Ricoh D197 Service Manual page 15

Replacement Procedure ................................................................... 4-102
4.11.4 TRANSFER UNIT OPEN/CLOSE LED ................................... 4-103
4.11.5 TEMPERATURE/HUMIDITY SENSOR ................................... 4-104
4.11.6 FUSING ENTRANCE SENSOR .............................................. 4-105
4.11.7 TRANSFER UNIT OPEN/CLOSE SENSOR ........................... 4-106
4.12 DRIVE UNIT ..................................................................................... 4-107
4.12.1 DRUM/WASTE TONER MOTOR ............................................ 4-107
4.12.2 DEVELOPMENT MOTOR ....................................................... 4-107
4.12.3 FUSING/PAPER EXIT MOTOR (D197/D199 ONLY) .............. 4-107
4.12.4 FUSING MOTOR (D200/D201/D202 ONLY) ........................... 4-108
4.12.5 PAPER EXIT MOTOR (D200/D201/D202 ONLY) ................... 4-108
4.12.6 REGISTRATION MOTOR ....................................................... 4-108
4.12.7 PAPER FEED MOTOR ........................................................... 4-109
4.12.8 VERTICAL TRANSPORT MOTOR ......................................... 4-109
4.12.9 TRANSFER ROLLER CONTACT MOTOR ............................. 4-109
4.12.10 TONER HOPPER ................................................................ 4-110
4.12.11 TONER SUPPLY MOTOR ................................................... 4-112
4.13 FUSING UNIT .................................................................................. 4-114
4.13.1 FUSING UNIT ......................................................................... 4-114
Replacement .................................................................................... 4-114
4.13.2 FUSING ENTRANCE GUIDE PLATE ..................................... 4-117
Cleaning the Fusing Entrance Guide Plate ...................................... 4-117
4.13.3 FUSING EXIT GUIDE PLATE ................................................. 4-118
4.13.4 FUSING UPPER COVER ........................................................ 4-119
4.13.5 FUSING LOWER COVER ....................................................... 4-120
4.13.6 HEATING SLEEVE BELT UNIT .............................................. 4-121
Replacement .................................................................................... 4-122
To Clear SC544-02 or SC554-02 ..................................................... 4-123
4.13.7 PRESSURE ROLLER AND PRESSURE ROLLER BEARINGS4-124
Adjustment before Replacing the Pressure Roller and Pressure Roller
Bearings ........................................................................................... 4-124
Replacement .................................................................................... 4-124
4.13.8 THERMOSTAT UNIT .............................................................. 4-126
4.13.9 FUSING ROLLER TEMPERATURE SENSOR ....................... 4-126
4.13.10 PRESSURE ROLLER TEMPERATURE SENSOR .............. 4-126
4.13.11 FUSING THERMOPILE ....................................................... 4-127
4.13.12 NOTES WHEN REASSEMBLING THE FUSING UNIT ....... 4-128
Harness route: when looking at the bottom of the fusing unit ........... 4-128
Harness route: when looking at the side of the fusing unit ............... 4-128
SM xi D197/D198/D199/D200/D201/D202