YES
Is it regular
interval of 95mm?
PTL lamp
works OK?
Transfer
voltage is set to
standard?
Is it regular
interval of 45mm?
Is it regular
interval of 58mm?
(as transfer roller
interval)
Developing
/supplying voltage
normal? (-300V/
-500V)
Check HVPS
contacts and
HVPS's self-
output
-> If failed,
repair/replace
HVPS
Replace PTL
assembly
Irregularity of NIP
between rollers in
developer
-> Replace developer
- 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? (-300V)
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 developer
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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