Ricoh M156, Service Manual

Page: 7 / 169

SM iii M156/M157/M176/M177
4.8.3 QUENCHING LAMP ....................................................................... 4-33
4.9 FUSING AND EXIT .................................................................................. 4-34
4.9.1 FUSING UNIT ................................................................................. 4-34
Reinstallation ...................................................................................... 4-35
After installing a new fusing unit ......................................................... 4-36
4.9.2 THERMOSTAT ............................................................................... 4-36
4.9.3 THERMISTOR ................................................................................ 4-37
4.9.4 FUSING LAMP ............................................................................... 4-38
When reinstalling the fusing lamp ...................................................... 4-39
4.9.5 HOT ROLLER ................................................................................. 4-39
4.9.6 PRESSURE ROLLER ..................................................................... 4-41
4.9.7 HOT ROLLER STRIPPER PAWLS................................................. 4-42
4.9.8 PAPER EXIT SENSOR ................................................................... 4-42
4.10 DRIVE ................................................................................................ 4-43
4.10.1 MAIN MOTOR ........................................................................... 4-43
4.10.2 DRIVE UNIT .............................................................................. 4-43
4.10.3 DUPLEX MOTOR...................................................................... 4-44
4.11 ELECTRICAL COMPONENTS .......................................................... 4-45
4.11.1 LAYOUT OF PC BOARDS ........................................................ 4-45
4.11.2 MAIN BOARD ........................................................................... 4-46
When installing the new main board .................................................. 4-46
EEPROM ............................................................................................ 4-47
4.11.3 FCU ........................................................................................... 4-48
4.11.4 PSU ........................................................................................... 4-48
4.11.5 HVP ........................................................................................... 4-51
4.11.6 CHARGE TERMINAL CASE ..................................................... 4-52
4.11.7 COOLING FAN ......................................................................... 4-53
4.11.8 SPEAKER ................................................................................. 4-53
4.11.9 WIRELESS LAN BOARD (FOR M157, M177) .......................... 4-54
4.12 DUPLEX ............................................................................................. 4-55
4.12.1 RELAY SENSOR ...................................................................... 4-55
4.12.2 INVERTER SENSOR ................................................................ 4-55
4.13 IMAGE ADJUSTMENT ....................................................................... 4-56
4.13.1 REGISTRATION ADJUSTMENT .............................................. 4-56
User Adjustment ................................................................................. 4-56
Service Adjustment ............................................................................ 4-56
5. SERVICE TABLES ...................................................................... 5-1
5.1 SERVICE PROGRAM MODE .................................................................... 5-1
5.1.1 OVERVIEW ...................................................................................... 5-1