Ricoh A-C4 Manuals

Manuals and User Guides for Ricoh A-C4. We have 1 Ricoh A-C4 manual available for free PDF download: Service Manual

Ricoh A-C4 Service Manual

Ricoh A-C4 Service Manual (497 pages)

Machine Code: B195/B198/B264/B265

Brand: Ricoh | Category: Copier | Size: 9.42 MB

Table of Contents

Laser Safety
3
Table of Contents
5
Installation Procedure

14
- Installation Requirements
  14
  - Environment
    15
  - Machine Level
    15
  - Minimum Space Requirements
    16
  - Power Requirements
    18
- Installation Flow Chart
  19
- Main Machine Installation
  20
  - Accessory Check
    20
  - Installation Procedure
    21
    
    Development Unit and PCU
    23
    
    Toner Bottle
    26
    
    Paper Trays
    27
    
    Initialize TD Sensor and Developer
    29
    
    Set Paper Size for Paper Trays
    30
    
    Electrical Total Counter
    31
    
    HDD Caution Decal
    31
    
    Exposure Glass Cleaner
    32
- Paper Tray Unit Installation (B542)
  33
  - Accessory Check
    33
  - Paper Tray Unit Installation Procedure
    34
- 1-Bin Tray Unit Installation (B544)
  38
  - Accessory Check
    38
  - 1-Bin Tray Installation Procedure
    39
- Bridge Unit Installation (B538)
  45
  - Accessory Check
    45
  - Bridge Unit Installation Procedure
    46
- Two-Tray Finisher Installation (B545)
  48
  - Accessory Check
    48
  - Two-Tray Finisher Installation Procedure
    49
- Punch Unit Installation (B377)
  52
  - Accessory Check
    52
  - Punch Unit Installation Procedure
    53
- Ardf Installation (B714)
  56
  - Accessory Check
    56
  - Ardf Installation Procedure
    57
  - Ardf Skew Adjustment
    61
- Lct Installation (B543)
  62
  - Accessory Check
    62
  - Lct Installation Procedure
    63
- Platen Cover Installation (G329)
  65
- Booklet Finisher Installation (B546)
  66
  - Accessory Check
    66
  - Booklet Finisher Installation Procedure
    67
- 1000 Sheet Finisher (B408)
  72
  - Accessory Check
    72
  - 1000 Sheet Finisher Installation Procedure
    73
- Key Counter Installation
  76
- Anti-Condensation Heater
  79
- Tray Heater
  81
- Tray Heater (Optional Paper Tray Unit)
  81
- Tray Heater (Optional Paper Tray Unit)
  82
- Data Overwrite Security Unit (B735)
  84
  - Seal Check and Removal
    84
  - Installation
    85
- Copy Data Security Unit (B770)
  87
  - Accessories
    87
  - Installation
    88
  - Accessories
    89
- Scanner Accessibility Option (B815)
  90
  - Installation
    90
    
    Pre-Installation
    91
    
    On-Site Installation
    97
Preventive Maintenance Schedule

101
- Pm Table
  101
Replacement and Adjustment

105
- General Cautions
  105
  - Laser Unit
    105
  - Used Toner
    105
  - Special Tools and Lubricants
    106
  - Special Tools
    106
  - Lubricants
    106
- Front Door
  107
- Duplex Unit
  108
- Right Upper Cover
  109
- By-Pass Tray Unit
  110
- Rear Covers
  111
  - Rear Upper Cover
    111
  - Rear Lower Cover
    111
- Left Cover
  112
- Scanner Unit
  113
  - Ardf
    113
  - Exposure Glass
    114
  - Scanner Exterior Panels, Operation Panel
    115
  - Lens Block, Sbu Assembly
    116
  - Original Size Sensors
    117
  - Exposure Lamp
    118
  - Scanner Hp Sensor/Platen Cover Sensor
    119
  - Scanner Motor
    120
  - Lamp Stabilizer and Scanner Motor Drive Board
    121
  - Scanner Wire
    122
- Laser Unit
  126
  - Caution Decal Locations
    126
  - Laser Unit
    127
  - Polygon Mirror Motor
    129
  - Laser Synchronization Detector
    130
  - Ld Unit
    131
    
