Toshiba e-STUDIO4500c Service Manual page 23

3.4.1 CAUTION DECALS ........................................................................3-34
3.4.2 POLYGON MOTOR........................................................................3-35
3.4.3 LASER UNIT...................................................................................3-36
Adjustments After Laser Unit Replacement ........................................3-39
3.4.4 LASER SYNCHRONIZATION DETECTOR....................................3-40
3.5 PCU (POTO CONDUCTOR UNITS) .......................................................3-41
3.5.1 DEVELOPER REPLACEMENT ......................................................3-41
3.5.2 DEVELOPMENT GEARS ...............................................................3-49
3.5.3 CHARGE ROLLER UNIT................................................................3-50
3.5.4 DRUM AND CLEANING BLADE.....................................................3-51
Removing the OPC Drum ...................................................................3-51
Removing the Cleaning Blade.............................................................3-52
3.5.5 PCU CLEANING UNIT....................................................................3-54
3.5.6 TD SENSOR...................................................................................3-56
3.5.7 AFTER REPLACING THE PCU COMPONENTS
AND DEVELOPER .........................................................................3-57
3.6 TONER SUPPLY UNIT ...........................................................................3-59
3.6.1 STC PORT CLEANING ..................................................................3-59
3.6.2 CONNECTOR BOARD (CNB) ........................................................3-60
3.6.3 TONER PUMP ................................................................................3-61
3.6.4 TONER END SENSOR...................................................................3-62
3.6.5 TONER HOPPER MOTOR.............................................................3-63
3.7 PAPER TRANSFER UNIT .......................................................................3-64
3.7.1 RELAY SENSOR.............................................................................3-64
3.7.2 DOUBLE-FEED DETECTION SENSOR,
REGISTRATION SENSOR..............................................................3-65
3.7.3 PAPER TRANSFER UNIT...............................................................3-66
3.7.4 PAPER TRANSFER ROLLER, DISCHARGE PLATE .....................3-68
3.7.5 LUBRICANT BAR ............................................................................3-69
3.7.6 CLEANING BLADE..........................................................................3-70
3.7.7 PTR CLEANING BRUSH ROLLER .................................................3-71
3.7.8 PAPER TRANSPORT BELT, SEPARATION POWER PACK ........3-72
3.7.9 REGISTRATION MOTOR ...............................................................3-73
3.7.10 DOUBLE-FEED DETECTION LED...............................................3-74
3.8 IMAGE TRANSFER UNIT........................................................................3-75
3.8.1 ITB (Image Transfer Belt), BELT CLEANING UNIT ........................3-75
Disassembly and ITB Replacement ....................................................3-75
Reassembly of the Image ITB Unit and Belt Cleaning Unit .................3-77
Dusting the ITB with Lubricant Powder ...............................................3-79
3.8.2 ITB CLEANING BLADE, DUST COLLECTION UNIT .....................3-81
3.8.3 ITB CLEANING ROLLER, SCRAPER BLADE................................3-82
3.8.4 MUSIC AND ID SENSORS.............................................................3-83
3.8.5 IMAGE TRANSFER POWER PACK...............................................3-84
3.8.6 BELT POSITION SENSORS ..........................................................3-85
3.9 FUSING UNIT..........................................................................................3-86
3.9.1 FUSING BELT STRIPPERS ...........................................................3-86
3.9.2 FUSING UNIT .................................................................................3-87
3.9.3 FUSING EXIT SENSOR, ACCORDION JAM SENSOR .................3-88
3.9.4 PRESSURE ROLLER THERMOSTATS, THERMISTOR ...............3-89
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