Minolta EP3010 Manual page 324

1. Blank Copy
Cause Step
Charging failure
1
2
3
Developing Unit
4
out of position
5
6
7
Image transfer fail-
8
ure
9
Paper guide short-
10
ing
2. Black copy
Cause Step
PC Drum ground-
1
ing failure
Developing bias
2
failure
3
Light path failure
4
5
Exposure Lamp's
6
failure to turn ON
Check Item
Is the PC Drum Charge
Corona installed correctly?
Are the PC Drum Charge
Corona wire and grid mesh
normal?
Is the wiring between High
Voltage Unit HV1 and corona
wire normal?
Is the PC Unit inserted all the
way into position?
Are the Ds Rolls in contact
with the PC Drum?
Is the Developing Unit connec-
tor plugged in?
Is the drive transmission to the
Developing Unit normal?
Is the Image Transfer Corona
wire normal?
Is the wiring between High
Voltage Unit HV1 and corona
wire normal?
Is the paper guide shorted to
the frame?
Check Item
Is the PC Drum properly
grounded?
Is the developing bias contact
normal?
Is the developing bias harness
normal?
Has condensation formed on
the mirrors, lens, or PC Drum? YES
Are the mirrors installed prop-
erly?
Does the Exposure Lamp light
up?
T-87
Result Action
Install correctly.
NO
Check and replace if neces-
NO sary.
YES Replace HV1.
Correct the wiring.
NO
Fully tighten the knob.
NO
Reinstall the Developing Unit.
NO
Plug it in.
NO
Check and replace parts if
NO
necessary.
Check and replace if neces-
NO
sary.
YES Replace HV1.
Correct wiring.
NO
Connect the paper guide
YES
through the resistor to frame.
Result Action
Clean or replace the PC Drum
NO
Ground Plate.
Clean or replace the develop-
NO
ing bias contact.
YES Replace the High Voltage Unit.
NO Replace the harness.
Clean the mirrors and lens,
and run the Drum Dehum.
operation.
NO Reinstall the mirrors.
Take the action for malfunction
NO
code C0400.