OKIDATA Okipage 16n User manual

Page: 1

Service Guide OKIPAGE16n

Chapter 0 About This Manual

OKIPAGE 16n

LED Page Printer

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.

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

Table of Contents Page

Service Guide OKIPAGE16n

0 About This Manual

Front Cover 1

1 Configuration

1.1 System Configuration 2

1.2 Printer Configuration 3

1.3 Optional Configuration 4

1.4 Specification 5

1.5 Safety Standards 6

....1.5.2 Warning Label 7

2 Operation Description

2. OPERATION DESCRIPTION 8

2.1 Main Control Board (BOARD-COM) 9

2.2 Power Supply Board 10

2.3 Relay/Driver Board (AOLC board) 11

2.4 Electrophotographic Process 12

....2.4.1 Electrophotographic process mechanism 13

....2.4.2 Electrophotographic process 14

....2.4.3 Process operation descriptions 15

2.5 Paper Jam Detection 16

2.6 Cover Open 17

2.7 Toner Low Detection 18

2.8 Stacker-full Detection 19

2.9 Page Size Detection 20

2.10 PostScript Board (BOARD-PSBA) Optional 21

3 Parts Replacement

3. PARTS REPLACEMENT 22

3.1 Precautions for Parts Replacement 23

3.2 Parts Layout 24

3.3 How to Change Parts 25

....3.3.1 Rear cover, side cover (L) Assembly, face-up stacker

Assembly, and I/F cover Assembly. 26

....3.3.2 Contact Assembly 27

....3.3.3 DC fan motor 28

....3.3.4 Manual feed hopper Assembly 29

....3.3.5 Side cover (R) (operator panel Assembly) 30

....3.3.6 Earth plate BK (R) (BOARD-PSBA, BOARD-COM) 31

....3.3.7 Stacker cover Assembly, damper arm, and washer 32

....3.3.8 Damper 33

....3.3.9 Stacker full sensor Assembly 34

....3.3.10 Cable cover (cable guides A and B) 35

....3.3.11 Eject roller Assembly 36

....3.3.12 Paper supply guide D 37

Table of Contents Page

....3.3.13 Separator F 38

....3.3.14 Front feeder roller Assy 39

....3.3.15 Hopping motor 40

....3.3.16 Front feeder paper end sensor 41

....3.3.17 Main chassis unit 42

....3.3.18 Registration roller 43

....3.3.19 Drum motor 44

....3.3.20 Idle gear 45

....3.3.21 Fusing Assembly 46

....3.3.22 Fuser pressure roller 47

....3.3.23 EP lock shaft 48

....3.3.24 Hopping roller Assembly 49

....3.3.25 Outlet sensor lever 50

....3.3.26 Toner sensor lever 51

....3.2.27 Paper sensor lever 52

....3.3.28 Inlet sensor lever 53

....3.3.29 Power Supply Board / Insulator 54

....3.3.30 Paper end lever 55

....3.3.31 Guide rail (L) Assembly 56

....3.3.32 Guide rail (R) Assembly 57

....3.3.33 Cover Frame 58

....3.3.34 LED head 59

....3.3.35 Separator Assembly 60

....3.3.36 Transfer roller 61

4 Adjustment

4. ADJUSTMENT 62

4.1 Maintenance Modes And Functions 63

....4.1.1 User maintenance mode 64

....4.1.1 User maintenance mode menu system 65

....4.1.2 System maintenance mode 66

....4.1.3 Engine maintenance mode 67

....4.1.4 EEPROM initialization 68

4.2 Adjustment When Replacing A Part 69

....4.2.1 Setting of LED head drive time 70

....4.2.2 Resetting the fuser counter 71

....4.2.3 Destination setting 72

5 Periodical Maintenance

5.1 Periodic Part Replacement 73

5.2 Cleaning 74

....5.2.1 Cleaning of LED lens array 75

6 Troubleshooting Procedures

6.1 Troubleshooting Tips 76

6.2 Points to Check before Correcting Image Problems 77

6.3 Tips for Correcting Image Problems 78

Table of Contents Page

6.4 Preparation for Troubleshooting 79

....Operator Panel Display 80

6.5 Troubleshooting Flow 81

....6.5.1 LCD Status Message/Trouble List 82

....6.5.2 LCD message troubleshooting 83

........1 The printer does not work normally after being turned

on. 84

........2 [JAM error] 85

............2-1 Paper input jam (1st tray) 86

............2 - 2 Paper input jam (front feeder) 87

............2 - 3 Paper feed jam 88

............2-4 Paper exit jam 89

........3 Paper size error 90

........4 Fuser unit error (ERROR 71), (ERROR 72), (ERROR

73) 91

........5 I/F time-out between printer and optional tray (ERROR

81) 92

........6 I/F time-out occurs between the printer and the operator

