Ricoh Aficio MP201SPF Service Manual page 16

4.5.1 FUSING UNIT ................................................................................. 4-14
4.5.2 EXIT SENSOR ................................................................................ 4-15
4.5.3 HOT ROLLER STRIPPER PAWLS................................................. 4-16
4.5.4 HOT ROLLER AND FUSING LAMP ............................................... 4-17
4.5.5 THERMOSWITCHES AND THERMISTOR .................................... 4-18
4.5.6 PRESSURE ROLLER ..................................................................... 4-19
4.5.7 CHECKING THE NIP BAND ........................................................... 4-20
4.6 PCU AND QUENCHING LAMP ............................................................... 4-21
4.6.1 PCU ................................................................................................ 4-22
4.6.2 QUENCHING LAMP ....................................................................... 4-23
4.7 EXHAUST FAN AND MAIN MOTOR ....................................................... 4-24
4.7.1 EXHAUST FAN ............................................................................... 4-24
4.7.2 MAIN MOTOR ................................................................................ 4-25
4.8 PAPER FEED .......................................................................................... 4-26
4.8.1 PAPER FEED ROLLER AND FRICTION PAD ............................... 4-26
4.8.2 PAPER END SENSOR ................................................................... 4-26
4.8.3 REGISTRATION SENSOR ............................................................. 4-27
4.8.4 BYPASS PAPER END SENSOR .................................................... 4-28
4.8.5 BYPASS FEED ROLLER ................................................................ 4-29
4.8.6 BYPASS FEED CLUTCH AND FRICTION PAD ............................. 4-30
4.8.7 PAPER FEED AND REGISTRATION CLUTCHES ........................ 4-31
4.9 IMAGE TRANSFER ................................................................................. 4-32
4.9.1 TRANSFER ROLLER ..................................................................... 4-32
4.9.2 ID SENSOR AND DUPLEX ROLLER ............................................. 4-33
4.9.3 DISCHARGE PLATE ...................................................................... 4-34
4.10 BICU AND CONTROLLER BOARD ................................................... 4-35
4.10.1 BICU ........................................................................................... 4-35
Preparation ......................................................................................... 4-35
Procedure ........................................................................................... 4-35
4.10.2 CONTROLLER BOARD ............................................................. 4-36
Preparation: ........................................................................................ 4-36
Procedure ........................................................................................... 4-36
When installing a new controller board............................................... 4-39
When replacing the NVRAM on the controller board .......................... 4-40
4.11 OTHER REPLACEMENTS ................................................................ 4-42
4.11.1 DUPLEX MOTOR ....................................................................... 4-42
4.11.2 HIGH-VOLTAGE POWER SUPPLY BOARD ............................. 4-43
4.11.3 PSU ............................................................................................ 4-44
D115/D116 iv SM