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Page: 1

Service Guide OKIPAGE4w

Chapter 0 General Manual Information

OKIDATA OKIPAGE4w

LED Page Printer

Service Manual

Adobe Acrobat printable reference

copy of the OKIDATA Service Training Manual.

09/17/97

Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered

at 300 dpi, which is ideal for printing, but does not view on most displays well.

Okidata is a registered trademark, and OkiPage is a trademark of Oki Electric Industry Co., Ltd. HP, LaserJet and

PCL5e are trademarks of Hewlett-Packard Co. Adobe and Acrobat are trademarks of Adobe Systems Incorporated.

Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

Table of Contents Page

Service Guide OKIPAGE4w

0 General Manual Information

Front Cover 1

Preface 2

1 Configuration

CONFIGURATION 3

Printer Configuration 4

Specification 5

Safety Standards - Certification Label 6

....Warning Label 7

2 Operation Description

OPERATION DESCRIPTION 8

Main Control Board 9

Power Supply Unit 10

High-Voltage Power Supply Board 11

Electro-Photographic Processor 12

Electro-Photographic Process 13

....Explanation of Each Operation - Hopping 14

....Printing and warm-up 15

....Charging 16

....Exposure 17

....Development 18

....Transfer 19

....Fusing 20

....Cleaning 21

Paper Jam Detection 22

Toner Low Detection 23

Cover Open 24

3 Parts Replacement

Parts Replacement 25

Precautions for Parts Replacement 26

Parts Layout 27

....Base Frame Unit 28

....Base Plate Unit 29

Replacing Parts 30

....Extend Plate 31

....LED Head and Head Spring 32

....Transfer Roller 33

....Upper Cover Assy 34

....High-Voltage Power Supply Board 35

....Top Cover Assy and Flat Cable Assy 36

....Paper Holder 37

....Side Plate M and Idle Gear 38

....Registration Roller 39

....Eject Roller Shaft and Eject Roller 40

....Fuser Assy 41

....Pressure Roller B (Back Up Roller) 42

....Separator Guide 43

....Pulse Motor (Main) 44

....Hopping Shaft Assy 45

Table of Contents Page

....Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy 46

....Base Plate 47

4 Adjustment

Adjustment 48

....Adjustment Types and Functions 49

....Adjustment When Replacing a Part 50

5 Periodical Maintenance

Periodical Maintenance - Periodical Replacement Parts 51

Cleaning 52

6 Troubleshooting Procedures

Troubleshooting Procedures - Troubleshooting Tips 53

Check Points Before Correcting Image Problems 54

Notes When Correcting Image Problems 55

Preparation Before Troubleshooting 56

Troubleshooting 57

....Status Monitor Message List 58

....Status Message Troubleshooting 59

........The OKIPAGE 4w malfunctions after the power supply has

been turned on. 60

........[JAM error] - Paper input jam 61

........[JAM error] - Paper feed jam 62

........Paper exit jam 63

........Paper size error 64

........Fuser assy error 65

....Image Troubleshooting 66

........An image is light or blurred entirely. 67

........Dark background density 68

........Paper is blank. 69

........Vertical black band/stripe 70

........Cyclic defect 71

........Print voids. 72

........Poor fusing 73

........Vertical white band/stripe 74

........Figure 6-4 75

........Figure 6-5 76

7 Wiring Diagram

Wiring Diagram - Interconnect Signal Diagram 77

PCB Layout 78

8 Parts List

Cover Assy Upper 79

Base Frame Unit 80

Base Plate Unit 81

A Local Printing

Local Printing 82

B Parallel Interface

Parallel Interface - (1) Connector 83

Cable 84

Parallel I/F signals 85

Signal level 86

Interface circuit 87

Table of Contents Page

Timing charts 88

C Maintenance Utility

Maintenance Utility - Outline Of Maintenance Utility 89

ROLE OF MAINTENANCE UTILITY 90

OUTLINE OF MAINTENANCE UTILITY FUNCTIONS 91

DETAIL OF EACH FUNCTION - Engine Menu Setting 92

....Engine Counter 93

....Exit 94

....Printer Status 95

....Test Print 96

....Option 97

....About 98

....Reload 99

Page: 2

Service Guide OKIPAGE4w

Chapter 0 General Manual Information

PREFACE

This Service Manual describes the maintenance procedures for OKIPAGE 4w LED Page Printers.

This manual is written for use by service personnel. Refer to the customer documentation for handling

and operating procedures.

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Page: 3

Service Guide OKIPAGE4w

Chapter 1 Configuration

1. CONFIGURATION

1.1 System Configuration

The OKIPAGE 4w consists of a control block, a power supply unit, and an engine block. (See Figure 1-1.)

Figure 1-1

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Page: 4

Service Guide OKIPAGE4w

Chapter 1 Configuration

Printer Configuration

The printer unit consists of the following five hardware components:

• Electro-Photographic Processor

• Paper Feeder

• Main Control Board

• High-Voltage Power Supply Board

• Power Supply Unit

Figure 1-2 is the configuration of the printer unit.

Figure 1-2

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Page: 5

Service Guide OKIPAGE4w

Chapter 1 Configuration

Specification

(1) Type Desktop

(2) Outside dimensions Height 5.9" (150 mm) (excludes protruding Width 12.2" (310 mm) portion) Depth 7.5" (191 mm)

(3) Weight 1.71 lb (3.8 kg)

(4) Development method Dry non-magnetic development system Exposure method LED stationary head

(5) Paper used Type

• Standard paper

– Xerox 4200 (20 lbs)

• Application paper (manual face-up feed)

– Label

– Envelope

– OHP paper (Transparency)

Size 14" (355.6 mm) (Max.) x 8.5" (215.9 mm)

Thickness

– Automatic feed: 16 to 28 lbs (60 to 90 g/m 2 )

– Manual feed: Label, Envelope, OHP paper (transparency)

(6) Printing speed First print: 25 seconds (A4) (after warm-up) Continuous print: 4 sheets/minute

(A4) Warm-up time: 40 seconds (120 VAC for ODA, 230 VAC for OEL/INT)

(at room temperature 77 °F (25 °C))

(7) Paper feeding method Automatic paper feed or manual paper feed

(8) Paper delivery method Face down

(9) Resolution 300 dpi x 300 dpi, 600 dpi x 600 dpi (quasi)

(10) Power input 230 VAC +15%, -14% (for OEL/INT) 120 VAC +6%, -15% (for ODA)

(11) Power consumption Peak: 450W Typical operation: 100W Idle: 30W Power save mode: 5W

(12) Temperature and humidity

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