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4.3.9
Installing the lamp harness .............................................................................. 4-23
4.3.10
Carriage wire / carriage-2 ................................................................................ 4-25
4.3.11
Platen sensor (S6) / Carriage home position sensor (S7) ............................... 4-26
4.3.12
SLG board (SLG)............................................................................................. 4-26
4.4
LASER OPTICAL UNIT................................................................................................... 4-27
4.4.1
Laser optical unit.............................................................................................. 4-27
4.5
PAPER FEEDING SYSTEM ........................................................................................... 4-29
4.5.1
Drawer ............................................................................................................. 4-29
4.5.2
Drawer feeding unit.......................................................................................... 4-29
4.5.3
Tray-up sensor (S16/S19) ............................................................................... 4-30
4.5.4
Empty sensor (S17/S20).................................................................................. 4-30
4.5.5
Paper stock sensor (S15/S18)......................................................................... 4-31
4.5.6
Separation roller ............................................................................................. 4-31
4.5.7
Feed roller ....................................................................................................... 4-32
4.5.8
Pickup roller .................................................................................................... 4-32
4.5.9
Drawer feed clutch (CLT4/CLT5) ..................................................................... 4-33
4.5.10
Bypass tray ...................................................................................................... 4-34
4.5.11
Paper width detection PC board (SFB)............................................................ 4-35
4.5.12
Bypass feed unit .............................................................................................. 4-36
4.5.13
Bypass separation pad ................................................................................... 4-37
4.5.14
Bypass feed roller /Bypass feed clutch (CLT3)................................................ 4-37
4.5.15
Bypass paper sensor (S12) ............................................................................. 4-38
4.5.16
Registration guide............................................................................................ 4-39
4.5.17
Registration sensor (S22) ................................................................................ 4-39
4.5.18
1st transport sensor (S21)) .............................................................................. 4-40
4.5.19
Feed cover....................................................................................................... 4-40
4.5.20
Transport roller ................................................................................................ 4-41
4.5.21
2nd transport sensor (S14) .............................................................................. 4-42
4.5.22
Feed cover opening/closing detection sensor (S13)........................................ 4-42
4.5.23
Flywheel........................................................................................................... 4-42
4.5.24
Registration roller clutch (CLT2) ...................................................................... 4-43
4.5.25
Upper tray-up motor (M11) .............................................................................. 4-44
4.5.26
Upper drawer detection switch (SW6) ............................................................. 4-45
4.5.27
Hi-speed clutch (CLT6) / Low-speed clutch(CLT7).......................................... 4-45
4.5.28
Lower drawer detection switch (SW7) ............................................................. 4-46
4.5.29
Lower tray-up motor (M12) .............................................................................. 4-47
4.5.30
Registration roller (rubber)............................................................................... 4-48
4.5.31
Registration roller (metal) ................................................................................ 4-49
4.6
DRIVE SYSTEM ............................................................................................................. 4-50
4.6.1
Main motor (M8) .............................................................................................. 4-50
4.6.2
Toner motor (M4)............................................................................................. 4-50
4.6.3
Main motor drive unit ....................................................................................... 4-51
4.6.4
Process unit fan (M2)....................................................................................... 4-51
4.7
DRUM RELATED SECTION........................................................................................... 4-52
4.7.1
Process unit ..................................................................................................... 4-52
4.7.2
Drum cleaner unit ............................................................................................ 4-52
4.7.3
Discharge LED................................................................................................. 4-54
4.7.4
Main charger.................................................................................................... 4-55
4.7.5
Main charger grid ............................................................................................ 4-55
4.7.6
Main charger cleaner ....................................................................................... 4-56
4.7.7
Needle electrode ............................................................................................ 4-56
4.7.8
Drum ............................................................................................................... 4-57
4.7.9
Drum cleaning blade ....................................................................................... 4-57
4.7.10
Drum separation finger .................................................................................. 4-58
4.7.11
Recovery blade ............................................................................................... 4-59
4.7.12
Ozone filter ..................................................................................................... 4-59
4.7.13
TRU fan (M9) ................................................................................................... 4-60
4.7.14
Transfer roller unit............................................................................................ 4-61
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