Samsung WT21MFF Users Manual

Cleaning the Drum

You can clean the OPC drum of the toner cartridge manually or automatically.

If there are streaks or spots on documents you print, the OPC drum of the toner cartridge may require manual cleaning.

1Before starting the cleaning procedure, make sure that paper is loaded in the machine.

2Press Menu on the control panel until “Maintenance” appears on the top line of the display.

The first available menu item, “Clean Drum”, displays on the bottom line.

3 Press Enter.

The first available menu item, “Yes” displays on the bottom line.

4 Press Enter.

The machine prints out a cleaning page. Toner particles on the drum surface are affixed to the paper.

5If the problem remains, repeat steps 1 through 4.

6To return to Standby mode, press Stop/Clear.

Ignoring the Toner Empty Message

(Only for SCX-4521F)

When the toner cartridge is nearly empty, the machine shows the “[Toner Empty]” message and continues printing except incoming faxes. In this case, incoming faxes are saved in memory.

However, you can set the machine to print incoming faxes, even though print quality is not optimal.

1Press Menu until “Machine Setup” appears on the display.

2Press the scroll button ( or ) until “Ignore Toner” appears on the bottom line and press Enter.

3 Press the Scroll button ( or ) to select “On” or “Off”. Select “On” to ignore the [Toner Empty] message.

Select “Off” to stop printing incoming faxes when the message appears. This is the default setting.

4Press Enter to save the selection.

5To return to Standby mode, press Stop/Clear.

8.5 Maintenance

Consumables and Replacement

Parts

From time to time, you needs to replace the toner cartridge, roller, and fuser unit to maintain top performance and to avoid print quality problems and paper feed problems resulting from worn parts.

The following items should be replaced after you have printed the specified number of pages:

Items	Yield (Average)
ADF rubber pad	Approx. 20,000 pages
ADF roller	Approx. 50,000 pages
Paper feeding roller	Approx. 50,000 pages
Transfer roller	Approx. 50,000 pages
Fuser unit	Approx. 50,000 pages

To purchase consumables and replacement parts, contact your Samsung dealer or the retailer where you bought your machine. We strongly recommend that these items be installed by a trained service professional, except for the toner cartridge (see “Replacing the Toner Cartridge” on page 8.4) and the ADF rubber pad (see “Replacing the ADF Rubber Pad” on page 8.6).

Replacing the ADF Rubber Pad

You can purchase an ADF rubber pad from your Samsung dealer or the retailer where you bought your machine.

1 Open the ADF cover.

2 Remove the ADF rubber pad from the ADF, as shown.

3

4

Insert a new ADF rubber pad into place. Close the ADF cover.

8.6 Maintenance

9 Troubleshooting

This chapter gives helpful information for what to do if you encounter an error.

This chapter includes:

•Clearing Document Jams

•Clearing Paper Jams

•Clearing LCD Error Messages

•Solving Other Problems

•Common Linux Problems

•Common Macintosh Problems

Clearing Document Jams

When a document jams while passing through the ADF (Automatic Document Feeder), “[Document Jam]” appears on the display.

Input Misfeed

1Remove any remaining page(s) from the ADF.

2Open the ADF cover.

3 Pull the document gently out of the ADF.

4 Close the ADF cover. Then load the removed page(s), if any, back into the ADF.

NOTE: To prevent document jams, use the document glass for thick, thin, or mixed paper-type documents.

9.1 Troubleshooting

Exit Misfeed

1Remove any remaining page(s) from the ADF.

2Open the ADF cover.

3 Remove the misfed documents from the document output tray.

4Close the ADF cover. Then load the removed page(s), if any, back into the ADF.

Clearing Paper Jams

When a paper jam occurs, “Paper Jam” appears on the display. Refer to the table below to locate and clear the paper jam.

Message	Location of Jam	Go to
[Paper Jam 0]	In the tray or manual	page 9.2
Open/Close Door	tray
[Paper Jam 1]	In the fuser area or	page 9.3
Open/Close Door	around the toner
	cartridge.
[Paper Jam 2]	In the paper exit area	page 9.3
Check Inside

To avoid tearing the paper, pull out the jammed paper gently and slowly. Follow the instructions in the following sections to clear the jam.

9.2 Troubleshooting

In the Tray

1Remove the jammed paper in the tray by gently pulling it straight out.

If there is any resistance and the paper does not move when you pull, or if you cannot see the paper in this area, check the fuser area around the toner cartridge. See page 9.3.

2 Open and close the front door to resume printing.

In the Manual Tray

1Remove the jammed paper in the tray by gently pulling it straight out.

If there is any resistance and the paper does not move when you pull, or if you cannot see the paper in this area, check the fuser area around the toner cartridge. See page 9.3.

2 Open and close the front door to resume printing.

In the Fuser Area or Around the Toner Cartridge

NOTE: The fuser area is hot. Take care when removing paper from the machine.

1Open the front door.

2Pull the toner cartridge out, lightly pushing it down.

5 If necessary, push the manual tray back into the machine.

3If necessary, pull the manual tray out.

4Remove the jammed paper by gently pulling it straight out.

9.3 Troubleshooting

6Reinstall the toner cartridge and close the front door. Printing automatically resumes.

In the Paper Exit Area

1Open and close the front door. The jammed paper automatically exits the machine.

If the paper does not exit, continue to step 2. 2 Gently pull the paper out of the output tray.

3

4

If there is any resistance and the paper does not move when you pull, or if you cannot see the paper in the output tray, open the rear cover by pulling the tab on it.

Remove the jammed paper by gently pulling it straight out.

Tips for Avoiding Paper Jams

By selecting the correct paper types, most paper jams can be avoided. When a paper jam occurs, follow the steps outlined in “Clearing Paper Jams” on page 9.2.

•Follow the procedures in “Loading Paper” on page 2.3. Ensure that the adjustable guides are positioned correctly.

•Do not overload the tray.

•Do not remove paper from the tray while your machine is printing.

•Flex, fan, and straighten the paper before loading.

•Do not use creased, damp, or highly curled paper.

•Do not mix paper types in the tray.

•Use only recommended print materials. See “Paper Specifications” on page 10.3.

•Ensure that the recommended print side of print materials is facing up in the tray.

CAUTION: Inside of the machine is hot. Take care when removing paper from the machine.

