Ricoh K-C1 Manuals

Manuals and User Guides for Ricoh K-C1. We have 2 Ricoh K-C1 manuals available for free PDF download: Service Manual

Ricoh K-C1 Service Manual

Ricoh K-C1 Service Manual (250 pages)

Brand: Ricoh | Category: All in One Printer | Size: 8.15 MB

Table of Contents

Service Manual
1
Important Safety Notices
2
Table of Contents
4
1 Installation

15
- Installation Requirements
  15
  - Environment
    15
  - Machine Level
    16
  - Minimum Space Requirements
    17
  - Power Requirements
    17
- Copier Installation
  18
  - Power Sockets for Peripherals
    18
  - Accessory Check
    18
  - Installation Procedure
    19
- Platen Cover Installation
  22
  - Accessory Check
    22
  - Installation Procedure
    22
- Ardf Installation
  23
  - Accessory Check
    23
  - Installation Procedure
    23
- Adf Installation
  25
  - Accessory Check
    25
  - Installation Procedure
    25
- Two-Tray Paper Tray Unit Installation
  27
  - Accessory Check
    27
  - Installation Procedure
    27
- One-Tray Paper Tray Unit Installation
  30
  - Accessory Check
    30
  - Installation Procedure
    30
- Imb Installation
  33
  - Accessory Check
    33
  - Installation Procedure
    33
- Dram Installation
  34
- Anti-Condensation Heater Installation
  35
- Tray Heaters
  36
- Key Counter Installation
  41
2 Preventive Maintenance Schedules

43
- Pm Tables
  43
- How to Clear the Pm Counter
  45
3 Replacement and Adjustment

46
- General Cautions
  46
  - Pcu (Photoconductor Unit)
    46
  - Transfer Roller
    46
  - Scanner Unit
    46
  - Laser Unit
    47
  - Fusing Unit
    47
  - Paper Feed
    47
  - Important
    47
- Special Tools and Lubricants
  47
- Exterior Covers & Operation Panel
  48
  - Rear Cover
    48
  - Rear Lower Cover (Two-Tray Models Only)
    48
  - Copy Tray
    49
  - Left Upper Cover
    49
  - Front Upper Left Cover and Operation Panel
    49
  - Right Upper Cover
    49
  - Top Rear Cover
    49
  - Left Cover
    50
  - Front Long Cover
    50
  - Front Right Cover
    51
  - Right Rear Cover
    51
  - Right Door
    52
  - By-Pass Tray
    53
  - Left Lower Cover (Two-Tray Models Only)
    54
  - Right Lower Cover (Two-Tray Models Only)
    54
  - Platen Cover Sensor
    54
- Scanner Section
  55
  - Exposure Glass/Df Exposure Glass
    55
    
    Exposure Glass
    55
    
    DF Exposure Glass
    55
  - Lens Block
    56
  - Exposure Lamp, Lamp Stabilizer Board
    56
  - Original Width Sensor
    57
  - Original Length Sensor
    57
    
    Sensor Positions
    57
  - Changing the Original Sensor Positions (8K/16K)
    58
    
    Procedure
    59
  - Scanner Motor
    60
  - Scanner H
    60
  - Adjustment of 2Nd Scanner Position
    61
  - Adjustment of 1St and 2Nd Scanner Alignment
    62
- Laser Unit
  63
- Location of "Caution" Decal
  63
  - Toner Shield Glass
    64
  - Laser Unit
    64
  - Ld Unit
    65
  - Polygonal Mirror Motor
    65
  - Laser Unit Alignment Adjustment
    66
- Pcu Section
  67
  - Pcu
    67
  - Pick-Off Pawls
    67
  - Toner Density Sensor
    67
  - Opc Drum
    68
  - Charge Roller and Cleaning Brush
    69
  - Cleaning Blade
    69
  - Developer
    70
  - After Replacement or Adjustment
    71
- Toner Supply Motor
  72
- Paper Feed Section
  73
  - Paper Feed Roller
    73
  - Friction Pad
    73
  - Paper End Sensor
    73
  - Exit Sensor
    74
    
