Copy Problems; White Copy; Black Copy; Abnormal Noise - Ricoh B173 Service Documentation

4.8 COPY PROBLEMS

4.8.1 WHITE COPY

Description
Blank page is printed out when copy.
Check and Cause
Check the Scan-Cover open.
Check shading profile.
Check white/black reference voltage in
the Main Board.

4.8.2 BLACK COPY

Description
Black page is printed out when Copy.
Check and Cause
Check the CCD problem in Main Board.
Check shading profile.

4.8.3 ABNORMAL NOISE

Description
There is noise when copy.
Check and Cause
Check the Scanner Motor and any
mechanical disturbance.
Check the Motor Driver in the Main
Board.
B173
Solution
Room light can transit a thin original.
Remake a shading profile in the tech
mode.
Replace the Main Board if it is
defective.
Solution
Check the CCD harness contact.
Remake shading profile in the tech
mode.
Solution
Check the right position of the
Scanner Motor, and check any
mechanical disturbance in the CCD
carriage part.
If any driver is defective, replace the
Main Board.
• Connection PBA U4-1, 19 or U5-1,
19=0V to 24V swing signal when
operating.
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COPY PROBLEMS
SM