OKIDATA OF1000 User manual

Page: 1
Service Guide OF1000
Chapter 0 About This Manual
OKIFAX 1000
Facsimile Product
Adobe Acrobat printable reference
copy of the OKIDATA Service Training Manual.
09/17/97
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 view on most
displays well.
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 Guide OF1000
0 About This Manual
Front Cover 1
Manual Copyright 2
1 Product Specifications
1.1.01 General Information 3
1.2 General Facsimile Specifications 4
1.3 Communications 5
1.4 Printer Specifications 6
1.5 User Functions 7
1.6 Scanner Specifications 8
1.7 Consumable Items 9
1.8 Options 10
1.9 Agency Approvals 11
1.10 Reliability Data 12
2 Principles of Operation
2.1 Principles Of Operation 13
....2.1.01 Compatibility 14
....2.1.02 Communications Mode 15
....2.1.03 Modem Operation 16
....2.1.04 Automatic Fall-Back Mode 17
....2.1.05 Telephone Line Connection 18
....2.1.06 Error Correction Mode (ECM) 19
....2.1.07 Major Assemblies 20
........Okifax 1000 Cross-Sectional View 21
........Copy Function Block Diagram 22
........Report Print Function Block Diagram 23
2.2 Transmitter Theory Of Operation - Typical Transmission 24
....300 bps Transmit Handshake Operation Diagram 25
....300 bps Receive Handshake Procedure Diagram 26
....G3 Transmit Functional Block Diagram 27
....2.2.02 Operator Panel 28
....2.2.03 Automatic Document Feeder (ADF) 29
....2.2.04 Scanner Assembly 30
....2.2.05 Encoder 31
....2.2.06 Modem 32
....2.2.07 Network Control Board (NCU) 33
....2.2.08 Line Board 34
2.3 Receiver Theory Of Operation 35
....G3 Receive Operation Block Diagram 36
2.4 LED Printer - Principal Components 37
....2.4.02 Printer Control Board (PCNT-150) 38
....2.4.03 Power Supply Board (PWU-150) 39

Table of Contents Page
........Power Supply Block Diagram 40
....2.4.04 Sub-Power Supply Board (PSUB-150) 41
........Sub-Power Supply Board Block Diagram 42
....2.4.05 Fuser Unit 43
....2.4.06 Main Motor (Drum Motor) 44
....2.4.07 LED Array 45
....2.4.08 DC Fan 46
....2.4.09 Registration Motor 47
2.5 Printing Process - General Information 48
........Printing Process Diagram 49
....2.5.02 Hopping 50
....2.5.03 Feeding 51
....2.5.04 Charging 52
....2.5.05 Exposing 53
....2.5.06 Developing 54
....2.5.07 Transfer 55
....2.5.08 Fusing 56
....2.5.09 Cleaning 57
....2.5.10 Printing 58
2.6 Sensors And Switches 59
....Sensor Location Diagram (Top View) 60
........Detail of Sensor / Lever 61
........Paper Inlet Jam 62
........Paper Feed Jam 63
....2.6.02 Toner Low Sensor 64
3 Maintenance & Disassembly
3.1 Maintenance - General Information 65
3.2 Disassembly/Assembly Procedures 66
....3.2.01 Preliminary Items 67
....3.2.02 LED Head 68
....3.2.03 Terminal Cover Cap, Rear Cover, and Fan 69
....3.2.04 Line Board (LINE-JU) 70
....3.2.05 Package Shelf Assembly 71
....3.2.06 Network Control Unit (NCU-U) 72
....3.2.07 Main Control Board (MCNT-150) 73
....3.2.08 Printer Control Board (PCNT-150) 74
....3.2.09 Left Side Cover 75
....3.2.10 Hook Switch Board (Hook-SW) 76
....3.2.11 Power Supply Unit (PWU) 77
....3.2.12 Gear Frame Assembly 78
....3.2.13 Transmit Stepper Motor 79
....3.2.14 Gear Frame and Gears 80
....3.2.15 Memory Card (Option) 81
....3.2.16 Right Side Cover 82

