Oki OKIOFFICE84 User manual

40672201TH Rev. 4
OKIOFFICE84, OKIFAX 4500
Maintenance Manual
Fourth Edition
October, 1999
Oki Data Corporation

40672201TH Rev. 4
This manual is intended to be used for installing and maintaining OKIOFFICE84, OKIFAX 4500
facsimile transceiver.
Maintenance of the OKIOFFICE84, OKIFAX 4500 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 INCORRECTLY REPLACED.
REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE
MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE
MANUFACTURER'S INSTRUCTIONS
and
ATTENTION: IL Y A DANGER D'EXPLOSION S'IL Y A REMPLACEMENT INCORRECT
DE LA BATTERIE. REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MEME
TYPE OU D'UNT TYPE RECOMMANDE PAR LE CONSTRUCTEUR. METTRE AU
REBUT LES BATTERIES USA GEES CONFORMEMENT AUX INSTRUCTIONS DU
FABRICANT.
Programming procedures of the following uses's functions are not described in this maintenance
manual.
Please refer to user's guide.
• One-touch key programming
• Two-digit auto dial programming
• Group setting
• Programming mail box password
• Memory operation
ODA/OEL, INT'L MODEL NAME
© Copyright 1998 Oki Data Corporation
This manual is subject to alteration without prior notification.
PREFACE
ODA OEL/INT'L
OKIOFFICE84 OKIFAX 4500

40672201TH Rev. 4
Document Revision History
Title: OKIOFFICE84, OKIFAX 4500 Maintenance Manual
Revision
Number Revision Date Change Author
Item Comments
Jan. 30, '98
Dec. 15, '98
Apr. 26, '99
Sep. , '99
E3 Hanazawa
E3 Endo
E5 Kondo
E3 Endo
ISSUE
Proofreading
Proofreading
Correction of page 6-1 to 6-3, 6-13 and 6-25.
Correction of page A3-18, 19 and 24.
Addition of page A3-41.
Correction of page B-11.
Correction of R51 circuit diagrams, R51 parts list,
WN5 parts list (3/3), DN5 parts list (4/4), FN5 parts list
(3/3), MPW1446 circuit diagram, MPW1446 parts list,
P2H parts list (2/3) and 6L parts list (1/1).
Correction of page F-1.
Addition of Troubleshooting Manual.
Correction of illustrations and parts list.
Page D-8, 11, 12, 16, 18, 20 and 29.
Addition of Page 1-3 (item 29)
Correction of Page 1-7, 1-19, 2-17, 2-44 and 2-48
Addition of FAX2NET Function
Chapter 1
Chapter 2
Chapter 6
Appendix A
Appendix B
Appendix C
Appendix F
Appendix H
Appendix D
Chapter 1
and 2
Appendix I
1
2
3
4

1 40672201TH Rev. 4
CONTENTS
CHAPTER 1 GENERAL INFORMATION
1.1 General Performance...........................................................................................................1-1
1.2 General User's Function ...................................................................................................... 1-4
1.3 General Maintenance Functions ..........................................................................................1-7
1.4 General Appearance............................................................................................................1-8
1.5 Basic Performance Specifications .......................................................................................1-10
1.6 Reports and Lists .................................................................................................................1-19
CHAPTER 2 INSTALLATION PROCEDURE
A. Setup Information.....................................................................................................................2-1
2.1 General ................................................................................................................................2-1
2.2 Site Selection .......................................................................................................................2-3
2.3 Unpacking ............................................................................................................................2-5
2.4 Contents Identification .........................................................................................................2-7
2.5 Installation of Attachments...................................................................................................2-8
2.6 AC Cord Connection ............................................................................................................2-13
2.7 Telephone and Line Connections ........................................................................................2-14
2.8 Packing for Shipment...........................................................................................................2-14
B. Programming and Initial Settings ............................................................................................. 2-15
2.9 Initial Settings.......................................................................................................................2-15
2.9.1 General Procedure of Key Operation......................................................................2-15
2.9.2 Technical Functions ................................................................................................2-19
2.9.3 Techical Functions Example ...................................................................................2-31
2.9.4 User’s Functions .....................................................................................................2-38
2.9.5 User's Functions Example ......................................................................................2-55
2.9.6 Clock Adjustment .................................................................................................... 2-63
2.9.7 Dual Access Operation ...........................................................................................2-64
2.9.8 System Data Programming.....................................................................................2-65
2.9.9 Dial Parameters Settings ........................................................................................ 2-67
2.9.10 Off-line Tests...........................................................................................................2-71
2.9.11 On-line Tests...........................................................................................................2-73
CHAPTER 3 BRIEF TECHNICAL DESCRIPTION
3.1 Fundamentals of the Electro-Photographic Process............................................................3-2
3.2 Actual Electo-photographic Process ....................................................................................3-4
3.3 Boards and Units .................................................................................................................3-5
3.4 Overall Dimension and Mechanical Structure of OKIOFFICE84/OKIFAX 4500 ..................3-7
CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY
4. General ................................................................................................................................4-1
4.1 Precautions for Parts Replacement .....................................................................................4-1
4.2 Tools ....................................................................................................................................4-2
4.3 How to Disassemble and Reassemble ................................................................................4-2
4.3.1 LED Print Head .......................................................................................................4-6
4.3.2 ID Unit, Rear-Cover, Cover-Main and Board-NCU ............................................................... 4-7
4.3.3 Unit-048 OPE-Panel ...............................................................................................4-9
4.3.4 Separation Rubber, Roller Assembly Sensor .........................................................4-10
4.3.5 Roller Assembly-ADF, CIS (contact image sensor), Lever-PC1 and PC2.............. 4-11
4.3.6 Board-R51, Power Supply Unit, Board HV-P6L......................................................4-14
4.3.7 Printer Unit Section .................................................................................................4-15
4.3.8 Transfer Roller ........................................................................................................4-16