5 Close the rear cover.

6 Open and close the front door to resume printing.

Clearing LCD Error Messages

Display	Meaning	Suggested solutions
Cancel ?	Your machine’s	To cancel the fax job, press
1:Yes 2:No	memory has become	the 1 button to accept “Yes”.
(only for SCX-	full while trying to	If you want to send the pages
4521F)	store a document into	that have been successfully
	memory.	stored, press the 2 button to
		accept “No”. You should send
		the remaining pages later,
		when memory is available.
[Comm. Error]	The machine has a	Ask the sender to try again.
(only for SCX-	communication
4521F)	problem.
CRU Fuse Error	The toner cartridge is	Install the toner cartridge
	not installed correctly.	correctly. See “Replacing the
		Toner Cartridge” on page 8.4.
[Document Jam]	The loaded document	Clear the document jam. See
	has jammed in the	“Clearing Document Jams” on
	ADF (Automatic	page 9.1.
	Document Feeder).
[Front or Rear]	The front door or rear	Close the door until it locks
[Cover Open]	cover is not securely	into place.
	latched.
Enter Again	You entered an	Enter the correct item again.
	unavailable item.

9.4

Troubleshooting

	Display	Meaning	Suggested solutions
	Low Heat Error	There is a problem in	Unplug the power cord and
		the fuser unit.	plug it back in. If the problem
	Open Heat Error
			persists, please call for
			service.
	[Over Heat]
	Group Not	You have tried to	Use a speed dial number or
	Available	select a group location	dial a number manually using
	(only for SCX-	number where only a	the number keypad.
	4521F)	single location
		number can be used,
		such as when adding
		locations for a
		broadcast operation.
	[Incompatible]	The remote machine	Reconfirm the remote
	(only for SCX-	did not have the	machine’s features.
	4521F)	requested feature,
		such as a delayed
		transmission.
		This message also
		occurs if the remote
		machine does not
		have enough memory
		space to complete the
		operation you are
		attempting.
	[Line Busy]	The receiving party	Try again after a few minutes.
	(only for SCX-	did not answer or the
	4521F)	line is already
		engaged.
	[Line Error]	Your machine cannot	Try again. If the problem
	(only for SCX-	connect with the	persists, wait an hour or so
	4521F)	remote machine or	for the line to clear and try
		has lost contact	again.
		because of a problem	Or, turn the ECM mode on.
		with the phone line.	See “ECM Mode (Error
			Correction Mode)” on
			page 7.15.
	Load Document	You have attempted	Load a document into the ADF
		to set up a copy or fax	and try again.
		operation with no
		document loaded into
		the ADF.
	[LSU Error]	A problem has	Unplug the power cord and
		occurred in the LSU	plug it back in. If the problem
		(Laser Scanning Unit).	persists, please call for
			service.
	Memory Dial Full	The fax jobs queue in	Cancel unnecessary fax jobs
	(only for SCX-	the memory is full.	in the memory.
	4521F)

9.5

Display	Meaning	Suggested solutions
Memory Full	The memory is full.	Delete unnecessary
(only for SCX-		documents and retransmit
4521F)		after more memory becomes
		available. Alternatively, split
		the transmission into more
		than one operation.
[No Answer]	The receiving fax	Try again. Make sure that the
(only for SCX-	machine has not	receiving machine is
4521F)	answered after	operational.
	several redial
	attempts.
[No Cartridge]	The toner cartridge is	Install the toner cartridge.
	not installed.	See “Installing the Toner
		Cartridge” on page 2.2.
Not Assigned	• The speed dial	• Dial the number manually
(only for SCX-	location you tried to	using the number keypad or
4521F)	use has no number	assign the number. For
	assigned to it.	storing a number, see
		“Automatic Dialing” on
		page 7.9.
	• The ID you entered	• Enter the correct ID
	is not assigned.	page 2.10.
[No Paper]	The paper in the tray	Load paper in the tray. See
Add Paper	has run out.	“Loading Paper” on page 2.3.
Operation	You are doing the	Check the display to see if
Not Assigned	Add/Cancel operation,	there are any scheduled jobs.
(only for SCX-	but there are no jobs	The display should indicate
4521F)	waiting.	them in Standby mode; for
		example, Delay Fax.
Out of Range	The current date and	Enter the correct date and
	time you entered is	time.
	not correct.
[Paper Jam 0]	Paper has jammed in	Clear the jam. See “In the
Open/Close Door	the feeding area of	Tray” on page 9.2.
	the tray.
[Paper Jam 1]	Paper has jammed in	Clear the jam. See “In the
Open/Close Door	the fuser area or	Fuser Area or Around the
	around the toner	Toner Cartridge” on page 9.3.
	cartridge.
[Paper Jam 2]	Paper has jammed in	Clear the jam. See “In the
Check Inside	the paper exit area.	Paper Exit Area” on page 9.3.
[Power Failure]	Power has turned off	The job which you were trying
	then on and the	to do before the power failure
	machine’s memory	must be completely re-done.
	has not been saved.

Troubleshooting

Display	Meaning	Suggested solutions
							Solving Other Problems
Remove Documents	The Favorite Copy	The Clone, Autofit, ID Card
from ADF	button is set to Clone,	Copy or Poster feature does					The following chart lists some conditions that may occur and
	Autofit, ID Card Copy	not work with ADF. Remove
							the recommended solutions. Follow the suggested solutions
	or Poster and you	the documents in the ADF.
							until the problem is corrected. If the problem persists, please
	press the button.
							call for service.
[Retry Redial?]	The machine is	You can press Enter to					Paper Feeding Problems
(only for SCX-	waiting for a specified	immediately redial, or Stop/
4521F)	time interval to redial	Clear to cancel the redial
						Condition		Suggested solutions
	a previously busy	operation.
	station.					Paper is jammed		Clear the paper jam. See “Clearing Paper Jams” on
						during printing.		page 9.2.
Scanner Locked	The scanner module is	Upload the power cord and
	locked.	plug it back in.
						Paper sticks		• Ensure that there is not too much paper in the tray.
						together.		The tray can hold up to 150 sheets of paper,
[Stop Pressed]	The Stop/Clear	Try again.
								depending on the thickness of your paper.
	button has been
								• Make sure that you are using the correct type of
	pressed during a copy
	or fax operation.							paper. See “Paper Specifications” on page 10.3.
								• Remove paper from the tray and flex or fan the
[Toner Empty]	The toner cartridge	Replace the toner cartridge
								paper.
	has run out.	with a new one. See						• Humid conditions may cause some paper to stick
		“Replacing the Toner
								together.
		Cartridge” on page 8.4.
						Multiple sheets of		• Different types of paper may be stacked in the tray.
[Toner Low]	The toner is almost	Take out the toner cartridge
						paper do not feed.		Load paper of only one type, size, and weight.
	empty.	and gently shake it. By doing
								• If multiple sheets have caused a paper jam, clear
		this, you can temporarily
								the paper jam. See “Clearing Paper Jams” on
		reestablish printing
								page 9.2.
		operations. See
		“Redistributing Toner” on
						Paper does not feed		• Remove any obstructions inside the machine.
		page 8.4.
						into the machine.		• Paper has not been loaded correctly. Remove paper
								from the tray and reload it correctly.
								• There is too much paper in the tray. Remove excess
								paper from the tray.
								• The paper is too thick. Use only paper that meets
								the specifications required by the machine. See
								“Paper Specifications” on page 10.3.
						The paper keeps		• There is too much paper in the tray. Remove excess
						jamming.		paper from the tray. If you are printing on special
								materials, use one sheet of paper at a time.
								• An incorrect type of paper is being used. Use only
								paper that meets the specifications required by the
								machine. See “Paper Specifications” on page 10.3.
								• There may be debris inside the machine. Open the
								front door and remove the debris.
						Transparencies stick		Use only transparencies specifically designed for laser
						together in the		printers. Remove each transparency as it exits from
						paper exit.		the machine.
						Envelopes skew or		Ensure that the paper guides are against both sides of
						fail to feed		the envelopes.
						correctly.

