Ricoh FW780 Service Manual - Page 96
Regular PM procedure, Around Drum
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1.2 REGULAR PM PROCEDURE 1. Make a copy Make a copy of OS-A1 chart. 2. Original Feed (every 3.6K) Clean the original table using alcohol. Inspect the 1st and 2nd press rollers. If they are dirty, clean them using alcohol. Original Feed (every 7.2K) 3. Optics (every 3.6K) 4. Around Drum (every 3.6K) 1. Clean the first and second original feed rollers using alcohol. 2. Clean the first and second press rollers using alcohol. 1. Clean the reflection plate using alcohol. 2. Clean the exposure glass using water. 3. Clean the exposure lamp using water if necessary. 4. Clean the fiber optics array using lens paper if necessary. NOTE: After removing the drum, wrap it in clear sheets of paper to protect it. 1. Clean the charge corona wire, T& S corona wires and grid wires using a dry cloth. (Do not expand the corona wires.) 2. Clean the T/S corona end blocks, casing using a dry cloth. 3. Clean the pick-off pawls using a dry cloth. 4. Clean the pre-transfer lamp if it is dirty. 5. Clean the quenching lamp if it is dirty. A163 4-4 SM