Ricoh Aficio MP171 Field Service Manual page 9

3. Preventive Maintenance
Preventive Maintenance Tables...................................................................................................................... 29
Image Quality Standards................................................................................................................................ 30
Paper Transfer Quality Standards.................................................................................................................. 31
4. Replacement and Adjustment
General Cautions............................................................................................................................................. 33
Notes on the Main Power Switch............................................................................................................... 33
Characteristics of the Push Switch (DC Switch).................................................................................33
Shutdown Method...............................................................................................................................34
Forced Shutdown................................................................................................................................ 34
Exterior Covers................................................................................................................................................. 35
Front Cover...................................................................................................................................................35
Left Cover......................................................................................................................................................37
Right Cover...................................................................................................................................................39
Rear Cover, Rear Lower Cover...................................................................................................................41
Upper Cover................................................................................................................................................ 43
Operation Panel...........................................................................................................................................45
LED Optics........................................................................................................................................................ 47
LED Unit........................................................................................................................................................ 47
How to Re-engage Disengaged Springs.......................................................................................... 51
PCDU.................................................................................................................................................................55
PCDU............................................................................................................................................................ 55
Toner Cartridge................................................................................................................................................ 56
Toner Cartridge............................................................................................................................................56
Image Transfer..................................................................................................................................................58
Image Transfer Roller...................................................................................................................................58
Drive Unit.......................................................................................................................................................... 59
Main Motor.................................................................................................................................................. 59
Toner Supply Clutch.................................................................................................................................... 59
Registration Clutch....................................................................................................................................... 60
Paper Feed Clutch........................................................................................................................................61
Drive Unit...................................................................................................................................................... 61
Gear Unit......................................................................................................................................................62
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