Minolta EP1030 - Image Failure: Blank and Black Copy Issues; Troubleshooting Procedures for Blank Copy; Troubleshooting Procedures for Black Copy

1149SBTOS03A
5-3.
Troubleshooting
Procedures
Classified
by
Image
Failure
<Image Failure Samples>
1) Blank copy 2) Black copy 3) Low image density
4)
Foggy
background
5)
Black
streaks
or
bands
6)
Black
spots
7) Blank streaks or bands 8) Void areas
fA 3GDE
f 3CDE:
A B3CDE:
fF
O3GDE:
ABCDE
f
3GCDE:
ABCDE
9) Smear on back
1149TO12AA
T-29
11S9SBTO50301A
1) Blank Copy
Check Item
Is the PC Drum Charge Co-
rona installed correctly?
Are the Comb Electrode
wire and grid mesh normal?
Is the wiring between High
Voltage Unit HV1 and the
PC Drum Charge Corona.
normal? =.
Charging failure
a een a
Check and change if neces-
sary.
Change HV1.
; no | Correct the wiring.
Developing Unit out
of position
4 Is the Imaging Unit in posi- Reinstall the Unit.
tion?
Are the Ds Rolls in contact Reinstall the Developing
with the PC Drum? Unit.
Is the drive transmission Check and change any de-
factive part.
mechanism to the Develop-
ing Unit intact?
Is the Image Transfer Coro-
na wire normal?
Is the wiring between High Change HV1,.
Voltage Unit HV1 and coro-
Image transfer fail-
ure
Check and change if neces-
sary.
na wire normal? | No | Correct wiring.
Paper guide shorting Is the paper guide shorted Connect the paper guide
. to the frame? YES | through the resistor to the
frame.
1169SBT060302A
2) Black copy
PC Drum groundin, Is the PC Drum properly Clean or change the PC
failure grounded? Drum.
Developing bias fall- Is the developing blas con- Clean or replace the deve!-
ure tact normal? oping bias contact.
Light path failure Has condensation formed Clean the mirrors and lens,
on the mirrors, fens, or PC: YES
| Cause | Stop | Checkitem | | Action
ing
and run the Drum Dehum.
operation.
| No | Reinstall the mirrors.
Drum?
Are the mirrors installed
properly?
Does the Exposure Lamp | wo | Take the action for malfunc-
tion code C40,
Exposure Lamp’s
failure to turn ON
light up?
T-30