Table of Contents Page
....3.2.17 Document Guide Assembly 83
....3.2.18 Speaker 84
....3.2.19 Separation Rubber Assembly 85
....3.2.20 Control Panel Assembly 86
....3.2.21 Upper Paper Guide Assembly 87
....3.2.22 Upper Feed Roller Assembly 88
....3.2.23 Pinch Roller 89
....3.2.24 Sub Pinch Roller Guide Assembly 90
....3.2.25 Paper Table Guide 91
....3.2.26 Sensor Roller Assembly 92
....3.2.27 Sub Roller Assembly 93
....3.2.28 ADF Roller Assembly 94
....3.2.29 Pinch Roller 95
....3.2.30 Document Detect Assembly (PC1) 96
....3.2.31 Read Station Sensor Assembly (PC2) 97
....3.2.32 Exit Guide 98
....3.2.33 Lower Feed Roller Assembly 99
....3.2.34 Image Sensor Assembly 100
....3.2.35 ADF Idle Gear 101
....3.2.36 Scanner Frame Assembly 102
....3.2.37 Release Guide Assembly 103
....3.2.38 Second Tray Interface Board 104
....3.2.39 Registration and Main Stepper Motors 105
....3.2.40 Eject Roller Assembly 106
....3.2.41 Manual Feed Guide Assembly 107
....3.2.42 Face-Down Stacker Cover Assembly 108
....3.2.43 Fuser Unit Assembly 109
....3.2.44 Lower Base Assembly 110
....3.2.45 Reduction and Stepper Motor Idle Gears 111
....3.2.46 Reset Levers and Pressure Roller 112
....3.2.47 Transfer Roller 113
....3.2.48 Registration Roller 114
....3.2.49 Hopping Roller Assembly 115
....3.2.50 Inlet Sensor Plates 116
....3.2.51 Outlet Sensor Plate 117
....3.2.52 Toner Sensor Plate 118
....3.2.53 Contact Assembly and Sub-Power Supply Board
(PSUB) 119
....3.2.54 Left and Right Cassette Guides and Base Assembly 120
....3.2.55 Paper Supply and Cassette Sensor Plates 121
3.3 Adjustments And Service Settings 122
........LED Intensity Rating / Dip Switch Settings Table 123
3.4 Cleaning 124
3.5 Lubrication 125

Table of Contents Page
4 Failure & Repair Analysis
4.1 Failure & Repair Analysis - Introduction 126
4.2 Troubleshooting Updates 127
4.3 Reporting Problems 128
4.4 Troubleshooting Tips 129
4.5 Repair Analysis Procedures 130
....4.5.02 RAP Index 131
........RAP 01: No LCD Display 132
........RAP 02: Alarm LED is Lit 133
........RAP 03: Local Copy Problem 134
........RAP 04: Auto-Dial Problem 135
........RAP 05: Data Transmission Problem 136
........RAP 06: Auto Reception Problem 137
........RAP 07: Reception Problem 138
........RAP 08: Self-Diagnosis Failure 139
........RAP 09: Scan Operation Test Failure 140
........RAP 10: LED Test Failure 141
........RAP 11: Tone Test Failure 142
........RAP 12: High-Speed Modem Test Failure 143
........RAP 13: Multi-Frequency Tone Test Failure 144
........RAP 14: Printer Unit Print Test Failure 145
........RAP 15: Voice Message Test Failure 146
........RAP 16: No Acoustic Line Monitor 147
........RAP 17: Document Does Not Feed 148
........RAP 18: Multiple Documents Feed 149
........RAP 19: Document Skews 150
........RAP 20: Document Jams 151
........RAP 21: Printer Unit Problems Shown On LCD Display 152
............RAP 21A: Cover Open 153
............RAP 21B: Printer Alarm 1 154
............RAP 21C: Printer Alarm 2 155
............RAP 21D: Printer Alarm 3 156
............RAP 21E: Printer Alarm 4 157
............RAP 21F: Paper Jam - Confirm and Stop 158
............RAP 21G: No Paper 159
........RAP 22: Image Problems 160
............RAP 22A: Poor Print Quality (Images Light or Blurred
as a Whole) 161
............RAP 22B: Dark Background Density 162
............RAP 22C: Printed Output is Blank 163
............RAP 22D: Vertical Black Stripes on Printed Output 164
............RAP 22E: Repetitive Spaced Marks on Printed Output 165
............RAP 22F: Vertical White Streaks on Printed Output 166
............RAP 22G: Areas Missing From Printed Output 167

