Samsung SCX-6320F/XEC Service Manual page 103

Troubleshooting
Error Status
Poor Fusing
Partial blank image
(not periodic)
Partial blank image
(periodic)
Different image density
(left and right)
Horizonral band
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Service Manual
7-6
Check
1. Use recommended paper?
2. Check fusing temperature.
3. The machine was under the low tempera ture
for a long time?
1. Toner is low?
2. The toner cartridge is out of position?
1. Develop roller scar or particle.
2. Scar or particle. (94.3 mm)
3. Transfer roller scar or particle. (56.6 mm)
1. Charge roller's pressure force unbalance
2. Dev. roller and OPC or Dev. roller and blade's
pressure force unbalance
3. Transfer roller's pressure force unbalance of
each side
1. Unstable high voltage contact
2. Charge roller's contamination
3. Contamination of heat roller
4. Malfunction of LSU
Solution
1. Should use recommended paper.
2. Check engine controller board. If you have
not thermometer, measure the thermistor
voltage to CPU, If 2.3V±5% in printing CPU
works well. Then, disassemble fuser and
check the thermistor contact and thermistor.
3. Re-check after putting the machine in the
warm place for certain period.
1. Replace Toner cartridge.
2. Checkand adjust.
1. Replace toner cartridge.
2. Replace drum cartridge.
3. Replace transfer roller.
1. Replace drum cartridge.
2. Replace toner cartridge and drum cartridge.
3. Check left and right spring of transfer roller
and the spring pressing the toner cartridge
inside the machine
1. Clean each contact and check good contact
2. Clean charge roller
3. Replace fuser unit
4. Check Main PBA.
Samsung Electronics