40672201TH Rev. 4 2
4.3.9 High-Voltage Power Supply Unit (HV-P2H) ............................................................4-17
4.3.10 Holder Assembly.....................................................................................................4-18
4.3.11 Plate Side M and Gear-Idle.....................................................................................4-19
4.3.12 Registration Roller ..................................................................................................4-20
4.3.13 Drive Shaft E (Eject) and Eject Roller .....................................................................4-21
4.3.14 Heat Assembly........................................................................................................4-22
4.3.15 Pressure Roller B (Back Up Roller) ........................................................................4-23
4.3.16 Hopping Shaft Assembly.........................................................................................4-24
4.3.17 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assembly .........................4-25
4.3.18 Printer Unit ..............................................................................................................4-26
CHAPTER 5 ADJUSTMENTS
5.1 Setting of LED Print Head Drive Time .................................................................................5-1
5.2.1 Confirmation Items...............................................................................................................5-2
5.2.2 Measurement .......................................................................................................................5-3
CHAPTER 6 CLEANING AND MAINTENANCE
6.1 Replacement of Consumable...............................................................................................6-1
6.2 Routine Inspection ...............................................................................................................6-3
6.3 Printer Counter Display/Clear ..............................................................................................6-5
6.4 Printer Counter Display/Clear ..............................................................................................6-7
6.5 Self-diagnosis Test ..............................................................................................................6-8
6.6 Sensor Calibration Test .......................................................................................................6-11
6.7 LED Test ..............................................................................................................................6-13
6.8 Tone Send Test ...................................................................................................................6-14
6.9 High-speed Modem Send Test ............................................................................................6-15
6.10 High-speed Modem Receive Test........................................................................................6-17
6.11 MF Send Test ......................................................................................................................6-18
6.12 Tone (TEL/FAX)...................................................................................................................6-19
6.13 Protocol Dump Data Printing ...............................................................................................6-20
6.14 System Reset.......................................................................................................................6-24
6.15 Service Code .......................................................................................................................6-25
CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIOFFICE84/OKIFAX
4500
7.1 Overall Troubleshooting Flow Chart ....................................................................................7-2
7.2 No LCD Operation ...............................................................................................................7-3
7.3 Alarm LED On......................................................................................................................7-4
7.4 Printing Test Failure.............................................................................................................7-5
7.5 No Local Copy .....................................................................................................................7-6
7.6 Auto Dial Failure ..................................................................................................................7-7
7.7 Transmission Problem .........................................................................................................7-8
7.8 Auto Reception Failure ........................................................................................................7-10
7.9 Reception Problem ..............................................................................................................7-11
7.10 Sensor Calibration Test .......................................................................................................7-13
7.11 LED Test ..............................................................................................................................7-14
7.12 Tone Send Test ...................................................................................................................7-15
7.13 High-speed Modem Test......................................................................................................7-16
7.14 MF Send Test ......................................................................................................................7-18
7.15 Tone (TEL/FAX) Send Test .................................................................................................7-19
7.16 No Acoustic Line Monitor .....................................................................................................7-20
7.17 Power Supply Unit ...............................................................................................................7-21
7.18 No Document Feeding .........................................................................................................7-22
7.19 Multiple Document Feeding .................................................................................................7-23
7.20 Document Skew...................................................................................................................7-24
7.21 Document Jam.....................................................................................................................7-26

3 40672201TH Rev. 4
7.22 Printer Unit ...........................................................................................................................7-27
7.22.1 Precautions .............................................................................................................7-27
7.22.2 Troubleshooting Flow Charts of Printer Unit...........................................................7-28
CHAPTER 8: DIPSWITCH SETTING TABLES
APPENDIX A: PC BOARD DESCRIPTIONS AND OPERATION
A.1.1 Unit Configuration and Block Diagram............................................................................... A1-1
A.1.2 Function of Each Unit......................................................................................................... A1-4
A.2.1 Explanation of Signal Flow................................................................................................. A2-1
A.3.1 MCNT Circuit Diagram ....................................................................................................... A3-1
A.3.2 OPE Circuit Diagram.......................................................................................................... A3-20
A.3.3 Power Supply Unit ............................................................................................................. A3-22
A.3.4 NCU Circuit Diagram ......................................................................................................... A3-26
APPENDIX B: DESCRIPTIONS OF PRINT OPERATION
B.1 Electro-photographic Processor...........................................................................................B-1
B.2 Electro-photographic Process..............................................................................................B-5
B.3 Paper Jam Detection ...........................................................................................................B-13
B.4 Toner Low Detection............................................................................................................B-15
B.5 Cover Open..........................................................................................................................B-16
APPENDIX C: CIRCUIT DIAGRAMS AND PARTS LIST
APPENDIX D: MECHANICAL EXPANDED VIEW DRAWING AND PARTS LIST
APPENDIX E: BOARDS LAYOUT
APPENDIX F: PC-LOADING
APPENDIX G: RMCS SYSTEM MANUAL (FOR MODEL 30)
APPENDIX H: TROUBLESHOOTING MANUAL
APPENDIX I: FAX2NET FUNCTION

