Brother 1660E Service Manual page 84

I-7
Black vertical streaks or Blurred vertical line
I-8
Possible cause Step
EP-ED cartridge 1
Fixing unit
damaged
I-9 Black and thin horizontal streaks
Possible cause Step
Beam detection
1
error
I-10 Black and blurred horizontal stripes
Possible cause Step
Drum or charging 1
roller failure
Fixing unit 2
failure
Check
During a printing, open the toner cartridge lid
in the printer and pull out the EP-ED cartridge.
Open the drum shutter of the EP-ED cartridge
and check the toner image on the drum.
Are there vertical stripes on the drum?
Check
-
Check
Do stripes appears at 95 mm or 38 mm
interval?
Do stripes appears at 80 mm interval?
Result
Yes
No
Result
-
Result
Yes
Yes
VI - 8
Remedy
Replace the EP-ED cartridge.
Replace the fixing unit.
Remedy
Replace the scanner unit or
the harness and, if the problem
is not resolved, replace the
main PCB assy.
Remedy
Replace the EP-ED cartridge.
Replace the fixing unit.