Ricoh G186 Manuals

Ricoh G186 Manuals

Manuals and User Guides for Ricoh G186. We have 1 Ricoh G186 manual available for free PDF download: Service Manual

Ricoh G186 Service Manual

Ricoh G186 Service Manual (175 pages)

G186 Ricoh

Brand: Ricoh | Category: Printer | Size: 6.8 MB

Table of Contents

Service Manual
1
Table of Contents
13
Read this First
19
Safety Warning
19
Caution for Safety
20
Handling Precautions
21
Installation

23
1 Installation

27
- Installation Requirements
  29
2 Preventive Maintenance

31
- Pm Intervals
  33
3 Replacement and Adjustment

35
- General Precautions on Disassembly
  37
  - Check Points for Servicing
    37
  - Releasing Plastic Latches
    37
- Exterior Cover
  38
  - Cover Right
    38
  - Rear Cover
    39
  - Cover Left
    40
  - Top Cover
    41
  - Open Cover
    43
  - Inner Cover
    44
  - By-Pass Tray
    45
- Paper Feed and Exit
  48
  - Knock up Plate Unit
    48
  - Exit Roller
    48
  - Registration Roller Unit
    50
  - By-Pass Pick up Unit
    52
  - Stopper Roller Unit
    55
  - Idle Roller Unit
    55
  - Pick up and Registration Roller
    56
  - Feed Roller
    59
  - Rubber Pad
    60
- Laser Optics
  61
  - Lsu
    61
- Image Transfer
  62
  - Transfer Roller
    62
    
    CAUTIONS When Replacing a Transfer Roller
    63
- Fusing
  64
  - Fuser Unit
    64
Sm G186

65
- Drive
  68
  - Main Drive Unit
    68
  - Development Drive Unit
    69
- Others
  72
  - Main Pcb
    72
  - Connector Pcb
    73
  - Solenoids
    74
  - Duplex Solenoid
    76
  - Holder Pad Unit
    77
  - Toner Sensor Pcb
    78
  - Engine Pcb
    80
  - DC Fan
    82
4 Troubleshooting

85
- Procedure of Checking Symptoms
  87
- The Causes and Solutions of Bad Images
  88
  - Vertical Black Line and Band
    88
  - Vertical White Line
    88
  - Horizontal Black Band
    89
  - Black/White Spot
    90
  - Light Image
    91
  - Dark Image or Black Page
    92
  - Uneven Density
    93
  - Background
    93
  - Ghost (1)
    94
  - Ghost (2)
    95
  - Ghost (3): Fuser
    96
  - Stains on the Face of Page
    96
  - Stains on the Back of Page
    97
  - Blank Page Print out (1)
    98
  - Blank Page Print out (2)
    98
- The Causes and Solutions of Bad Discharge
  100
  - Wrong Print Position
    100
  - Jam 0
    100
  - Jam 2
    101
  - Duplex Jam 1
    103
  - Duplex Jam 0
    104
  - Multi-Feeding
    104
  - Paper Rolled in the Fuser
    105
  - Paper Rolled on the Opc Drum
    105
- Malfunction Causes and Solutions
  107
  - Fuser Error
    107
  - Lsu (Laser Scanning Unit) Error
    107
  - Malfunction of the Gear of the Fuser Due to Melting4-22
    108
  - Paper Empty
    108
  - No Paper Empty Message
    108
  - Cover Open
    109
  - No Error Message When the Cover Is Open
    109
  - Defective Motor Operation
    110
  - No Power
    110
  - Curved Vertical Line
    111
- Causes and Solutions of Software Errors
  112
  - The Printer Is Not Working (1)
    112
  - The Printer Is Not Working (2)
    113
  - Abnormal Printing
    114
  - Spool Error
    115
- Periodic Defective Image
  116
5 Service Tables

117
- Overview
  119
  - Key Operation
    119
- Edc (Engine Diagnostic Control) Mode
  120
  - Edc Setup
    120
  - Entering Edc
    120
    
