Digital Equipment LN15 Manuals

Manuals and User Guides for Digital Equipment LN15. We have 2 Digital Equipment LN15 manuals available for free PDF download: Service Manual & Parts List, User Manual

Digital Equipment LN15 Service Manual & Parts List

Digital Equipment LN15 Service Manual & Parts List (174 pages)

Brand: Digital Equipment | Category: Printer | Size: 2 MB

Table of Contents

Table of Contents
2
Chapter 1 General Description

9
- Introduction
  9
- Equipment Construction
  10
  - General
    10
  - Model Configuration
    10
  - Structure
    12
    
    Covers
    12
    
    Laser Unit
    12
    
    Printer Mechanism
    12
    
    Figure 1-2 Structure
    13
    
    Figure 1-3 Laser Unit
    15
    
    Figure 1-4 Printer Mechanism
    16
    
    Print Unit (User Replaceable)
    17
    
    Cleaner Assembly
    17
    
    Power Supply Unit
    18
    
    Figure 1-5 Power Supply Unit
    18
    
    Shield Plate
    19
    
    Control Board
    19
    
    Figure 1-6 Control Board
    19
    
    Sensor Board Assembly
    20
    
    Paper Tray
    20
    
    Multi-Function Feeder
    20
Chapter 2 Installation

21
Chapter 3 Troubleshooting

27
- Figure 3-1 Printer Elements and Connections
  28
- When the Power Indicator Does Not Light
  29
- When Printing Quality Is Abnormal
  30
  - Figure 3-2 Abnormal Print Quality
    30
  - When Faint
    31
  - When Deep
    32
  - Black Vertical Line
    33
  - White Vertical Line
    34
  - Lacking Space at the Top and Bottom
    35
  - Black Point, White Point
    36
  - Second Printing (Ghost Printing)
    37
  - Dirty Back/Edge
    38
  - Black
    39
  - White
    40
  - Blur
    41
  - Smudge
    42
- Error and Status Messages
  43
  - Error Messages
    43
  - Table 3-1 Error Messages
    43
  - Status Messages
    44
  - Table 3-2 Action-Required Status Messages
    44
  - Table 3-3 Printer Status Messages
    45
- Resetting the Print Unit (Fuser Unit) Counter
  46
- Others
  48
Chapter 4 Maintenance

49
- General
  49
- General Precautions
  49
- Maintenance Tools
  50
- Table 4-1 Maintenance Tools
  50
- Maintenance Levels
  51
- Preventive Maintenance
  51
- Parts Drawings
  52
- Figure 4-1 Basic Components
  52
- Figure 4-1 Basic Components-Continued
  53
- Parts that Must Not be Disassembled
  54
- Level 1 Maintenance
  55
- Level 2 Maintenance
  59
  - Replacement
    59
    
    Upper Cover Replacement
    60
    
    Control Panel Replacement
    63
    
    Laser Unit Replacement
    66
    
    Fuser Unit Replacement
    67
    
    Power Supply Board Replacement
    69
    
    FAN 1 Replacement
    70
    
    FAN 2 Replacement
    71
    
    Control Board Replacement
    72
    
    High-Voltage Power Supply Board and Sensor Board Replacement
    73
    
    Main Motor Replacement
    75
    
    Pick-Up Motor Replacement
    76
    
    Pick-Up Roller Replacement
    77
    
    Resist Motor Replacement
    79
    
    Paper Feed Roller Replacement
    80
    
    Transfer Charger Unit Replacement
    83
    
    Cover-Open Switch Replacement
    84
    
    Volume Board Replacement
    85
    
    Stacker-Full Sensor Board (SFS Board) Replacement
    86
    
    Frame-2 Assembly Replacement
    87
    
    Multi-Function Feeder Board (MFF Board) Replacement
    88
    
    Separator Assembly (Friction Pad Holder) Replacement
    89
    
    Print Unit Disassembly
    90
  - Lubrication and Precautions
    91
    
    Base Frame Assembly
    92
    
    Frame L Assembly
    93
    
    Fuser Unit
    94
    
    Main Motor Unit
    95
    
    Frame-2 Assembly
    96
    
    Guide Assembly
    97
    
    Feed-2 Assembly
    98
    
    Gear Box Assembly
    99
    
    Gear Box Lever Assembly
    100
    
    Developing Unit
    101
    
    Magnet Roller Bracket Assembly
    103
    
    Heat Roller Subunit
    104
    
    Heat Roller Base Unit
    105
- Diagnostics
  106
Chapter 5 Description of Operation

114
- General
  114
- Figure 5-1 Printer Block Diagram
  114
- Mechanical Operation
  115
- Figure 5-2 Picking, Printing, Fusing, and Ejecting Paper
  115
- Figure 5-3 Structure of the Paper Feed Drive Unit
  116
- Figure 5-4 Process Drive Unit
  117
- Figure 5-5 Print Unit
  118
- Electrical Operation
  119
  - System Diagram
    119
  - Figure 5-6 System Diagram
    119
  - Figure 5-7 Connection Diagram
    120
  - Main Controller
    121
    
    Cpu
    123
    
    Ram
    123
    
    Rom
    123
    
    Expansion Interface
    124
    
    Print Density Converter LSI
    126
    
    Reset Circuit
    126
  - Engine Controller Block Diagram
    128
    
    Cpu
    130
    
    Rom
    131
    
    Lsi
    131
  - Interface Communication Method
    132
    
    Centronics Parallel Interface
    132
    
    Figure 5-11 Centronics Parallel Interface Signal Timing Chart
    132
    
    RS-232C Interface (Option)
    133
    
    Figure 5-12 RS-232C Serial Interface Signal Timing Chart
    133
    
    FEIT (Fujitsu Enhanced Imaging Technology)
    134
    
    Figure 5-13 Block Diagram (Internal Configuration)
    134
  - Printing Method
    135
    
    Print Control Process
    135
    
    Bit-Map Data Generate
    135
    
    Figure 5-14 Print Process Block Diagram
    135
    
    Video Data Transfer
    136
    
    LD Unit
    136
    
    Heat Roller Temperature Control
    136
    
    Figure 5-15 Video Data Transfer Block Diagram
    136
    
    Power Saving Control
    137
    
    Alarm Detect
    137
  - Control Panel Control
    138
  - Figure 5-16 Control Panel Block Diagram
    138
  - Power Supply
    139
    
    Overcurrent Protection
    139
    
    Overvoltage Protection
    139
    
    PW STOP Signal
    139
    
    Figure 5-17 Power Supply Block Diagram
    140
Chapter 6 Replacement Parts

141

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Digital Equipment LN15 User Manual

Digital Equipment LN15 User Manual (122 pages)

Brand: Digital Equipment | Category: Printer | Size: 5 MB

Table of Contents

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