9.6 Troubleshooting

Printing Problems
						Condition	Possible cause	Suggested solutions
						The machine	The paper source	For many software applications,
Condition	Possible cause	Suggested solutions
						selects print	selection in the printer	the paper source selection is
The machine	The machine is not	Check the power cord				materials	properties may be	found under the Paper tab within
does not	receiving power.	connections. Check the power				from the	incorrect.	the printer properties. Select the
print.		switch and the power source.				wrong paper		correct paper source. For details,
						source.		see Software User’s Guide.
	The machine is not	Select your printer as your
	selected as the default	default printer in your Windows.				A print job is	The job may be very	Reduce the complexity of the
	printer.					extremely	complex.	page or try adjusting the print
						slow.		quality settings.
	Check the machine for	After locating the problem, clear
								The maximum print speed of your
	the following:	it.
	• The front door is not	• Close the door.						machine is 20 PPM for Letter-sized
								paper and 20 PPM for A4-sized
	closed.
								paper.
	• Paper is jammed.	• Clear the paper jam. See
		“Clearing Paper Jams” on					If you are using	From the Start menu, choose
		page 9.2.
	• No paper is loaded.						Windows 98/Me, the	Settings and Printers. Right-
		• Load paper. See “Loading
							Spooling Setting may	click the your printer icon,
		Paper” on page 2.3.					be set incorrectly.	choose Properties, click the
	• The toner cartridge	• Install the toner cartridge. See						Details tab, and then choose the
	is not installed.	“Installing the Toner Cartridge”						Spool Settings button. Select
		on page 2.2.						the desired spool setting.
		If a printer system error occurs,
						Half the page	The page orientation	Change the page orientation in
		contact your service				is blank.	setting may be	your application. For details, see
		representative.					incorrect.	Software User’s Guide.
	The connection cable	Disconnect the printer cable and					The paper size and the	Ensure that the paper size in the
	between the computer	reconnect it.					paper size settings do	printer driver settings matches
	and the machine is not						not match.	the paper in the tray.
	connected properly.							Or, ensure that the paper size in
								the printer driver settings
	The connection cable	If possible, attach the cable to
								matches the paper selection in the
	between the computer	another computer that is working
								software application settings you
	and the machine is	properly and print a job. You can
								use.
	defective.	also try using a different printer
		cable.				The machine	The printer cable is	Disconnect the printer cable and
						prints, but the	loose or defective.	reconnect. Try a print job that you
	The port setting is	Check the Windows printer setting
						text is wrong,		have already printed successfully.
	incorrect.	to make sure that the print job is
						garbled, or		If possible, attach the cable and
		sent to the correct port, for				incomplete.		the machine to another computer
		example, LPT1. If the computer
								and try a print job that you know
		has more than one port, make
								works. Finally, try a new printer
		sure that the machine is attached
								cable.
		to the correct one.
							The wrong printer	Check the application’s printer
	The machine may be	Check the printer properties to
							driver was selected.	selection menu to ensure that
	configured incorrectly.	ensure that all of the print
								your machine is selected.
		settings are correct.
							The software	Try printing a job from another
	The printer driver may	Repair the printer software. For
							application is	application.
	be incorrectly	details, see Software User’s
							malfunctioning.
	installed.	Guide.
							The operating system	Exit Windows and reboot the
	The machine is	Check the display message on the
							is malfunctioning.	computer. Turn the machine off
	malfunctioning.	control panel to see if the
								and then back on again.
		machine is indicating a system
		error.

9.7 Troubleshooting

Condition	Possible cause	Suggested solutions
Pages print,	The toner cartridge is	Redistribute the toner, if
but are blank.	defective or out of	necessary. See “Redistributing
	toner.	Toner” on page 8.4.
		If necessary, replace the toner
		cartridge.
	The file may have	Check the file to ensure that it
	blank pages.	does not contain blank pages.
	Some parts, such as	Contact a service representative.
	the controller or the
	board, may be
	defective.
An error	When the USB mode is	Change the USB mode to “Slow”.
occurs	set to “Fast”, some PC	To do so, follow these steps:
repeatedly	user may experience	1. Press Menu until “Machine
when you are	poor USB	Setup” appears on the display.
printing with	communication.	2. Press the scroll button (	or	)
the USB		until “USB Mode” appears on
connection.		the bottom line and press
		Enter.
		3. Press the scroll button (	or	)
		to select “Slow”.
		4. Press Enter to save the
		selection.
		5. Press Stop/Clear to return to
		Standby Mode.

Printing Quality Problems

If the inside of the machine is dirty or paper has been loaded improperly, you may notice a reduction in print quality. See the table below to clear the problem.

