Ricoh MP 7503SP Field Service Manual page 588

4. Replacement and Adjustment
• Never touch the surface of the drum.
• Never attempt to clean the surface of the drum with alcohol or any other type of organic
solvent.
• Never place the drum where it would be exposed to strong light, or sunlight.
8. Before installing a new drum, dust the surface of the OPC drum carefully with setting powder.
• The surface of a new drum is dry, so you must apply Drum Setting Powder (P/N: 54429101)
to the drum surface before installation.
• Without the drum powder which acts as a lubricant, the drum cleaning blade could scour the
drum surface.
• If setting powder is not available, use some used toner. However, this could cause dirty
backgrounds on the first several copies.
9. Apply the setting powder by tapping the powder bag across the surface of the drum.
10. Cover the entire length of the drum over a 45-90 degree portion [A] (about 1/4 of the total drum
surface). Apply enough powder so the area turns white.
11. Install the new drum in the OPC unit so that the forward edge of the powdered surface [B] faces the
cleaning blade [C].
12. Manually rotate the drum once clockwise [D] until it stops again at the position where you started.
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