Oki OF5600 User manual

All specifications are subject to change without notice.
Service Manual
OKIFAX 5300/5600
59278301

Disclaimer
This document may not be reproduced without the written permission of OKIDATA Training and
Publications. Evert 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 1997 by OKIDATA. All rights reserved.
First Release P/N 59278301 September, 1997
Written by OKIDATA Training and Publications
Contact Information
Please address any comments on this publication to:
Mailing Address OKIDATA
532 Fellowship Road
Mount Laurel, NJ 08054-3499
Web Site www.OKIDATA.com
Telephone [phone]
Facsimile [phone]
OKILINK Login Name Technical Training
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.
Faxable Facts is a trademark, All Rights Reserved, 1993
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

Table of Contents TOC - 1 OKIFAX 5300/5600
Service Manual, P/N 59278301
Contents
Section 1: General Information ............................................................... 1 - 1
1.1 General Performance ............................................................................................1 - 1
(01) Type of appearance ......................................................................................1 - 1
(02) Applicable lines .............................................................................................1 - 1
(03) Compatibility..................................................................................................1 - 1
(04) Document width ............................................................................................1 - 1
(05) Effective reading width ..................................................................................1 - 1
(06) Scanning length ............................................................................................1 - 1
(07) Automatic document feeder (ADF)................................................................1 - 1
(08) Recording paper or sheet..............................................................................1 - 1
(09) Printable width...............................................................................................1 - 1
(10) Printable length .............................................................................................1 - 1
(11) Copy stacker .................................................................................................1 - 1
(12) Scanning resolution.......................................................................................1 - 2
(13) Scanning method ..........................................................................................1 - 2
(14) Recording resolution .....................................................................................1 - 2
(15) Recording method.........................................................................................1 - 2
(16) Minimum scan line time for reception............................................................1 - 2
(17) Print speed ....................................................................................................1 - 2
(18) Preheating time .............................................................................................1 - 2
(19) Coding scheme .............................................................................................1 - 2
(20) Modem ..........................................................................................................1 - 3
(21) Transmission speed ......................................................................................1 - 3
(22) Protocol .........................................................................................................1 - 3
(23) Error correction mode (ECM) ........................................................................1 - 3
(24) Communication mode ...................................................................................1 - 3
(25) Memory capacity ...........................................................................................1 - 3
(26) Liquid crystal display (LCD) .........................................................................1 - 3
(27) Power source ................................................................................................1 - 3
(28) MFP (Multi- Function Peripheral) function (Option).......................................1 - 3
1.2 General User's Function........................................................................................1 - 4
(01) Transmit mode ..............................................................................................1 - 4
(02) Receive mode ...............................................................................................1 - 4
(03) Dual access...................................................................................................1 - 4
(04) Voice request ................................................................................................1 - 4
(05) Automatic redial ............................................................................................1 - 4
(06) Last number redial (Manual redial) ...............................................................1 - 4
(07) Local copy including multiple copies .............................................................1 - 4
(08) Sender identification (Sender ID) ..................................................................1 - 4
(09) Personal identification (Personal ID).............................................................1 - 4
(10) Polling transmission ......................................................................................1 - 4

Table of Contents TOC - 2 OKIFAX 5300/5600
Service Manual, P/N 59278301
(11) Polling reception............................................................................................1 - 4
(12) Acoustic line monitor .....................................................................................1 - 4
(13) Telephone handset (option)...........................................................................1 - 4
(14) Automatic alternate selecting call..................................................................1 - 4
(15) Delayed transmission....................................................................................1 - 4
(16) Relay broadcast initiate.................................................................................1 - 4
(17) Confidential message transmission (Hopper 1 station).................................1 - 4
(18) Confidential message reception....................................................................1 - 4
(19) PHOTO mode................................................................................................1 - 4
(20) G3 sequential broadcast (Memory)...............................................................1 - 5
(21) No paper/no toner reception .........................................................................1 - 5
(22) Memory-only reception..................................................................................1 - 5
(23) Distinguishing Text from picture ....................................................................1 - 5
(24) Page retransmission .....................................................................................1 - 5
(25) Reduction printing .........................................................................................1 - 5
(26) Smoothing printing ........................................................................................1 - 5
(27) Programmed key operation...........................................................................1 - 5
(28) Auto dialing ...................................................................................................1 - 5
(29) Realtime dialing.............................................................................................1 - 5
(30) Automatic pause signal insertion ..................................................................1 - 5
(31) Manual feeder local copy ..............................................................................1 - 5
(32) Telephone directory (Alpha search) dialing ...................................................1 - 5
(33) TEL/FAX automatic switching .......................................................................1 - 5
(34) Time and date printing...................................................................................1 - 5
(35) Closed users group (Direct mail rejection) ....................................................1 - 5
(36) Transmission contrast and resolution control................................................1 - 5
(37) Key touch tone ..............................................................................................1 - 6
(38) Printer counter display (For drum, toner, total print)......................................1 - 6
(39) Total page counter (Scan) .............................................................................1 - 6
(40) Quick scanning..............................................................................................1 - 6
(41) Date and clock adjustment............................................................................1 - 6
(42) PC interface ..................................................................................................1 - 6
(43) Language selection .......................................................................................1 - 6
(44) Fax forwarding...............................................................................................1 - 6
(45) Reports..........................................................................................................1 - 6
1.3 General Maintenance Functions ...........................................................................1 - 6
(01) Self-diagnosis................................................................................................1 - 7
(02) Sensor calibration (Adjustment of scanning level) ........................................1 - 7
(03) LED test.........................................................................................................1 - 7
(04) Tone send test...............................................................................................1 - 7
(05) Multi-frequency (MF) send test......................................................................1 - 7
(06) High-speed modem send test .......................................................................1 - 7
(07) High-speed modem receive test ...................................................................1 - 7
(08) Tone (TEL/FAX) test......................................................................................1 - 7
(09) Remote diagnosis .........................................................................................1 - 7
(10) System reset .................................................................................................1 - 7
(11) Service default report (Machine setting for service engineer).......................1 - 7

