Minolta DI450, Service Manual, Page: 269 / 271

T-78
(13) Rough image
(14) Traces of PC Drum Paper Separator Fingers
(15) Void areas along leading edge
<Paper Separator Corona Output Adjustment Procedure>
1. Press the Utility key.
2. Touch Meter Count.
3. Press the following keys in this order: Stop
→
0
→
0
→
Stop
→
0
→
1.
4. Select Tech. Rep. Mode.
5. Press the following keys in this order: Stop
→
Start.
6. Select “Printer” of the Adjust mode.
7. Select “Separator Charge.”
8. Select “1-side” or “2-side.”
9. Press the Clear key and enter a value from the 10-Key Pad.
10. Use the Access key to change the + or – sign.
11. After the setting has been made, go back to the Basic screen.
Section Step Check Result Action
Engine
1 Foreign matter and caked
toner inside Developing Unit
and DB. YES Remove foreign matter and
caked toner. Change devel-
oper.
2 Image Transfer Corona wire is
dirty or deteriorated. YES Clean or change.
3 Wiring between HV and Image
Transfer Corona is connected. YES Change HV.
NO Connect.
IR
1 Wiring between CCD Assy
and Image Processing Board
is connected. YES Change CCD Assy.
Change Image Processing
Board.
NO Connect.
Section Step Check Result Action
Engine
1 Traces come from PC Drum
Paper Separator Fingers. YES Adjust Paper Separator
Corona output: Change the
value to one 3 to 5 steps
greater than the current set-
ting. (See the adjustment pro-
cedure given below.)
Section Step Check Result Action
Engine
1 Image density along the lead-
ing edge is low. YES Adjust Paper Separator
Corona output: Change the
value to one 3 to 5 steps
greater than the current set-
ting. (See the adjustment pro-
cedure given below.)