OKIDATA OL400 User manual

Page: 1

Service Guide OL400

Chapter 0 About This Manual

OL400 / 800 / 820 / 830 / 840

LED Page Printers

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.

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Table of Contents Page

Service Guide OL400

0 About This Manual

Front Cover 1

Part Number 3

1 Product Specifications

1.1 Overview 4

1.2 Physical Specifications 5

1.3 Print Specifications 6

1.4 Paper Specifications 7

1.5 Power Requirements 8

1.8 Options 9

1.9 Consumables 10

1.10 Reliability Data 11

2 Principles of Operation

2.1 Printer Overview 12

2.2 Main Control Function 13

....2.2.02 Centronics Parallel Interface 14

....2.2.03 RS-232C Serial Interface 15

....2.2.04 Optional Font Card 16

....2.2.05 Optional RAM Board / IC Set 17

2.3 Printer Control Function 18

....2.3.02 Operation Panel 19

....2.3.03 Engine Board 20

....2.3.04 Power Supply Unit 21

....2.3.05 Fuser Unit 22

....2.3.06 Main Motor (Drum Motor) 23

....2.3.07 LED Head 24

....2.3.08 Resist Motor 25

....2.3.09 DC Fan 26

2.4 Mechanical Operation Description 27

....2.4.02 OL400 Printing Process 28

....2.4.03 Process Descriptions 29

2.5 Sensors And Switches 30

....2.5.01 Sensors and Switches 31

....2.5.02 Sensor Functions 32

3 Maintenance & Disassembly

3.1 Maintenance 33

....3.1.02 Maintenance Tools 34

....3.1.03 Maintenance Precautions 35

3.2 Disassembly/Assembly Procedures 36

....3.2.01 Upper Cover 37

....3.2.02 LED Head 38

Table of Contents Page

....3.2.03 Interface Board 39

....3.2.04 RAM Board (Option) 40

....3.2.05 Main Controller Board 41

....3.2.06 Engine Controller Circuit Board (LLAB) 42

....3.2.07 Main Motor 43

....3.2.08 DC Fan Assembly 44

....3.2.09 Idle Gears "A" and "B", and the Reduction Gear 45

....3.2.10 Power Supply Unit 46

....3.2.11 Upper Unit 47

....3.2.12 Fusing Unit 48

....3.2.13 Backup Roller 49

....3.2.14 Transfer Charger Assembly 50

....3.2.15 Resist Roller Assembly 51

....3.2.16 Idle Gear C 52

....3.2.17 Paper Supply Unit 53

....3.2.18 Resist Motor 54

....3.2.19 Engine Connection Board 55

....3.2.20 Hopping Roller 56

....3.2.21 Separator 57

....3.2.22 Ozone Filter 58

3.3 Adjustments And Service Checks 59

....3.3.02 Actual Page Count 60

....3.3.03 Modified Page Count 61

....3.3.04 Vertical Print Start Position Adjustment 62

....3.3.05 Setting the LED Head Drive Time 63

....3.3.06 Voltage Adjustment (+5 vdc) 64

....3.3.07 Darkness Control 65

3.4 Cleaning 66

4 Failure & Repair Analysis

4.1 Overview 67

4.2 Troubleshooting Updates 68

4.3 Reporting Problems 69

4.4 Troubleshooting Tips 70

4.5 Fault Alarms 71

....4.5.02 Error Messages Table 72

....4.5.03 Output SamplesTitle of Section 73

4.6 Repair Analysis Procedures 74

....4.6.02 RAP Index 75

........RAP 01 Printer Does Not Initialize 76

........RAP 02: Paper Feed Jam Alarm 77

........RAP 03: Paper Jam Alarm 78

........RAP 04: Size Tray Error Alarm 79

........RAP 05: Engine Error - Fusing Problem Alarm 80

........RAP 06: Engine Error Alarm 81

Table of Contents Page

........RAP 07: Light or Blurred Images 82

........RAP 09: Blank Output 83

........RAP 10: Vertical Black Stripes 84

........RAP 11: Repeating Marks 85

........RAP 12: Blank Spots 86

........RAP 13: Vertical White Stripes 87

........RAP 14: Black Page 88

........RAP 15: Poor Fusing 89

4.7 Self-Tests 90

A Reference Charts

A.1 Overview 91

A.2 Charts 92

....A.2.01 Main Controller Board (LBPE / LBPF) 93

....A.2.02 Engine Controller Board (LLAB) 94

....A.2.03 Operator Panel PCB (LLDC) 95

....A.2.04 Engine Connection PCB (LLCC) 96

....A.2.05 Centronics Parallel Interface PCB (LLCP / LLCQ) 97

....A.2.06 RS-232C Interface PCB (LLRS) 98

....A.2.07 Expansion RAM Board (optional) (RAMK / RAMH) 99

....A.2.08 Power Interconnect Board (LLIE) 100

....A.2.09 Power Supply Unit 101

B Illustrated Parts Listing

B.1 Illustrated Parts Listing 102

....B.1.02 Definitions of Terms 103

....B.1.03 Parts Ordering Information 104

B.2 Charts 105

....B.2.01 Items 1 - 7 106

....B.2.02 Items 8 - 16 107

....B.2.03 Items 17 - 27, and 41 108

....B.2.04 Items 28 - 35 109

....B.2.05 Items 36 - 40 110

Page: 2

Service Guide OL400

Chapter 0 About This Manual

This document may not be reproduced without written permission of the Okidata® Technical

Training Group. Every effort has been made to ensure the accuracy of the information contained

in this training course. Okidata is not responsible for errors beyond its control.