Table of Contents TOC - 3 OKIFAX 5300/5600
Service Manual, P/N 59278301
1.4 General Appearance .............................................................................................1 - 7
General Appearance of OKIFAX 5300/5600 (Figure 1.4.2)...................................1 - 9
1.5 Basic Performance Specifications (Table 1.5.1)....................................................1 - 9
01 Applicable line ..........................................................................................1 - 10
02 Line interface ............................................................................................1 - 10
03 Type of document to be transmitted .........................................................1 - 10
04 Effective reading width ............................................................................. 1 - 11
05 Automatic document feeder (ADF) ...........................................................1 - 11
06 Document skew ........................................................................................ 1 - 11
07 Document jam detection...........................................................................1 - 12
08 Document jam removal.............................................................................1 - 12
09 Recording paper or sheet .........................................................................1 - 13
10 Recording paper cassette.........................................................................1 - 14
11 Effective recording area............................................................................1 - 15
12 Copy stacking ...........................................................................................1 - 16
13 Scanning resolution ..................................................................................1 - 16
14 Image scanning method ...........................................................................1 - 16
15 Contrast control ........................................................................................1 - 16
16 Recording resolution.................................................................................1 - 16
17 Recording system.....................................................................................1 - 16
18 Skew of recording paper...........................................................................1 - 16
19 Copy darkness..........................................................................................1 - 17
20 Copy uniformity.........................................................................................1 - 17
21 Recording paper runs out .........................................................................1 - 17
22 Minimum scan line time for receiving .......................................................1 - 17
23 Coding scheme.........................................................................................1 - 17
24 MODEM....................................................................................................1 - 17
25 Fallback ....................................................................................................1 - 18
26 Protocol ....................................................................................................1 - 19
27 Transmission time.....................................................................................1 - 19
28 Error correction.........................................................................................1 - 19
29 Communication mode...............................................................................1 - 19
30 Ringing signal detection sensitivity...........................................................1 - 19
31 Image memory..........................................................................................1 - 20
32 Telephone handset (option) ......................................................................1 - 20
34 Overheat protection ..................................................................................1 - 20
35 PC Interface Applications (Option) ...........................................................1 - 21
36 Power supply unit and power consumption of the machine .....................1 - 21
37 Ambient condition .....................................................................................1 - 22
Ambient Conditions (Figure 1.5.1)............................................................1 - 22
38 Dimensions...............................................................................................1 - 23
39 Weight ......................................................................................................1 - 23
40 Attachments..............................................................................................1 - 23

Table of Contents TOC - 4 OKIFAX 5300/5600
Service Manual, P/N 59278301
1.6 Reports and Lists (Table 1.6.1) ..........................................................................1 - 24
01 Call-back message ...................................................................................1 - 24
02 Sender ID .................................................................................................1 - 24
03 Transmitting subscriber identification (TSI) printing..................................1 - 24
04 Cancel report (Power outage report) ........................................................1 - 24
05 Activity report............................................................................................1 - 24
06 Message confirmation report ....................................................................1 - 24
07 Broadcast entry report ..............................................................................1 - 24
08 Broadcast confirmation report ..................................................................1 - 24
09 Confidential reception report ....................................................................1 - 25
10 Telephone directory ..................................................................................1 - 25
11 Configuration report..................................................................................1 - 25
Call-back Message (Example) ..........................................................................1 - 26
Sender ID Format: (Example) ...........................................................................1 - 26
TSI Printing (Example) ......................................................................................1 - 27
Local Date and Time Printing (Example)...........................................................1 - 27
Power Outage Report (Example) ......................................................................1 - 29
Activity Report (Example)..................................................................................1 - 30
Explanation of Example............................................................................1 - 31
Message Confirmation Report.............................................................................1 - 32
Example 1 of 2..........................................................................................1 - 32
Explanation of Example............................................................................1 - 33
Example 2 of 2..........................................................................................1 - 33
Broadcast Entry Report (Example)....................................................................1 - 34
Broadcast Confirmation Report (Example)........................................................1 - 35
Confidential Reception Report (Example) ..........................................................1 - 35
Telephone Directory for OKIFAX 5300 ................................................................1 - 36
Example 1 of 4..........................................................................................1 - 36
Example 2 of 4..........................................................................................1 - 37
Example 3 of 4..........................................................................................1 - 38
Example 4 of 4..........................................................................................1 - 39
Telephone Directory for OKIFAX 5600 ................................................................1 - 40
Example 1 of 6..........................................................................................1 - 40
Example 2 of 6..........................................................................................1 - 41
Example 3 of 6..........................................................................................1 - 42
Example 4 of 6..........................................................................................1 - 43
Example 5 of 6..........................................................................................1 - 44
Example 6 of 6..........................................................................................1 - 45
Configuration Report (User) [Service Bit OFF]...................................................1 - 46
Configuration Report (Service) [Service Bit ON] ..............................................1 - 47

