Alignment & Troubleshooting
Service Manual
4-76
Samsung Electronics
Ghost
YES
Is it regular
interval of 94.3mm?
PTL lamp
works OK?
Transfer
voltage is set to
standard?
Is it regular
interval of 54.3mm?
Is it regular
interval of 56.6mm?
(as transfer roller
interval)
Developing
/supplying voltage
normal? (-450V/
-600V)
Check
HVPS
contacts and
HVPS's
self-
output
-> If failed,
repair/replace
HVPS
Replace
PTL
assembly
Irregularity of
NIP
between rollers in
toner cartridge
-> Replace toner cartridge
- Repair or replace
HVPS
- Check and Repair or
replace the terminal
contacts
A specific part of the transfer
roller has ruined or its
resistance value is changed
-> Replace transfer roller
Transfer roller cannot force
regularly due to the gears
eccentricity of transfer roller
-> Replace the defective
component
Bias voltage
is OK? (-450V)
Operating/storage
temperature is too low or
not recommended
paper used?
Adjust the Bias voltage
or replace
HVPS
There may be a problem in toner
layer control in toner cartridge
-> Replace the toner cartridge
Use the machine with
recommended paper and
at condition
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
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