Samsung SF6500 Service Manual page 105

Maintenance & Troubleshooting
7-4-15 Uneven Density
START
Does the trouble occur even with
another cartridge ?
Is the transfer unit O.K ?
Check the LSU unit and then
replace it if necessary.
7-4-16 All Black Printed
START
Is the drum installed properly ?
Does the trouble occur even with
another cartridge ?
Is charge wring harness in HVPS O.K ?
Does the trouble occur even with
anther HVPS ?
Check the LSU unit and then replace
it if necessary.
7-20
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
Replace the cartridge.
Check the transfer roller or replace
the transfer unit.
Replace drum properly.
Replace the cartridge.
Connect the harness properly or
replace it.
Replace the HVPS.
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