    Laser Beam Pitch Adjustment
    132
- Photoconductor Unit (Pcu)
  134
  - Pcu
    134
  - Drum
    135
  - Pick-Off Pawls
    137
    
    Pick-Off Pawl Position Adjustment
    137
  - Charge Roller and Cleaning Roller
    138
  - Drum Cleaning Blade 2
    139
  - Drum Cleaning Blade 1
    140
  - ID Sensor
    141
- Development
  142
  - Development Unit
    142
  - Development Filter
    143
  - Development Roller
    144
  - Developer
    145
  - Td Sensor
    147
- Transfer Unit
  148
  - Transfer Belt Unit
    148
  - Transfer Belt
    149
  - Transfer Belt Cleaning Blade and Toner Overflow Sensor
    150
- Paper Feed
  151
  - Pick-Up, Separation, and Feed Rollers
    151
  - Lower Right Cover
    152
  - Relay/Upper Paper Feed and Lower Paper Feed Clutches
    153
  - Upper Paper Feed Unit for Tray 1
    154
  - Lower Paper Feed Unit for Tray 2
    155
  - Paper End/Paper Height/Relay Sensors
    156
  - Registration Sensor
    157
  - Tray Lift Motor
    159
  - Feed/Development Motor
    160
  - Idle Roller Dust Blade
    161
  - Registration Roller Dust Blade
    162
- Fusing Unit
  163
  - Fusing Unit Removal
    163
  - Fusing Unit Exit Guide
    164
  - Hot Roller Strippers
    165
  - Fusing Lamps
    166
  - Thermistors and Thermostats
    168
  - Hot Roller/Pressure Roller
    169
  - Fusing Unit Side Fan
    171
  - Fusing Unit Corner Fan
    173
- By-Pass Tray
  174
  - Cover Replacement
    174
  - By-Pass Paper Feed and Pick-Up Roller Replacement
    175
  - By-Pass Separation Roller
    176
  - Paper End Sensor, Pick-Up Solenoid
    177
  - Paper Size Sensor Board Replacement
    178
  - By-Pass Table Removal
    179
  - Paper Feed Clutch Replacement
    180
- Duplex Unit
  181
  - Duplex Cover Removal
    181
  - Duplex Entrance Sensor Replacement
    182
  - Duplex Exit Sensor Replacement
    183
- Drive Area
  184
  - Registration Clutch, Transfer Belt Contact Clutch
    184
  - Main Motor
    185
  - Fusing/Exit Motor
    186
  - Toner Supply Motor
    187
- Printed Circuit Boards
  188
  - Nvram
    188
  - High Voltage Power Supply
    190
  - Iob
    191
    
    IOB DIP Switch Settings (SW101)
    192
  - Bicu Board
    193
  - Psu
    194
- Hdd, Controller Board
  195
- Copy Adjustments: Printing/Scanning
  196
  - Printing
    196
    
    Registration - Leading Edge/Side-To-Side
    196
    
    Blank Margin
    197
    
    Main Scan Magnification
    197
    
    Parallelogram Image Adjustment
    198
  - Scanning
    199
    
    Registration: Platen Mode
    199
    
    Magnification
    199
  - Adf Image Adjustment
    200
    
    Registration
    200
  - Touch Screen Calibration
    201
Troubleshooting

202
- Service Call Conditions
  202
  - Summary
    202
  - Sc Code Descriptions
    203
  - Sc Code Descriptions
    204
  - Recovery from Sc 925
    228
- Electrical Component Defects
  231
  - Sensors
    231
  - Switches
    233
- Blown Fuse Conditions
  233
- Leds
  234
- Test Points
  234
Service Tables

235
- Service Program Mode Operation
  235
  - Service Mode Lock/Unlock
    235
- Service Program Mode Tables
  236
  - Service Table Key
    236
  - Service Mode Lock/Unlock
    236
  - Service Tables
    237
    
