Ricoh B120 Manuals

Manuals and User Guides for Ricoh B120. We have 1 Ricoh B120 manual available for free PDF download: Service Manual

Ricoh B120 Service Manual

Ricoh B120 Service Manual (513 pages)

GESTETNER, LANIER, RICOH, SAVIN MFP

Brand: Ricoh | Category: All in One Printer | Size: 9.73 MB

Table of Contents

Service Manual
1
Table of Contents
11
Important Safety Notices
27
B120 (Rla Only)
29
Installation

31
- Installation Requirements
  33
  - Environment
    33
  - Machine Level
    34
  - Minimum Space Requirements
    35
  - Power Requirements
    35
- Copier Installation
  36
  - Power Sockets for Peripherals
    36
  - Accessory Check
    36
  - Installation Procedure
    40
- Platen Cover Installation
  40
  - Accessory Check
    40
- Ardf Installation
  41
  - Accessory Check
    41
  - Installation Procedure
    41
- Adf Installation
  43
  - Accessory Check
    43
  - Installation Procedure
    43
- Two-Tray Paper Tray Unit Installation
  45
  - Accessory Check
    48
- One-Tray Paper Tray Unit Installation
  48
- Imb Installation
  51
  - Accessory Check
    51
  - Installation Procedure
    51
- Dram Installation
  52
- Anti-Condensation Heater Installation
  53
- Tray Heaters
  54
- Key Counter Installation
  59
Preventive Maintenance

61
- Pm Tables
  63
- Preventive Maintenance Schedules
  63
- How to Clear the Pm Counter
  65
Replacement and Adjustment

67
- General Cautions
  69
  - Pcu (Photoconductor Unit)
    69
  - Transfer Roller
    69
  - Scanner Unit
    69
  - Laser Unit
    70
  - Fusing Unit
    70
  - Paper Feed
    70
  - Important
    70
- Special Tools and Lubricants
  70
- Exterior Covers & Operation Panel
  71
  - Rear Cover
    71
  - Rear Lower Cover (Two-Tray Models Only)
    71
  - Copy Tray
    72
  - Left Upper Cover
    72
  - Front Upper Left Cover and Operation Panel
    72
  - Right Upper Cover
    72
  - Top Rear Cover
    72
  - Left Cover
    73
  - Front Long Cover
    73
  - Front Right Cover
    74
  - Right Rear Cover
    74
  - Right Door
    75
  - By-Pass Tray
    76
  - Left Lower Cover (Two-Tray Models Only)
    77
  - Right Lower Cover (Two-Tray Models Only)
    77
  - Platen Cover Sensor
    77
- Scanner Section
  78
  - Exposure Glass/Df Exposure Glass
    78
    
    Exposure Glass
    78
    
    DF Exposure Glass
    78
  - Lens Block
    79
  - Exposure Lamp, Lamp Stabilizer Board
    79
  - Original Width Sensor
    80
  - Original Length Sensor
    80
    
    Sensor Positions
    80
  - Changing the Original Sensor Positions (8K/16K)
    81
    
    Procedure
    82
  - Scanner Motor
    83
  - Scanner H
    83
  - Adjustment of 2Nd Scanner Position
    84
  - Adjustment of 1St and 2Nd Scanner Alignment
    85
- Laser Unit
  86
- Location of "Caution" Decal
  86
  - Toner Shield Glass
    87
  - Laser Unit
    87
  - Ld Unit
    88
  - Polygonal Mirror Motor
    88
  - Laser Unit Alignment Adjustment
    89
- Pcu Section
  90
  - Pcu
    90
  - Pick-Off Pawls
    90
  - Toner Density Sensor
    90
  - Opc Drum
    91
  - Charge Roller and Cleaning Brush
    92
  - Cleaning Blade
    92
  - Developer
    93
  - After Replacement or Adjustment
    94
- Toner Supply Motor
  95
- Paper Feed Section
  96
  - Paper Feed Roller
    96
  - Friction Pad
    96
  - Paper End Sensor
    96
  - Exit Sensor
    97
    
