Scanner Frame 208
....Illustrated Part List 4: Bottom Chassis 209
....Illustrated Part List 5: Cassette 210
....Illustrated Part List 6: Power Supply 211
Table of Contents Page
....Illustrated Part List 7: Housing 212
....Illustrated Part List 8A: Drive/Paper Take-Up Section 1 213
....Illustrated Part List 8B: Drive/Paper Take-Up Section 1 214
....Illustrated Parts List 9: Paper Take-Up Section 2 215
....Illustrated Parts List 10: Transfer Unit 216
....Illustrated Parts List 11: Fusing Unit 217
....Illustrated Parts List 12: Options 218
....Illustrated Parts List 13: Consumables 219
....Illustrated Parts List 14: Accessories 220
....Illustrated Parts List 15: Packaging 221
....Illustrated Parts List 16: Documentation (User's) 222
....Illustrated Parts List 17: Documentation (Service) 223
....Illustrated Parts List 18: Whole Product 224
7 Recommended Spare Parts List
RSPL 225
Page: 1
Service Manual for OF5800
Chapter 1 General Description

The OKIFAX 5800 is a Group 3 facsimile machine. Documents are printed on plain paper using dry
electrophotographic printing.

Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page: 2
Service Manual for OF5800
Chapter 1 General Description

Item Specifications / Comments
Type Group 3 desktop transceiver
Telephone network PSTN (Public Switched Telephone Network) or equivalent
Transmission control ITU-T T.4 and T.30
protocol
Modem 14400, 12000, 9600, 7200, 4800, and 2400 bps with
automatic fallback per ITU-T, V.17, V33, V.29, V.27ter, and
V21. Control signal speed is 300 bps.
Coding ITU-T-standard MH, MR and MMR, Murata-proprietary MSE
Communication method Half-duplex
Dual Access Allows up to three simultaneous operations
Error Correction Mode Transmit and receive
(ECM) Buffer capacity: 64 KB
Scanning method Flatbed CCD
Recording method Dry electrophotographic printer
Resolution Horizontal: 8 pels/mm (203 lpi)
Vertical: S.Fine 15.4 l/mm (392 lpi), Hyperfine 11.55 l/mm
(293 lpi), Fine 7.7 l/mm (196 lpi), Normal 3.85 l/mm (98 lpi)
Scanning width 208 mm (8.2 in)
Printing width 208 mm (8.2 in)
Document size Single sheet
Max: 280 mm (W) x 900 mm (L) (11 x 35 in)
Min: 148 mm (W) x 105 mm (L) (5.8 x 4.1 in)
Two or more sheets
Max: 257 mm (W) x 365 mm (L) (10.1 x 14.4 in)
Min: 148 mm (W) x 105 mm (L) (5.8 x 4.1 in)
Document thickness 0.06 mm to 0.13 mm
Recording paper Legal : 216 mm (W) x 356 mm (L) (8.5 x 14 in)
specifications Letter : 216 mm (W) x 279 mm (L) (8.5 x 11 in)
Recording Paper Capacity 500 sheets
Paper Cassette:
Multipurpose tray: 150 sheets
Power requirements 120 VAC