Oki C9800 Series, Service & Troubleshooting Manual

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1.2 Cleaning the Printer
Perform the following general cleaning steps as indicated by the printer’s operating environment.
Caution
Never apply alcohol or other chemicals to any parts in the printer. Never use a damp cloth to clean
up toner. If you remove the Image Drum Units, place them in a light protective bags or similar
means to protect the drums as exposure to light can quickly degrade performance and result in
early failure.
1. Record number of sheets printed on a service log left with the printer.
2. Print several sheets of paper to check for problems or defects .
3. Turn off the printer.
4. Clean all fans to remove excess dust.
5. Ensure that all cover vents are clean and free of obstructions.
6. Remove any debris or foreign objects from the Transfer Unit, Fuser, and Imaging Units.
7. Vacuum loose toner from the printer interior using a Type II toner vacuum only.
8. Remove and clean the paper trays .
9. Clean / inspect all rubber rollers with a lint-free cloth slightly dampened with cold water.
Replace as necessary.
1.3 Cleaning the Imaging Unit Contacts
1. Open the Top Cover.
2. Remove the Imaging Units and place it on a stable surface.
3. Working quickly to reduce light exposure, clean the 4 contacts at the front of the Imaging Unit.
4. Clean the 3 contacts at the rear of the imaging unit.
5. Clean the contacts on the Housing Bias Assembly.