4.4.7
4.4.8
4.5
SCANNER UNIT ...................................................................................... 4-22
4.5.1
SCANNER FRONT COVER ........................................................... 4-22
4.5.2
Scanner Right Cover .......................................................................... 4-23
Scanner Left Cover ............................................................................ 4-23
4.5.3
4.5.4
EXPOSURE GLASS ....................................................................... 4-25
4.5.5
LED BOARD ................................................................................... 4-26
4.5.6
SCANNER MOTOR ........................................................................ 4-29
4.5.7
When reassembling ........................................................................... 4-30
4.5.8
LED DRIVE BOARD ....................................................................... 4-31
4.5.9
SCANNER HP SENSOR ................................................................ 4-32
4.5.10
COVER SENSOR ....................................................................... 4-33
4.5.11
4.5.12
4.6
LASER OPTICS ....................................................................................... 4-40
4.6.1
4.6.2
4.6.3
LASER UNIT ................................................................................... 4-41
4.6.4
POLYGON MOTOR ........................................................................ 4-43
4.6.5
4.7
PAPER TRANSFER ................................................................................ 4-45
4.7.1
TRANSFER ROLLER ..................................................................... 4-45
4.8
DRIVE SECTION ..................................................................................... 4-46
4.8.1
GEARBOX ...................................................................................... 4-46
4.8.2
MAIN MOTOR ................................................................................ 4-47
4.8.3
DUPLEX MOTOR ........................................................................... 4-48
4.8.4
4.8.5
RELAY CLUTCH ............................................................................ 4-49
4.8.6
PAPER FEED CLUTCH .................................................................. 4-50
M052/M053/M054
iv
SM