Olivetti d-color MF651, Service Manual, Page: 57 / 1053

OUTLINE
MAINTENANCE
ADJUSTMENT
/ SETTING
TROUBLESHOOTING
APPENDIX
Field Service Ver. 2.0 Jul. 2009
xxix
22.2 How to identify problematic part ....................................................................... 859
22.2.1 Initial check items...................................................................................... 859
22.3 Solution............................................................................................................. 862
22.3.1 Scanner system: white lines, white bands, colored lines and colored bands in
sub scan direction ..................................................................................... 862
22.3.2 Scanner system: white lines, white bands, colored lines and colored bands in
main scan direction ................................................................................... 864
22.3.3 Scanner system: color spots ..................................................................... 865
22.3.4 Scanner system: fog ................................................................................. 866
22.3.5 Scanner system: blurred image, blotchy image ........................................ 867
22.3.6 Scanner system: incorrect color image registration, sync shift
(lines in main scan direction) .................................................................... 868
22.3.7 Scanner system: moire ............................................................................. 869
22.3.8 Scanner system: skewed image ............................................................... 870
22.3.9 Scanner system: distorted image.............................................................. 871
22.3.10 Scanner system: low image density, rough image .................................... 872
22.3.11 Scanner system: defective ACS................................................................ 873
22.3.12 Scanner system: blank copy, black copy ................................................... 874
22.3.13 Scanner system: abnormal image ............................................................ 875
22.3.14 Scanner system: uneven density .............................................................. 876
22.3.15 Printer monocolor: white lines, white bands, colored lines and colored bands
in sub scan direction ................................................................................. 877
22.3.16 Printer monocolor: white lines, white bands, colored lines and colored bands
in main scan direction ............................................................................... 878
22.3.17 Printer monocolor: uneven density in sub scan direction.......................... 879
22.3.18 Printer monocolor: uneven density in main scan direction........................ 880
22.3.19 Printer monocolor: low image density ....................................................... 881
22.3.20 Printer monocolor: gradation reproduction failure ..................................... 883
22.3.21 Printer monocolor: foggy background ....................................................... 884
22.3.22 Printer monocolor: void areas, white spots ............................................... 886
22.3.23 Printer monocolor: colored spots .............................................................. 887
22.3.24 Printer monocolor: blurred image.............................................................. 888
22.3.25 Printer monocolor: blank copy, black copy ................................................ 889
22.3.26 Printer monocolor: uneven image ............................................................. 890
22.3.27 Printer 4-color: white lines, white bands, colored lines and colored bands in
sub scan direction ..................................................................................... 891
22.3.28 Printer 4-color: white lines, white bands, colored lines and colored bands in
main scan direction ................................................................................... 892
22.3.29 Printer 4-color: uneven density in sub scan direction................................ 893
22.3.30 Printer 4-color: uneven density in main scan direction.............................. 894