Black Spot - Ricoh FAX1120L Service Manual

TROUBLESHOOTING FLOW CHART

4.5.9 BLACK SPOT

Is it regular
interval of 37.7
mm?
YES
Perform the OPC
cleaning using the
control panel buttons.
Does the same
problems persist?
NO
END
Is it regular
NO
interval of 75.4
mm?
NO
When taking out
the cartridge,
toner leaks?
YES
Toner leaks and toner
material dropped onto
the paper
→ Replace the
AIO
YES
YES
Remove obstacles stuck
on OPC drum's surface
Bad image
NO
removes by
scratching?
YES
Check toner is stuck
onto the P/R or H/R in
fusing unit
→ Clean it or replace
The problem occurred
since the obstacles
stuck to charge roller
→ Replace the AIO
4-14
10 October, 2002
The problem randomly
NO
occurred due to the
toner fallen
→ Clean the machine
H911T919.WMF