Oce 7050, Техническое и сервисное руководство, Страница: 220 / 275

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001
Cleaning / polishing the drum
Before cleaning the drum, make sure that the occurred problem is really related
to the drum. Therefore the following operations should be carried out:
■
Clean the corona units and wires
■
If necessary, replace the developer
■
Check the cleaning blade
Make some test copies of the service test original and check the quality as de-
scribed in 09 ORI
page 502 . Keep these copies for comparison with the copies
after cleaning.
If it is found necessary to clean and polish the drum, the following points must
be kept in mind:
■
Do not smoke during this operation
■
Collect used cotton wool and gloves used for cleaning in a plastic bag and
dispose it confirm the local laws and regulations.
■
Wash you hands well after the cleaning operation.
■
Never touch the surface with your fingers, the OPC will crack.
Use the test copies to locate the weak points on the drum and give these extra
attention during cleaning.
Procedure
1
Remove the drum and put it in the cleaning position (See 01-PHOT- page 402 )
2 Clean the sides of the drum surface with a dry cotton wool and then the rest of
the drum surface.
3
Apply a little cleaner P to a piece of cotton wool and moisten the edges of the
drum surface.
4 Take a new piece of cotton wool with cleaner P and moisten half of the remain-
ing dry surface.
5
Treat the second half with a new piece of cotton wool and cleaner P.
Required materials Code no.
Cleaner P 1987.995
Cleaner K 1929.023
Disposable gloves 2831.001
Plastic bags (20) 2813.013
Cotton wool 9714.529