Background - Samsung ML-4500/XEV Service Manual

Troubleshooting

Background

NO
Replace transfer
roller's holder
4-12
Recommended
paper used?
YES
Is pressure of
transfer roller too high?
Does the operation of
TR work properly?
YES
Transfer,
charge and developing
voltage are OK?
YES
Operating/
storage atmosphere is
too high temperature
/humidity?
YES
Solve the problem under
the recommended condition
Check Terminals or contacts and 'Guide-Deve Spring'
are misplaced
-> Repair or replace transfer roller etc.
NO
Print 20 to 30 pages using
the recommended paper
YES
Same problem
occurs?
- Adjust voltage or replace HVPS
NO
- Repair or replace after checking the
terminals' contacts
Dirt or
NO
dust around the
charge roller?
YES
Clean the charge roller
or replace step-up device
/terminal after check
NO
END
NO
Replace the
toner cartridge
NO
Work OK?
YES
Internal blade or suppying
part of the developer is
defective
-> Replace the toner cartridge
Samsung Electronics