Table of Contents TOC - 5 OKIFAX 5300/5600
Service Manual, P/N 59278301
Section 2: Installation Procedures ......................................................... 2 - 1
2.1 General..................................................................................................................2 - 2
2.2 Site Selection ........................................................................................................2 - 4
Precautions for Installation ....................................................................................2 - 4
(01) Fluctuation in line voltage .............................................................2 - 4
(02) Room temperature ........................................................................2 - 4
(03) Humidity ........................................................................................2 - 4
(04) Operating environment .................................................................2 - 4
(05) Exposure .......................................................................................2 - 4
(06) Levelness of installation surface ...................................................2 - 4
(07) Other requirements .......................................................................2 - 4
(08) Required space for installation......................................................2 - 4
2.3 Unpacking .............................................................................................................2 - 6
2.3.1Procedure......................................................................................................2 - 6
Unpacking Procedure 1 (Figure 2.3.1.1) ....................................................2 - 6
Unpacking Procedure 2 (Figure 2.3.2.1) ....................................................2 - 7
Unpacking Procedure 3 (Figure 2.3.2.2) ....................................................2 - 8
2.4 Check of Contents.................................................................................................2 - 9
Contents List (Table 2.4.2) ....................................................................................2 - 9
2.5 Installation of Attachments ..................................................................................2 - 10
(01) Items............................................................................................................2 - 10
(02) Procedure....................................................................................................2 - 10
Toner Cartridge Installation (Figure 2.5.2.1) .............................................2 - 10
Toner Cartridge Installation 2 (Figure 2.5.2.2) ..........................................2 - 10
Toner Cartridge Installation 3 (Figure 2.5.2.3) .......................................... 2 - 11
Toner Cartridge Installation 4 (Figure 2.5.2.4) .......................................... 2 - 11
Toner Cartridge Installation 5 (Figure 2.5.2.5) ..........................................2 - 12
Recording Paper Cassette Installation 1 (Figure 2.5.2.6).........................2 - 13
Recording Paper Cassette Installation 2 (Figure 2.5.2.7)........................2 - 13
Document Stacker Installation Figure 2.5.2.8...........................................2 - 14
2.6 AC Cord Connection ...........................................................................................2 - 15
2.7 Telephone and Line Connections ........................................................................2 - 16
Telephone and Line Connections (Figure 2.7.1).......................................2 - 16
2.8 Packing for Shipment ..........................................................................................2 - 17
2.9 Initial Settings ......................................................................................................2 - 18
2.9.1Key Operation Flowchart (Figure 2.9.1) ......................................................2 - 18
2.9.2Technical Functions.....................................................................................2 - 23
01 Service bit .....................................................................................2 - 24
02 Line monitor control.......................................................................2 - 24
03 Country code.................................................................................2 - 24
04 Time and date print .......................................................................2 - 24
05 TSI print.........................................................................................2 - 25
06 No-toner memory reception ..........................................................2 - 25
07 TAD mode .....................................................................................2 - 26
08 Real time dialing............................................................................2 - 26
09 TEL/FAX switching........................................................................2 - 27

Table of Contents TOC - 6 OKIFAX 5300/5600
Service Manual, P/N 59278301
10 MDY/DMY .....................................................................................2 - 27
11 Long document SCAN ..................................................................2 - 27
12 Echo Protection.............................................................................2 - 27
13 MH only.........................................................................................2 - 28
14 High-speed modem rate................................................................2 - 28
15 T1 (TX), timeout value...................................................................2 - 28
16 T1 (RX), timeout value ..................................................................2 - 28
17 T2, timeout value...........................................................................2 - 28
18 DIS bit 32 ......................................................................................2 - 29
19 Error criterion ................................................................................2 - 29
20 Off-hook bypass............................................................................2 - 29
21 NL equalizer ..................................................................................2 - 29
22 Modem attenuator.........................................................................2 - 29
23 T/F tone attenuator (for TEL/FAX SW)..........................................2 - 30
24 MF attenuator................................................................................2 - 30
25 Ring duration detection time .........................................................2 - 30
26 CML timing ....................................................................................2 - 30
27 Strobe for LED head .....................................................................2 - 31
28 Head width ....................................................................................2 - 32
29 Media type.....................................................................................2 - 32
30 Not used........................................................................................2 - 32
31 Symbol rate...................................................................................2 - 32
TAD Mode (Technical Function 07) ..........................................................2 - 33
TAD Mode Flowchart (Type 1) ....................................................2 - 34
TAD Mode Flowchart (Type 2) ....................................................2 - 35
TEL/FAX Automatic Switching (Technical Function 09)............................2 - 36
TEL/FAX Mode Flowchart ...........................................................2 - 37
2.9.3 Technical Functions Example ...................................................................2 - 38
Setting the Service Bit ..............................................................................2 - 38
Accessing the Technical Functions...........................................................2 - 39
Technical Functions 01 to 11 (Table 2.9.2)..............................................2 - 40
Technical Functions 12 to 16 (Table 2.9.2)..............................................2 - 41
Technical Functions 17 to 23 (Table 2.9.2)..............................................2 - 42
Technical Functions 24 to 27 (Table 2.9.2).............................................2 - 43
Technical Functions 28 to 31 (Table 2.9.2).............................................2 - 44

