OKIDATA ML321 Turbo Manuals

Manuals and User Guides for OKIDATA ML321 Turbo. We have 5 OKIDATA ML321 Turbo manuals available for free PDF download: Service Manual, User Manual, Instructions

Okidata ML321 Turbo Service Manual (294 pages)

Dot Matrix Printers

Brand: Okidata | Category: Printer | Size: 2.45 MB

Table of Contents
2
About this Manual

8
- Manual Part Number and Revision
  8
1 Product Specifications

9
- General Description
  9
- Serial Number Identification & (A-D) Revision Levels
  10
- Compatibility Chart
  14
- Product Specifications
  17
- Paper Specifications
  20
- Physical Specifications
  22
- Power Requirements
  23
- Environmental Requirements
  24
- Agency Approvals
  25
- Options
  26
- Consumables
  27
- Memory Specifications
  28
- Reliability Specifications
  29
2 Principles of Operation

30
- Printer Overview
  30
- Circuit Board Description
  32
- Operator Panel Board
  32
- Power Supply
  32
- Control Board
  32
- Control Board
  35
- Large Scale Integrated Circuitry (LSI)
  36
- Electrical Operation
  39
- Initialization
  40
- Interface Control
  41
- Print Head Drive Circuit
  42
- Spacing Operation
  43
- Line Feed
  44
- Alarm Circuit
  45
- Printhead
  48
- Space Mechanism / Operation
  50
- Head Gap Adjusting Mechanism
  52
- Ribbon Drive Mechanism / Operation
  55
- Paper Feed Mechanism
  57
- Paper-End Detection Mechanism
  60
- Semi-Automatic Sheet Feeder (SASF) Operation
  62
3 Maintenance & Disassembly

63
- Disassembly/Assembly Procedures
  63
- Operator Panel Assembly
  66
- Transformer (Rev a & B)
  67
- Transformer Rev C
  96
- Transformer Rev D
  98
- Filter Assembly
  100
- Power Supply Board (Rev a & B)
  102
- Power Supply Boards Rev C
  104
- Power Interconnect Module / Cable Guide (Rev a & B)
  106
- Power Interconnect Module / Cable Guide Rev C
  108
- Power Interconnect Module / Cable Guide (Rev D)
  110
- Indicator Assembly (Bail Bar Assembly)
  112
- Head Cable Access Cover
  115
- Ribbon Drive Assembly
  117
- Space Motor Assembly
  119
- Carriage Frame Assembly
  121
- Space Rack
  124
- Guide Rail
  127
- Platen Assembly
  130
- Line Feed Motor and Gear
  132
- Line Feed Motor Gear
  132
- Line Feed Motor Interconnect Module
  138
- Reset Spring, Change Gear, and Idler Gear
  140
- Release Lever
  142
- Paper Pressure Guide
  143
- Pressure Roller Assembly
  146
- Tractor Assembly
  148
- Sensor Lever
  151
- Paper End (B) Lever
  153
- Main Chassis Assembly
  156
- Adjustments
  157
- Printhead Gap Adjustment
  157
- Cleaning
  161
- Lubrication
  163
4 Failure & Repair Analysis