Table of Contents Page
............RAP 22H: Poor Fusing 168
4.6 Local Diagnostic Testing 169
....4.6.01 Self-Diagnosis 170
....4.6.02 Scan Operation Test / CIS Calibration 171
....4.6.03 LED Test 172
....4.6.04 Tone Test 173
....4.6.05 High-Speed Modem Transmit Test 174
....4.6.06 High-Speed Modem Receive Test 175
....4.6.07 Multi-Frequency Tone Test 176
....4.6.08 Printer Unit Print Test 177
....4.6.09 Voice Message Test 178
4.7 Reports - Activity Report 179
....Service Codes List 180
....4.7.02 Protocol Dump 181
........Sample Analysis of Protocol Dump Data 182
........Facsimile Control Field Conversion Table 183
4.8 Resets 184
....4.8.01 Toner Counter Reset 185
....4.8.02 Drum Counter Reset 186
....4.8.03 Fuser Counter Reset 187
4.9 Clearing The Random Access Memory (RAM) 188
....4.10 Accessing the Technical Function Settings 189
........Technical Function (TF) Listing 190
....4.11 Telephone Answering Device (TAD) Interface 191
A Reference Charts
General Information 192
A.2 Index To Charts 193
....A.2.01 Main Control Board (MCNT-150) 194
....A.2.02 Printer Control Board (PCNT-150) 195
....A.2.03 Power Supply Board (PWU-150) 196
....A.2.04 Network Control Unit (NCU-U) 197
....A.2.05 Line Board (LINE-JU) 198
....A.2.06 Hook Switch (HOOK -150) 199
....A.2.07 Operator Panel Board (OPE-150) 200
....A.2.08 Sub-Power Supply Board (PSUB- 150) 201
....A.2.09 Second Tray Interface Board 202
B Illustrated Parts Listing
General Information & Parts Overview Diagram 203
....B.1.02 Definition of Terms 204
....B.1.03 Parts Ordering Information 205
B.2 CHARTS 206
....B.2.01 Cabinet Assembly (1 of 2) 207
....B.2.02 Cabinet Assembly (2 of 2) 208
....B.2.03 Control Panel Assembly 209

Table of Contents Page
....B.2.04 Printer Assembly (1 of 3) 210
....B.2.05 Printer Assembly (2 of 3) 211
....B.2.06 Printer Assembly (3 of 3) 212
....B.2.07 Base Assembly (1 of 2) 213
....B.2.08 Base Assembly (2 of 2) 214
....B.2.09 Scan Assembly (1 of 2) 215
....B.2.10 Scan Assembly (2 of 2) 216
....B.2.11 Scan Unit (1 of 3) 217
....B.2.12 Scan Unit (2 of 3) 218
....B.2.13 Scan Unit (3 of 3) 219
....B.2.14 Upper Paper Guide Assembly (1 of 2) 220
....B.2.15 Upper Paper Guide Assembly (2 of 2) 221
....B.2.16 Cables (1 of 2) 222
....B.2.17 Cables (2 of 2) 223
....B.2.18 Options 224
....B.2.19 Packaging 225
....B.2.20 Consumables 226
....B.2.21 Documentation 227

Page: 2
Service Guide OF1000
Chapter 0 About This Manual
This document may not be reproduced without written permission of the Okidata® Technical
Training Group. 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.
© 1994 by Okidata All rights reserved.
P/N 59261201 First Edition August, 1993
P/N 59261202 First Edition July, 1994
Written and produced by the Okidata Technical Training Group
Please address any comments on this publication to:
Okidata
Technical Training Group
532 Fellowship Road
Mount Laurel, NJ 08054-3499
Facsimile Number: [phone], ext. 7034
Okilink Login Name: Technical Training
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.
OKIFAX® is a registered trademark of Oki Electric Industry Company, Ltd.
Touch-Tone® is a registered trademark of American Telephone and Telegraph
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: 3
Service Guide OF1000
Chapter 1 Product Specifications
1.1.01 General Information
The Okifax 1000 is a Group 3 facsimile unit which utilizes an LED page printer engine to produce a plain
paper, permanent copy of received data. The unit can store 85 auto dial locations and has 15 one touch
programmable keys. Scanning is accomplished by the direct contact image sensor method. The image
sensor consists of 1,728 elements. The Okifax 1000 has a scanning width of up to 8.5 inches.
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: 4
Service Guide OF1000
Chapter 1 Product Specifications
1.2 GENERAL FACSIMILE SPECIFICATIONS
1.2.01 Style
· Desktop
1.2.02 Compatibility
· CCITT Group 3 ONLY
1.2.03 Physical Dimensions
· Width
16.1 inches ( Approximately 410 mm)
· Depth
16.4 inches (Approximately 417 mm )
· Height
8.38 inches (Approximately 212.8 mm)
· Weight
26.5 pounds (Approximately 12 kg)
1.2.04 Ambient Temperature and Relative Humidity (RH)
· Operation
50° to 90° F
10° to 30° C
20 to 80% RH
· Storage
-20° to 43° C
-4° to 109° F
Temperature Conversion Formulas
F° to C°:
C°= (F°-32) * .5556
C° to F°:
F°= (C°* 1.8) +32
1.2.05 Power Requirement
· 115 vac
1.2.06 Power Consumption
Mode Typical Power
Transmit 40W
Receive 120W
Local Copy (All black) 118W (580W**)
Local Copy 125W
Standby 35W
** Peak Power when the input voltage is 120V.