		Condition				Suggested solutions
Light or faded						If a vertical white streak or faded area appears on the
print						page:
						• The toner supply is low. You may be able to temporarily
		AaBbCc
						• extend the toner cartridge life. See “Redistributing
		AaBbCc				Toner” on page 8.4. If this does not improve the print
		AaBbCc
						quality, install a new toner cartridge.
		AaBbCc
						• The paper may not meet paper specifications; for
		AaBbCc
						example, the paper is too moist or too rough. See
						“Paper Specifications” on page 10.3.
						• If the entire page is light, the print resolution setting is
						too low or the toner save mode is on. Adjust the print
						resolution and turn the toner save mode off. For
						details, see Software User’s Guide and “Toner Save
						Mode” on page 2.11, respectively.
						• A combination of faded or smeared defects may
						indicate that the toner cartridge needs cleaning. See
						“Cleaning the Drum” on page 8.5.
						• The surface of the LSU part inside the machine may be
						dirty. Clean the LSU (“Cleaning the Inside” on
						page 8.2). Contact a service representative.
Toner specs						• The paper may not meet specifications; for example,
						the paper is too moist or too rough. See “Paper
			AaBbCc			Specifications” on page 10.3.
			AaBbCc			• The transfer roller may be dirty. Clean the inside of
			AaBbCc			your machine. See “Cleaning the Inside” on page 8.2.
			AaBbCc			• The paper path may need cleaning. See “Cleaning the
			AaBbCc			Drum” on page 8.5.
Dropouts						If faded areas, generally rounded, occur randomly on the
						page:
			AaBbCc			• A single sheet of paper may be defective. Try reprinting
			AaBbCc			the job.
			AaBbCc			• The moisture content of the paper is uneven or the
			AaBbCc			paper has moist spots on its surface. Try a different
			AaBbCc			brand of paper. See “Paper Specifications” on
						page 10.3.
						• The paper lot is bad. The manufacturing processes can
						cause some areas to reject toner. Try a different kind or
						brand of paper.
						• The toner cartridge may be defective. See “Vertical
						repetitive defects” on page 9.9.
						• If these steps do not correct the problem, contact a
						service representative.

9.8 Troubleshooting

	Condition					Suggested solutions
Vertical lines If black vertical streaks appear on the page:
						• The drum inside the toner cartridge has probably been
			AaBbCc			scratched. Remove the toner cartridge and install a
			AaBbCc			new one. See “Replacing the Toner Cartridge” on
			AaBbCc			page 8.4.
			AaBbCc
			AaBbCc			If white vertical streaks appear on the page:
						• The surface of the LSU part inside the machine may be
						dirty. Clean the LSU (“Cleaning the Inside” on
						page 8.2). Contact a service representative.
Gray						If the amount of background shading becomes
background						unacceptable:
						• Change to a lighter weight paper. See “Paper
		AaBbCc				Specifications” on page 10.3.
		AaBbCc				• Check the machine’s environment: very dry (low
		AaBbCc				humidity) or high humidity (higher than 80% RH)
	AaBbCc					conditions can increase the amount of background
	AaBbCc					shading.
						• Remove the old toner cartridge and install a new one.
						See “Replacing the Toner Cartridge” on page 8.4.

Toner smear						• Clean the inside of the machine. See “Cleaning the
						Inside” on page 8.2.
						• Check the paper type and quality. See “Paper
						Specifications” on page 10.3.
						• Remove the toner cartridge and install a new one. See
						“Replacing the Toner Cartridge” on page 8.4.
Vertical						If marks repeatedly appear on the printed side of the
repetitive						page at even intervals:
defects						• The toner cartridge may be damaged. If a repetitive
						mark occurs on the page, print a cleaning sheet several
		AaBbCc				times to clean the cartridge; see “Cleaning the Drum”
		AaBbCc				on page 8.5. After the printout, if you still have the
		AaBbCc				same problems, remove the toner cartridge and install
		AaBbCc				a new one. See “Replacing the Toner Cartridge” on
		AaBbCc
						page 8.4.

•Parts of the machine may have toner on them. If the defects occur on the back of the page, the problem will likely correct itself after a few more pages.

•The fusing assembly may be damaged. Contact a service representative.

•If you use inferior quality paper; see “Cleaning the Drum” on page 8.5.

Condition

Background scatter

A

Misformed characters

Page skew

AaBbCc

AaBbCc

AaBbCc

AaBbCc

AaBbCc

Curl or wave

Wrinkles or creases

Suggested solutions

Background scatter results from bits of toner randomly distributed on the printed page.

•The paper may be too damp. Try printing with a different batch of paper. Do not open packages of paper until necessary so that the paper does not absorb too much moisture.

•If background scatter occurs on an envelope, change the printing layout to avoid printing over areas that have overlapping seams on the reverse side. Printing on seams can cause problems.

•If background scatter covers the entire surface area of a printed page, adjust the print resolution through your software application or the printer properties.

•If characters are improperly formed and producing hollow images, the paper stock may be too slick. Try a different paper. See “Paper Specifications” on

page 10.3.

•If characters are improperly formed and producing a wavy effect, the scanner unit may need service. For service, contact a service representative.

•Ensure that the paper is loaded properly.

•Check the paper type and quality. See “Paper Specifications” on page 10.3.

•Ensure that the paper or other material is loaded correctly and the guides are not too tight or too loose against the paper stack.

•Ensure that the paper is loaded properly.

•Check the paper type and quality. Both high temperature and humidity can cause paper curl. See “Paper Specifications” on page 10.3.

•Turn over the stack of paper in the tray. Also try rotating the paper 180° in the tray.

•Ensure that the paper is loaded properly.

•Check the paper type and quality. See “Paper Specifications” on page 10.3.

•Turn over the stack of paper in the tray. Also try rotating the paper 180° in the tray.

9.9 Troubleshooting

Condition	Suggested solutions
Back of	Check for leaking toner. Clean the inside of the machine.
printouts are See “Cleaning the Inside” on page 8.2.
dirty

Black pages • The toner cartridge may not be installed properly. Remove the cartridge and reinsert it.

A	• The toner cartridge may be defective and need
	replacing. Remove the toner cartridge and install a new
	one. See “Replacing the Toner Cartridge” on page 8.4.
	• The machine may require repair. Contact a service
	representative.

Loose toner				• Clean the inside of the machine. See “Cleaning the
				Inside” on page 8.2.
				• Check the paper type and quality. See “Paper
				Specifications” on page 10.3.
				• Remove the toner cartridge and install a new one. See
				“Replacing the Toner Cartridge” on page 8.4.
				• If the problem persists, the machine may require
				repair. Contact a service representative.
Character				Character voids are white areas within parts of characters
Voids				that should be solid black:

	• If you are using transparencies, try another type of
A	transparency. Because of the composition of
	transparencies, some character voids are normal.
	• You may be printing on the wrong surface of the paper.
	Remove the paper and turn it around.
	• The paper may not meet paper specifications. See
	“Paper Specifications” on page 10.3.

