Ricoh Aficio SP 5100N, Service Manual

Page: 88 / 175

The causes and solutions of Bad images
G186 4-2 SM
4.2 THE CAUSES AND SOLUTIONS OF BAD IMAGES
4.2.1 VERTICAL BLACK LINE AND BAND
Description:
1. Straight thin black vertical lines occur in the printing.
2. Dark black vertical band occurs in the printing.
Check and Cause Solution
1. Deformed Doctor-blade or
cleaning-blade, in print cartridge
2. Scratched surface of the charge roller
in the print cartridge.
3. Partial depression or deformation on
the surface of the transfer roller.
1. If causes one or two occur in the print
cartridge, replace the print cartridge
and try to print.
2. Replace the transfer roller if this occurs
as No. three.
4.2.2 VERTICAL WHITE LINE