Canon ImageRunner iR8500 Series Service Manual page 616

Chapter 13
4
Points to Note When Cleaning/Replacing the Charging Wire or Replacing the Charging Wire Cleaner
At the end of the following, always check to make sure that the charging wire is in the middle of the charging wire cleaner; otherwise, image faults can
occur:
a. If you have cleaned the charging wire.
b. If you have replaced the charging wire.
c. If you have moved the charging wire cleaner by hand.
d. If you have replaced the charging wire.
No.
5
6
13-24
Clean the charging
assemblies:
- Charging wire (primary,
pre-transfer, transfer/
separation)
- Grid wire (primary
charging
assembly)
- Shielding plate (each
charging
assembly)
- Roller electrode
Step
Clean the optical path:
- No. 1/2/3 mirror
- Dust-proofing glass
- Scanner reflecting plate
- Standard white plate
Clean the scanner:
- Scanner cable
- Scanner rail
F-13-22
T-13-17
Correct
F-13-23
T-13-18
Wrong
T-13-19
Checks
Use a blower brush; if the
dirt is appreciable, use
alcohol.
Check the wire for tension. Check the scanner cable
Clean the slide portion, and only
apply silicone oil (FY9- at the first 250,000 copies.
6011).
Standard (single-sided)
Leading edge: 4.0
+1.5/-1.0 mm
Left/right: 2.5 ±1.5 mm
Trailing edge: 2.5 ±1.5
mm
Remarks