Toshiba e-STUDIO6520C Service Handbook page 357

* F2: Drum
• Handling precautions
If fingerprints or oil adhere to the surface of the drum, its properties may degrade, affecting
the quality of the copy image. So, wear gloves to avoid touching the drum surface with your
bare hands. Be sure to handle the drum carefully when installing and removing it so as not to
damage its surface.
After you installed the process unit to the equipment, there may be grease at the inner side of
the drum flange (shown as "B" in the figure below) that was transferred from the drum
coupling. So hold the levers (shown as "A" in the figure below) when you hold the drum or the
drum cleaner unit. Do not hook your finger on the flange hole on the rear side.
• Clearing the drum counter
When the drum has been replaced with a new one, the drum counter for the new drum (K, Y,
M, C) must be cleared to 0 (zero). This clearing can be performed in PM support mode.
- Drum counter
Drum (K): 08-1150-0, 3, 6, 7
Drum (Y): 08-1152-0, 3, 6, 7
Drum (M): 08-1154-0, 3, 6, 7
Drum (C): 08-1156-0, 3, 6, 7
• Storage location of drums
The drum should be stored in a dark place where the ambient temperature is between 10°C
to 35°C (no condensation). Be sure to avoid places where drums may be subjected to high
humidity, chemicals and/or their fumes.
Do not place the drum in a location where it is exposed to direct sunlight or high intensity light
such as near a window. Otherwise the drum will fatigue, and will not produce sufficient image
density immediately after being installed in the equipment.
• Cleaning the drum
At periodic maintenance calls, wipe the entire surface of the drum clean using the designated
cleaning cotton. Note that there is no need to clean the surface of the new drum unless there
is a problem. Use sufficiently thick cleaning cotton (dry soft pad) so as not to scratch the drum
surface inadvertently with your fingertips or nails. Also, remove your rings and wristwatch
before starting cleaning work to prevent accidental damage to the drum.
Do not use alcohol, selenium refresher and other organic solvents or silicon oil as they will
have an adverse effect on the drum.
Also clean the doctor blade when the drum is being replaced.
• Scratches on drum surface
If the surface is scratched in such a way that the aluminum substrate is exposed, no copy
image will be produced on this area. In addition, the cleaning blade will be damaged so
replacement with a new drum will be necessary.
© 2008-2011 TOSHIBA TEC CORPORATION All rights reserved
A
B
Fig. 5-21
5 - 25
e-STUDIO5520C/6520C/6530C
PREVENTIVE MAINTENANCE (PM)
5