Table of Contents TOC - 7 OKIFAX 5300/5600
Service Manual, P/N 59278301
2.9.4 User’s Functions.......................................................................................2 - 45
Feature Specifications (Table 2.9.3) .........................................................2 - 46
01 Auto dial ........................................................................................2 - 46
02 Manual dial....................................................................................2 - 46
03 Receive mode ...............................................................................2 - 47
04 Automatic redial ............................................................................2 - 47
05 Last No. redial...............................................................................2 - 47
06 Group dial......................................................................................2 - 47
07 Telephone directory and Location ID (Alpha Search) ...................2 - 48
08 Voice request ................................................................................2 - 48
09 Local copy.....................................................................................2 - 48
10 Multiple local copy.........................................................................2 - 48
11 Manual loading feeder...................................................................2 - 48
12 Broadcast (Memory transmission) ................................................2 - 49
13 Delayed transmission from the memory........................................2 - 49
14 Polling transmission (To be polled) ...............................................2 - 49
15 Polling reception............................................................................2 - 49
16 Transmission preparation (Hopper) .............................................2 - 49
17 No toner reception.........................................................................2 - 50
18 Smooth printing.............................................................................2 - 50
19 Dual Access ..................................................................................2 - 51
Dual Access Combination Table (1/2) .........................................2 - 52
Dual Access Combination Table (2/2) .........................................2 - 53
2)-1 One-Touch Key Program Settings.................................................2 - 55
Flowchart.....................................................................................2 - 55
One-Touch Key Program Settings (Table 2.9.4) .........................2 - 56
01 Delayed transmission (Tx) ..................................................2 - 56
02 Broadcast/memory transmission.........................................2 - 56
03 Confidential transmission....................................................2 - 56
04 Relay broadcast initiate transmission .................................2 - 56
05 Polling transmission/reception ............................................2 - 56
06 Report printing ....................................................................2 - 56
07 Counter display (clear)........................................................2 - 57
08 Location program ................................................................2 - 57
09 User’s programs..................................................................2 - 58
10 Print operation.....................................................................2 - 59
2)-2 Function Program..........................................................................2 - 60
User Function Program Settings (Table 2.9.4)............................2 - 60
01 Message confirmation report (Single location)....................2 - 60
02 Message confirmation report (Multiple locations) ...............2 - 60
03 Error report (MCF) ..............................................................2 - 60
04 Image in MCF .....................................................................2 - 60
05 Sender ID............................................................................2 - 60
06 Line monitor volume............................................................2 - 60
07 Buzzer volume ....................................................................2 - 61

Table of Contents TOC - 8 OKIFAX 5300/5600
Service Manual, P/N 59278301
08 Closed network ...................................................................2 - 61
09 TX mode default..................................................................2 - 61
10 Telephone/fax automatic switchover time ...........................2 - 61
11 Ring response time .............................................................2 - 62
12 Distinct ring .........................................................................2 - 62
13 1’st cassette paper size ......................................................2 - 62
14 2’nd cassette paper size (option) ........................................2 - 62
15 User language.....................................................................2 - 62
16 Incoming ring ......................................................................2 - 62
17 Remote receive...................................................................2 - 63
18 Memory and feeder switch..................................................2 - 63
19 Power save mode ...............................................................2 - 63
20 ECM function ......................................................................2 - 63
21 Remote diagnosis ...............................................................2 - 63
22 PC/FAX switch ....................................................................2 - 63
23 One-touch key parameters .................................................2 - 63
2.9.5 User's Functions Example........................................................................2 - 65
1) Accessing the User's Functions ..................................................2 - 65
User's Functions 01 to 12 (Table 2.9.5, 1 of 2) ..........................2 - 66
User's Functions 03 to 23 (Table 2.9.5. 2 of 2) ..........................2 - 67
Notes for Table 2.9.5...................................................................2 - 68
2) Ring response time .....................................................................2 - 69
3) Dial parameters (Service Bit "OFF") ..........................................2 - 70
2.9.6 Clock Adjustment......................................................................................2 - 71
2.9.7 Dual Access Operation .............................................................................2 - 73
2.9.8 System Data Programming ......................................................................2 - 74
2.9.9 Dial Parameters Settings..........................................................................2 - 76
(1) Procedure (Service Bit "ON")......................................................2 - 76
Dial Parameters Settings (Table 2.9.6).....................................................2 - 79
2.9.10 Off-line Tests.............................................................................................2 - 80
Self-Diagnosis Print Test (Example) Fig. 2.9.4........................................2 - 81
2.9.11 On-line Tests.............................................................................................2 - 83
Typical Transmission Flow (Fig. 2.9.5)....................................................2 - 84
Typical Reception Flow (Fig. 2.9.6).........................................................2 - 85
2.10 Installation of Optional Units................................................................................2 - 86
1. Memory Board ..........................................................................................2 - 87
2. CTR (PC interface) board.........................................................................2 - 88
3. Optional Telephone Set ............................................................................2 - 90
4. Second Paper Cassette Unit ....................................................................2 - 93

