Ricoh DD 5450, Field Service Manual, Page: 261 / 403

259
6
Chapter 6 Periodical Maintenance
3 Periodical Maintenance
Section to be checked Description Remarks
Glass Cleaning Clean with a soft and clean cloth.
Lamp Cleaning Clean with a soft and clean cloth.
Reflection mirror Cleaning Remove dust with a blower brush.
Thermal head Cleaning Clean with a Thermal head cleaning kit (R8-S0046).
(Do not damage the thermal head.)
Platen roller Cleaning Remove paper shreds. (Do not damage the platen
roller.)
Sensor Cleaning Remove dust with a blower brush.
Press roller Cleaning Remove paper shreds.
Drum exterior Cleaning Remove ink and paper shreds.
Paper feeding section Checking Paper is fed smoothly. Remove paper shreds.
Master making section Checking Paper is fed smoothly. Remove paper shreds.
Roller shaft / bearing Oiling Except for the pinch lever bearing section
Gear Greasing
Air pump Greasing
Escape cam Greasing
(1) Periodical Checking
No. Item Criterion Remarks
1 Paper feed roller 300,000 sheets or more
2 Paper separator unit 300,000 sheets or more
3 Thermal head About 20,000 masters
4 Drum unit Printing 1,000,000 sheets
5 Air pump Printing 1,000,000 sheets
6 Press roller 1,000,000 sheets
7 Drum gear 1,000,000 sheets
8 Sub separator 300,000 sheets
(2) Criteria for Replacing Primary Parts
3