10 October, 2002
TROUBLESHOOTING FLOW CHART
4-13
Trouble-
shooting
4.5.8 GHOST
Operating/
storage temperature
is too low or not
recommended paper
used?
YES
Is it regular
interval of 75.4
mm?
Transfer voltage
is set to
standard?
Bias voltage is
OK? (-350V)
END
Replce HVPS
NO
YES
NO
YES
YES
NO
Is it regular
interval of 31.6
mm?
Does the
operation of TR
work properly?
Is it regular interval
of 47 mm?
(as transfer roller
interval)
Developing/
supplying voltage
normal? (-350V/
-550 V)
Is it regular
interval of 50.4
mm?
Use the machine with
recommended paper
and at condition
Irregularity of NIP
betwenn rollers in AIO
→
Replace the AIO
YES
There may be a problem
in toner layer control in
AIO
→
Replace the AIO
Clean hot roller or
replace the Fusing unit
•
Repair or replace
HVPS
•
Check and Repair or
replace the terminal
contacts
Clean TR drive and OPC
gear
Does the same
problem persist?
A specific part of the transfer roller has
ruined or its resistance value is changed
→
Replace transfer roller
Transfer roller cannot force regulary due
to the gears eccentricity of transfer roller
→
Replace the defective component
Clean transfer roller's
holder and TR drive gear
or replace TR holder
ass'y
YES
NO
NO
YES
YES
YES
YES
NO
Check HVPS contacts
and HVPS's self-output
→
If failed, replace
the HVPS
NO
NO
NO
H911T918.WMF
