Advertisement
NP6251
Model
:
: PRIMARY CORONA ASSEMBLY, TRANSFER/SEPARATION CORONA ASSEMBLY
Location
Subject
: PREVENTING DIRT ON CORONA WIRE
Reason
: If the environment where the main unit is set up is bad (dusty environment), the corona wire becomes
dirty easily, and poor images result. Because of this, a design change has been made to improve the
cleaning of the corona wire.
: <Symptom>
Details
Poor images: Appearance of black spots
<Cause>
Dirt on the primary corona wire or the transfer corona wire
<Factory measures>
A strong polishing pad will be used to improve the cleaning of the corona wire. Because of this,
changes were made to the cleaner (cleaning block, felt folder) and guide pin.
: When the above problem is noted, replace (at the same time) the corona wire, cleaner (cleaning block,
Servicing
felt holder), and guide pin of the primary corona assembly or transfer corona assembly with the new parts.
Also, in order to stabilize the surface layer of the new corona wire, be sure to perform wire cleaning
5 times from the user mode or service mode after replacement of the wire from the old type to new.
NP6251:
Service Bulletin
Issued by Canon Europa N.V.
Perform wire cleaning (WIRE_CLN) in service mode (∗4∗) for machines with ROM
Ver. 7 installed. For machines with a ROM version before Ver. 7, perform wire
cleaning 5 times in user mode.
No.:
6251-019 Rev. 1
(FF-T01-H2-000037-02)
21.02.00
DATE:
COPIER
-
1 / 3 -
Advertisement
