Konica Minolta bizhub C35, Руководство по обслуживанию

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DRAFT
16. IMAGE QUALITY PROBLEM Field Service V er. 1.0 Feb. 2010
236
16.2.13 Printer monocolor: white lines, white bands, colored lines and colored
bands in main scan direction
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C508DA
White lines
White bands Colored lines
Colored bands
Step Section Check item Result Action
1 Image check A white line or black line in main
scan direction is sharp.
NO Clean the electrostatic charger wire.
2 Imaging unit The surface of the PC drum is
scratched.
YES Change imaging unit.
3 Dirty on the outside. YES Clean.
4 Contact terminals make good con-
nection between each imaging unit
and machine. NO Clean contact terminals.
5 Developing bias contact terminal
makes good connection. NO Clean contact terminal and check ter-
minal position.
6 PH unit The surface of the PH window is
dirty. YES Clean with cleaning jig.
7 The problem has been eliminated
through the checks of steps up to 6. NO Change transfer belt unit.
Change PH unit.