Sharp MX-4100N Service Manual page 333

(Note for servicing the transfer unit)
1. Prevention of oily dirt attachment
[Note]
• Be careful not to attach fingerprints or oily dirt on the transfer belt
surface. (Keep the transfer unit away from oil and dust.)
• When replacing the transfer belt, hold the edge section (within
10mm from the edge) of the transfer belt.
10mm
• When rotating the transfer belt manually, use a screwdriver to
turn the drive gear section as shown below.
• When installing the transfer unit, hold the handle to insert the unit
into the machine. When placing the transfer unit on the guide rail
of the machine and inserting the unit to the machine, the expo-
sure surface on both sides of the transfer belt may be touched
erroneously. Use enough care not to touch the exposure surface.
Also when the right door is opened, the exposure surface may be
touched. Use enough care in this case, too.
Exposure surface of the transfer belt
[Countermeasures]
If oily dirt is erroneously attached to the transfer belt surface, per-
form the following countermeasures.
1) Use alcohol to remove oily dirt from the transfer belt.
10mm
2) Wipe alcohol trail completely away from the transfer belt sur-
face. (If alcohol residue remains on the transfer belt, its image
may be printed on copy paper.)
3) Apply Kynar powder to the cleaning blade to prevent reverse
rotation of the cleaning blade.
[Check method]
Check to confirm that the transfer belt is free from fingerprints or
oily dirt and that alcohol residue are completely removed or not by
the following method.
• Make three continuous multi prints of half tone images on all the
surface of A3 (11" x 17") paper, and check the printed paper for
any alcohol residue images.
1) Open the front cover.
2) Remove the waste toner box.
MX-5001N MAINTENANCE 8 – 18
Exposure surface of the transfer belt
2
1