Table of Contents TOC - 9 OKIFAX 5300/5600
Service Manual, P/N 59278301
Section 3: BriefTechnical Description ...................................................3 - 1
3.1 Fundamentals of the Electro-Photographic Process .............................................3 - 1
Electro-photographic Process Flow.......................................................................3 - 3
3.2 Actual Electo-photographic Process (Figure 3.2.1)...............................................3 - 5
3.3 Boards and Units...................................................................................................3 - 6
Block Diagram (Figure 3.3.2) ................................................................................3 - 7
3.4 Overall Dimension and Mechanical Structure .......................................................3 - 8
Section 4: Disassembly ........................................................................... 4 - 1
4.1 General..................................................................................................................4 - 1
4.1.1 Precautions for Parts Replacement............................................................4 - 1
4.2.2 Tools ...........................................................................................................4 - 2
4.2.3 How to Disassemble and Reassemble.......................................................4 - 3
Disassembly Procedure Flow (Figure 4.2) 1 of 2 ......................................4 - 4
Disassembly Procedure Flow (Figure 4.2) 2 of 2 ......................................4 - 5
4.2.3.1 LED Print Head .............................................................................4 - 7
4.2.3.2 Image Drum, Covers (Rear, NCU, Main) Separation Plate, Boards
(NCU, Modem)..............................................................................4 - 8
4.2.3.3 Control Panel Assembly, Paper Guide (U) Assembly..................4 - 10
4.2.3.4 Sub-roller, ADF Roller Assembly, Pinch Roller, Contact Image Sen-
sor, Document Detectors (PC1 and PC2). ..................................4 - 12
4.2.3.5 Motors (Resist, Drum), Assemblies (Release Guide, Manual Guide)
Stacker Cover, Fusing Unit .........................................................4 - 14
4.2.3.6 Lower Base, Motor Assembly, Back-up Roller, Transfer Roller...4 - 16
4.2.3.7 Resist Roller, Hopping Roller, Sensor Plates..............................4 - 18
4.2.3.8 MCNT Board, Power Supply Unit, ContactAssembly, Transformer,
Sub-PSU .....................................................................................4 - 20
Section 5: Adjustments ........................................................................... 5 - 1
5.1 Setting of LED Print Head Drive Time ...................................................................5 - 1
Setting of Technical Function No. 27 (Table 5.1.1)................................................5 - 1
5.2 Confirmation Items ................................................................................................5 - 3
5.3 Measurement ........................................................................................................5 - 4
Measurement Points on M17 Board (Figure 5.3.1) ...............................................5 - 5
Section 6: Cleaning and Maintenance.................................................... 6 - 1
6.1 Consumables Replacement ..................................................................................6 - 1
User Replaceable Items Life ................................................................................6 - 1
Service Parts Life ..................................................................................................6 - 1
Replaceable Items Diagram (Figure 6.1.2) ...........................................................6 - 1
Others....................................................................................................................6 - 3
Reliability Table (6.1.1.) ..............................................................................6 - 3
Preventative Maintenance (Table 6.2.2)................................................................6 - 4

Table of Contents TOC - 10 OKIFAX 5300/5600
Service Manual, P/N 59278301
6.2 Preventative Maintenance.....................................................................................6 - 4
Preventative Maintenance Diagram (Figure 6.2.2).....................................6 - 5
6.3 Printer Counter Display/Clear (User).....................................................................6 - 6
6.4 Printer Counter Display/Clear (Service) ................................................................6 - 7
6.5 Self-Diagnosis Test................................................................................................6 - 9
Self-Diagnosis Test Sample (Figure 6.5.1.) ..............................................6 - 10
Explanation of Self-Diagnosis Test Items ................................................. 6 - 11
6.6 Sensor Calibration Test .......................................................................................6 - 12
6.7 LED Test..............................................................................................................6 - 14
6.8 Tone Send Test....................................................................................................6 - 15
6.9 High-speed Modem Send Test ............................................................................6 - 16
High-speed Modem Send and Receive Test Diagram (Figure 6.9.1) .......6 - 17
6.10 High-speed Modem Receive Test .......................................................................6 - 18
6.11 MF Send Test ......................................................................................................6 - 19
6.12 Tone (TEL/FAX)...................................................................................................6 - 20
6.13 Protocol Data Dump Printing...............................................................................6 - 21
Sample Protocol Data Dump (Figure 6.13.1) ......................................................6 - 22
Data Analysis (Figure 6.13.2) ..............................................................................6 - 23
Facsimile Control Field Conversion Table ...........................................................6 - 24
6.14 System Reset ......................................................................................................6 - 25
6.15 Service Code.......................................................................................................6 - 27
Service Code List [Table 6.15.1] (1/2) ................................................................6 - 28
Service Code List [Table 6.15.1] (2/2) ................................................................6 - 29
Section 7: Troubleshooting...................................................................... 7 - 1
7.1 Overview ...............................................................................................................7 - 1
7.1.1 Overall Troubleshooting Flow Chart ...........................................................7 - 2
7.1.2 No LCD Operation ......................................................................................7 - 3
7.1.3 ALARM LED On .........................................................................................7 - 4
7.1.4 Printing Test Failure....................................................................................7 - 5
7.1.5 No Local Copy ............................................................................................7 - 6
7.1.6 Auto Dial Failure .........................................................................................7 - 7
7.1.7 Transmission Problem................................................................................7 - 8
7.1.8 Auto Reception Failure ............................................................................. 7 - 11
7.1.9 Reception Problem ...................................................................................7 - 12
7.1.10 Sensor Calibration Test ............................................................................7 - 14
7.1.11 LED Test ...................................................................................................7 - 15
7.1.12 Tone Send Test.........................................................................................7 - 16
7.1.13 High-speed Modem Test...........................................................................7 - 17
7.1.14 MF Send Test ...........................................................................................7 - 19
7.1.15 Tone (TEL/FAX) Send Test .......................................................................7 - 20
7.1.16 No Acoustic Line Monitor..........................................................................7 - 21
7.1.17 Power Supply Unit ....................................................................................7 - 22
7.1.18 No Document Feeding..............................................................................7 - 31
7.1.19 Multiple Document Feeding......................................................................7 - 33