166
- Troubleshooting Tips
  171
- Common Problems
  172
- Fault Alarms
  174
- Repair Analysis Procedures - Using the Raps
  178
- RAP Index
  178
- Troubleshooting Cautions
  179
- RAP 01A:operator Panel Lamps Do Not Light - Rev A, B
  181
- RAP 01B:operator Panel Lamps Do Not Light - Rev D
  183
- RAP 02A:abnormal Spacing - Rev A, B, and C
  185
- RAP 02B:abnormal Spacing - Rev D
  188
- RAP 03:Wrong or Missing Characters / Dots on Output
  191
- RAP 04:Line Feed Problems
  193
- RAP 05:Malfunction of Operator Panel Switch(Es)
  195
- RAP 06:Parallel Interface Does Not Receive Data
  196
- RAP 07:Serial Interface Does Not Receive Data
  197
- Hexadecimal Dump - Procedure
  199
- Resistance / Service Checks - Index to Charts
  200
- Interconnect Diagrams (Rev a & B)
  201
- Interconnect Diagrams (Rev C)
  203
- Printhead
  204
- Space Motor
  205
- Line Feed Motor
  206
- Operator Panel Board (Rev A, B, & C)
  207
- Operator Panel Board (Rev D)
  208
- Control Board (Rev a - D)
  209
- Printer Tests
  210
- Rolling ASCII Print Test
  210
- Font Sample Test
  210
- Serial Interface Loopback Test
  210
- Menu Operation
  217
- Top of Form
  219
- Paper Park
  221
- Forms Tear off
  223
- Board Diagrams
  225
- Index to Charts (A, B, C, D)
  227
- Control Board (LXMC) - Rev a and B
  230
- Control Board (LXMC-3) - Rev C
  232
- Control Board (LXMR) - Rev D
  235
- Power Supply (PAII-2) - Rev a and B
  237
- Power Supply (SUII-2) - Rev C
  239
- A.2.06 Filter Assembly - Rev A, B, C, and D
  241
- A.2.07 Operator Panel (LXSP) - Rev A, B, and C
  243
- A.2.08 Operator Panel (LXON) - Rev D
  245
- A.2.09 RS232-C Serial Interface (LXHI) - Rev A, B, C, and D
  246
- B.1.02 Definitions of Terms
  248
- B.2 Index to Illustrated Parts Breakdown Charts
  249
- B.2.01 Covers - Rev A, B, and C
  251
- B.2.02 Covers - Rev D
  253
- B.2.03 Electrical Components - Rev a and B
  255
- B.2.04 Electrical Components - Rev C
  258
- B.2.05 Electrical Components - Rev D
  261
- B.2.14 Tractor Assembly - Rev A, B, C, and D
  286
- B.2.15 Options - Rev A, B, C, and D
  288
- B.2.16 Consumables - Rev A, B, C, and D
  290
- B.2.17 Packaging - Rev A, B, C, and D
  291
- B.2.18 Documentation - Rev A, B, C, and D
  293

OKIDATA ML321 Turbo Service Manual (151 pages)

Dot Matrix Printers

Brand: OKIDATA | Category: Printer | Size: 1.99 MB

Table of Contents
3
1 Configuration

5
- Standard Printer Configuration
  5
- Options
  7
2 Operation Description

10
- Operation Description 2.1.1 Summary
  10
- Microprocessor and the Peripheral Circuit
  12
- Initialization
  17
- Parallel Interface Control
  19
- Print Control
  20
- SP/LF Motor Control
  22
- Operation Panel
  24
- Alarm Circuit
  26
- Power Supply Circuit
  28
- Mechanical Operation
  29
- Spacing Operation (See Figure 2-4.)
  32
- Head Gap Adjusting (See Figure 2-5.)
  34
- Ribbon Drive (See Figure 2-6.)
  36
- Paper Feed Operation
  38
- Paper Detection Mechanism (See Figure 2-15.)
  45
- Automatic Sheet Feed
  48
- Paper Park Function (Continuous Sheet Paper)
  50
3 Parts Replacement

51
- Assembly/Disassembly
  51
- Precautions for Parts Replacement
  52
- Service Tools
  54
- Disassembly/Reassembly Procedure
  55
- Printhead
  57
- Ribbon Protector
  59
- Pull-Up Roller Assy
  60
- Gear Case Assy
  63
- PC Connector
  65
- Space Motor, Guide Roller Assy
  67
- Space Rack
  69
- Carriage Cable
  71
- Backup Roller Holder Assy
  73
- Platen Assy
  74
- Driver Board (SDDV)
  75
- LF Motor
  77
- Operation Panel PCB (LEOP)
  79
- Control/Power Supply Board (SDCT)
  81
- Transformer Assy
  83
- Change Lever and Gears
  84
- Carriage Shaft
  85
- Paper Pan
  86
- Rear Tractor Assy
  87
- Rear Pressure Assy
  89
- Switch Lever
  91
4 Adjustments

92
- Adjustment
  92
- Adjustments 4. ADJUSTMENT
  92
5 Periodical Maintenance

99
- Cleaning
  99
- Lubrication
  101
6 Troubleshooting

108
- Items to Check before Repair
  108
- Troubleshooting 6.1 Items to Check before Repair
  108
- Troubleshooting Table
  109
- Lamp Display
  110
- Connection Circuit Check for Printhead and SP/LF Motor
  114
- Troubleshooting Flow Chart
  116
A Centronics Parallel Interface