panel (ERROR 80) . 93

........7 Communication with the host cannot be performed via

the parallel interface 94

........8 Data cannot be received through the OKI HSP interface 95

........9 Synchronous serial I/O error (ERROR 74) 96

....6.5.3 Image troubleshooting 97

........1 Image are light or blurred 98

........2 Dark background density 99

........3 Black paper is output 100

........4 Black belts or stripes in the vertical direction 101

........5 Cyclic error 102

........6 Print voids 103

........7 Poor fusing 104

........8 White belts or streaks in the vertical direction 105

........9 Snowy print of high density pattern 106

........10 Blotchy faded print 107

7 Wiring Diagram

7.1 Interconnect Signal Diagram 108

7.2 PCB Layout 109

7.3 Resistance Check 110

Program/Font ROM Location 111

8 Parts List

8. PARTS LIST 112

Printer Unit (Figure 8-1) 113

Main Chassis Unit (Figure 8-2) 1 of 2 114

Main Chassis Unit (Figure 8-2) 2 of 2 115

Table of Contents Page

Front Feeder Unit (Figure 8-3) 116

Base Unit (Figure 8-4) 117

A Centronics Parallel Interface

Appendix A: Centronics Parallel Interface 118

B High Capacity Second Paper Feeder

Preface 119

1. Outline 120

....1.1 Functions 121

....1.2 External View and Component Names 122

2. Mechanism Description 123

....2.1 General Mechanism 124

....2.2 Hopper Mechanism 125

3. Parts Replacement 126

....3.1 Precautions Concerning Parts Replacement 127

....3.2 Parts Layout 128

....3.3 Parts Replacement Methods 129

........3.3.1 Idle rollers 130

........3.3.2 AOLT-PCB 131

........3.3.3 Hopping motor 132

........3.3.4 Feed roller 133

........3.3.5 Hopping roller rubber 134

........3.3.6 Side frame (L) assy 135

........3.3.7 Side frame (R) assy 136

....4. TROUBLESHOOTING 137

........4.1 Precautions Prior to the Troubleshooting 138

........4.2 Preparations for the Troubleshooting 139

........4.3 Troubleshooting Method 140

............4.3.1 LCD Status Message List 141

............4.3.2 Troubleshooting Flow 142

....5. Connect Diagram 143

........5.1 Interconnection Diagram 144

........5.2 PCB Layout 145

....6. Parts List 146

C Multi Feeder Maintenance

Preface 147

1. Outline 148

....1.1 Functions 149

....1.2 External View and Component Names 150

2. Mechanism Description 151

....2.1 General Mechanism 152

....2.2 Hopper Mechanism 153

3. Parts Replacement 154

....3.1 Precautions Concerning Parts Replacement 155

....3.2 Parts Layout 156

Table of Contents Page

....3.3 Parts Replacement Methods 157

........3.3.1 Separator 158

........3.3.2 AOLE-PCB 159

........3.3.3 Square-shaped connector 160

........3.3.4 Hopping Motor 161

........3.3.5 Planet gear 162

........3.3.6 Roller B 163

........3.3.7 Roller A 164

........3.3.8 Mini pitch belt & Feed roller 165

4. Troubleshooting 166

....4.1 Precautions Prior to Troubleshooting 167

....4.2 Preparations for Troubleshooting 168

....4.3 Troubleshooting Method 169

........4.3.1 LCD Status Message List 170

........4.3.2 Troubleshooting Flow 171

5. Connection Diagram 172

....5.1 Interconnection Diagram 173

5.2 PCB Layout 174

6. Parts List 175

D Localtalk Serial Interface (OKIPAGE16n/PS Only)

Localtalk Serial Interface (OKIPAGE 16n/PS Only) 176

Page: 2

Service Guide OKIPAGE16n

Chapter 1 Configuration

1.1 System Configuration

OKIPAGE16n / OKIPAGE16n/PS consists of control and engine blocks as the standard

configuration (See Figure 1-1.)

In addition, the following options are also available.

Figure 1-1

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Page: 3

Service Guide OKIPAGE16n

Chapter 1 Configuration

1.2 Printer Configuration

The printer unit consists of the following hardware components:

Electrophotographic processor



Paper feeder



Controller



Operator panel



Power Supply board



Figure 1-2 shows the printer unit configuration.

Figure 1-2

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