Ricoh G144 Manuals

Manuals and User Guides for Ricoh G144. We have 1 Ricoh G144 manual available for free PDF download: Service Manual

Ricoh G144 Service Manual

Ricoh G144 Service Manual (144 pages)

Brand: Ricoh | Category: Printer | Size: 8.39 MB

Table of Contents

Table of Contents
13
Installation
27
- Installation Procedure
  29
Preventive Maintenance
31
- Pm Intervals
  33
Replacement and Adjustment
35
- General Precautions
  37
  - Servicing the Machine
    37
  - Releasing Plastic Latches
    37
- Covers
  38
  - Front Cover
    38
  - Bypass Cover
    39
  - Rear Cover
    40
  - Top Cover
    42
  - Right Side Cover
    43
  - Left Side Cover
    44
  - Middle Cover
    45
- Exit Roller
  46
- Engine Shield Assembly and Exit Board
  47
  - Engine Shield
    47
  - Exit Board
    49
- Smps
  50
- Fusing Unit
  53
  - Fusing Unit Assembly
    53
  - Thermostat
    54
  - Fusing Lamp
    55
  - Stripper Pawls
    56
    
    Reassembling the Fusing Unit
    57
    
    Note
    58
  - Thermistor
    59
- Unplug Fan
  60
- Laser Scanning Unit
  61
- Drive Unit
  63
- Transfer Unit
  64
- Bypass Tray Unit and Feed Roller
  66
  - Bypass Tray Unit
    66
- Pick-Up Assembly and Solenoid
  68
Troubleshooting
73
- Paper Path
  75
  - Paper Jam Conditions
    76
    
    Jam0
    76
    
    Jam1
    76
    
    Jam2
    77
- Clearing Paper Jams
  78
  - Jam2 (Paper Exit Area)
    78
  - Jam0 (Paper Feed Area)
    80
  - Jam1 (Toner Cartridge Area)
    81
  - Tips to Avoid Paper Jams
    82
- Sample Pattern
  83
  - Printing a Demo Page and Configuration Page
    83
  - Printing a Cleaning Sheet
    84
- Operation Panel Display
  84
- Periodic Defective Image
  84
- Printout Problems
  85
  - Incorrect Print Position
    85
  - Vertical Black Line and Band
    85
  - Vertical White Line
    85
  - Horizontal Black Bands
    86
  - Black/White Spots
    86
  - Light Image
    86
  - Dark/Black Image
    87
  - Uneven Density
    87
  - Background
    87
  - Ghost 1
    88
  - Ghost 2
    88
  - Ghost 3
    88
  - Ghost 4
    89
  - Stains on Front of Page
    89
  - Stains on Back of Page
    89
  - Blank
    89
- Paper Feed Problems
  91
  - Incorrect Print Position
    91
  - Jam 0
    91
  - Jam 1
    91
  - Jam 2
    92
  - Multi-Feeding
    92
  - Paper Rolled in the Fusing Unit
    92
  - Paper Remains Rolled on the Opc Drum
    93
- Set Malfunctions
  94
  - All Leds Blink (Fusing Error)
    94
  - All Leds Blink (Scan Error)
    94
  - Paper Empty
    94
  - Paper Empty Without Indication
    94
  - Fusing Gear Melts (Overheats)
    95
  - Cover Open
    95
  - Error Lamp When Cover Is Opened
    95
  - Power
    96
  - Printed Vertical Lines Are Curved
    96
- Toner Cartridge
  97
  - Toner Cartridge Precautions
    97
  - Redistributing Toner
    97
  - Toner Cartridge Details
    99
- Software Problems
  102
  - Printer Does Not Operate Correctly 1
    102
  - Printer Does Operate Correctly 2
    103
  - Abnormal Printing
    104
  - Spool Error
    104
    
    How to Delete Data in the Spool Manager
    104
Service Program Mode
105
- Firmware Download
  107
  - Download Procedure
    107
    
    DOS Command Mode
    107
    
    EWS (Embedded Web Server) Mode
    108
  - Firmware Recovery Procedure
    110
Detailed Descriptions
111
- Machine Overview
  113
  - Front View
    113
  - Rear View
    114
  - Operation Panel
    115
    
    On Line/Error Button
    115
    
    Toner Save Button
    116
    
    On Line/Error Button and Toner Save Button
    116
    
    Cancel Button
    116
- Machine Overview
  117
  - Firmware
    117
  - Print Engine
    117
    
    Paper Feed Mechanism
    117
    
    Drive Mechanism
    117
    
    Laser Scanning Unit
    117
    
    Development Unit
    117
    
    Fusing Unit
    117
    
    Electrical Components (PBA)
    118
- System Layout
  119
  - Paper Feed Unit
    120
    
    Paper Separation Method
    120
    
    Paper Tray
    120
    
    Pick-Up Roller
    120
    
    By-Pass Tray
    120
    
    Optional Paper Feed Unit
    120
  - Transfer Unit
    121
  - Drive
    121
  - Fusing Unit
    121
    
    Thermostat
    121
    
    Thermistor
    121
    
    Safety Features
    122
    
    Safety Devices
    122
  - Laser Scannning Unit (Lsu)
    122
  - Toner Cartridge
    123
  - New Aio Detection
    124
  - Toner End Detection
    124
- Asic(Spgp)
  125
  - Memory
    125
  - Flash Memory
    125
  - Sdram
    126
  - Sensor Input Circuit
    127
    
    Paper Empty Sensor
    127
    
    By-Pass Tray Sensor
    127
    
    Paper Feeding
    127
    
    Paper Exit Sensor
    127
    
    Cover Open Sensor
    127
    
    DC Fan/Solenoid Driving Circuit
    127
    
    Motor Drive Circuit
    128
    
    Transfer
    128
    
    Fusing
    128
    
    Lsu
    129
- Smps and Hvps
  130
  - Hvps (High Voltage Power Supply)
    131
    
    Transfer High Voltage (THV+)
    131
    
    Charge Voltage (MHV)
    131
    
    Cleaning Voltage (THV-)
    131
    
    Developing Voltage (DEV)
    132
    
    Supply
    132
  - Smps (Switching Mode Power Supply)
    133
    
    AC Input
    133
    
    Rated Output Power
    133
    
    Consumption Power
    133
- Engine
  134
  - Paper Feed
    134
Specifications
135
- General Specifications
  137
- Controller
  138
- Software Specifications
  139
- Optional Unit Specifications
  140
Appendix
141
Block Diagram
143
Connection Diagram
144

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