Brother FAX-8650P service manual

	Trouble		Action to be taken
(5) Black and blurred vertical		At the scanner
	stripes	Check the following components:
			- CIS unit
		At the printer side
		•	Clean the paper path which may be contaminated with toner.
		•	Slide the wire cleaner tab to clean the corona wire inside the
			drum unit.
		•	Make sure that the wire cleaner tab is returned to its home
			position.
		•	Replace the drum unit.
		•	Replace the heat-fixing unit.
(6)	Black and blurred	At the printer side
	horizontal stripes	•	If the horizontal stripes appear at 94-mm or 17-mm intervals,
			replace the drum unit.
		•	If they appear at 54-mm intervals, replace the heat-fixing
			unit.
(7)	White vertical streaks	At the scanner
		Check the following components:
			- CIS unit
		At the printer side
		•	Replace the drum unit.
(8)	Dropout	At the printer side
		•	Check the connection of the main–high-voltage flat cable.
		•	Replace the drum unit.
		•	Replace the high-voltage power supply PCB.

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