40672201TH Rev. 4
CHAPTER 1
GENERAL INFORMATION

1 - 1 40672201TH Rev. 4
1.1 General Performance
(1) Type of appearance
• Desktop type
(2) Applicable lines
• General switched telephone network (GSTN)
• Private branch exchange (PBX)
(3) Compatibility
• ITU-T Group 3 facsimile transceiver
(4) Document width
• Max. 216 mm (NA Letter)
• Min. 148 mm (ISO A5 size)
(5) Effective reading width
• Max. 215 mm (NA Letter)
• Max. 208 mm (ISO A4 size)
(6) Scanning length
• 128 mm to 356 mm
(Length setting: Unlimited (1500mm) is also available.)
(7) Automatic document feeder (ADF)
• 20 sheets (NA Letter/A4-size: 20-1b bond/75 gm. Oki Data recommended paper)
• 15 sheets (NA Letter/A4-size: 16 to 28-1b bond/60-105 gm)
Note: NA is North America
(8) Recording paper or sheet
• 1st tray: NA Letter/NA Legal/A4-size plain paper cut
100 sheets capacity (20-1b bond*)
• 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: 203.2 mm (203.2 mm for assured quality)
• NA Legal: 203.2 mm (203.2 mm for assured quality)
• ISO A4: 203.2 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 mm (284.3 mm for assured quality)
(11) Copy stacker
• Max. 30 sheets *: Oki Data recommended paper
(12) Scanning resolution
a) Horizontal:
• 300 dot/inch
Note: In the local COPY mode at stsndard (STD) resolutions, the dpi conversion is done
from 300 dot/inch to 200 dot/inch.

40672201TH Rev. 4 1 - 2
b) Vertical:
Transmission mode: 3.85 line/mm (STD), 7.7 line/mm (FINE), 15.4 line/mm (EX.FINE)
or 300 dot/inch (EX.FINE)
COPY mode: 3.85 line/mm (STD), 7.7 line/mm (FINE) or 15.4 line/mm
(EX.FINE)
(13) Scanning method
• 2592 bits contact image sensor
(14) Recording resolution
a) Horizontal:
300 dot/inch
b) Vertical:
Variable: Automatically adjusted to the paper length.
(300 to 412 dot/inch), STD mode (3.85 to 5.06 line/mm) and FINE
mode (7.7 to 10.13 line/mm) and EX-FINE mode (15.4 to 20.24
line/mm)
Fixed: STD mode: 3.85 line/mm
FINE mode: 7.7 line/mm
EX-FINE mode : 15.4 line/mm
: 300 dot/inch
(15) Recording method
• 211.3 mm (2496 bits) or 216.7 mm (2560 bits)
(16) Minimum 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. 8 sheets per minute (at NA letter size)
(6PPM in the PC print mode if the paper width is 128 mm or less.)
(18) Pre-heating time
• Approx. 20 sec. (Standby to Print)
(19) Coding scheme
• Modified Huffman (MH)
• Modified READ (MR)
• Modified Modified READ (MMR)
(20) Modem
• ITU-T Rec. V.29: 9600 bps for use on point-to-point 4-wire leased telephone type curcuits.
• ITU-T Rec. V.27 ter: 4800 bps 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 14.4 kbps
(21) Transmission speed
• 6 sec. per sheet of ITU-T No. 1 sample document
Note: This is Phase C time at 3.85 line/mm and 14400 bps for 6 sec. in MMR code
transmission.
(22) Protocol
• ITU-T Rec. T.30
• OKI special protocols: High-speed protocol
(23) Error correction mode (ECM)

1 - 3 40672201TH Rev. 4
(24) Communication mode
• Half duplex
(25) Image memory
• Basic model: 1M byte
(26) Liquid crystal display (LCD)
• Two rows of 20 characters for operation guidance, check and various kinds of information
(27) Power source
• Nominal input voltage 120 VAC for ODA version
• Nominal input voltage 230 VAC for INT’L version
(28) MFP (Multi- Function Peripheral) functions:
PC Printer Function
PC Scanner Function
PC Fax Modem Function
Location Programing Function
Note: For details, see “Product Specification for MFP”
This function is standard in OKIOFFICE for ODA.
(29) FAX2NET functions:
• FAX over IP Function
• FAX to E-mail Function
• Virtual E-mail Function
• Web Retrieval Function
Note: For details, see Appendix I “FAX2NET Function”.