    Non-Duplex Models
    97
    
    Duplex Models
    97
  - By-Pass Feed Roller and By-Pass Paper End Sensor
    98
  - Registration Roller
    99
  - By-Pass Paper Size Sensor
    100
  - Registration Clutch
    100
  - Registration Sensor
    101
  - Upper Paper Feed Clutch and By-Pass Feed Clutch
    101
  - Relay Clutch
    102
  - Relay Sensor
    102
  - Lower Paper Feed Clutch
    102
  - Vertical Transport Sensor
    103
  - Paper Size Switch
    103
- Image Transfer
  104
  - Image Transfer Roller
    104
  - Image Density Sensor
    104
- Fusing
  105
  - Fusing Unit
    105
  - Thermistor
    105
  - Fusing Lamp
    106
  - Hot Roller
    106
  - Thermofuse and Thermostat
    107
  - Hot Roller Stripper Pawls
    107
  - Pressure Roller and Bushings
    108
  - Nip Band Width Adjustment
    109
- Duplex Unit (Duplex Models Only)
  110
  - Duplex Exit Sensor
    110
  - Duplex Entrance Sensor
    110
  - Duplex Inverter Sensor
    110
  - Duplex Transport Motor
    111
  - Duplex Inverter Motor
    111
  - Duplex Control Board
    111
- Other Replacements
  112
  - Quenching Lamp
    112
  - High-Voltage Power Supply Board
    112
  - Imb (Memory Board)
    113
  - Bicu (Base-Engine Image Control Unit)
    113
  - Iob (I/O Board)
    114
  - Main Motor
    114
  - Rear Exhaust Fan
    114
  - Left Exhaust Fan
    115
  - Psu (Power Supply Unit)
    115
  - Gearbox
    116
    
    Replacement Procedure
    116
    
    Gear Arrangement Within the Gearbox
    117
- Copy Adjustments: Printing/Scanning
  118
  - Printing
    118
    
    Registration - Leading Edge/Side-To-Side
    118
    
    Blank Margin
    119
    
    Main Scan Magnification
    119
  - Scanning
    120
    
    Registration: Platen Mode
    120
    
    Magnification
    121
    
    Standard White Density Adjustment
    122
  - Adf Image Adjustment
    123
    
    Registration and Blank Margin
    123
    
    Sub-Scan Magnification
    123
Troubleshooting

125
- Service Call Conditions
  127
  - Sc Code Descriptions
    128
- Electrical Component Defects
  134
  - Sensors
    134
  - Switches
    135
- Blown Fuse Conditions
  136
- Led Display
  136
  - Bicu
    136
  - Iob
    136
- Firmware Modification History
  137
Service Tables

140
- Using Service Program Modes
  142
  - Accessing SP Modes
    142
  - Accessing Copy Mode from Within an SP Mode
    142
  - How to Select a Program Number
    143
  - To Input a Value or Setting for an SP Mode
    143
  - Sp Mode Tables
    144
    
    SP1-XXX (Feed)
    144
    
    SP2-XXX (Drum)
    147
    
    SP4-XXX (Scanner)
    152
    
    SP5-XXX (Mode)
    158
    
    SP6-XXX (Peripherals)
    165
    
    SP7-XXX (Data Log)
    167
  - Test Pattern Printing (Sp5-902)
    172
  - Input Check (Sp5-803)
    173
  - Output Check (Sp5-804)
    177
    
    Output Check Table
    177
  - Copy Jam History (Sp7-903)
    178
  - Smc Printing (Sp5-992)
    179
  - Original Jam History Display (Sp7-905)
    179
  - Memory All Clear (Sp5-801)
    180
    
    Using a Flash Memory Card
    180
    
    Without Using a Flash Memory Card
    181
  - Program Upload/Download
    182
    
    Program Download (SP5-827)
    182
    
    Program Upload (SP5-826)
    183
  - Nvram Data Upload/Download
    184
    
    NVRAM Data Download (SP5-825)
    184
    
    NVRAM Data Upload (SP5-824)
    185
  - Aps and Platen/Adf Cover Sensor Output Display (Sp4-301)
    186
  - Adf Aps Sensor Output Display (Sp6-901)
    187
  - Serial Number Input (Sp5-811)
    188
  - ID Sensor Error Analysis (Sp2-221)
    189
- User Tools
  190
  - How to Enter and Exit User Tools
    190
  - User Tools Table
    190
    
    System Setting Table
    190
    
    Copy Features Table
    191
Detailed Section Descriptions

192
- Overview
  194
  - Component Layout
    194
  - Paper Path
    196
  - Drive Layout
    197
- Board Structure
  198
  - Block Diagram
    198
- Copy Process Overview
  200
- Development
  201
  - Scanner Drive
    203
  - Original Size Detection in Platen Mode
    204
- Image Processing
  206
  - Sbu (Sensor Board Unit)
    207
  - Auto Image Density (Ads)
    208
  - Ipu (Image Processing Unit)
    209
    