    Non-Duplex Models
    74
    
    Duplex Models
    74
  - By-Pass Feed Roller and By-Pass Paper End Sensor
    75
  - Registration Roller
    76
  - Registration Clutch
    77
  - Registration Sensor
    78
  - Upper Paper Feed Clutch and By-Pass Feed Clutch
    78
  - Relay Clutch
    79
  - Relay Sensor
    79
  - Lower Paper Feed Clutch
    79
  - Vertical Transport Sensor
    80
  - Paper Size Switch
    80
- Image Transfer
  81
  - Image Transfer Roller
    81
  - Image Density Sensor
    81
- Fusing
  82
  - Fusing Unit
    82
  - Thermistor
    82
  - Fusing Lamp
    83
  - Hot Roller
    83
  - Thermofuse and Thermostat
    84
  - Hot Roller Stripper Pawls
    84
  - Pressure Roller and Bushings
    85
  - Nip Band Width Adjustment
    86
- Duplex Unit (Duplex Models Only)
  87
  - Duplex Exit Sensor
    87
  - Duplex Entrance Sensor
    87
  - Duplex Inverter Sensor
    87
  - Duplex Transport Motor
    88
  - Duplex Inverter Motor
    88
  - Duplex Control Board
    88
- Other Replacements
  89
  - Quenching Lamp
    89
  - High-Voltage Power Supply Board
    89
  - Imb (Memory Board)
    90
  - Bicu (Base-Engine Image Control Unit)
    90
  - Iob (I/O Board)
    91
  - Main Motor
    91
  - Rear Exhaust Fan
    91
  - Left Exhaust Fan
    92
  - Psu (Power Supply Unit)
    92
  - Gearbox
    93
    
    Replacement Procedure
    93
    
    Gear Arrangement Within the Gearbox
    94
- Copy Adjustments: Printing/Scanning
  95
  - Printing
    95
    
    Registration - Leading Edge/Side-To-Side
    95
    
    Blank Margin
    96
    
    Main Scan Magnification
    96
  - Scanning
    97
    
    Registration: Platen Mode
    97
    
    Magnification
    98
    
    Standard White Density Adjustment
    99
  - Adf Image Adjustment
    100
    
    Registration and Blank Margin
    100
    
    Sub-Scan Magnification
    100
4 Troubleshooting

101
- Service Call Conditions
  101
  - Sc Code Descriptions
    102
- Electrical Component Defects
  108
  - Sensors
    108
  - Switches
    109
- Blown Fuse Conditions
  110
- Led Display
  110
  - Bicu
    110
  - Iob
    110
5 Service Tables

111
- Using Service Program Modes
  111
  - Accessing SP Modes
    111
  - Accessing Copy Mode from Within an SP Mode
    111
  - How to Select a Program Number
    112
  - To Input a Value or Setting for an SP Mode
    112
  - Sp Mode Tables
    113
    
    SP1-XXX (Feed)
    113
    
    SP2-XXX (Drum)
    116
    
    SP4-XXX (Scanner)
    121
    
    SP5-XXX (Mode)
    127
    
    SP6-XXX (Peripherals)
    134
    
    SP7-XXX (Data Log)
    136
  - Test Pattern Printing (Sp5-902)
    141
  - Input Check (Sp5-803)
    142
  - Output Check (Sp5-804)
    146
    
    Output Check Table
    146
  - Copy Jam History (Sp7-903)
    147
  - Smc Printing (Sp5-992)
    148
  - Original Jam History Display (Sp7-905)
    148
  - Memory All Clear (Sp5-801)
    149
    
    Using a Flash Memory Card
    149
    
    Without Using a Flash Memory Card
    150
  - Program Upload/Download
    151
    
    Program Download (SP5-827)
    151
    
    Program Upload (SP5-826)
    152
  - Nvram Data Upload/Download
    153
    
    NVRAM Data Download (SP5-825)
    153
    
    NVRAM Data Upload (SP5-824)
    154
  - Adf Aps Sensor Output Display (Sp6-901)
    156
  - Serial Number Input (Sp5-811)
    157
  - ID Sensor Error Analysis (Sp2-221)
    158
- User Tools
  159
  - How to Enter and Exit User Tools
    159
  - User Tools Table
    159
    
    System Setting Table
    159
    
    Copy Features Table
    160
6 Detailed Section Descriptions

161
- Overview
  161
  - Component Layout
    161
  - Paper Path
    163
  - Drive Layout
    164
- Board Structure
  165
  - Block Diagram
    165
    
    Bicu (Base Engine and Image Control Unit)
    166
    
    IOB (I/O Board)
    166
    
    SBU (Sensor Board Unit)
    166
    
    IMB (IMAC and Memory Board)
    166
- Copy Process Overview
  167
- Scanning
  169
  - Overview
    169
    
    Lamp Stabilizer Fuse
    169
  - Scanner Drive
    170
  - Original Size Detection in Platen Mode
    171
- Image Processing
  173
  - Overview
    173
  - Sbu (Sensor Board Unit)
    174
  - Auto Image Density (Ads)
    175
    
