Ricoh B273 Manuals

Manuals and User Guides for Ricoh B273. We have 1 Ricoh B273 manual available for free PDF download: Service Manual

Ricoh B273 Service Manual

Ricoh B273 Service Manual (188 pages)

Service Manual

Brand: Ricoh | Category: All in One Printer | Size: 13.51 MB

Table of Contents

Service Manual
1
Table of Contents
13
Safety Warning
19
Electric Shock and Fire Safety Precautions
20
Safety Precautions
20
Handling Precautions
21
Esd Precautions
23
Installation

25
- Installation
  27
Preventive Maintenance

31
Replacement and Adjustment

35
Troubleshooting

85
Service Program Mode

135
- Detailed Descriptions
  153
  - Printer Component Layout
    155
Detailed Descriptions

155
- Front View
  155
- Rear View
  156
- System Layout
  157
  - Paper Feed
    157
  - Transfer Assembly
    157
  - Drive Assembly
    157
  - Fusing Assembly
    158
    
    Thermostat
    158
    
    Thermistor
    158
    
    Hot Roller
    158
    
    Pressure Roller
    158
    
    Safety Features
    158
    
    Safety Devices
    158
  - Scanning Unit
    159
    
    CCD Module Specifications
    159
  - Laser Scanning Unit (Lsu)
    159
  - Toner Cartridge
    160
  - New Aio Detection
    161
  - Toner End Detection
    161
- Controller
  162
  - Main Pba
    162
  - Asic
    163
    
    Main Function Block
    163
  - Memory
    163
  - Flash Memory
    163
  - Sdram
    163
  - Battery Backup
    163
  - Sensor Input Circuit
    164
    
    Paper Empty Sensor
    164
    
    By-Pass Tray Sensor
    164
    
    Paper Feed Sensor
    164
    
    Paper Exit Sensor
    164
    
    Cover Open Sensor
    164
    
    DC Fan/Solenoid Driving
    164
    
    Motor Driving
    164
- Smps and Hvps
  165
  - Hvps
    166
    
    Transfer High Voltage (THV+)
    166
    
    Charge Voltage (MHV)
    166
    
    Cleaning Voltage (THV-)
    166
    
    Developing Voltage (DEV)
    166
    
    Supply Voltage (SUP)
    167
    
    OPC Ground ZENER Voltage
    167
  - Smps(Switching Mode Power Supply)
    168
    
    AC Input
    168
    
    Rated Output Power
    168
    
    Power Consumption
    168
    
    Length of Power Cord
    169
    
    Power Switch
    169
    
    Feature
    169
    
    Environment Condition
    169
    
    EMI Requirement
    169
    
    Safety Requirement
    169
  - Fusing Unit Ac Power Control
    170
- Engine
  171
  - Paper Feed
    171
    
    Jam0 (Feed Area)
    171
    
    Jam1 (Inside the Machine)
    171
    
    Jam2 (Exit Area)
    171
  - Drive
    172
  - Transfer
    172
  - Fusing
    172
  - Laser Scanning Unit
    173
- Operation Panel (Ope)
  173
- Usb Host
  174
- Fax Section
  174
  - Modem
    174
  - Liu Pba
    174
Specifications

175
Appendix

185
- Block Diagram
  187
- Connection Diagram
  188

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