Samsung SF6500 Service Manual page 107

Maintenance & Troubleshooting
7-4-18 Black Horizontal Line
START
Does the trouble occur even with
another cartridge ?
Does the trouble occur even with
another fuser felt ?
Is the heat roller of the fuser unit
damaged ?
Check the LSU unit and then replace
it if necessary.
7-4-19 White Vertical Line
START
Is there enough toner in the
developer unit ?
Is the heat roller of the fuser unit
damaged ?
Check the LSU unit and then replace
it if necessary.
7-22
N
Y
N
Y
Y
N
N
Y
Y
N
Replace the cartridge.
Replace the fuser felt.
Replace the fuser unit.
Replace the cartridge.
Replace fuser unit.
Samsung Electronics