Sharp AR-121E Service Manual page 19

AR-150E
B. Drum unit
1) Check the external view.
• Check for damage or cracks on the boss and the boss hole.
• Check to insure that the waste toner pipe shutter slides smooth-
ly.
• Check to insure that the star ring and the CRU washer rotate
smoothly.
2) Remove the drum cover. (4 Lock Tabs)
3) Remove the drum fixing plate and the photoconductor drum.
(Note) Dispose the drum fixing plate which was removed.
C
(2)
4) Check the cleaning blade and the red felt for no damage.
• If there is any damage, execute all procedures from item 5) and
later.
• If there is no damage, execute the procedure of item 12).
5) Remove the main charger.
(Cleaning the screen grid and the sawteeth.)
6) Remove the cleaning blade.
Note: Dispose the cleaning blade which was removed.
3 – 6
(3)