Table of Contents TOC - 11 OKIFAX 5300/5600
Service Manual, P/N 59278301
7.1.20 Document Skew .......................................................................................7 - 34
7.1.21 Document Jam .........................................................................................7 - 36
7.1.22 Printer Unit................................................................................................7 - 37
7.1.22.1 Precautions................................................................................7 - 37
7.1.22.2 Troubleshooting Flow Charts of Printer Unit..............................7 - 38
Overall Troubleshooting Flowchart .............................................7 - 39
1: Top Cover is Open .................................................................7 - 39
2: Replace Image Drum Message .............................................7 - 40
3: Engine Controller Error ..........................................................7 - 41
4: Fuser Unit Thermal Error .......................................................7 - 42
5: Paper Jams ............................................................................7 - 43
6: No Paper Tray or No Paper ...................................................7 - 45
Action Items (Printer Unit-LCD Message) Table 7.1.22.2 ...........7 - 45
7.1.22.3 Image Problems Table..............................................................7 - 46
Sample Image Problems (Figure 7.1.22.1) .................................7 - 47
7: Light or Blurred Output...........................................................7 - 48
8: Smeared Background on Output ...........................................7 - 49
9: Blank Output ..........................................................................7 - 50
10: Vertical Black Stripes on Output ..........................................7 - 51
11: Evenly Spaced Marks on Output..........................................7 - 52
12: Missing Print on Output........................................................7 - 53
13: Vertical White Stripes on Output ..........................................7 - 53
14: Poor Fusing..........................................................................7 - 53
Section 8: Dipswitch Settings ................................................................. 8 - 1
8.1 General Information...............................................................................................8 - 1
Appendix A: Board Descriptions ........................................................... A - 1
A1.1 Unit Configuration and Block Diagram (Figure A.1.1.2) ........................................A - 1
Block Diagram (Figure A1.2.2) ..............................................................................A - 2
Block Diagram Abbreviations ...............................................................................A - 3
A1.2 Function of Each Unit ............................................................................................A - 4
A2.1 Signal Flow Explanation .......................................................................................A - 7
(1) Copy Mode .................................................................................................A - 8
Copy Picture Signal (Figure A2.2.1) ...........................................................A - 9
(2) G3 Send Mode .........................................................................................A - 10
G3 Send Picture Signal (Figure A2.2.2) ...................................................A - 11
(3) G3 receive Mode ......................................................................................A - 12
G3 Receive Picture Signal (Figure A2.2.3)...............................................A - 13
(4) 300 bps Send Mode .................................................................................A - 14
300 bps Send Signal (Figure A2.2.4) .....................................................A - 15
(5) 300 bps Receive Mode.............................................................................A - 16
300 bps Receive Signal (Figure A2.2.5) ...................................................A - 17
(6) Report Printing..........................................................................................A - 18

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(7) Memory Transmission ..............................................................................A - 18
(8) Memory Reception ...................................................................................A - 18
Report Print Signal (Figure A2.2.6)...........................................................A - 19
Related Signals of CPU Diagram (Figure A3.2.1) ....................................A - 20
A3.2 M17 Circuit Diagram............................................................................................A - 20
A3.2.1 M17 Circuit Diagram ...............................................................................A - 20
Related Signals of IOGA (Figure A3.2.2)..................................................A - 21
A3.2.2 M17 Circuit Diagram ...............................................................................A - 21
A3.2.3 M17 Circuit Diagram ...............................................................................A - 22
Block Diagram of FLS, MASK and Real Time Clock (Figure A3.2.3) .......A - 22
Block Diagram of Audio Monitor Circuit (Figure A3.2.4) ...........................A - 23
A3.2.4 M17 Circuit Diagram ...............................................................................A - 23
Related Signals and Block Diagram of CIS (Figure A3.2.5) .....................A - 24
A3.2.5 M17 Circuit Diagram ...............................................................................A - 24
Related Signals of IEXSEED (Figure A3.2.6) ...........................................A - 25
A3.2.6 M17 Circuit Diagram ...............................................................................A - 25
Related Signals of Modem (Figure A3.2.8)...............................................A - 26
A3.2.7 M17 Circuit Diagram ...............................................................................A - 26
A3.2.8 M17 Circuit Diagram ...............................................................................A - 27
Interface between M17 Board and NCU Board (Figure A3.2.9) ...............A - 28
Interface between M17 Board and OPE (Figure A3.2.10) ........................A - 28
Related Signals of PC1/PC2 (Figure A3.2.11)..........................................A - 29
Related Signals and Block Diagram of LED Head (Figure A3.2.12).........A - 30
A3.2.9 M17 Circuit Diagram ...............................................................................A - 30
Related Signals of Send Motor (Figure A3.2.13) ......................................A - 31
A3.2.10 M17 Circuit Diagram .............................................................................A - 31
Related Signals of Drum/Resist Motor (Figure A3.2.14)...........................A - 33
A3.2.11 M17 Circuit Diagram .............................................................................A - 33
Related Signals of Fan Motor (Figure A3.2.15) ........................................A - 34
A3.2.12 M17 Circuit Diagram .............................................................................A - 34
Figure A3.2.16 Interface between M17 Board and 2'nd Tray ..................A - 35
A3.2.13 M17 Circuit Diagram .............................................................................A - 36
Sensor Functions......................................................................................A - 36
Sensors and Switch Control (Figure A3.2.17) ..........................................A - 37
Fuser Unit Temperature Control (Figure A3.2.18) ....................................A - 38
High/Medium Voltage Control (Figure A3.2.19) ........................................A - 39
Interface: M17 Board to Optional Memory Board (Figure A3.2.20) ........A - 40
A3.2.14 M17 Circuit Diagram .............................................................................A - 40
Interface: M17 Board to CTR Board (PC interface unit) (Figure A3.2.21)A - 41
Block Diagram of DRAM (Figure A3.2.22)................................................A - 43
A3.2.15 M17 Circuit Diagram .............................................................................A - 43
A3.4 OPE (05W) Circuit Diagram ................................................................................A - 44
Block Diagram of OPE (operation unit) (Figure A3.4.1)............................A - 45

