Okidata MICROLINE 321 Manuals

Manuals and User Guides for Okidata MICROLINE 321. We have 1 Okidata MICROLINE 321 manual available for free PDF download: Service Manual

Okidata MICROLINE 321 Service Manual

Okidata MICROLINE 321 Service Manual (145 pages)

TURBO PRINTER

Brand: Okidata | Category: Printer | Size: 3.52 MB

Table of Contents

Table of Contents

4
- Service Manual
  2
- Configuration
  6
  - Standard Printer Configuration
    6
  - Options
    7
- Theory of Operation
  9
  - Electrical Operation
    9
    
    Summary
    9
    
    Microprocessor and the Peripheral Circuit
    9
    
    Initialization
    15
    
    Parallel Interface Control
    16
    
    Print Control
    17
    
    SP/LF Motor Control
    20
    
    Operation Panel
    23
    
    Alarm Circuit
    25
    
    Power Supply Circuit
    27
  - Mechanical Operation
    28
    
    Printhead Mechanism and Operation
    28
    
    Spacing Operation
    31
    
    Head Gap Adjusting
    33
    
    Ribbon Drive
    35
    
    Paper Feed Operation
    37
    
    Paper Detection Mechanism
    48
    
    Automatic Sheet Feed
    52
    
    Paper Park Function
    54
- Assembly/Disassembly
  55
  - Precautions for Parts Replacement
    55
  - Service Tools
    56
  - Disassembly/Reassembly Procedure
    57
    
    Printhead
    57
    
    Ribbon Protector
    58
    
    Pull-Up Roller Assy
    61
    
    Upper Cover Assy, Access Cover Assy and Sheet Guide Assy
    62
    
    Gear Case Assy
    63
    
    PC Connector
    64
    
    Space Motor, Guide Roller Assy
    65
    
    Space Rack
    66
    
    Carriage Cable
    67
    
    Backup Roller Holder Assy
    68
    
    Platen Assy
    69
    
    Driver Board (SDDV)
    70
    
    LF Motor
    71
    
    Operation Panel PCB (LEOP)
    72
    
    Control/Power Supply Board (SDCT)
    73
    
    Transformer Assy
    74
    
    Change Lever and Gears
    75
    
    Carriage Shaft
    76
    
    Paper Pan
    77
    
    Rear Tractor Assy
    78
    
    Rear Pressure Assy
    79
    
    Switch Lever
    80
- Adjustment
  81
- Cleaning and Lubrication
  89
  - Cleaning
    89
  - Lubrication
    91
6. Troubleshooting and Repair

99
- Troubleshooting and Repair
  99
  - Items to Check before Repair
    99
  - Troubleshooting Table
    99
  - Lamp Display
    100
  - Connection Circuit Check for Printhead and SP/LF Motor
    104
  - Troubleshooting Flow Chart
    107
  - Power Is Not Supplied
    107
- No Spacing Operation
  109
- Homing Does Not End Normally
  110
- Paper Jam While Paper Insertion
  111
- Smearing/Missing Dots
  112
- Faint or Dark Print
  113
- Ribbon Feed Trouble
  114
- Line Feed Trouble
  115
- Malfunction of Switch on Operation Panel
  116
- Data Receiving Failure
  117
  - Appendix
    120
  - Pcb Layout
    120
  - Spare Parts List
    121
  - RS-232C Serial Interface Board (OPTION
    133
    
    General
    133
    
    Operation Description
    134
    
    Communication Procedure Flowchart
    137
    
    Troubleshooting Flowchart
    139

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