Minolta Di 152, Di 183 Trouble Uneven image density

FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING

01.09.04

(10) Uneven image density

Section Step Check Result Action
Output

system

Input
system

1 PC Drum ground plate is dirty, scratchy,

deformed, worn, or damaged.

2 PC Drum Charge Corona grid mesh and

Comb Electrode are dirty, scratchy,
deformed, worn, damaged, or loose.

3 Image Transfer Roller is dirty, scratchy,

deformed, worn, or damaged.

4 Sleeve/Magnet Roller is dirty , scratchy,

deformed, worn, or damaged.

5 Toner is even on Sleeve/Magnet Roller. NO • Adjust DB.

6 Developer is not even in the Developer

Mixing Chamber of IU.

1 Original Glass is dirty, scratchy, worn, or

damaged.

2 Shading sheet reading portion (the por-

tion on the backside of the Original
Glass to which Original Width Scale is
affixed) is dirty .

3 Scanner mirrors are dirty, scratchy, or

damaged.
4 Exposure Lamp (LA2) is dirty. YES • Clean or change.
5 CCD Unit lens and CCD surface are

dirty or scratchy.

<Check Procedure>

Remove lens cover to check for possible

contamination.
6 Exposure Lamp is abnormally lit (flickers

or abnormally dark) when the Power

Switch is turned ON.
7 Inverter Board (copier: PU2) connector

CN1PU2 is loose.

8 CCD Board (copier: PWB-J) connector

is loose.

YES • Clean, correct, or

change.

YES • Clean, correct, or

change.

YES • Clean or change.

YES • Clean or change.

For details, see DIS/
REASSEMBLY,
ADJUSTMENT.

YES • Even out developer in

the Developer Mixing
Chamber.

NO • Change IU.

• Change Mas ter Board
(copier: PWB-A).

YES • Clean or change.

YES • Clean.

YES • Clean or change.

YES • Clean or change.

NO • Go to step 8.

YES • Reconnect.

NO • Change Ex posure

Lamp (LA2).

YES • Reconnect.

T-56

FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING

01.09.04

Section Step Check Result Action
Input

system

9 Control Board (copier: PWB-C) connec-

tor PJ1A is loose.

YES • Reconnect.

NO • Change CCD Unit.

• Change Control Board
(copier: PWB-C).

T-57