SM vii D023/D025
4.6.1 CAUTION DECAL LOCATION...................................................4-39
4.6.2 LASER OPTICS HOUSING UNIT..............................................4-40
Preparing the new laser optics housing unit..................................4-40
Before removing the old laser optics housing unit.........................4-40
Recovery procedure for no replacement preparation
of laser optics housing unit............................................................4-41
Removing the old laser optics housing unit...................................4-42
Installing a new Laser Optics Housing Unit...................................4-43
After installing the new laser optics housing unit...........................4-43
4.6.3 POLYGON MIRROR MOTOR AND DRIVE BOARD .................4-45
4.7 IMAGE CREATION.............................................................................4-47
4.7.1 PCU ...........................................................................................4-47
4.7.2 DRUM UNIT AND DEVELOPMENT UNIT.................................4-48
Developer......................................................................................4-50
4.7.3 TONER COLLECTION BOTTLE................................................4-52
4.7.4 SECOND DUCT FAN ................................................................4-53
When reinstalling the second duct fan...........................................4-54
4.7.5 THIRD DUCT FAN.....................................................................4-55
When reinstalling the third duct fan ...............................................4-55
4.7.6 TONER PUMP UNIT..................................................................4-56
When you install the new toner pump unit.....................................4-58
4.7.7 TONER END SENSOR..............................................................4-61
4.8 IMAGE TRANSFER ............................................................................4-62
4.8.1 IMAGE TRANSFER BELT UNIT................................................4-62
4.8.2 IMAGE TRANSFER BELT CLEANING UNIT.............................4-63
4.8.3 IMAGE TRANSFER BELT .........................................................4-64
When reinstalling the image transfer belt ......................................4-66
4.9 PAPER TRANSFER............................................................................4-68
4.9.1 PAPER TRANSFER ROLLER UNIT..........................................4-68
4.9.2 PAPER TRANSFER UNIT .........................................................4-69
4.9.3 HIGH VOLTAGE SUPPLY BOARD - DISCHARGE PLATE.......4-71
4.9.4 ID SENSOR BOARD .................................................................4-72
Cleaning for ID sensors.................................................................4-72
After installing a new ID sensor unit/board....................................4-73
4.9.5 TEMPERATURE AND HUMIDITY SENSOR.............................4-74
4.10 DRIVE UNIT..................................................................................4-75
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