Ricoh G104 Service Manual

Ricoh

All in One Printer

📖  Manuals supported for 2 models of Ricoh

  • G160
  • G161

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Table of Contents
  • Service manual

    1
  • G104/G160/G161

    13
  • Important safety notices

    21
  • Laser safety

    22
  • Symbols and abbreviations

    23
  • INSTALLATION

    31
  • MACHINE SPACE REQUIREMENT

    32
  • MACHINE INSTALLATION

    33
  • INSTALLING THE TONER BOTTLE

    35
  • LOADING PAPER

    37
  • CONNECTING THE POWER CORD

    39
  • SELECTING THE PANEL DISPLAY LANGUAGE

    40
  • OPTIONAL UNIT INSTALLATION

    41
  • METER CHARGE

    42
  • TRAY HEATER

    43
  • Preventive maintenance

    45
  • PREVENTIVE MAINTENANCE

    47
  • SERVICE MAINTENANCE

    48
  • Replacement and adjustment

    49
  • REPLACEMENT AND ADJUSTMENT

    51
  • ELECTRICAL COMPONENTS

    52
  • IOB (INPUT/OUTPUT BOARD)

    54
  • PSU (POWER SUPPLY UNIT) BOARD

    55
  • SUPPLY BOARD 2

    56
  • LASER OPTICS

    57
  • Color registration adjustment

    58
  • Polygon mirror motor

    60
  • Laser synchronizing detector boards

    61
  • Paper feed

    62
  • Paper friction pad

    63
  • By-pass feed roller, friction pad

    64
  • Registration sensor

    65
  • Paper feed motor

    68
  • Color development motor, color opc motor

    70
  • Transfer belt contact motor

    71
  • Transfer roller contact motor

    72
  • Drive unit

    73
  • Inverter sensor

    74
  • Duplex motor and inverter motor

    75
  • Fusing unit

    76
  • Fusing lamp

    77
  • Fusing exit sensor and paper exit sensor

    78
  • Fan direction

    79
  • Gamma adjustment

    80
  • Troubleshooting

    83
  • Process control result

    85
  • Service call conditions

    86
  • Sc code descriptions

    87
  • Troubleshooting guide

    105
  • Light print

    106
  • Dirty background

    108
  • Electrical component defects

    111
  • Blown fuse conditions

    113
  • Service tables

    115
  • Service program mode

    117
  • Accessing the required program

    118
  • Service mode table

    121
  • Bit switch programming

    125
  • Engine service mode

    126
  • Output check table

    214
  • Firmware update

    216
  • File arrangement

    217
  • Error handling

    219
  • Nvram data upload/download

    220
  • Downloading nvram data

    221
  • Error code table

    222
  • Sd card appli move

    223
  • Move exec

    224
  • Undo exec

    225
  • Detailed section descriptions

    227
  • Paper path

    230
  • Drive layout

    231
  • Board structure

    232
  • Printing process

    234
  • Process control

    236
  • Potential control

    237
  • Toner supply control

    240
  • Developer initialization

    244
  • Paper feed drive

    246
  • Paper tray

    247
  • Near-end detection

    249
  • By-pass tray feed and size detection

    250
  • Laser exposure

    254
  • Optical path

    255
  • Laser synchronizing detector

    256
  • Ld safety switch

    257
  • Automatic line position adjustment

    258
  • Adjustment conditions

    260
  • Main scan skew adjustment

    262
  • Ldu shutter

    263
  • Photoconductor unit

    264
  • Drive and drive gear position sensor

    265
  • Initialization process and sc codes

    266
  • Drum charge and quenching

    267
  • Drum cleaning

    268
  • Waste toner collection

    269
  • Pcu detection (development unit detection)

    271
  • Error message

    272
  • Developer mixing

    275
  • Development bias

    276
  • Toner supply mechanism

    277
  • Image transfer

    278
  • Transfer belt unit detection

    279
  • Transfer belt drive and transfer belt roller

    280
  • Transfer belt contact

    281
  • Transfer belt cleaning

    282
  • Transfer roller unit

    283
  • Transfer roller contact

    285
  • Fusing temperature control

    287
  • Specifications

    295
  • General specifications

    297
  • Supported paper sizes

    299
  • Software accessories

    300
  • Machine configuration

    301
  • Optional equipment

    302
  • G160/G161

    305
  • Read this first

    309
  • Installation procedure

    315
  • User replaceable items

    319
  • Before you start

    323
  • Caution decal locations

    324
  • Controller board

    331
  • Installing the new nvram

    332
  • Process control results

    335
  • Dark vertical line on prints

    368
  • Background stain

    370
  • Power supply unit

    376
  • Entering the service mode

    381
  • Display on the control panel screen

    382
  • Input check table

    539
  • Types of firmware

    545
  • Sd card application move

    546
  • Keeping the sd card

    548
  • Before you begin

    551
  • Component layout

    552
  • Low image coverage

    560
  • Toner end detection

    561
  • Toner end recovery

    562
  • Summary of each adjustment

    565
  • Overheat protection

    572
  • PAPER FEED UNIT TYPE 4000 G392

    589
  • Paper feed unit

    591
  • Paper feed motor and drive board

    592
  • Paper feed clutch

    593
  • Paper end, paper near end, and paper feed

    594
  • Friction pad

    595
  • Detailed descriptions

    596
  • Electrical component layout

    597
  • Paper feed and separation

    598
  • Paper lift

    599
  • Paper near-end/end detection

    600
  • Paper size detection

    601