Ricoh FT8880 Service Manual page 81

5 June 1992
7. Clean the pick-off pawls with alcohol.
8. Clean the drum surface using water. Then, use dry cloth.
Every 1.2M
1. Replace the ozone filter.
7. Cleaning Unit (every 150K)
1. Clean the unit inside.
2. Clean and inspect the entrance seal, the side seals, and the
cleaning filter.
3. Replace the cleaning blade, the flick blade, and the cleaning brush.
8. Development Unit (every 150K)
1. Clean the upper seal, the sleeve drive gear, and the timing belt
pulley.
2. Inspect the toner cartridge seals, the sleeve side seals, and toner
near end sensor feeler movement.
3. Replace the development filter, and the duct filter.
Every 300K
1. Replace the developer.
Every 300K
1. Replace the sleeve side seals and the sleeve drive gears.
9. Fusing Unit (every 150K)
1. Inspect the bushings and bearings for the hot and pressure rollers.
2. Inspect and clean the stripper pawls using a suitable solvent.
3. Clean the guide plates, the de-curling roller, and resin transport
rollers using a suitable solvent.
4. Clean the de-curing belt and the rubber transport rollers using
alcohol.
5. Clean the oil supply roller bushings using the suitable solvent.
6. Replace the oil supply roller.
PREVENTIVE MAINTENANCE SCHEDULE
4-35