Low Image Density - Minolta Di251 Service Manual

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Low Image Density

Section Step
1 Image transfer current contact terminal
is dirty or deformed.
2 Developing bias contact terminal is
dirty or deformed.
3 Select functions in the following order:
Tech. Rep. Mode
Printer. The image problem is cor-
Engine rected when the "Image Density" value
is changed toward the plus side.
4 Select functions in the following order:
Tech. Rep. Mode
Printer. The image problem is cor-
rected when the "VG Adjust" value is
changed toward the plus side.
1 Shading sheet is dirty.
2 CCD2 Board and MFB2 Board are
connected properly.
IR
3 MFB2 Board and Master Board are
connected properly.
<Typical Faulty Images>
4011T518AA
Check
Tech. Rep. Choice
Tech. Rep. Choice
T-50
Result Action
YES Clean or change.
YES Clean or change.
YES Make setting again.
YES Make setting again.
NO Change I/C.
Change PH Assy.
Change High Voltage
Unit.
Change Master Board.
YES Clean.
NO Correct.
YES Change CCD Unit.
Change MFB2 Board.
NO Correct.