Samsung SF-530 Service Manual page 53

Troubleshooting
Black Spot
Is it regular
interval of 37.7mm?
YES
Perform the OPC
cleaning using
the control panel
buttons.
Does the same
problesm
persist?
NO
END
4-20
NO Is it regular
interval of 75.4 mm?
NO
When taking
out the cartridge,
toner leaks?
YES
Toner leaks and toner
material dropped onto
the paper -> Replace the
developer
YES
Remove obstacles
YES
stuck on OPC
drum's surface
Bad image
NO
removes by
scratching?
YES
Check toner is stuck onto
the P/R or H/R in fuser
-> Clean it or replace
The problem occured
since the obstacles
stuck to charge roller
-> Replace toner cartridge
The problem
NO
randomly occured
due to the toner
fallen -> Clean the
machine
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