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A3.6 Power Supply Unit...............................................................................................A - 46
A3.6.11VP (for 120 V)/2VP (for 230 V) Circuit Diagram (1/2).............................A - 46
1. Low-voltage power supply circuit ................................................A - 46
2. Input ratings ................................................................................A - 46
3. Output ratings..............................................................................A - 47
4. Block diagram .............................................................................A - 47
Block Diagram of PWU (power supply unit) (Figure A3.6.1) .......A - 48
5. General functional description.......................................................A - 49
5-1 General ...............................................................................A - 49
5-2 Circuit description ...............................................................A - 49
5-2-1 AC input section ................................................................A - 49
5-2-2 Heater control circuit..........................................................A - 49
5-3 Low-voltage section ............................................................A - 50
5-3-1 +30 V circuit.......................................................................A - 50
5-3-2 +/- 8 V circuit......................................................................A - 50
5-3-3 +5 V circuit.........................................................................A - 50
5-4 Protection circuits................................................................A - 50
5-5 Cover open circuit ...............................................................A - 50
A3.6.21VP (for 120 V)/2VP (for 230 V) Circuit Diagram (2/2).............................A - 51
5-6 High-voltage Section...........................................................A - 52
5-6-1 Functional overview...........................................................A - 52
5-6-2 SB2, DB1, DB2 and CB ....................................................A - 52
5-6-3 TR1 and TR2 ....................................................................A - 52
5-6-4 CH .....................................................................................A - 52
5-7 Photosensors ......................................................................A - 53
A3.7 UNC5 (NCU) Circuit Diagram..............................................................................A - 55
Block Diagram of UNC (Figure A3.7.1).....................................................A - 57
A3.8 TELU Circuit Diagram (option) ............................................................................A - 58
Block Diagram of TEL-U (option) (FigureA3.8.1).....................................A - 59
A3.11 MEMO (memory) Circuit Diagram .......................................................................A - 60
Related Signals of Memory Board (option) Figure A3.11.1 ......................A - 61
A3.12 CTR Circuit Diagram (PC interface unit; Option).................................................A - 63
Related Signals of P050 (PC interface unit) (Figure A3.12.1) ..................A - 63
Block Diagram of 2nd Tray (Figure A3.13.1) ............................................A - 66
A3.13 TQSB (Second tray) Circuit Diagram: option .....................................................A - 66

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Appendix B: Print Operation Description ............................................. B - 1
Overview ......................................................................................................................... B - 1
B2.1 Mechanical Components...................................................................................... B - 2
1) Image drum cartridge ................................................................................ B - 2
2) Resist motor .............................................................................................. B - 2
3) Drum motor................................................................................................ B - 2
4) LED head................................................................................................... B - 2
5) Fuser ......................................................................................................... B - 2
Layout of Print Station Components (Figure B2.1)............................................... B - 3
B2.2 Description of Print Operations ............................................................................ B - 4
B2.2.1Process Operations ................................................................................... B - 4
1) Hopping and feeding.................................................................... B - 4
(a) Hopping .............................................................................. B - 5
(b) Feeding............................................................................... B - 6
2) Charging ...................................................................................... B - 7
3) Exposure...................................................................................... B - 8
4) Developing ................................................................................. B - 10
5) Transfer...................................................................................... B - 12
6) Fusing ........................................................................................ B - 13
7) Cleaning..................................................................................... B - 14
8) Cleaning of rollers ...................................................................... B - 14
B2.3 Errors.................................................................................................................. B - 15
B2.3.1Errors List ................................................................................................ B - 15
B2.3.2Major Trouble Errors................................................................................ B - 16
B2.3.2.1 Fuser Error (Printer Alarm 4) .................................................. B - 16
B2.3.2.2 Fan Error (Printer Alarm 3) ..................................................... B - 16
B2.3.2.4 2'nd Tray Communication Error (Printer Alarm 2) ................... B - 17
B2.3.2.5 Cover Open ............................................................................ B - 17
B2.3.2.3 Paper Feed Monitoring ........................................................... B - 17
B2.3.3Recoverable Errors.................................................................................. B - 18
B2.3.3.1 Toner Low Detection ............................................................... B - 19
Composition ............................................................................... B - 19
Operation during toner low state................................................ B - 19
Operation ................................................................................... B - 19
Operation during toner full state................................................. B - 19
Low TonerAlarm ........................................................................ B - 20
B2.4 Other Special Cases .......................................................................................... B - 21
B2.4.1Manual Paper Feed ................................................................................. B - 21
B2.4.2Cleaning .................................................................................................. B - 21

