Minolta EP1030 Manual page 113

1159SBTO50303A,
3) Low Image Density
PC Drum life
[Sip [__cheektom [Resa Aon
Does the PC Drum have Change the PC Drum.
enough service life?
Do the fan motors turn Troubleshoot the fan mo-
tors.
properly? (Ozone deteriora-
tion, temperature rise)
PC Drum grounding Is the PC Drum grounded Clean or change the PC
failure properly? Drum.
Drum charge failure Are the Comb Electrode pena and change if neces-
and grid mesh normal?
Is the wiring between High a HV1.
Voltage Unit HV1 and the
Are the mirrors and lens Clean the mirrors and lens.
dirty or covered with con-
Optical failure
densation?
Is the Image Transfer Coro- YES Clean the Image Transfer
na dirty? Corona or change the wire.
Is the copy paper damp? Change the copy paper and
Image transfer fail-
ure
instruct the user in how to
store paper.
| 9 | Is Db adjusted properly? | NO. | Make Db adjustment.
10 Are the Ds Rolls In contact Reinstall the Developing
with the PG Drum? Unit.
Developing failure
T-31
| Developing failure
TISSSBTO50304A
4) Foggy background
ts the Cleaning Blade dirty Change the Cleaning
with foreign matter, paper Blade.
dust, etc. or Is it scratched?
Is the PC Drum dirty with
foreign matter, etc.?
Clean or replace the PC
Drum, Change the Cleaning
Blade if necessary.
Clean the Sleeve Roller.
Check the Developer Scat-
tering Prevention Seal to
see If it is deformed or dirty.
Is the Sleeve Roller abnor-
mally dirty?
1158SBTO60306A
5) Black Streaks or Bands
Are the Comb Electrode
and grid mesh dirty?
Clean or replace the PC
Drum Charge Corona.
Check the toner suction
mechanism for operation.
is the Cleaning Blade dirty Change the Cleaning
with foreign matter, paper Blade.
dust, etc., or is It
scratched?
Uneven charging
Cleaning failure
ls the PC Drum surface
dirty or scratched?
Change the PC Drum. If
necessary, change the
Cleaning Blade.
PC Drum faiture
Are the Upper Paper Sepa-
rator Fingers dirty or de-
formed?
Are the mirrors and lens YES Clean the mirrors and lens.
dirty with foreign matter?
Clean or replace the Upper
Paper Separator Fingers.
Fusing failure 4 Is the Upper Fusing Roller YES Clean or replace the Upper
dirty or scratched? Fusing Roller.
Optical failure
T-32