    SP1-XXX: Feed
    237
    
    SP2-XXX: Drum
    241
    
    SP3-XXX: Process
    251
    
    SP4-XXX: Scanner
    253
    
    SP5-XXX: Mode
    269
    
    SP6-XXX: Peripherals
    308
    
    SP7-XXX: Data Log
    310
    
    SP8-XXX: Data Log2
    316
  - Test Pattern Printing: Sp2-902
    351
    
    Test Pattern Table (SP2-902-2: IPU Test Print)
    351
    
    Test Pattern Table: SP2-902-3 Printing Test Patterns
    352
  - Input Check
    353
    
    Main Machine Input Check: SP5-803
    353
    
    ARDF Input Check: SP6-007
    357
  - Output Check
    358
    
    Main Machine Output Check: SP5-804
    358
    
    ARDF Output Check: SP6-008)
    360
  - Smc Print out Lists: Sp5-990
    360
  - Nip Band Width Adjustment: Sp1-109
    361
  - Memory Clear: Sp5-801
    362
  - Software Reset
    364
  - System Settings and Copy Setting Reset
    364
    
    System Setting Reset
    364
    
    Copier Setting Reset
    365
- Updating the Firmware
  366
- Uploading/Downloading Nvram Data
  367
  - Uploading Nvram Data (Sp5-824)
    367
  - Downloading Nvram Data (Sp5-825)
    368
- Self-Diagnostic Mode
  369
  - Self-Diagnostic Mode at Power on
    369
  - Detailed Self-Diagnostic Mode
    370
    
    Executing Detailed Self-Diagnosis
    370
- User Program Mode
  372
  - How to Use up Mode
    372
    
    UP Mode Initial Screen: User Tools/Counter Display
    372
    
    System Settings
    372
    
    Copier/Document Server Features
    373
    
    Printer, Facsimile, Scanner Settings
    373
    
    Counter
    374
- Dip Switches
  375
- Using the Debug Log
  376
Detailed Section Descriptions

382
- Overview
  382
  - Component Layout
    382
  - Paper Path
    384
  - Drive Layout
    385
- Board Structure
  386
  - Block Diagram
    386
  - Controller
    388
- Copy Process Overview
  392
  - Exposure
    392
  - Drum Charge
    392
  - Laser Exposure
    392
  - Development
    392
  - Image Transfer
    393
  - Separation
    393
  - ID Sensor
    393
  - Cleaning
    393
  - Quenching
    393
- Scanning
  394
  - Overview
    394
  - Scanner Drive
    395
    
    Book Mode
    395
    
    ADF Mode
    395
  - Original Size Detection in Platen Mode
    396
- Image Processing
  398
  - Overview
    398
  - Sbu (Sensor Board Unit)
    399
  - Auto Image Density (Ads)
    400
  - Ipu (Image Processing Unit)
    401
    
    Overview
    401
  - Image Processing Modes
    402
  - Summary of Image Processing Functions
    404
  - Image Processing Steps and Related Sp Modes
    405
    
    Text Mode
    405
    
    Text/Photo Mode
    406
    
    Photo Mode
    407
    
    Pale (Low-Density Mode)
    408
    
    Generation Copy Mode
    409
  - Pre-Filtering
    410
  - Background Erase
    411
  - Independent Dot Erase
    412
  - Line Width Correction
    413
  - Filtering
    414
    
    Interactive SP Codes
    414
    
    Text Mode MTF Filter
    419
    
    Text/Photo, Photo Mode Filter
    420
    
    Pale, Generation Mode Filter
    421
    
    Photo Mode Smoothing for Dithering
    422
    
    Photo Mode Grayscale
    422
    
    Photo Mode Image Quality
    423
  - Others
    424
    
    Vertical Black Line Correction
    424
    
    Density Settings
    424
    
    ADS Level
    425
  - Practical Application of Sp Modes
    426
    
    Solving Problems
    426
    
    Recommended Settings for MTF Filters
    427
- Laser Exposure
  429
  - Overview
    429
  - Auto Power Control (Apc)
    430
  - Dual Beam Writing
    431
  - Laser Beam Pitch Change Mechanism
    432
  - Ld Safety Switches
    433
- Photoconductor Unit (Pcu)
  434
  - Overview
    434
  - Drum Cleaning
    435
  - Drive Mechanism
    436
  - Drum Pawls
    436
  - Drum Toner Seals
    436
- Drum Charge
  437
  - Overview
    437
  - Charge Roller Voltage Correction
    438
    
