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