General Cautions
SM 3-1 D014/D015/D078/D079
Replacement
Adjustment
3. REPLACEMENT AND ADJUSTMENT
3.1 GENERAL CAUTIONS
Never switch off either power switch while any of the electrical components are
operating. Doing so might cause damage to units such as the transfer belt, drum,
and development unit when they are pulled out of or put back into the copier.
3.1.1 DRUM
An organic photoconductor (OPC) drums are more sensitive to light and ammonia gas than
a selenium drum. Follow the cautions below when handling an OPC drum.
1. When a PCU unit is removed from the machine, always place it on the PCU stand
provided with the machine.
2. Never expose a drum to direct sunlight.
3. Never expose a drum to direct light of more than 1,000 Lux for more than a minute.
4. Never touch a drum surface with bare hands. If the drum surface is touched with a
finger or becomes dirty, wipe it with a dry cloth or clean it with wet cotton. Wipe with a
dry cloth after cleaning with wet cotton.
5. Never use alcohol to clean the drum (alcohol dissolves the drum surface).
6. Store drums in a cool, dry place away from heat.
7. Take care not to scratch the drum as the drum layer is thin and is easily damaged.
8. Never expose a drum to corrosive gases such as ammonia gas.
9. Dispose of used drums in accordance with local regulations.
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