Ricoh MT-P2 - Page 448

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When the front cover is open, the line connecting each LD driver on the LD control board is disconnected.

Laser Exposure

447

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Conventions Used in this Manual2
Safety Instructions4
- Responsibilities of the Service Technician4
- Before Installation, Maintenance5
- During Maintenance6
- After Installation8
Safety Instructions for Toner and Ink9
- Accidental Physical Exposure9
- Handling and Storing Toner and Ink9
- Toner and Ink Disposal10
Safety Precautions for this Machine12
- Laser Safety13
- Caution Labels13
- Lithium Batteries (Memory Back-Up)13
- Table of Contents14
Installation24
Installation Requirements24
- Operating Environment24
- Machine Level25
- Minimum Space Requirements25
- Dimensions26
- Peripheral/Option Summary Table26
- Power Requirements27
Main Machine (G148)29
- Accessory Check29
- Installation Procedure29
Call Light Installation44
- Accessory Check44
- Call Light Installation Procedure45
A3/DLT Feeder Kit (B475)47
- Accessory Check47
- Installation Procedure47
Lct (B473)51
- LCT (B473) Accessory Check51
- LCT Connection Unit (G845) Accessory Check51
- Installation Procedure53
8½" X 14" Paper Size Tray (B474)59
- Accessory Check (B474)59
- Installation Procedure60
3000-Sheet Finisher SR842 (B706)66
- Accessory Check66
- Installation67
Punch Unit (B531/A812)73
- Accessory Check73
- Installation74
Output Jogger Unit (B513)79
- Accessory Check79
- Installation79
2000-Sheet Finisher (B700)81
- Accessory Check81
- Installation82
Punch Unit (B702)90
- Accessory Check90
- Installation91
Output Jogger Unit (B703)95
- Accessory Check95
- Installation95
Cover Interposer Tray (B704)98
- Accessory Check98
- Installation99
Copy Tray (B756)108
- Accessory Check108
- Installation109
MFP Options111
- Overview111
- Common Procedures112
- Wireless LAN G813 (802.11B)114
- USB Host Interface Unit Type a (B819)115
- Ieee1284 B679116
- Gigabit Ethernet G874117
DOS Overwrite Security Unit (G874)119
- Before You Begin119
- Seal Check and Removal119
- DOS Unit Installation120
Preventive Maintenance122
PM Tables122
- Main Machine122
- Optional Peripheral Devices126
Replacement and Adjustment130
General Cautions130
- Drum130
- Drum Unit130
- Transfer Belt Unit131
- Laser Unit131
- Charge Corona131
- Development132
- Cleaning132
- Fusing Unit132
- Paper Feed133
- Used Toner133
Special Tools and Lubricants134
- Special Tools134
- Lubricants134
Operation Panel and External Covers135
- Operation Panel135
- Front Door136
- Right Covers136
- Left Covers137
- Rear Covers138
- Top Cover139
Laser Unit140
- Caution Decals140
- LD Unit and Polygon Motor141
- Laser Synchronization Detector Replacement143
- Laser Unit Alignment143
Drum Unit146
- Development Unit Removal146
- Charge Corona Unit149
- Charge Corona Wire and Grid150
- Charge Corona Wire Cleaning Pads151
- OPC Drum Removal152
- Quenching Lamp154
- Drum Potential Sensor155
- Cleaning Filter156
- Cleaning Blade156
- Cleaning Brush157
- Pick-Off Pawls158
- ID Sensor159
- Drum Motor160
- Toner Collection Bottle161
- Toner Separation Unit161
- Ozone Filters162
- Internal Dust Filter162
Development Unit164
- Developer Replacement164
- Development Filter166
- Entrance Seal and Side Seals167
- TD Sensor168
- Toner End Sensor168
- Toner Supply Motor169
- Development Motor171
Transfer Belt Unit173
- Transfer Belt Unit Removal173
- Transfer Belt Removal174
- Transfer Roller Cleaning Blade176
- Discharge Plate177
- Transfer Power Pack178
Fusing Unit179
- Fusing Unit Removal179
- Fusing Unit Thermistors and Thermostats180
- Web Cleaning Roller182
- Web Motor and Web End Sensor185
- Pressure Roller Cleaning Unit186
- Fusing Lamps, Hot Roller, and Pressure Roller187
- Pressure Roller191
- Stripper Pawls193
- Nip Band Width Adjustment194
- Fusing Unit Exit Sensor195
- Fusing/Exit Motor196
- Fusing Exit Sensor and Exit Unit Entrance Sensors197
Duplex Unit198
- Duplex Unit Removal198
- Duplex Unit Side-To-Side Adjustment199
- Jogger Fence Adjustment199
- Duplex Motors200
- Duplex Sensors202
- Duplex Jogger Belt Adjustment205
Paper Feed206
- Paper Tray Removal206
- Rear Fence Return Sensor Replacement208
- Rear Fence HP Sensor Replacement209
- Tandem Right Tray Paper Sensor Replacement210
- Bottom Plate Lift Wire Replacement211
- Tandem Tray Paper Size Change212
- Pick-Up, Feed, Separation Roller Replacement216
- Feed Unit217
- Separation Roller Pressure Adjustment219
- Relay Sensor220
- Registration Sensor221
Pcbs and HDD222
- BCU Board (Base Engine Control Unit)222
- Controller Board222
- IPU Board224
- Motherboard225
- Development Power Pack229
- PSU Board230
- Hdd230
- Nvram231
Print Image Adjustment234
Troubleshooting238
Overview238
- Important SP Codes238
- Program Download238
- Jam Detection244
- Timing Charts245
Service Mode249
- Service Call Conditions249
- SC Code Descriptions249
- Jam Codes285
- Additional SC Codes Printed in SMC Report286
Other Problems292
- Blown Fuse Conditions292
- Common Problems292
- Frequent Paper Jams293
Service Tables296
Service Program Mode296
- General Notes296
- Entering and Leaving the Service Program Mode296
- Printer Controller Service Mode297
- Printer Engine Service Mode298
- Leaving the SP Mode300
- SP Mode Print (SMC Print)300
- Memory Clear: SP5801301
- Test Pattern Printing303
- Updating the Firmware307
- Uploading/Downloading NVRAM Data313
Service Program Mode Tables315
- Service Table Key315
- Service Tables315
Input/Output Check407
- Printer Input Check: SP5803407
- Printer Output Check: SP5804415
- Finisher 1 Input Check: SP6121419
- Finisher 1 Output Check: SP6124421
- Finisher 2 Input Check: SP6122422
- Finisher 2 Output Check: SP6125423
DIP Switch Tables425
- BCU (Base Engine Control Unit)425
- Controller Board425
Using the Debug Log427
- Setting up "Save Debug Log427
- Retrieving the Debug Log from the HDD433
- More about Debug Log434
Details436
Overview436
- Paper Path (with Cover Interposer Tray)437
- Motor Overview438
Board Structure439
- Block Diagram439
- Component Descriptions439
Print Process Overview442
Laser Exposure444

Ricoh MT-P2 - Page 448

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