Horizontal			If horizontally aligned black streaks or smears appear:
stripes			• The toner cartridge may be installed improperly.
			Remove the cartridge and reinsert it.
		AaBbCc	• The toner cartridge may be defective. Remove the
		AaBbCc	toner cartridge and install a new one. See “Replacing
		AaBbCc	the Toner Cartridge” on page 8.4.
		AaBbCc	• If the problem persists, the machine may require
		AaBbCc	repair. Contact a service representative.
Curl			If the printed paper is curled or paper does not feed into
			the machine:
			• Turn over the stack of paper in the tray. Also try
			rotating the paper 180° in the tray.

Copying Problems

Condition	Suggested solutions
Copies are too light or	Use the Darkness button to darken or lighten the
too dark.	background of the copies.
Smears, lines, marks,	• If defects are on the original, press the
or spots appears on	Darkness button to lighten the background of
copies.	your copies.
	• If no defects are on the original, clean the scan
	unit. See “Cleaning the Scan Unit” on page 8.3.
Copy image is skewed.	• Ensure that the original is face down on the
	document glass or face up in the ADF (Automatic
	Document Feeder).
	• Check that the copy paper is loaded correctly.
Blank copies print out.	Ensure that the original is face down on the
	document glass or face up in the ADF.
Image rubs off the	• Replace the paper in the tray with paper from a
copy easily.	new package.
	• In high humidity areas, do not leave paper in the
	machine for extended periods of time.
Frequent copy paper	• Fan the stack of paper, then turn it over in the
jams occur.	tray. Replace the paper in the tray with a fresh
	supply. Check/adjust the paper guides, if
	necessary.
	• Ensure that the paper is the proper paper
	weight. 20 lb (75 g/m2 bond) paper is
	recommended.
	• Check for copy paper or pieces of copy paper
	remaining in the machine after a paper jam has
	been cleared.
Toner cartridge	• Your originals may contain pictures, solids, or
produces fewer copies	heavy lines. For example, your originals may be
than expected before	forms, newsletters, books, or other documents
running out of toner.	that use more toner.
	• The machine may be turned on and off
	frequently.
	• The document cover may be left open while
	copies are being made.

9.10 Troubleshooting

Scanning Problems

Condition	Suggested solutions
The scanner does	• Make sure that you place the document to be
not work.	scanned face down on the document glass, or face
	up in the Automatic Document Feeder.
	• There may not be enough available memory to hold
	the document you want to scan. Try the Prescan
	function to see if that works. Try lowering the scan
	resolution rate.
	• Check that the USB or parallel cable is connected
	properly.
	• Make sure that the USB or parallel cable is not
	defective. Switch the cable with a known good
	cable. If necessary, replace the cable.
	• If you are using a parallel cable, ensure that it is
	compliant with IEEE 1284 standards.
	• Check that the scanner is configured correctly.
	Check scan setting in the SmarThru Configuration
	or the application you want to use to make certain
	that the scanner job is being sent to the correct
	port, for example, LPT1.
The unit scans very	• Check if the machine is printing received data. If so,
slowly.	scan the document after the received data has been
	printed.
	• Graphics are scanned more slowly than text.
	• Communication speed slows in scan mode because
	of the large amount of memory required to analyze
	and reproduce the scanned image. Set your
	computer to the ECP printer mode through BIOS
	setting. It will help to increase the speed. For
	details about how to set BIOS, refer to your
	computer User’s Guide.

Fax Problems (Only for SCX-4521F)

Condition	Suggested solutions
The machine is not	• Unplug the power cord and plug it in again.
working, there is no	• Ensure that there is power to the electrical outlet.
display and the
buttons are not
working.
No dial tone sounds.	• Check that the phone line is connected properly.
	• Check that the phone socket in the wall is working
	by plugging in another phone.
The numbers stored	Make sure that the numbers are stored in memory
in memory do not	correctly. Print a Phonebook list, referring to
dial correctly.	“Phonebook List” on page 7.14.

Condition	Suggested solutions
The document does	• Make sure that the document is not wrinkled and
not feed into the	you are putting it in correctly. Check that the
machine.	document is the right size, not too thick or thin.
	• Make sure that the ADF (Automatic Document
	Feeder) cover is firmly closed.
Faxes are not	• Fax mode should be selected.
received	• Make sure that there is paper in the tray.
automatically.	• Check to see if the display shows “Memory Full”.
The machine does	• Make sure that the document is loaded in the ADF
not send.	or on the document glass.
	• “TX” should show up on the display.
	• Check the fax machine you are sending to, to see
	if it can receive your fax.
The incoming fax has	• The fax machine sending you the fax may be
blank spaces or is of	faulty.
poor-quality.	• A noisy phone line can cause line errors.
	• Check your machine by making a copy.
	• The toner cartridge may be empty. Replace the
	toner cartridge, referring to “Replacing the Toner
	Cartridge” on page 8.4.
Some of the words	The fax machine sending you the fax had a
on an incoming fax	temporary document jam.
are stretched.
There are lines on	Check your scanning glass for marks and clean it.
the documents you	See “Cleaning the Scan Unit” on page 8.3.
send.
The machine dials a	The other fax machine may be turned off, out of
number, but a	paper, or cannot answer incoming calls. Speak with
connection with the	the other machine operator and ask her/him to sort
other fax machine	out the problem.
fails.
Documents are not	There may not be enough memory to store the
stored in memory.	document. If the display shows a “Memory Full”
	message, delete from memory any documents you
	no longer need and then try again to store the
	document.
Blank areas appear	You may have chosen the wrong paper settings in
at the bottom of each	the user option setting. For details about paper
page or on other	settings, see “Setting the Paper Size and Type” on
pages, with a small	page 2.10.
strip of text at the
top.