    Usage
    120
  - Cover Open/Close Status
    120
    
    Function
    121
  - Sensor Status
    121
    
    Usage
    124
  - Motor Test
    124
  - Fan Test
    125
    
    Usage
    126
    
    Function
    126
  - Clutch/ Solenoid
    126
  - Fuser Control
    126
    
    Usage
    127
  - Lsu
    127
    
    Usage
    128
  - Developer Control
    128
    
    Function
    128
  - Cru Counter
    129
    
    Usage
    130
    
    Function
    130
  - Print Test and Option Version
    130
- Firmware Download
  132
  - Download Procedure
    132
    
    DOS Command Mode
    132
    
    WIM (Web Image Monitor) Mode
    132
  - Firmware Recovery Procedure
    134
- Sample Pattern
  135
  - Information
    135
    
    To Print Information Pages
    135
  - Demo
    135
6 Detailed Section Descriptions

137
- Printer Components
  139
  - Front View
    139
  - Rear View
    140
- System Layout
  141
  - Feeding
    141
    
    Separation Method
    141
    
    Basic Cassette
    142
    
    Pick-Up Roller
    142
    
    Stopper Roller
    142
    
    Registration Roller
    142
    
    By-Pass Tray
    142
    
    Duplex Unit
    142
    
    SCF (Second Cassette Feeder)
    142
  - Transfer
    142
  - Drive
    143
  - Fuser
    143
    
    Thermostat
    143
    
    Heat Roller
    143
    
    Pressure Roller
    143
    
    Items for Safety
    143
  - Lsu (Laser Scanner Unit)
    143
  - Print Cartridge
    144
- Engine Hardware Specifications
  145
  - Main Board
    145
    
    Asic (ORION 2)
    145
    
    Memory
    146
    
    Others
    147
  - Internal Block Diagram
    147
  - Sensor Input Circuit
    147
    
    Paper Empty Sensing
    147
    
    Paper Sensing on the By-Pass Tray
    148
    
    Paper Feeding/ Width Toner Cartridge Sensing
    148
    
    Paper Exit Sensing
    148
    
    Cover Open Sensing
    148
    
    DC Fan/ Solenoid Driving
    148
    
    Motor Driving
    148
  - Smps & Hvps Board
    149
    
    HVPS (High Voltage Power Supply)
    149
    
    SMPS (Switching Mode Power Supply)
    151
    
    Fuser AC Power Control
    152
  - Engine Firmware
    153
    
    Control Algorithm
    153
    
    Driver
    154
    
    Transfer
    154
    
    Fusing
    154
    
    Lsu
    155
7 Specifications

157
- General Specifications
  159
  - Printer
    159
- Controller
  161
- Handling Paper
  162
8 Appendix

163
- Block Diagram
  165
  - System Block Diagram
    165
- Connection Diagram
  167
  - Signal Description Table
    168
    
    CN18 [POWER] Main ↔ SMPS/HVPS
    168
    
    Cn19 [Duplex] Main ↔ Duplex B'D
    169
    
    Cn20 [Exit Sensor] Main ↔ Exit Sensor
    169
    
    Cn24 [Dc_Mot] Main ↔ Main Motor
    170
    
    Cn25 [Joint] Main Joint B'D
    170
    
    Cn22 [Dev_Mot] Main ↔ Deve Motor
    171
    
    Cn23 [Ptl] Main Ptl
    171
    
    Cn18 [Panel] Main ↔ Panel
    172
    
    Cn15 [Cover Open] Main ↔ Cover Open
    172
    
    Cn13 [Dpx_Sol] Main ↔ Duplex Solenoid
    173
    
    Cn9 [Lsu] Main ↔ Lsu
    173
    
    Cn4 [Cart] Main Toner Sensor
    174
    
    Cn17 [Scf] Main ↔ Scf B'D
    175
    
    Cn8 [Therm] Main ↔ Fuser
    175

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