126
- Pcb Layout
  126
B Parts Listing

127
- Parts Listing
  127
- Figure 11-1 Upper Cover Assy
  127
C Software Diagnostics and Adjustments

138
- Rs-232C Serial Interface Board
  138
- Operation Description
  139
- Operation at Power on
  141
- RS-232C Interface
  142
- Communication Procedure Flowchart
  143
- Troubleshooting Flowchart
  146
- Local Test
  150

OKIDATA ML321 Turbo User Manual (60 pages)

Brand: OKIDATA | Category: Printer | Size: 1.4 MB

Table of Contents
5
Section 1: Getting Started

7
- Features
  7
- Optional Accessories
  7
- Unpacking
  7
- Getting to Know Your Printer
  8
- Removing the Shipping Restraints
  9
- Installing/Replacing the Ribbon Cartridge
  10
- Connecting to the Computer
  11
- Connecting to the Power
  11
- Running the Self Tests
  17
  - Font Sample Test
    17
  - ASCII Test
    17
- Selecting an Emulation
  17
- Selecting a Printer Driver
  18
  - Printer Drivers
    18
  - OKIDATA Drivers
    18
Section 2: Maintaining Your Printer

19
- Replacing the Ribbon Cartridge
  19
- Clearing Paper Jams
  19
  - Rear-Feed Jams
    19
  - Correcting Repetitive Rear-Feed Jams
    21
  - Single-Sheet Jams
    23
- Cleaning the Housing
  24
Section 3: Using Your Printer

25
- Print Mode: Indicator Lights
  25
- Print Mode: Control Panel Keys
  26
  - Selecting the Print Quality
    27
  - Selecting the Character Pitch
    28
- Menu Mode: Control Panel
  28
  - Entering and Exiting the Menu Mode
    29
  - Resetting the Menu
    29
  - Printing the Menu Settings
    29
  - Changing the Menu Settings
    29
  - Summary of Menu Settings
    30
  - Explanations of Menu Items
    33
- Using the Printer's Features
  35
  - Tear Feature
    35
  - Forms Tear-Off Feature
    36
  - Paper Park Feature
    36
Section 4: Troubleshooting

39
Section 5: Specifications

41
Section 6: Service

43
- Getting Service and Support
  43
- Purchasing Replacement Parts & Accessories
  45
  - Ways to Purchase
    45
  - Replacement Parts
    45
  - Manuals
    45
  - Accessories
    46
Section 7: Commands

47
- Epson FX Commands
  47
- IBM Proprinter III Commands
  49
- MICROLINE Standard Commands
  51
FCC/IC/CE Statements

54
Warranty

55
E-52 Index

58
Material Safety Data Sheet

59

OKIDATA ML321 Turbo Service Manual (3 pages)

Dot Matrix Printers

Brand: OKIDATA | Category: Printer | Size: 2.01 MB

OKIDATA ML321 Turbo Instructions (1 page)

RS-232C Serial Interface Board

Brand: OKIDATA | Category: Printer Accessories | Size: 0.07 MB

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More OKIDATA Manuals

OKIDATA ML321 Turbo Manuals

Okidata ML321 Turbo Service Manual (294 pages)

Table of Contents

About this Manual

1 Product Specifications

2 Principles of Operation

3 Maintenance & Disassembly

4 Failure & Repair Analysis

OKIDATA ML321 Turbo Service Manual (151 pages)

Table of Contents

1 Configuration

2 Operation Description

3 Parts Replacement

4 Adjustments

5 Periodical Maintenance

6 Troubleshooting

A Centronics Parallel Interface

B Parts Listing

C Software Diagnostics and Adjustments

OKIDATA ML321 Turbo User Manual (60 pages)

Table of Contents

Section 1: Getting Started

Section 2: Maintaining Your Printer

Section 3: Using Your Printer

Section 4: Troubleshooting

Section 5: Specifications

Section 6: Service

Section 7: Commands

FCC/IC/CE Statements

Warranty

E-52 Index

Material Safety Data Sheet

OKIDATA ML321 Turbo Service Manual (3 pages)

OKIDATA ML321 Turbo Instructions (1 page)

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