Konica Minolta Bizhub C350 Service Manual page 29

bizhub C350 Field Service Ver. 2.0 April 2004
3.1 Machine is not Energized at All (PU1 Operation Check) ................................. 4-49
3.2 Control panel indicators do not light. ............................................................... 4-49
3.3 Fusing Heaters do not Operate ....................................................................... 4-50
3.4 Power is not Supplied to Options..................................................................... 4-50
3.4.1 ADF ............................................................................................................ 4-50
3.4.2 Optional Paper Feed Cabinet ..................................................................... 4-50
3.4.3 Finisher....................................................................................................... 4-51
3.4.4 Duplex......................................................................................................... 4-51
4. Image quality problem ........................................................................................ 4-52
4.1 How to read Element date ............................................................................... 4-52
4.1.1 Table # ........................................................................................................ 4-52
4.1.2 Level History 1 ............................................................................................ 4-53
4.1.3 Level History 2 ............................................................................................ 4-53
4.2 How to identify problematic part ...................................................................... 4-54
4.2.1 Initial Check Items ...................................................................................... 4-54
4.3 Solution............................................................................................................ 4-56
4.3.1 IR System: white lines in FD, white bands in FD, colored lines in FD,
and colored bands in FD ............................................................................ 4-56
4.3.2 IR System: white lines in CD, white bands in CD, colored lines in CD,
and colored bands in CD ............................................................................ 4-57
4.3.3 IR System: color spots................................................................................ 4-58
4.3.4 IR System: fog ............................................................................................ 4-59
4.3.5 IR System: blurred image, blotchy image ................................................... 4-60
4.3.6 IR System: incorrect color image registration, sync shift (lines in CD) ....... 4-61
4.3.7 IR System: moire ........................................................................................ 4-62
4.3.8 IR System: skewed image .......................................................................... 4-63
4.3.9 IR System: distorted image ........................................................................ 4-64
4.3.10 IR System: low image density, rough image............................................... 4-65
4.3.11 IR System: defective ACS........................................................................... 4-66
4.3.12 IR System: blank copy, black copy.............................................................. 4-67
4.3.13 IR System: abnormal image ....................................................................... 4-68
4.3.14 Printer Monocolor: white lines in FD, white bands in FD,
colored lines colored bands in FD, white lines in CD,
white bands in CD, colored lines in CD, colored bands in CD .................... 4-69
4.3.15 Printer Monocolor: uneven density in FD ................................................... 4-70
4.3.16 Printer Monocolor: uneven density in CD ................................................... 4-71
4.3.17 Printer Monocolor: low image density......................................................... 4-72
4.3.18 Printer Monocolor: gradation reproduction failure ...................................... 4-74
4.3.19 Printer Monocolor: foggy background......................................................... 4-76
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