Smear On Entire Copy And Backside - Minolta CF910 Service Manual

(6) Smear on Entire Copy and Backside

Smear on Entire Copy
<Troubleshooting Procedure>
Cause Step
1
Defective IR 2
Defective 3
Cleaning Unit
4
5
6
7
Defective PH 8
Defective PC 9
Drum Charge
Corona
10
Defective 11
Transfer Film
1144T011AA
Check Item
Does the image problem occur
on the back side of the copy?
Are the lens, mirror, and Origi-
nal Glass dirty?
Is the Cleaning Blade warped
or deteriorated?
Are the side seals deterio-
rated?
Does the Paddle turn?
Is the Toner Antispill Seal
warped or deteriorated?
Is the original placed in the
same direction as the copy
paper selected?
Is the "Left Margin" and "Top
Margin" within the correct
range?
Are the Corona Wire and
Meshes dirty or deteriorated?
Are the Side Seals deterio-
rated?
Is the Transfer Film dirty or
deteriorated?
T-63
Smear on Backside
1144T012AA
Result Action
YES Go to step 7.
YES Clean these surfaces.
YES Change the Cleaning
Blade. Change the PC
Drum as a set if necessary.
YES Change the side seals.
NO A. Check the wiring
between PWB-I and
M15.
B. Check the M15 drive for
possible overload, and
if it is free of overload,
change M15.
C. Check the drive belt for
proper engagement.
YES Change the Toner Antispill
Seal.
NO Place the original in the
same direction as the copy
paper or select the Drawer
that is loaded in the same
direction as the original.
NO Readjust.
YES Clean or change the
Corona Wire and Meshes.
YES Change the Side Seals.
YES Clean or change the Film.
("Jam Sensor," "PRT Area"
and "Gradation Adjust")