OKIDATA ML320 Turbo User manual

Page: 1

Service Guide ML320/321Turbo

Chapter 0 About This Manual

ML320 Turbo // ML321 Turbo

Dot Matrix 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.

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.

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

Table of Contents Page

Service Guide ML320/321Turbo

0 About This Manual

Front Cover 1

1 Configuration

1.1. Standard Printer Configuration 2

1.2 Options 3

2 Operation Description

....2.1.1 Summary 4

....2.1.2 Microprocessor and the Peripheral Circuit 5

....2.1.3 Initialization 6

....2.1.4 Parallel Interface Control 7

....2.1.5 Print Control 8

....2.1.6 SP/LF Motor Control 9

....2.1.7 Operation Panel 10

....2.1.8 Alarm Circuit 11

....2.1.9 Power Supply Circuit 12

2.2 Mechanical Operation 13

....2.2.2 Spacing Operation (See Figure 2-4.) 14

....2.2.3 Head Gap Adjusting (See Figure 2-5.) 15

....2.2.4 Ribbon Drive (See Figure 2-6.) 16

....2.2.5 Paper Feed Operation 17

....2.2.6 Paper Detection Mechanism (See Figure 2-15.) 18

....2.2.7 Automatic Sheet Feed 19

....2.2.8 Paper Park Function (Continuous sheet paper) 20

3 Parts Replacement

3. ASSEMBLY/DISASSEMBLY 21

3.1 Precautions for Parts Replacement 22

3.2 Service Tools 23

3.3 Disassembly/Reassembly Procedure 24

....3.3.1 Printhead 25

....3.3.2 Ribbon Protector 26

....3.3.3 Pull-up Roller Assy 27

....3.3.4 Upper Cover, Access and Sheet Guide Assy 28

....3.3.5 Gear Case Assy 29

....3.3.6 PC Connector 30

....3.3.7 Space Motor, Guide Roller Assy 31

....3.3.8 Space Rack 32

....3.3.9 Carriage Cable 33

....3.3.10 Backup Roller Holder Assy 34

....3.3.11 Platen Assy 35

....3.3.12 Driver Board (SDDV) 36

....3.3.13 LF Motor 37

....3.3.14 Operation Panel PCB (LEOP) 38

Table of Contents Page

....3.3.15 Control/Power Supply Board (SDCT) 39

....3.3.16 Transformer Assy 40

....3.3.17 Change Lever and Gears 41

....3.3.18 Carriage Shaft 42

....3.3.19 Paper Pan 43

....3.3.20 Rear Tractor Assy 44

....3.3.21 Rear Pressure Assy 45

....3.3.22 Switch Lever 46

4 Adjustments

4. ADJUSTMENT 47

5 Periodical Maintenance

5.1 Cleaning 48

5.2 Lubrication 49

6 Troubleshooting

6.1 Items to Check Before Repair 50

6.2 Troubleshooting Table 51

6.3 Lamp Display 52

6.4 Connection Circuit Check for Printhead and SP/LF Motor 53

6.5 Troubleshooting Flow Chart 54

A Centronics Parallel Interface

A. PCB LAYOUT 55

B Parts Listing

Parts Listing 56

Figure 11-1 Upper Cover Assy 57

Figure 11-2 Printer General Assy 58

Figure 11-3 Printer Unit 59

Figure 11-4 Carriage Assy 60

Figure 11-5 Option Spare Parts 61

C Software Diagnostics and Adjustments

RS-232C SERIAL INTERFACE BOARD 62

2. OPERATION DESCRIPTION 63

....2.2.1 Operation at power on 64

....2.2.2. RS-232C interface 65

2.3 Communication Procedure Flowchart 66

3. TROUBLESHOOTING FLOWCHART 67

3.3 Local Test 68

Other manuals for ML320 Turbo

This manual suits for next models

Other OKIDATA Printer manuals

OKIDATA

OKIDATA OKIMATE 10 User manual

OKIDATA

OKIDATA OL810e User manual

OKIDATA

OKIDATA PT330 Installation instructions

OKIDATA

OKIDATA ML184Turbo User manual

OKIDATA

OKIDATA C 9000 Installation and maintenance instructions

OKIDATA

OKIDATA OL600e User manual

OKIDATA

OKIDATA Microline 93 User manual

OKIDATA

OKIDATA ML-520 User manual

OKIDATA

OKIDATA Pacemark 2410 User manual

OKIDATA

OKIDATA OL1200ex User manual

OKIDATA

OKIDATA 321 Turbo Manual

OKIDATA

OKIDATA 120 User manual

OKIDATA

OKIDATA MICROLINE 320 User manual

OKIDATA

OKIDATA okidata Installation and maintenance instructions

OKIDATA

OKIDATA MC873 User manual

OKIDATA

OKIDATA OKIPAGE 20 User manual

OKIDATA

OKIDATA ML320 Turbo User manual

OKIDATA

OKIDATA Microline ML395C User manual

OKIDATA

OKIDATA Microline ML395 User manual

OKIDATA

OKIDATA OKIMATE 20 User manual

OKIDATA

OKIDATA Microline 320 Turbo Use and care manual

OKIDATA

OKIDATA Pacemark 3410 How to use

OKIDATA

OKIDATA OL400e Series User manual

OKIDATA

OKIDATA B6300 Installation and maintenance instructions

Popular Printer manuals by other brands

Lexmark

Lexmark 1400 Series Manual

Canon

Canon i70 Series quick start guide

Evolis

Evolis Elypso user guide

Kyocera

Kyocera FS-9530DN specification

Canon

Canon LASER SHOT LBP-1210 Specifications

Samsung

Samsung BIXOLON SRP-350plusF user manual

Canon

Canon PIXMA PRO-1 Series Getting started

Canon

Canon PIXMA G3560 Online manual

Dell

Dell Color Laser Printer 2130cn user guide

Tektronix

Tektronix Phaser 840 user guide

Epson

Epson ET-7750 Programming guide

Canon

Canon CLBR 460ps Service manual

Eltron

Eltron P210 Guide manual

Ricoh

Ricoh MD-P1 Service manual

Epson

Epson SC-F7100 series user guide

Epson

Epson Stylus C40UX Service manual

Canon

Canon imagePASS-A2 Service guide

Canon

Canon S820D user guide