    Correction for Environmental Conditions
    438
  - Correction for Paper Width and Thickness
    439
  - ID Sensor Pattern Production Timing
    440
  - Drum Charge Roller Cleaning
    440
- Development
  441
  - Overview
    441
  - Drive Mechanism
    442
  - Developer Mixing
    442
  - Development Bias
    443
    
    Mechanism
    443
    
    Correction for Paper Width and Thickness (By-Pass Tray Only)
    443
  - Toner Supply
    444
    
    Toner Bottle Replenishment Mechanism
    444
    
    Toner Supply Mechanism
    445
    
    Toner Scatter Prevention
    446
    
    Sensor Control Mode
    447
    
    Image Pixel Count Mode
    448
  - Toner Near End/End Detection
    448
    
    Toner Near End
    448
    
    Toner End
    448
  - Toner End Recovery
    449
  - Toner Supply with Abnormal Sensors
    449
- Drum Cleaning and Toner Recycling
  450
  - Drum Cleaning
    450
  - Toner Recycling
    450
- Paper Feed
  451
  - Overview
    451
  - Paper Feed Drive
    452
  - Pick-Up and Separation Roller Release Mechanism
    452
  - Paper Lift
    453
  - Paper End Detection
    454
  - Paper Registration
    455
  - Paper Size Detection
    456
- By-Pass Tray
  457
  - Overview
    457
  - By-Pass Tray Operation
    458
  - By-Pass Paper Size Detection
    459
- Duplex Unit
  460
  - Overview
    460
  - Duplex Drive Layout
    461
  - Duplex Basic Operation
    462
    
    Longer than A4 Lengthwise/Lt Lengthwise
    462
    
    Up to A4 Lengthwise/Lt Lengthwise
    462
  - Duplex Unit Feed in and Exit Mechanism
    463
    
    Feed-In
    463
    
    Inversion and Exit
    463
- Image Transfer and Paper Separation
  464
  - Overview
    464
  - Belt Drive Mechanism
    465
  - Transfer Belt Unit Contact Mechanism
    465
  - Image Transfer and Paper Separation Mechanism
    466
  - Transfer Belt Charge
    467
    
    Mechanism
    467
    
    Correction for Paper Width and Thickness
    468
    
    Currents Applied to Leading Edge, Image Areas - By-Pass Feed
    469
  - Transfer Belt Cleaning Mechanism
    470
- Image Fusing and Paper Exit
  471
  - Overview
    471
  - Fusing Drive
    472
  - Fusing Drive Release Mechanism
    472
  - Fusing Entrance Guide Shift Mechanism
    473
  - Exit Guide Plate and De-Curler Rollers
    473
  - Pressure Roller
    474
  - Cleaning Mechanism
    475
  - Hot Roller Stripper Cleaning
    476
    
    Small Jobs
    476
    
    Medium Jobs
    477
    
    Large Jobs
    477
    
    SP Settings for Post-Job Cleaning
    478
  - Fusing Temperature Control
    479
    
    Temperature Control
    480
    
    Fusing Idling Temperature
    481
  - Cpm down for Thick Paper
    482
  - Cooling and Overheat Protection
    483
  - Overheat Protection
    484
- Energy Saver Modes
  485
  - Overview
    485
  - Energy Saver Mode
    486
    
    Entering the Energy Saver Mode
    486
    
    What Happens in Energy Saver Mode
    486
    
    Return to Stand-By Mode
    486
  - Auto off Mode
    487
    
    Entering off Stand-By and off Modes
    487
    
    Off Stand-By Mode
    487
    
    Off Mode
    488
    
    Returning to Stand-By Mode
    488
Specifications

489
- General Specifications
  489
  - Power Consumption
    490
  - Noise Emission
    490
- Machine Configuration
  491
- Optional Equipment
  493

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