Toner Scattering Image - Minolta CF910 Service Manual

(22) Toner Scattering Image

<Troubleshooting Procedure>
Cause Step
1
Defective 2
Developing
Unit
3
4
5
6
Defective PC 7
Drum
OTHERS 8
Defective 9
Transfer Film
10
Defective 11
Image Trans-
fer Corona
Check Item
Is the problem "distortion"?
Is the Developer Life Counter
around 30K?
Is the inside of the Developing
Unit plugged with foreign mat-
ter or toner?
Open the "ATDC Sensor"
screen in the "Developer"
menu and check if 5% is dis-
played for "ATDC Sensor".
Is the ATDC Sensor window
contaminated?
Is the connector on HV4 con-
nected properly?
Is the surface of the PC Drum
dirty or scratched?
Is the Auxiliary Erase Lamp
dirty or deteriorated?
Is the Transfer Film affixed
properly?
Is Backup Blade 1 adjusted
correctly?
Is the HV3 output proper?
T-89
1144T032AA
Result
YES Go to step 11.
YES Replace the developer.
YES Remove the foreign matter.
If the problem recurs,
change the developer.
("Developer" and "Grada-
tion Adjust")
NO Readjust by referring to
DIS/REASSEMBLY and
ADJUSTMENT.
YES Clean the window.
NO Reconnect the connector.
YES Change the PC Drum.
Change the Cleaning Blade
as a set if necessary.
("AIDC Mode/AIDC Offset"
and "Gradation Adjust")
YES Clean or replace the Auxil-
iary Erase Lamp.
NO Referring to
DIS/REASSEMBLY,
ADJUSTMENT, reaffix the
film.
NO Referring to
DIS/REASSEMBLY,
ADJUSTMENT, readjust.
NO Check the connection of
the connector on the Board,
and if it is proper, change
HV3.
Action