    Image Processing Path
    211
  - Imb (Memory Controller and Dram)
    221
  - Video Control Unit (Vcu)
    222
  - Overview
    223
- Laser Exposure
  223
  - Auto Power Control (Apc)
    224
  - Ld Safety Switch
    225
- Photoconductor Unit (Pcu)
  226
  - Drive
    227
- Drum Charge
  228
  - Charge Roller Voltage Correction
    229
  - ID Sensor Pattern Production Timing
    230
  - Drum Charge Roller Cleaning
    231
  - Developer Mixing
    233
  - Development Bias
    234
  - Toner Supply
    235
    
    Toner Bottle Replenishment Mechanism
    235
    
    Toner Supply Mechanism
    236
  - Toner Density Control
    237
    
    Overview
    237
    
    Toner Density Sensor Initial Setting
    239
    
    Toner Concentration Measurement
    239
    
    Vsp/Vsg Detection
    239
    
    Toner Supply Reference Voltage (Vref) Determination
    239
    
    Toner Supply Determination
    239
    
    Toner Supply Motor on Time Determinations
    240
  - Toner Supply in Abnormal Sensor Conditions
    241
    
    ID Sensor
    241
    
    TD Sensor
    241
  - Toner Near End/End Detection and Recovery
    242
    
    Toner Near End Detection
    242
    
    Toner Near End Recovery
    242
    
    Toner End Detection
    242
    
    Toner End Recovery
    242
- Drum Cleaning and Toner Recycling
  243
  - Drum Cleaning
    243
  - Toner Recycling
    243
- Paper Feed
  244
  - Overview
    244
  - Paper Feed Drive Mechanism
    245
  - Paper Feed and Separation Mechanism
    245
  - Paper Lift Mechanism
    246
  - Paper End Detection
    246
  - Paper Size Detection
    247
    
    Paper Tray
    247
    
    By-Pass Tray
    248
  - Side Fences
    249
  - Paper Registration
    249
- Image Transfer and Paper Separation
  250
  - Overview
    250
  - Image Transfer Current Timing
    251
  - Transfer Roller Cleaning
    252
  - Paper Separation Mechanism
    252
- Image Fusing and Paper Exit
  253
  - Overview
    253
  - Fusing Drive and Release Mechanism
    253
  - Fusing Entrance Guide Shift
    254
  - Pressure Roller
    254
  - Fusing Temperature Control
    255
    
    Overview
    255
    
    Fusing Lamp Control
    257
    
    Pre-Heat Mode (Fusing Idling)
    258
    
    To Prevent Offset When Making Multiple Copies on Small-Width Paper
    258
    
    Reduced Copy Speed with Narrow Paper
    258
  - Overheat Protection
    259
- Duplex Unit
  260
  - Overall
    260
  - Drive Mechanism
    261
  - Basic Operation
    262
    
    Larger than A4 Short-Edge/Lt Short-Edge
    262
    
    Up to A4 Short-Edge/Lt Short-Edge
    263
  - Feed in and Exit Mechanism
    264
- Energy Saver Modes
  265
  - Overview
    265
  - Low Power Mode
    266
    
    Entering Low Power Mode
    266
    
    What Happens in Low Power Mode
    266
    
    Returning to Stand-By Mode
    267
  - Night/Off Mode
    267
    
    Entering Night/Off Mode
    267
    
    What Happens in Night/Off Mode
    268
    
    Returning to Stand-By Mode
    268
Auto Reverse Document Feeder B379

270
Overall Machine Information

272
- Mechanical Component Layout
  272
- Electrical Component Layout
  273
- Drive Layout
  274
Detailed Section Descriptions

275
- Original Size Detection
  275
- Pick-Up and Separation
  277
- Original Transport and Exit
  278
  - Single-Sided Originals
    278
  - Double-Sided Originals
    279
  - Original Trailing Edge Sensor
    280
- Stamp
  281
- Timing Charts
  282
- Jam Detection
  286
- Overall Electrical Circuit
  287
- Free Run
  288
  - Procedure
    288
  - One-Sided Free Run Process
    288
  - Two-Sided Free Run Process
    288
Replacement and Adjustment

289
- Df Exit Table and Cover
  289
- Original Feed Unit
  290
- Left Cover
  291
- Pick-Up Roller
  292
- Feed Belt
  293
- Separation Roller
  294
- Original Set/Original Reverse Sensors
  295
- Original L/W Sensor, Trailing Edge Sensor
  296
- Feed Clutch, Pick-Up Sol, Transport Motor, Feed Motor
  297
  - Exterior
    297
  - DF Feed Clutch
    297
  - Pick-Up Solenoid
    297
  - Transport Motor
    297
  - DF Feed Motor
    297
- Registration Sensor
  298
- Stamp Solenoid and Original Exit Sensor
  299
Document Feeder B387

