Konica Minolta BIZHUB 501 Service Manual page 335

10. SERVICE MODE
No.1 Overall halftone (8-bit output)
[Check item]
• When the density is set at 70 (halftone)
When there are white stripes or black stripes, check to see if an abnormality is found with the scanner
system or process system
[Recommended sections to be checked]: Developing unit, cleaning glass, charging corona, transfer/sep-
aration corona, scanner mirror, slit glass and original glass
• When the density is set at 0 (white)
When an image fogging occurs, check the process system to see if an abnormality is found with it.
[Recommended sections to be checked]: Charging corona, and the contact of a high voltage power
source
• When the density is set at 255 (black)
When the density is thin, check the process system to see if an abnormality is found with it.
[Recommended sections to be checked]: Write unit
Test pattern
When the density is set at 70.
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When the density is set at 0.
Field Service Ver.2.0 Mar. 2009
When the density is set at 255.
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