Read Sharp MX-2301N (serv.man30) Technical Bulletin online
Sharp Electronics (UK) Ltd., Document Systems Support
Ref: CCE-1076 WHITE STREAK/S DUE TO THE
DOCTOR COVER SEAL OR INNER BLADE
TEARED WEAR.
1. Model Name:
MX-4100N/4101N/5000N/5001N, MX-4112N/5112N, MX-1800N/2300N/2700N, MX-2301N
/2600N/3100N, MX-3500N/3501N/4500N/4501N, MX-5500N/6200N/7000N/6201N/7001N
/2600N/3100N, MX-3500N/3501N/4500N/4501N, MX-5500N/6200N/7000N/6201N/7001N
2. Symptom:
Doctor cover seal or Inner blade in DV unit after approx. 600K is tearing off and
pieces of this material work there way into DV unit. This could then cause image quality
issues (white streaks).
pieces of this material work there way into DV unit. This could then cause image quality
issues (white streaks).
The level of degradation varies depends on the usage environment etc.
3. Field Action
Check Doctor cover seal or Inner blade when replacing developer during regular
maintenance etc. If there is any failure or tear replace the failed part.
As a replacement method, re-adhesion of the single unit of Doctor cover seal or Inner
blade, or the replacement of entire DV cover R unit is available.
Part code of Doctor cover seal, Inner blade, and DV cover R unit for each model is as
shown below: (See separate sheet for adherence point of Doctor cover seal and Inner
blade.)
Target Models
Part Name
Part Code
MX-4100N/4101N/5000N/5001N
MX-4112N/5112N
MX-4112N/5112N
Doctor cover
seal
seal
UCLEZ0215FCZZ
MX-1800N/2300G/2700G/2300N/2700N
MX-3500N/3501N/4500N/4501N
MX-5500N/6200N/7000N
MX-3500N/3501N/4500N/4501N
MX-5500N/6200N/7000N
Inner blade
UCLEZ0192FCZZ
MX-2301N/2600N/3100N
MX-6201N/7001N
MX-6201N/7001N
UCLEZ0201FCZZ
MX-4100N/4101N/5000N/5001N
DV cover R unit
CCOVP1846DS56
MX-4112N/5112N
CCOVP1846DS57
MX-1800N/2300N/2700N,
MX-3500N/3501N/4500N/4501N
MX-5500N/6200N/7000N
MX-3500N/3501N/4500N/4501N
MX-5500N/6200N/7000N
CCOVP1846DS52
MX-2301N/2600N/3100N
CCOVP1846DS54
MX-6201N/7001N
CCOVP1846DS55
TECHNICAL BULLETIN
Date:
8
th
February 2013
Model:
See Below
Ref.:
CCE-1076
Colour:
White
Page:
1 of 3
Sharp Electronics (UK) Ltd., Document Systems Support
How to check Doctor cover seal and Inner blade
(1) Remove two screws fixed to DV cover R unit.
(2) Remove the parts in the order of pawl in center, boss in rear side, and boss in front side and
then remove DV cover R unit
(3) Clean up DV cover R unit and see if there is any problem with Doctor cover
seal
or Inner
blade inside.
(4) If there is any failure part or torn part in Doctor cover
seal
or Inner blade, replace the part.
(See separate sheet for adherence point of Doctor cover
seal
and Inner blade.)
When removing the pawl in center, insert flat-
blade screwdriver in the space shown in the
photo, lift up the cover and remove.
When removing the boss in rear side, insert flat-
blade screwdriver in the space shown in the photo,
deflect the cover toward left and remove.
After removing the pawl in the centre and
the boss in rear side, shift the cover
toward right and then remove boss in
front side.
Sharp Electronics (UK) Ltd., Document Systems Support
- Adherence point of Doctor cover seal
- Reference point for adherence of Doctor cover seal
- Adherence point of Inner blade
- Reference point for adherence of Inner blade
.
DV Cover R
Doctor Cover seal
0
-
0
.3
m
m
0 - 0.3mm
Reference point (on the edge of protruding
Reference point
(on the edge)
After adherence of Doctor cover seal
Inner Blade
DV Cover R
3 - 5mm
0
-
0
.5
m
m
Reference Point
Reference Point
R
e
fe
re
n
c
e
p
o
in
t
(o
n
t
h
e
e
d
g
e
)
Inner Blade
*Make sure the edge of Inner blade does
not protrude from the edge of DV blade
Reference Point (on the edge of protruding