Ricoh FT8880 Service Manual page 80

PREVENTIVE MAINTENANCE SCHEDULE
Every 600K
1. Clean the registration roller using water.
2. Adjust the 2nd tray drive chain tension.
Every 1.2M
1. Replace the paper dust cleaning roller and the dust pan.
4. Duplex Unit (every 150K duplex copies)
1. Clean the pick-up roller using water.
2. Clean the anti-static brushes.
3. Replace the paper feed and separation rollers.
Every 300K duplex copies
1. Replace the pick-up roller.
5. RDH (every 150K originals)
1. Clean the sensor pads using the blower brush.
2. Clean the transport belt using the belt cleaner or alcohol.
Every 600K originals
1. Replace the transport belt.
2. Clean the feed-in belt, feed rollers, transport rollers, inverter
rollers, and exit rollers using alcohol.
6. Around The Drum (every 150K)
1. Clean the casing of the charge, T & S, and Pre-transfer corona
units. Use water first and then use alcohol.
2. Replace the corona wires and the wire cleaner pads.
3. Clean the charge corona unit brush seal.
4. Replace the toner filter.
5. Clean the drum potential sensor and the drum thermistor using a
dry cloth or blower brush.
6. Clean the erase lamp, the QL filter, and the ID sensor using water.
4-34
5 June 1992