1.2.07 LCD Display
· 2-line by 20 digit display
1.2.08 Memory
· Standard Memory
256 Kbytes (up to 14 pages of CCITT No.1 Sample Document)
· Optional Expansion Memory
1 Mbyte (up to 64 pages of CCITT No.1 Sample Document)
1.2.09 Copy Mode Resolution
· Fixed at 200 lines per inch
1.2.10 Warm-up Time
· From power On until printer is ready
Maximum of 120 seconds
1.2.11 Receive Options
· Auto Receive
· Manual Receive
· Tel/Fax Receive
· Telephone Answering Device (TAD) Mode
· No Paper Receive
· No Toner Receive
1.2.12 Transmit Document Specifications
· Document Width
Minimum 5.8 inches
Maximum 8.5 inches
· Document Length
Minimum 5 inches (single page), 5.8 inches (multi-page document)
Maximum 14 inches, or unlimited length for 1 hour
· Document Weight Range
16 pounds to 24 pounds
· Desired opacity
Less than 40 % of the scanner source light should be able to pass
through the paper.
1.2.13 Automatic Document Feeder (ADF) Capacity
· 30 sheets (20 pound bond)
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: 5
Service Guide OF1000
Chapter 1 Product Specifications
1.3 COMMUNICATIONS
1.3.01 Telephone Line Compatibility
· PSTN (public switched telephone network)
· PBX (private branch exchange)
1.3.02 Communication Mode
· Half Duplex
1.3.03 Protocol
· CCITT Recommendation T.30
· Oki Special Protocol
In multi-document reception, the local unit can start transmitting
the modem training bits immediately after transmitting end of
message (EOM) and upon reception of message confirmation (MCF)
from the remote unit, instead of repeating all procedures (which takes
about six seconds).
· Oki Special High Speed
The T.30 handshake is conducted at message transmission speed
(instead of 300 bps) during multi-page transmission.
1.3.04 Line Interface
· Impedance 600 ohms balanced
· Send Power Level
0 dbm to -15 dbm (can be adjusted in 1 dbm steps by modifying TF #21)
1.3.05 Ring Signal Detection Sensitivity
· Voltage Range25 to 150 r.m.s.
· Frequency Range
15 to 68 Hz (with 44 to 56 volts superimposed)
· Ring Signal Detection Time
One Ring Signal
or
Adjustable between 5 and 30 seconds, in 5 second increments
Refer to User Function 24 (optional second tray installed)
Refer to User Function 23 (optional second tray NOT installed)
· Ring Signal Voltage Duration
Longer than 180 milliseconds (inoperative if duration is
90 milliseconds or less)
1.3.06 Coding Schemes
· Modified Huffman (MH) Only
· Modified-Modified Read (MMR)
· Modified Huffman (MH)

1.3.07 Error Correction Methods
· CCITT Error Correction Mode (ECM)
· Page Re-transmission (Memory Mode / ECM Off)
1.3.08 High Speed Modem
· CCITT Recommendation V.29 (9600/7200 bps)
· CCITT Recommendation V.27 Ter. (4800/2400 bps)
1.3.09 Low Speed Modem
· CCITT Recommendation V.21 Channel 2 (300 bps)
1.3.10 Transmission Time
· 10 seconds CCITT No. 1 sample document at 9600 bps
1.3.11 Transmit Resolution
· Horizontal 8 PELs per mm
(PEL = Picture ELement)
· Vertical STD
3.85 lines per mm or 98 lines per inch
FINE
7.7 lines per mm or 196 lines per inch
Ex.FINE
15.4 lines per mm or 392 lines per inch
1.3.12 Photo/Half Tone Transmit Resolution
· 32 Levels (using error diffusion)
1.3.13 Ringer Equivalent Number
· 0.68
1.3.14 Transmit Dialing Methods
· Auto Dialing 70 two-digit auto dial codes
· One Touch Dialing
15 one-touch keys)
· Off Hook Dialing
· On Hook Dialing
· Broadcasting Group Dial
1.3.15 Receive Mode
· Auto Receive Dedicated fax machine
· Manual Receive
Telephone manual switch to fax mode
· Tel\Fax Auto Switching
Telephone will auto switch to fax mode
· TAD Interface

