Samsung SCX-6555N Series Imaging unit is not, Compatible. Check, User’s guide, Worn. Replace with

MESSAGE	MEANING	SUGGESTED
		SOLUTIONS
Imaging unit is not	The imaging unit you	Install a Samsung-
compatible. Check	have installed is not	genuine imaging unit,
user’s guide	for your machine.	designed for your
		machine.
Imaging unit is not	The imaging unit is	Install the imaging unit.
installed. Install it	not installed, or the	If it is already installed,
	CRUM (Consumer	try to reinstall the
	Replaceable Unit	imaging unit.
	Monitor) in the	If the problem persists,
	cartridge is not	please call for service.
	connected.
Imaging unit is	The imaging unit is at	Replace a imaging unit
worn. Replace with	the end of its life.	with a Samsung-
new one	When the imaging unit	genuine imaging unit.
	replacement message	(See "Replacing the
	appears on the screen	imaging unit" on
	and if you select	page 95.)
	Continue, this
	message displays.
LSU error: [zzz].	There is a problem in	Turn the machine off
Please turn off then	the control of LSU	and turn it on again. If
on	unit.	the problem persists,
		please call for service.
Motor does not	There is a problem in	Turn the machine off
operate: [zzz].	the control of motor	and turn it on again. If
Please turn off then	unit.	the problem persists,
on		please call for service.
Original paper does	The lead edge of the	Open the DADF cover
not feed in scanner	document failed to	and remove jammed
	actuate the scan	original. (See "Clearing
	sensor within the	document jams" on
	correct time after	page 98.)
	actuating the
	registration sensor.
Original paper is too	Oversized document	Open the DADF cover
long for scanner.	or double-feeding of	and remove the
Check size	originals.	jammed original. (See
		"Clearing document
		jams" on page 98.)
		Check the document
		size whether it is
		supported. (See "DADF
		document size" on
		page 124.)
Original paper jam	The originals are	Open the DADF cover
in front of scanner	jammed in DADF.	and remove the
		jammed original. (See
		"Clearing document
		jams" on page 98.)
Original paper jam	Paper has jammed	Clear the jam. (See
in front of scanner	during duplex printing	"Clearing document
duplex path	in the DADF.	jams" on page 98.)

MESSAGE	MEANING	SUGGESTED
		SOLUTIONS
Original paper jam	The lead edge of the	Open the DADF cover
inside of scanner	document failed to	and remove the
	actuate the gate	jammed original. (See
	sensor within the	"Clearing document
	correct time after	jams" on page 98.)
	actuating the scan
	sensor.
	When the machine is
	on, jammed paper is
	detected in the DADF.
Original paper jam	The lead edge of the	Lift up the document
while reversing	document failed to	input tray and remove
paper in scanner	actuate the duplex	the jammed original.
	sensor within the	(See "Clearing
	correct time when the	document jams" on
	document was fed the	page 98.)
	wrong way.
Paper jam at exit of	Paper jammed in the	Pull jammed paper
finisher	stacker exit part.	from the stacker exit.
Paper Jam at the	Paper has jammed	Clear the jam. (See "In
bottom of duplex	during duplex printing.	the duplex unit area" on
path		page 104.)
Paper Jam at the top
of duplex path
Paper Jam in exit	Paper has jammed in	Clear the jam. (See "In
area	the fuser area.	the fuser area or
		around the toner
		cartridge" on
		page 104.)
Paper jam in front of	Paper jammed in the	Open the stacker door
finisher	stacker.	and remove jammed
		paper by lowering
Paper jam inside		guide 1a or 1b.
finisher
Paper Jam in MP	Paper Misfed from	Clear the jam. (See "In
tray	multi-purpose tray	the multi-purpose
		tray" on page 103.)
Paper Jam in tray 1	Paper misfed from	Clear the jam. (See "In
	tray	the tray 1" on page 100
Paper Jam in tray 2	Or paper has jammed	and see "In the optional
	in the tray feed area.	tray" on page 101 and
Paper Jam in tray 2	Or the tray cover is	see "In the optional
(HCF)	opened.	high capacity
		feeder" on page 102)
Paper Jam in tray 3
Paper Jam in tray 3
(HCF)
Paper Jam in tray 4
Paper jam inside	Paper jammed in the	Open the stacker door
finisher’s duplex	stacker.	and remove jammed
		paper by lowering
		guide 1a or 1b.

Troubleshooting_ 107