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Appendix C: Circuit Diagrams................................................................ C - 1
C.1 General Information.............................................................................................. C - 1
Appendix D: Illustrated Parts List.......................................................... D - 1
1: Cabinet Assembly................................................................................................. D - 2
2: Control Panel Assembly ....................................................................................... D - 4
3A: Printer Assembly (1 of 2) ...................................................................................... D - 6
3B: Printer Assembly (2 of 2) ...................................................................................... D - 8
4A: Base Assembly (1 of 2) ...................................................................................... D - 10
4B: Base Assembly (2 of 2) ...................................................................................... D - 12
5: Scan Unit............................................................................................................ D - 14
6: Paper Guide Assembly....................................................................................... D - 16
7: Cables ................................................................................................................ D - 18
8: Option Telephone ............................................................................................... D - 20
9A: Second Paper Feed (Option) ............................................................................. D - 22
9B: Second Paper Feed (Option) ............................................................................. D - 24
10: Miscellaneous Items........................................................................................... D - 26
Whole Unit.......................................................................................................... D - 26
Consumables ..................................................................................................... D - 26
Options ............................................................................................................... D - 26
Packaging........................................................................................................... D - 26
User’s Manuals................................................................................................... D - 26
Service (Technical) Manuals .............................................................................. D - 26
Appendix E: Board Layout ......................................................................E - 1
Diagram........................................................................................................................... E - 2
APPENDIX F: Second Paper Feed ..........................................................F - 1
1. Outline ...................................................................................................................F - 1
1.1 Functions ....................................................................................................F - 1
1.2 External View and Component Names (Figure 1-1)...................................F - 1
2. Mechanism Description .........................................................................................F - 2
2.1 General Mechanism ...................................................................................F - 2
2.2 Hopper Mechanism ....................................................................................F - 2
3. Parts Replacement................................................................................................F - 3
3.1 Precautions Concerning Parts Replacement..............................................F - 3
Service Tools.................................................................................F - 4
Service Tools (Table 3-1)...............................................................F - 4
3.2 Parts Layout ...............................................................................................F - 5
Main Components Layout Diagram (Figure 3-1) ........................................F - 5
3.3 Parts Replacement Methods ......................................................................F - 6
3.3.1 Stepping Motor (Hopping).............................................................F - 7
3.3.2 TQSB2-PCB..................................................................................F - 9
3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear..................F - 9

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4. Troubleshooting...................................................................................................F - 10
4.1 Precautions Prior to the Troubleshooting .................................................F - 10
4.2 Preparations for the Troubleshooting .......................................................F - 10
4.3 Troubleshooting Method...........................................................................F - 11
4.3.1 LCD Status Message List ...........................................................F - 11
JAM error ....................................................................................F - 12
5. CONNECTION DIAGRAM ..................................................................................F - 14
5.1 Interconnection Diagram ..........................................................................F - 14
5.2 PCB Layout ..............................................................................................F - 15
6. PARTS LIST ........................................................................................................F - 16
1: Cabinet and Cassette Assembly (Figure 6-1) .............................F - 16
Paper Feeder (Table 6-1)............................................................F - 17
2: Mechanical Assembly (Figure 6-2)..............................................F - 18
Paper Feeder (Table 6-1)............................................................F - 19
Appendix G: RMCS System.................................................................... G - 1
Introduction .....................................................................................................................G - 1
1. Notes to Users......................................................................................................G - 2
1.1 Identifying the Packaged Contents............................................................G - 2
1.2 Required Devices ......................................................................................G - 2
1.3 Connectable Peripheral Equipment...........................................................G - 2
2. Setup .................................................................................................................... G - 3
2.1 Mounting....................................................................................................G - 3
2.1.1 Mounting Procedures................................................................... G - 3
2.2 Installation ................................................................................................. G - 4
2.2.1 Registering the RMCS Basic System ..........................................G - 5
2.2.2 Registering the Facsimile Model No. ........................................... G - 8
2.2.3 Deleting the Facsimile Model No. ................................................ G - 9
2.2.4 Updating the Password..............................................................G - 10
2.2.5 Updating the Dip Switches......................................................... G - 11
2.2.6 Deleting the RMCS Basic System ............................................. G - 12
3. RMCS Basic Operation ......................................................................................G - 13
3.1 Activating and Terminating the system .................................................... G - 13
3.1.1 To Activate..................................................................................G - 13
3.1.2 Entering the ID and Password ................................................... G - 13
3.2 TEL Directory...........................................................................................G - 14
3.2.1 To Terminate...............................................................................G - 14
3.2.2 Selecting Destination Drive........................................................G - 14
3.3 Main Menu...............................................................................................G - 15
3.4 Environment Setting ................................................................................G - 15
4. Message Modifying Tool.....................................................................................G - 16
4.1 Activating the Program ............................................................................G - 16
4.2 Modifying Message..................................................................................G - 16
4.2.1 File Selection ............................................................................. G - 17

Table of Contents TOC - 17 OKIFAX 5300/5600
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4.3 Saving Message ......................................................................................G - 17
4.3.1 Confirmation...............................................................................G - 18
4.4 Loading Message ....................................................................................G - 18
4.4.1 Confirmation...............................................................................G - 19
4.5 Other Message File .................................................................................G - 19
Appendix H: Product Service Bulletins................................................. H - 1
H.1 General Information.............................................................................................. H - 1
OKIDATA's Web Site ............................................................................................ H - 1
Faxable Facts....................................................................................................... H - 1
OKILINK II ............................................................................................................ H - 1
Appendix I: Recommended Spare Parts List (RSPL)............................. I - 1
I.1 General Information................................................................................................I - 1
OKIDATA's Web Site ..............................................................................................I - 1
Faxable Facts.........................................................................................................I - 1
OKILINK II ..............................................................................................................I - 1

Table of Contents TOC - 18 OKIFAX 5300/5600
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