9.11 Troubleshooting

						Problem	Possible Cause and Solution
	Common Linux Problems
						The machine	• Check if your machine is attached to your computer.
						doesn’t appear	Make sure that it is connected properly via the USB port
Problem		Possible Cause and Solution
						on the	and is turned on.
The machine		• Check if the printer driver is installed in your system.				scanners list.	• Check if the scanner driver for you machine is installed in
							your system. Open MFP Configurator, switch to Scanners
doesn’t print.		Open MFP configurator and switch to the Printers tab in
							configuration, then press Drivers. Make sure that driver
		Printers configuration window to look at the list of
							with a name corresponding to your machine's name is
		available printers. Make sure that your machine is
							listed in the window.
		displayed on the list. If not, please, invoke Add new
							• Check if the MFP port is not busy. Since functional
		printer wizard to set up your device.
							components of MFP (printer and scanner) share the same
		• Check if the printer is started. Open Printers
							I/O interface (MFP port), the situation of simultaneous
		configuration and select your machine on the printers list.
		Look at the description in the Selected printer pane. If its					access of different “consumer” application to the same
							MFP port is possible. To avoid possible conflicts, only one
		status contains “(stopped)” string, please, press the
							of them at a time is allowed to gain control over the
		Start button. After that normal operation of the printer
							device. The other “consumer” will encounter “device
		should be restored. The "stopped" status might be
							busy” response. This can usually happen while starting
		activated when some problems in printing occurred. For
							scan procedure, and appropriate message box displays.
		instance, this could be an attempt to print document
							To identify the source of the problem, you should open
		when MFP port is claimed by a scanning application.
		• Check if the MFP port is not busy. Since functional					MFP ports configuration and select the port assigned to
							your scanner. MFP port's symbol /dev/mfp0 corresponds
		components of MFP (printer and scanner) share the same
							to LP:0 designation displayed in the scanners’ options, /
		I/O interface (MFP port), the situation of simultaneous
							dev/mfp1 relates to LP:1 and so on. USB ports start at /
		access of different “consumer” application to the same
							dev/mfp4, so scanner on USB:0 relates to /dev/mfp4
		MFP port is possible. To avoid possible conflicts, only one
							respectively and so forth sequentially. In the Selected
		of them at a time is allowed to gain control over the
							port pane you can see if the port is occupied by some
		device. The other “consumer” will encounter “device
							other application. If this is the case, you should wait for
		busy” response. You should open MFP ports configuration
							completion of the current job or should press Release
		and select the port assigned to your printer. In the
							port button, if you are sure that the present port's owner
		Selected port pane you can see if the port is occupied by
							is not functioning properly.
		some other application. If this is the case, you should
		wait for completion of the current job or should press
						The machine	• Check if a document is loaded into the machine.
		Release port button, if you are sure that the present
						doesn’t scan.	• Check if your machine is connected to the computer.
		owner is not functioning properly.
							Make sure if it is connected properly if I/O error is
		Check if your application has special print option such
							reported while scanning.
		as “-oraw”. If “-oraw” is specified in the command
							• Check if MFP port is not busy. Since functional
		line parameter then remove it to print properly. For
							components of MFP (printer and scanner) share the same
		Gimp front-end, select “print” -> “Setup printer” and
							I/O interface (MFP port), the situation of simultaneous
		edit command line parameter in the command item.
							access of different “consumer” application to the same
							MFP port is possible. To avoid possible conflicts, only one
							of them at a time is allowed to gain control over the
							device. The other “consumer” will encounter “device
							busy” response. This can usually happen while starting
							scan procedure, and appropriate message box will be
							displayed.
						The machine	• To identify the source of the problem, you should open
						doesn’t scan.	MFP ports configuration and select the port assigned to
						(continued)	your scanner. MFP port’s symbol /dev/mfp0 corresponds
							to LP:0 designation displayed in the scanners’ options, /
							dev/mfp1 relates to LP:1 and so on. USB ports start at /
							dev/mfp4, so scanner on USB:0 relates to /dev/mfp4
							respectively and so forth sequentially. In the Selected
							port pane you can see if the port is occupied by some
							other application. If this is the case, you should wait for
							completion of the current job or should press Release
							port button, if you are sure that the present port’s owner
							is not functioning properly.

9.12 Troubleshooting

Problem	Possible Cause and Solution
I can’t print	• Since both Linux Printer Package and MFP driver make a
when I	symbolic link to “lpr” printing command, which is
installed both	commonly used on Unix clones, it is not recommended to
Linux Print	use both package on the same machine.
Package (LPP)	• If you still want to use both packages simultaneously,
and MFP driver	please install the LPP first.
on the same	• If you want to uninstall only one of them, please uninstall
machine	both packages and install that one you want to use again.
simultaneously.	• If you don’t want to uninstall MFP driver and install it
	again, you may make the necessary symbolic link
	yourself. Please, log in as root user and invoke the
	following command:
	ln -sf /usr/local/bin/samsung/slpr /usr/bin/lpr
Can’t scan via	• Check if Gimp Front-end has “Xsane:Device dialog..” on
Gimp Front-	the “Acquire” menu. If not, you should install Xsane plug-
end.	in for Gimp on the your computer. You can find Xsane
	plug-in package for Gimp on Linux distribution CD or
	Gimp home page. For the detail information, refer to the
	Help for Linux distribution CD or Gimp Front-end
	application.
	If you wish to use other kind of scan application, refer to
	the Help for application.
I encounter	Please avoid changing print job parameters (via SLPR
error “Cannot	utility, for example) while a print job is in progress. Known
open MFP port	versions of CUPS server break the print job whenever print
device file”	options are changed and then try to restart the job from
when printing	the beginning. Since Linux MFP driver locks MFP port while
a document.	printing, the abrupt termination of the driver keeps the port
	locked and therefore unavailable for subsequent print jobs.
	If this situation occurred, please, try to release the MFP
	port.

Common Macintosh Problems

Problems in Printer Setup Utility

Problem	Possible Cause and Solution
There is described	• Software is not installed correctly. Reinstall the
"driver not	software. See Software User’s Guide.
installed" at Product	• Make sure that you are using a high-quality cable.
List Window after
you click Add and
Select USB.
Your product not	• Make sure that the cables are connected correctly
listed at Product	and the printer is turned on.
List Window after	• Check if “Ready” appears on the display of the
you click Add and	control panel. If not, clear the problem depending
Select USB.	on the error message; see “Clearing LCD Error
	Messages” on page 9.4.
	• Make sure that the correct printer driver has been
	selected at Product List Window after you click Add
	and Select USB.