    In the SBU
    175
    
    In the IPU
    175
    
    By Original Type
    175
  - Ipu (Image Processing Unit)
    176
    
    Overview
    176
    
    Image Processing Modes
    177
    
    Image Processing Path
    178
    
    Original Modes
    179
    
    SP Modes for each Image Processing Step
    179
    
    Auto Shading
    181
    
    White Line Erase
    182
    
    Black Line Erase
    182
    
    Scanner Gamma (Γ) Correction
    183
    
    Main Scan Magnification
    184
    
    Mirroring for ADF Mode
    184
    
    Filtering
    185
    
    ID Gamma (Γ) Correction
    186
    
    Gradation Processing
    187
  - Imb (Memory Controller and Dram)
    188
  - Video Control Unit (Vcu)
    189
    
    Fine Character and Image (FCI)
    189
    
    Printer Gamma Correction
    189
- Laser Exposure
  190
  - Overview
    190
  - Auto Power Control (Apc)
    191
  - Ld Safety Switch
    192
- Photoconductor Unit (Pcu)
  193
  - Overview
    193
  - Drive
    194
- Drum Charge
  195
  - Overview
    195
  - Charge Roller Voltage Correction
    196
    
    Correction for Environmental Conditions
    196
  - ID Sensor Pattern Production Timing
    197
  - Drum Charge Roller Cleaning
    198
- Development
  199
  - Overview
    199
  - Drive
    200
  - Developer Mixing
    200
  - Development Bias
    201
  - Toner Supply
    202
    
    Toner Bottle Replenishment Mechanism
    202
    
    Toner Supply Mechanism
    203
  - Toner Density Control
    204
    
    Overview
    204
    
    Toner Density Sensor Initial Setting
    206
    
    Toner Concentration Measurement
    206
    
    Vsp/Vsg Detection
    206
    
    Toner Supply Reference Voltage (Vref) Determination
    206
    
    Toner Supply Determination
    206
    
    Toner Supply Motor on Time Determinations
    207
  - Toner Supply in Abnormal Sensor Conditions
    208
    
    ID Sensor
    208
    
    TD Sensor
    208
  - Toner Near End/End Detection and Recovery
    209
    
    Toner Near End Detection
    209
    
    Toner Near End Recovery
    209
    
    Toner End Detection
    209
    
    Toner End Recovery
    209
- Drum Cleaning and Toner Recycling
  210
  - Drum Cleaning
    210
  - Toner Recycling
    210
- Paper Feed
  211
  - Overview
    211
  - Paper Feed Drive Mechanism
    212
  - Paper Feed and Separation Mechanism
    212
  - Paper Lift Mechanism
    213
  - Paper End Detection
    213
  - Paper Size Detection
    214
    
    Paper Tray
    214
    
    By-Pass Tray
    215
  - Side Fences
    216
  - Paper Registration
    216
- Image Transfer and Paper Separation
  217
  - Overview
    217
  - Image Transfer Current Timing
    218
  - Transfer Roller Cleaning
    219
  - Paper Separation Mechanism
    219
- Image Fusing and Paper Exit
  220
  - Overview
    220
  - Fusing Drive and Release Mechanism
    220
  - Fusing Entrance Guide Shift
    221
  - Pressure Roller
    221
  - Fusing Temperature Control
    222
    
    Overview
    222
    
    Fusing Lamp Control
    224
    
    Fusing Temperature Control for Thick Paper at the By-Pass Tray
    225
    
    Pre-Heat Mode (Fusing Idling)
    225
    
    To Prevent Offset When Making Multiple Copies on Small-Width Paper
    225
    
    Reduced Copy Speed with Narrow Paper
    225
  - Overheat Protection
    226
- Duplex Unit
  227
  - Overall
    227
  - Drive Mechanism
    228
  - Basic Operation
    229
    
    Larger than A4 Short-Edge/Lt Short-Edge
    229
    
    Up to A4 Short-Edge/Lt Short-Edge
    230
  - Feed in and Exit Mechanism
    231
- Energy Saver Modes
  232
  - Low Power Mode
    233
    
    Returning to Stand-By Mode
    234
    
    What Happens in Night/Off Mode
    235
    
    Specifications
    236
    
    Duplex Unit (B043 Only)
    239
    
    Machine Configuration
    240
    
    Optional Equipment
    241
    
    One-Tray Paper Tray Unit
    243
    
    Two-Tray Paper Tray Unit
    244
- Electrical Component Layout
  246
- Stamp
  247

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Ricoh K-C1 Service Manual

Ricoh K-C1 Service Manual (19 pages)

Brand: Ricoh | Category: All in One Printer | Size: 0.21 MB

Table of Contents

Service Manual
1
Environment
7
Replacement and Adjustment
9
Drive Layout
10
Paper Feed
11
Sensors
12
- Laser Unit
  14
- Paper Feed Section
  16

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