Minolta CF910 Service Manual page 442

<Troubleshooting Procedure>
Cause Step
Defective PC 12
Drum
13
14
Defective PC 15
Drum Charge
Corona
16
Defective PC 17
Cleaning Unit
18
19
20
Defective 21
Stabilizer
Defective 22
Transfer Film
23
24
Check Item
Is the PC Drum Heater ener-
gized?
Is the PC Drum grounded
properly?
Is the surface of the PC Drum
dirty or scratched?
Are the Corona Wire and
Meshes dirty or deteriorated?
Is the connector on HV1 con-
nected properly?
Is the Cleaning Blade warped
or deteriorated?
Is the Toner Antispill Seal
warped or deteriorated?
Is the AIDC Sensor installed in
the proper position?
Are the AIDC Sensor and V0
Sensor dirty?
Are the data in the "PRT Max
Density", "PRT Highlight",
"Background Voltage" and "VB
Shift" screens correct?
Is the Transfer Film dirty or
deteriorated?
Is the Film affixed properly?
Is the Transfer Film dented or
scratched?
T-75
Result Action
NO A. Check the PC Drum
flange contact for
proper contact.
B. Check the wiring
between SSR5 and H3.
Change the Heater
Assy if necessary.
NO Clean or change the PC
Drum ground plate.
YES Change the PC Drum.
Change the Cleaning Blade
as a set if necessary.
("AIDC Mode/AIDC Offset"
and "Gradation Adjust")
YES Clean or change the
Corona Wire and Meshes.
NO Reconnect the connector.
YES Change the Cleaning
Blade. Change the PC
Drum if necessary.
YES Change the Toner Antispill
Seal.
NO Referring to
DIS/REASSEMBLY,
ADJUSTMENT, reinstall the
sensor.
YES Clean the sensors.
NO Readjust.
YES Clean or change the Film.
("Jam Sensor," "PRT Area"
and "Gradation Adjust")
NO Readjust by referring to
DIS/REASSEMBLY,
ADJUSTMENT.
YES Change the film.
("Jam Sensor", "PRT Area"
and "Gradation Adjust")