9.13 Troubleshooting

10 Specifications

This chapter includes:

•General Specifications

•Scanner and Copier Specifications

•Printer Specifications

•Facsimile Specifications (Only for SCX-4521F)

•Paper Specifications

General Specifications

	Item	Description
	Model name	SCX-4321(WT21MFC)
		SCX-4521F(WT21MFF)
	Automatic document	Up to 30 sheets (20 lb, 75 g/m2 bond)
	feeder
	ADF document size	Width: 5.6 to 8.5 inches (142 to 216 mm)
		Length: 5.8 to 14 inches (148 to 356 mm)
		Tray with multi-pages: 150 multi-pages for plain
	Paper input capacity	paper (20 lb, 75 g/m2 bond)
		Tray with single page and manual tray: 1 single page
		for plain paper, card stock, labels, transparencies,
		and envelopes (16 ~43 lb, 60 ~ 165 g/m2 bond)
	Paper output capacity	50 sheets
	Paper type	Plain paper, Transparencies, Labels, Card stock,
		Envelopes
	Consumables	1-piece toner cartridge system
	Power requirements	110 - 127 VAC, 50/60 Hz, 4.5 A
		220 - 240 VAC, 50/60 Hz, 2.5 A
	Power consumption	Sleep mode: Under 10 W
		Average: 350 W
		Standby mode: Less than 35 dBA
	Noise*	Warm up: Less than 49 dBA
		Copying: Less than 55 dBA
		Printing: Less than 50 dBA
	Warm-up time	Less than 35 seconds
	Operating conditions	Temperature: 50 oF to 89 oF (10 oC to 32 oC)
		Humidity: 20 % to 80 % RH
	LCD	16 characters x 2 lines
	Toner cartridge life**	3,000 pages (for starter, 1,000 pages) @ ISO 19752
		5 % coverage
	SET dimension	17.2 x 14.7x 14.5 in. (438 x 374 x 368 mm)
	(W x D x H)
	Weight	10.1 Kg (including consumables)
	Package weight	Paper: 1.2 Kg
		Plastic: 0.5 Kg
	Duty cycle (Monthly)	Print: Up to 4,200 pages

*.Sound Pressure Level, ISO7779

**.The number of pages may be affected by operating environment, printing interval, media type, and media size.

10.1 Specifications

Scanner and Copier

Specifications

	Item	Description
	Compatibility	TWAIN standard / WIA standard
	Scanning method	ADF and Flat-bed CIS (Contact Image Sensor)
		module
	Resolution	Optical: 600 x 600 dpi (Mono and color)
		Enhanced: 4,800 x 4,800 dpi
	Effective scanning length	Platen: 11.7 in. (297 mm)
		ADF: 14 in. (356 mm)
	Effective scanning width	Max. 8.2 in. (208 mm)
	Color bit depth	24 bit
	Mono bit depth	1 bit for Black & White mode
		8 bit for Gray mode
	Copy speed*	Up to 20 ppm in A4 (20 ppm in Letter)
	First copy out time	Standby mode: 11 seconds
		Power save mode: 40 seconds
		Scan: 600 x 300 (Text, Text/Photo)
	Copy resolution	600 x 600 (Photo using Platen)
		600 x 300 (Photo using ADF)
		Print: 600 x 600 (Text, Text/Photo, Photo)
	Zoom rate	Platen: 25 ~ 400 %
		ADF: 25 ~ 100 %
	Multiple copies	1-99 pages
	Gray scale	256 levels

*. Copy Speed is based on Single Document Multiple Copy.

Printer Specifications

	Item	Description
	Printing method	Laser Beam Printing
	Printing speed*	Up to 20 ppm in A4 (20 ppm in Letter)
	First print out time	Standby mode: 11 seconds
		Power save mode: 41 seconds
		Letter, Legal, A4, Folio, Executive, A5, A6 card,
		Envelope 10, Envelope DL, Envelope C5, Envelope
	Paper size	C6, Envelope 7-3/4 (Monarch), JIS B5, ISO B5
		* Min.: 3 x 5 in. (76 x 127 mm)
		Max.: 8.5 x 14 in. (216 x 356 mm)
	Printer resolution	600 x 600 dpi
	Emulation	SPL (Samsung Printer Language)
	OS Compatibility**	Windows 98/2000/NT 4.0/Me/XP, Various Linux OS
		(USB only), Macintosh 10.3
	Memory	10 MB (Non-expendable)
	Inteface	IEEE 1284 Parallel,
		USB 1.1 (Compatible with USB 2.0)

*. Print speed will be affected by operating system used, computing performance, application software, connecting method, media type, media size, and job complexity.

**.Please visit www.samsungprinter.com to download the latest software version.

10.2 Specifications

Facsimile Specifications

(Only for SCX-4521F)

	Item	Description
	Compatibility	ITU-T Group 3
	Applicable line	Public Switched Telephone Network (PSTN) or
		behind PABX
	Data coding	MH/MR/MMR (ECM Mode)/JPEG
	Modem speed	33.6 Kbps
		Approx. 3 seconds/page
	Transmission speed	* Transmission time applies to memory
		transmission of text data with ECM compression
		using only ITU-T No.1 Chart.
	Maximum document	Platen: 11.7 in. (297 mm)
	length	ADF: 14 in. (356 mm)
	Paper size	Letter, A4, Legal, Folio, Executive, B5
		Standard: 203 x 98 dpi
		Fine: 203 x 196 dpi
	Resolution	Super Fine: 300 x 300 dpi
		Photo: 203 x 196 dpi
		Color: 200 x 200 dpi
	Memory	2 MB
	Halftone	256 levels
	Auto dialer	Speed dialing (up to 100 numbers)

10.3 Specifications

Paper Specifications

Overview

Your machine accepts a variety of print materials, such as cutsheet paper (including up to 100% recycled fiber content paper), envelopes, labels, transparencies and custom-size paper. Properties, such as weight, composition, grain and moisture content, are important factors affecting the machine’s performance and the output quality. Paper that does not meet the guidelines outlined in this user’s guide can cause the following problems:

•Poor print quality

•Increased paper jams

•Premature wear on the machine.

NOTES:

•Some paper may meet all of the guidelines in this guide and still not produce satisfactory results. This may be the result of improper handling, unacceptable temperature and humidity levels, or other variables over which Samsung has no control.

•Before purchasing large quantities of paper, insure the paper meets the requirements specified in this user’s guide.

CAUTION: Using paper that does not meet these specifications may cause problems, requiring repairs. These repairs are not covered by the Samsung warranty or service agreements.