1.3.16 Broadcast Transmit Capabilities
· Maximum: 85 locations in one session
1.3.17 TSI/CSI
· Maximum: 20 characters are displayed. If the function is enabled, the
received TSI is marked at the top of the first reproduced copy.
NOTE:
FEDERAL COMMUNICATIONS COMMISSION
TELEPHONE CONSUMER PROTECTION ACT
Part 68 Implementation of the Telephone Consumer Protection Act states:
" The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a
computer or other electronic device to send any message via a telephone fax machine unless
such message clearly contains in a margin at the top or the bottom of each transmitted page, or
on the first page of the transmission, the date and time it is sent and an identification of the
business, other entity, or individual sending the message and the telephone number of the
sending machine of such business, other entity or individual."
To comply with this law, the End-User must:
1. Enter the DATE and TIME into the Okifax 1000
2. Enter the NAME and TELEPHONE NUMBER to identify the source
of their facsimile transmission.
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: 6
Service Guide OF1000
Chapter 1 Product Specifications
1.4 PRINTER SPECIFICATIONS
1.4.01 Print Method
· Development Dry electro-photography
· Exposure Stationary LED head
1.4.02 Print Speed
· Continuous Print
4 sheets per minute (letter size)
· Warm-up TimePower-ON (Cold): approximately 120 seconds
Idle: approximately 15 seconds
1.4.03 Receive Paper Sizes
· Letter
8.5 inches x 11.0 inches
· Legal (Option)
8.5 inches x 14.0 inches
1.4.04 Receive Paper Types
· 20 pound Bond Paper
1.4.05 Copy Stacking
· The Okifax 1000 stacks the printed output printed side down.
Face-down Stacker Capacity: 100 sheets
1.4.06 Paper Cassette Capacity
· First Cassette 100 sheets
· Second Cassette (Option)
250 sheets
1.4.07 One-Line Minimum Print Time
· Standard Resolution
10 milliseconds per line
· Fine Resolution
5 milliseconds per line
1.4.08 Contrast Selection
· Normal
· Light
· Dark

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: 7
Service Guide OF1000
Chapter 1 Product Specifications
1.5 USER FUNCTIONS
1.5.0l Transmit Mode
· Auto transmit mode
The Okifax 1000 begins sending messages after detecting
the remote stations answer.
· Manual transmit mode
The operator presses the Start Key after an answer tone has been
heard.
1.5.02 Receive Mode
· Auto Receive Mode
· Manual Receive Mode
· Telephone / Fax Automatic Switch
· TAD Interface
1.5.03 Absent Mode Auto Timer
· This feature enables switching to the auto receive mode at a specified time.
1.5.04 Group Dial
· One group of up to 85 locations
1.5.05 Telephone Directory and Location ID
· In addition to telephone numbers, an alphanumeric name can be assigned to
each of the numbers. This alphanumeric name is called the Location ID and can
contain up to 15 characters.
1.5.06 Voice Request
· A voice request from the transmitter is available only upon completion of the
total message transmission.
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: 8
Service Guide OF1000
Chapter 1 Product Specifications
1.6 SCANNER SPECIFICATIONS
1.6.01 Scanning Method
· 1728 bit contact image sensor
1.6.02 Effective Reading Width
· Maximum: 8.5 inches
1.6.03 Scanning Resolution
· Horizontal 8 PELs per mm (PEL= Picture ELement) - approximately 200 PELs
per inch
· Vertical 3.85 lines per mm or 98 lines per inch (STD)
7.7 lines per mm or 196 lines per inch (FINE)
15.4 lines per mm or 392 lines per inch (Ex.FINE)
1.6.04 Automatic Document Feeder
· Maximum 30 sheets of 8.5 x 11 inch, 20 pounds bond paper
NOTE:
Documents must be placed face down on the ADF document guide.
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: 9
Service Guide OF1000
Chapter 1 Product Specifications
1.7 CONSUMABLE ITEMS
1.7.01 Toner Cartridge Kit
· Toner Cartridge
· LED Lens Cleaner Pad
1.7.02 Image Drum Cartridge Kit
· Image drum
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: 10
Service Guide OF1000
Chapter 1 Product Specifications
1.8 OPTIONS
1.8.01 Letter / Legal / Universal Paper Tray
· 100 sheet capacity
· Adjustable sizing capability (letter, legal, universal)
1.8.02 Second Tray Unit (ST-250)
· 250 sheet capacity
1.8.03 Memory Expansion Kit
· 1 MByte Memory Card
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)