Ricoh M052 Service Manual page 9

4.8.7 REGISTRATION CLUTCH ............................................................. 4-50
4.9 PAPER FEED .......................................................................................... 4-51
4.9.1 PAPER FEED ROLLER .................................................................. 4-51
4.9.2 FRICTION PAD .............................................................................. 4-52
When reassembling the friction pad ................................................... 4-52
4.9.3 PAPER END SENSOR ................................................................... 4-53
4.9.4 REMAINING PAPER SENSORS .................................................... 4-53
4.9.5 REGISTRATION SENSOR ............................................................. 4-54
4.9.6 BY-PASS PAPER SENSOR ........................................................... 4-54
4.9.7 DUPLEX RELAY SENSOR ............................................................. 4-55
When reassembling the duplex relay sensor ...................................... 4-55
4.9.8 JUNCTION GATE 1 SOLENOID .................................................... 4-56
4.9.9 JUNCTION GATE 2 SOLENOID .................................................... 4-57
4.9.10 FUSING EXIT SENSOR (M053 MODEL ONLY) ........................ 4-58
4.9.11 PAPER OVERFLOW SENSOR (M052/M053 MODELS ONLY) . 4-58
4.10 FUSING .............................................................................................. 4-59
4.10.1 FUSING UNIT ............................................................................. 4-59
4.10.2 HOT ROLLER AND PRESSURE ROLLER SECTIONS ............. 4-60
4.10.3 FUSING LAMP ........................................................................... 4-61
4.10.4 HOT ROLLER ............................................................................. 4-62
4.10.5 FUSING THERMISTOR ............................................................. 4-63
4.10.6 THERMOSTATS ......................................................................... 4-63
4.10.7 PRESSURE ROLLER ................................................................. 4-64
4.10.8 FUSING CLEANING ROLLER .................................................... 4-64
4.11 DUPLEX UNIT ................................................................................... 4-65
4.11.1 DUPLEX UNIT ............................................................................ 4-65
4.11.2 DUPLEX INVERTER MOTOR .................................................... 4-66
4.11.3 DUPLEX EXHAUST FAN ........................................................... 4-67
4.11.4 DUPLEX INVERTER SENSOR .................................................. 4-69
4.11.5 DUPLEX ENTRANCE SENSOR ................................................. 4-70
4.12 ELECTRICAL COMPONENTS .......................................................... 4-71
4.12.1 CONTROLLER UNIT .................................................................. 4-71
4.12.2 HDD UNIT ................................................................................... 4-72
4.12.3 HDD CONTROL BOARD ............................................................ 4-73
4.12.4 NVRAM ....................................................................................... 4-73
When reinstalling a new NVRAM ....................................................... 4-74
4.12.5 EEPROMS .................................................................................. 4-76
When reinstalling a new EEPROM ..................................................... 4-76
SM v M052/M053/M054