Supported Sizes of Paper

	Paper	Dimensions*	Weight	Capacity**
	Letter	8.5 x 11 in.
		(216 x 279 mm)
	A4	8.3 x 11.7 in.
		(210 x 297 mm)
	Executive	7.3 x 10.5 in.	• 16 to 24 lb	• 150
		(184 x 267 mm)
			(60 to 90 g/m2	sheets of
				20 lb
		8.5 x 14 in.
	Legal		bond) for the tray
				(75 g/m2
		(216 x 356 mm)	with multi-pages
			feeding	bond)
		5.8 x 8.2 in.
				paper for
	A5		• 16 to 43 lb
		(148 x 210 mm)		the tray
			(60 to 165 g/m2
				• 1 sheet of
		4.1 x 5.8 in.	bond) for the tray
	A6			paper for
		(105 x 148 mm)	with single page
				the tray or
			feeding and the
				manual
		6.9 x 9.8 in.
	ISO B5		manual tray
				tray
		(176 x 250 mm)
	JIS B5	7.2 x 10.1 in.
		(182 x 257 mm)
	Folio	8.5 x 13 in.
		(216 x 330 mm)
	Minimum size	3 x 5 in	16 to 43 lb (60 to 165
	(custom)	(76 x 127 mm)	g/m2 bond) for the
			tray with single page
	Maximum size	8.5 x 14 in
			feeding and the
	(custom)	(216 x 356 mm)
			manual tray	1 sheet of
				paper for
	Transparency		138 to 146 g/m2
				the tray or
		Same minimum
				manual tray
	Labels		120 to 150 g/m2
		and maximum
		paper sizes as
	Cards		90 to 163 g/m2
		listed above.
	Envelopes		75 to 90 g/m2

*. The machine supports a wide range of media sizes. See “Paper Type, Input Sources, and Capacities” on page 3.1

**.Capacity may differ depending on media weight, thickness, and environmental conditions.

NOTE: You may experience jams when using print materials with a length of less than 5 in. (127 mm). For optimum performance, ensure that you are storing and handling the paper correctly. Please refer to “Paper Storage Environment” on page 10.5.

Guidelines for Using Paper

For the best result, use conventional 20 lb (75 g/m2 bond) paper. Ensure that the paper is of good quality, and free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, voids, and curled or bent edges.

If you are unsure of what type of paper you are loading, such as bond or recycled paper, check the label on the package.

The following problems may cause print quality deviations, jamming or even damage to the machine:

	Symptom	Problem with Paper	Solution
	Poor print quality or	Too moist, too rough,	Try another kind of
		too smooth or	paper, between 100 ~
	toner adhesion,
		embossed; faulty paper	400 Sheffield, 4 ~ 5 %
	problems with feeding
		lot	moisture content.
	Dropout, jamming,		Store paper flat in its
		Stored improperly	moisture-proof
	curl
			wrapping.
	Increased gray
	background shading/	Too heavy	Use lighter paper.
	printer wear
	Excessive curl	Too moist, wrong grain
		direction or short-grain	Use long-grain paper.
	problems with feeding
		construction
	Jamming, damage to	Cutouts or perforations	Do not use paper with
	machine		cutouts or perforations.
	Problems with feeding	Ragged edges	Use good quality paper.

NOTES:

•Do not use letterhead paper printed with low-temperature inks, such as those used in some types of thermography.

•Do not use raised or embossed letterhead.

•The machine uses heat and pressure to fuse toner to the paper. Insure that any colored paper or preprinted forms use inks that are compatible with this fusing temperature (200 °C or 392 °F for 0.1 second).

10.4 Specifications

Paper Specifications

Category	Specifications
Acid content	5.5 pH or lower
Caliper	3.0 ~ 7.0 mils (0.094 ~ 0.18 mm)
Curl in ream	Flat within 0.02 in. (5 mm)
Cut edge conditions	Cut with sharp blades with no visible fray.
	Must not scorch, melt, offset or release hazardous
Fusing compatibility	emissions when heated to 200 °C (392 °F) for 0.1
	second.
Grain	Long grain
Moisture content	4 % ~ 6 % by weight
Smoothness	100 ~ 400 Sheffield

Paper Output Capacity

Output Location	Capacity
Face-down output tray	50 sheets of 20 lb (75 g/m2 bond) paper

Paper Storage Environment

Paper storage environmental conditions directly affect the feed operation.

Ideally, the machine and paper storage environment should be at or near room temperature, and not too dry or humid. Remember that paper is hygroscopic; it absorbs and loses moisture rapidly.

Heat works with humidity to damage paper. Heat causes the moisture in paper to evaporate, while cold causes it to condense on the sheets. Heating systems and air conditioners remove most of the humidity from a room. As paper is opened and used, it loses moisture, causing streaks and smudging. Humid weather or water coolers can cause the humidity to increase in a room. As paper is opened and used it absorbs any excess moisture, causing light print and dropouts. Also, as paper loses and gains moisture it can become distorted. This can cause paper jams.

Care should be taken not to purchase more paper than can be used in a short time (about 3 months). Paper stored for long periods may experience heat and moisture extremes, which can cause damage. Planning is important to prevent damage to large supplies of paper.

Unopened paper in sealed reams can remain stable for several months before use. Opened packages of paper have more potential for environment damage, especially if they are not wrapped with a moisture-proof barrier.

10.5 Specifications

The paper storage environment should be properly maintained to ensure optimum performance. The required condition is 20 to 24 °C (68 to 75 °F), with a relative humidity of 45 % to 55 %. The following guidelines should be considered when evaluating the paper’s storage environment:

•Paper should be stored at or near room temperature.

•The air should not be too dry or too humid.

•The best way to store an opened ream of paper is to rewrap it tightly in its moisture-proof wrapping. If the machine environment is subject to extremes, unwrap only the amount of paper to be used during the day’s operation to prevent unwanted moisture changes.

Envelopes

Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. Successful printing on envelopes depends upon the quality of the envelopes. When selecting envelopes, consider the following components:

•Weight: The weight of the envelope paper should not exceed 20 lb (75 g/m2 bond) or jamming may occur.

•Construction: Prior to printing, envelopes should lie flat with less than 0.25 in. (6 mm) curl, and should not contain air.

•Condition: Envelopes should not be wrinkled, nicked or otherwise damaged.

•Temperature: You should use envelopes that are compatible with the heat and pressure of the machine.

•Size: You should only use envelopes within the following size ranges.

Minimum	Maximum
3 x 5 in.	8.5 x 14 in.
(76 x 127 mm)	(216 x 356 mm)

NOTES:

•Load only one sheet of paper at a time to print envelopes.

•You may experience some paper jams when using any media with a length less than 5.5 in. (140 mm). This may be caused by paper that has been affected by environmental conditions. For optimum performance, make sure you are storing and handling the paper correctly. Please refer to “Paper Storage Environment” on page 10.5.