Ricoh J012 Service Manual page 15

3.4 MAINTENANCE UNIT.............................................................................. 3-31
3.5 ENCODERS............................................................................................. 3-33
3.5.1 VERTICAL ENCODER WHEEL...................................................... 3-33
3.5.2 HORIZONTAL ENCODER STRIP .................................................. 3-36
3.6 BOARDS.................................................................................................. 3-38
3.6.1 PSU ................................................................................................ 3-38
3.6.2 HVPS .............................................................................................. 3-39
3.6.3 PRINTER ENGINE CTL BOARD, NVRAM ..................................... 3-40
If the control board is being replaced................................................. 3-42
3.6.4 DUPLEX UNIT DETECTION BOARD ............................................. 3-44
3.7 MOTORS ................................................................................................. 3-45
3.7.1 HORIZONTAL MOTOR................................................................... 3-45
3.7.2 VERTICAL MOTOR ........................................................................ 3-47
3.7.3 MAINTENANCE UNIT MOTOR ...................................................... 3-48
3.7.4 REAR FAN...................................................................................... 3-50
3.7.5 FRONT FAN ................................................................................... 3-51
3.8 SENSORS ............................................................................................... 3-52
3.8.1 VERTICAL ENCODER SENSOR ................................................... 3-52
3.8.2 CARRIAGE POSITION SENSOR ................................................... 3-53
3.8.3 INK LEVEL SENSOR...................................................................... 3-54
3.8.4 1ST REGISTRATION SENSOR ..................................................... 3-55
3.8.5 2ND REGISTRATION SENSOR..................................................... 3-56
3.8.6 SCANNER UNIT SENSOR ............................................................. 3-58
3.9 AIR RELEASE SOLENOID ...................................................................... 3-59
3.10 CLEANING PROCEDURES............................................................... 3-60
3.10.1 FLUSHING GATE CLEANING .................................................. 3-61
3.10.2 MAINTENANCE UNIT CLEANING............................................ 3-61
3.10.3 FEED ROLLER CLEANING ...................................................... 3-63
3.10.4 TRANSPORT BELT CLEANING ............................................... 3-64
3.10.5 FRICTION PAD CLEANING...................................................... 3-65
3.10.6 HORIZONTAL ENCODER STRIP CLEANING.......................... 3-66
Cleaning procedure ............................................................................ 3-66
3.11 SWAPPING THE ENGINE UNIT........................................................ 3-68
3.12 FIRMWARE UPDATE ........................................................................ 3-69
3.12.1 WHAT YOU NEED .................................................................... 3-69
Before You Begin............................................................................... 3-70
Update Procedure .............................................................................. 3-70
TROUBLESHOOTING
4. TROUBLESHOOTING ................................................................. 4-1
4.1 DISPLAY SUMMARY................................................................................. 4-1
4.1.1 OPERATION PANEL DISPLAY ........................................................ 4-1
4.1.2 DISPLAY MENU SUMMARY ............................................................ 4-2
4.2 STATUS REPORTS................................................................................. 4-13
4.2.1 1. PAGE COUNTER ....................................................................... 4-14
SM
CÓPIA NÃO CONTROLADA
iii
CÓPIA NÃO CONTROLADA
J012/J013/J014