Low Image Density - Minolta EPI 054 User Manual

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15

(3) Low Image Density

Cause Step
PC Drum life Does the PC Drum have
1
enough service life?
Do the fan motors turn
2 properly? (Ozone deteriora-
tion, temperature rise)
PC Drum ground- Is the PC Drum properly
3
ing failure grounded?
Drum charge Are the PC Drum Charge
failure 4 Corona wire and grid mesh
normal?
Is the wiring between High
5 Voltage Unit HV1 and
corona wire normal?
Optical failure Are the mirrors and lenses
6 dirty or covered with con-
densation?
Image transfer Is the Image Transfer
7
failure Corona dirty?
Is the copy paper damp?
8
Developing failure 9 Is Db adjusted properly?
Are the Ds Rolls in contact
10
with the PC Drum?
Is the developing bias
11
contact normal?
Check Item Result
NO
NO
NO
NO
YES Replace HV1.
NO
YES
YES
YES
NO
NO
NO
T-67
Action
Replace the PC Drum.
Troubleshoot the fan
motors.
Clean or replace the PC
Drum Ground Plate.
Check and replace if neces-
sary.
Correct the wiring.
Clean the mirrors and
lenses.
Clean the Image Transfer
Corona or replace the wire.
Replace copy paper and
instruct the user in how to
store paper and to keep the
copier plugged in during the
night.
Make Db adjustment.
Reinstall the Developing
Unit.
Clean or replace the devel-
oping bias contact.