First Edition, March 1992

Second Edition May, 1994

Written and produced by the Okidata Technical Training Group

Please address any comments on this publication to:

Technical Training Group

Okidata

532 Fellowship Road

Mount Laurel, NJ 08054-3499

Fax Number: (609) 235-2600, ext. 7034

Okilink Login Name: Technical Training

Okidata is a registered trademark of Oki Electric Industry Company, Ltd.; marques deposee de

Oki Electric Industry Company, Ltd.; marca registrada, Oki Electric Industry Company, Ltd.

Microline is a registered trademark of Oki Electric Industry Company, Ltd.

Centronics is a registered trademark of Centronics Inc.

Diablo is a registered trademark of Xerox Corporation

Epson is a registered trademark of Seiko Epson Corporation

IBM is a registered trademark of International Business Machines, Inc.

LaserJet and LaserJet+ are registered trademarks of Hewlett Packard Corporation

Proprinter is a registered trademark of International Business Machines, Inc.

Note: The OL400 Service Training course is part of the OL-Series Training Course and can

not be purchased separately.

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Page: 3

Service Guide OL400

Chapter 0 About This Manual

Note: The OL400 Service Training course is part of the OL-Series Training Course and can not be

purchased separately.

THE OL400/800/820/830/840 VIDEO TRAINING KIT covers the following

products:

OL400

OL800

OL820

OL830

OL840

The following items are included in the kit:

OL400 Service Handbook

OL800/820 Service Handbook

OL830 Service Handbook

OL840 Service Handbook

Service Training Video

OL400/800/820 User's Documentation

OL830 User's Documentation

OL840 User's Documentation

Price: $95.00 ($124.00 Canadian)

P/N 58226902

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Page: 4

Service Guide OL400

Chapter 1 Product Specifications

1.1 OVERVIEW

1.1.01 General Information

The OL400 is a desktop, page printer, using a stationary LED head and dry electrophotography as

its exposure and development method. The printer has a resolution of 300 x 300 dots per inch and

a continuous print speed of 4 letter-sized sheets per minute.

A 512K page memory is standard on the OL400; this can be expanded to 1.5 or 2.5 megabyte

with an optional RAM printed circuit board and a memory expansion chip set. Twenty-five resident

fonts are included in the OL400 and five optional font cards are currently available. Downloadable

fonts can also be used with this printer.

The printer can be purchased with either a Centronics parallel interface or an RS-232C serial

interface.

The OL400's consumables consist of the toner kit, which include a toner cartridge, lens cleaner,

and a fuser cleaner pad and the image drum kit which includes the drum cartridge and ozone

filter.

A letter-size paper tray is included with the printer, and legal, and envelope trays are also

available. Paper feeding can be done automatically or manually.

The printer will print on a variety of paper types, labels, envelopes, and transparencies.

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Page: 5

Service Guide OL400

Chapter 1 Product Specifications

1.2 PHYSICAL SPECIFICATIONS

1.2.01 Outside Dimensions

Width: 17.72"

Height:5.24"

Length: 17.72"

1.2.02 Printer Weight

24 lbs.

1.2.03 LED Array

Number of LED Elements - 2560

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Page: 6

Service Guide OL400

Chapter 1 Product Specifications

1.3 PRINT SPECIFICATIONS

1.3.01 Print Specifications

Development method: Dry electrophotography

Exposure method: LED stationary head

1.3.02 Print Speed

First print: 28 seconds maximum (letter size)

Continuous print: 4 sheets/minute. (letter size)

Warm-up time: 40 seconds maximum [at room temperature 77oF (25oC) and rated voltage (120

VAC)]

1.3.03 Symbol Sets

Thirty-nine symbol sets are available with the OL400.

1.3.04 Available Fonts

There are twenty-five resident fonts in the OL400.

1.3.05 Paper Feed Method

Automatic feed

Manual Feed

1.3.06 Paper Delivery Method

Face down/face up

1.3.07 Resolution

300 x 300 dots/inch

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Page: 7

Service Guide OL400

Chapter 1 Product Specifications

1.4 PAPER SPECIFICATIONS

1.4.01 Paper Types

Letter

Size: 8.5" x 11"

Feed: Automatic or Manual

Weight:Minimum 16 lbs

Maximum 24 lbs

Recommended 20 lbs

Legal

Size: 8.5" x 14"

Feed: Automatic (with optional paper tray) or Manual

Weight:Minimum 16 lbs

Maximum 24 lbs

Recommended 20 lbs

Envelope

Size:Minimum 3.5" x 7.5"

Maximum 7.2" x 10.1"

Feed: Automatic (with optional paper tray) or Manual

Weight:Minimum 16 lbs

Maximum 24 lbs

Recommended 20 lbs

Labels

Manual feed / Face up delivery only

Use labels designed specifically for laser/page printers.

Transparencies

Manual feed / Face up delivery only

Must be able to withstand the heat of the fusing process.

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