300
Overall Information

302
- Mechanical Component Layout
  302
- Electrical Component Layout
  303
- Drive Layout
  304
Detailed Section Descriptions

305
- Original Size Detection
  305
- Pick-Up and Separation
  307
- Original Transport and Exit Mechanism
  308
- Stamp
  309
- Timing Charts
  310
  - A3, Stamp Mode
    311
- Jam Detection
  312
- Overall Electrical Circuit
  313
- Free Run
  314
  - Procedure
    314
  - Free Run Process
    314
Replacement and Adjustment

315
- Exterior Covers
  315
  - Rear Cover
    315
  - Original Table
    315
  - Front Cover
    315
  - Original Entrance Guide
    315
  - Df Feed Cover
    316
- Feed Unit
  316
- Separation Roller
  316
- Pick-Up Roller
  317
- Feed Belt
  317
- Original Sensors (Width, Length, Trailing Edge)
  318
- Original Set Sensor
  319
- Transport Motor
  319
- Df Cover Open Sensor/Feed Clutch/Rom/Df Drive Board
  320
  - Exterior
    320
  - Feed Cover Open Sensor
    320
  - Feed Clutch
    320
  - Rom
    320
  - DF Drive Board
    320
- Registration Sensor
  321
- Pick-Up Solenoid
  321
- Stamp Solenoid
  322
Paper Tray Unit B384

324
Overall Machine Information

326
- Mechanical Component Layout
  326
- Electrical Component Layout
  327
- Drive Layout
  328
Detailed Descriptions

329
- Paper Feed and Separation Mechanism
  329
- Paper Lift Mechanism
  330
- Paper End Detection
  332
- Paper Height Detection
  333
  - Paper Size Detection
    334
- Side and End Fences
  335
  - Side Fences
    335
  - End Fence
    335
Replacement and Adjustment

336
- Feed Roller Replacement
  336
- Tray Main Board Replacement
  337
- Tray Motor Replacement
  337
- Relay Clutch Replacement
  338
- Upper Paper Feed Clutch Replacement
  339
- Lower Paper Feed Clutch Replacement
  340
- Lift Motor Replacement
  341
- Paper End Sensor Replacement
  342
- Vertical Transport Sensor Replacement
  342
- Paper Size Switch Replacement
  343
Paper Tray Unit B385

344
Overall Machine Information

346
- Mechanical Component Layout
  346
- Electrical Component Layout
  347
- Drive Layout
  348
Detailed Descriptions

349
- Paper Feed and Separation
  349
- Paper Lift Mechanism
  350
- Paper End Detection
  352
- Paper Height Detection
  353
- Paper Size Detection
  354
- Side and End Fences
  355
  - Side Fences
    355
  - End Fence
    355
Replacement and Adjustment

356
- Feed Roller Replacement
  356
- Tray Main Board Replacement
  357
- Tray Motor Replacement
  358
- Lift Motor Replacement
  359
- Paper End Sensor Replacement
  360
- Paper Size Switch Replacement
  360
Specifications

362
- General Specifications
  364
  - Duplex Unit (B043 Only)
    367
- Machine Configuration
  368
- Optional Equipment
  369
  - Ardf
    369
  - Adf
    370
  - One-Tray Paper Tray Unit
    371
  - Two-Tray Paper Tray Unit
    372
  - 16MB IMB (Copier Memory Unit)
    372
Service Tables

375
- Fax Unit
  386
- Removal and Replacement
  399
- Error Codes
  405
- Fax Sc Codes
  413
- Fax Sc Code Table
  414
- Function no
  418
- How to Enter and Exit Service Mode
  418
- Service Level Functions
  418
- Data Transfer
  425
- Fax Software Download
  425
- Fax Sram Download
  426
- Fax Sram Upload
  427
- Bit Switches
  428
- System Switches
  428
- Scanner Switches
  439
- Plotter Switches
  444
- Communication Switches
  449
- G3 Switches
  454
- Ncu Parameters
  462
- Dedicated Transmission Parameters
  473
- Programming Procedure
  473
- Service Ram Addresses
  477
- Operation Dump List
  492
- Ncu (Us)
  495
- Ncu (Europe/Asia)
  496
  - Features List
    501
  - Capabilities of Programmable Items
    504
  - Overall Machine Control
    505
  - Video Data Path
    506

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