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.

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

Press

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.

Press

Enter

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

Press

Enter

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

If the problem remains, repeat steps 1 through 4.

To return to Standby mode, press

Stop/Clear

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

Ignoring the Toner Empty Message

(Only for

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.

Press

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

Press the Scroll button ( or ) to select “On” or “Off”.

Press

To return to Standby mode, press

SCX-4521F

until “Machine Setup” appears on the display.

Select “On” to ignore the [Toner Empty] message. Select “Off” to stop printing incoming faxes when the

message appears. This is the default setting.

Enter

to save the selection.

)

Enter

Stop/Clear

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).

8.5

Maintenance

Replacing the ADF Rubber Pad

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

Open the ADF cover.

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

Insert a new ADF rubber pad into place.

Close the ADF cover.

8.6

Maintenance

9 Troubleshooting

Clearing Document Jams

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

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

Input Misfeed

Remove any remaining page(s) from the ADF.

Open the ADF cover.

Pull the document gently out of the ADF.

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

OTE

: To prevent document jams, use the document glass for

thick, thin, or mixed paper-type documents.

9.1

Troubleshooting

Exit Misfeed

Remove any remaining page(s) from the ADF.

Open the ADF cover.

Remove the misfed documents from the document output tray.

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

In the Tray

Remove 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.

Open and close the front door to resume printing.

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] Open/Close Door

[Paper Jam 1] Open/Close Door

[Paper Jam 2] 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.

In the tray or manual tray

In the fuser area or around the toner cartridge.

In the paper exit area page 9.3

page 9.2

page 9.3

In the Manual Tray

Remove 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.

Open and close the front door to resume printing.

9.2

Troubleshooting

In the Fuser Area or Around the Toner Cartridge

OTE

: The fuser area is hot. Take care when removing paper

from the machine.

Open the front door.

Pull the toner cartridge out, lightly pushing it down.

If necessary, pull the manual tray out.

Remove the jammed paper by gently pulling it straight out.

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

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

In the Paper Exit Area

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

If the paper does not exit, continue to step 2.

Gently pull the paper out of the output tray.

9.3

Troubleshooting

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.

Clearing LCD Error Messages

Display Meaning Suggested solutions

AUTION

removing paper from the machine.

: Inside of the machine is hot. Take care when

Close the rear cover.

Open and close the front door to resume printing.

Cancel ? 1:Yes 2:No (only for SCX4521F)

[Comm. Error] (only for SCX4521F)

CRU Fuse Error The toner cartridge is

[Document Jam] The loaded document

[Front or Rear] [Cover Open]

Enter Again You entered an

Your machine’s memory has become full while trying to store a document into memory.

The machine has a communication problem.

not installed correctly.

has jammed in the ADF (Automatic Document Feeder).

The front door or rear cover is not securely latched.

unavailable item.

To cancel the fax job, press

button to accept “Yes”.

the If you want to send the pages that have been successfully

stored, press the accept “No”. You should send the remaining pages later, when memory is available.

Ask the sender to try again.

Install the toner cartridge correctly. See “Replacing the Toner Cartridge” on page 8.4.

Clear the document jam. See “Clearing Document Jams” on page 9.1.

Close the door until it locks into place.

Enter the correct item again.

button to

9.4

Troubleshooting

Display Meaning Suggested solutions

Low Heat Error There is a problem in

Open Heat Error

[Over Heat]

Group Not Available (only for SCX4521F)

[Incompatible] (only for SCX4521F)

[Line Busy] (only for SCX4521F)

[Line Error] (only for SCX4521F)

Load Document You have attempted

the fuser unit.

You have tried to select a group location number where only a single location number can be used, such as when adding locations for a broadcast operation.

The remote machine did not have the 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.

The receiving party did not answer or the line is already engaged.

Your machine cannot connect with the remote machine or has lost contact because of a problem with the phone line.

to set up a copy or fax operation with no document loaded into the ADF.

Unplug the power cord and plug it back in. If the problem persists, please call for service.

Use a speed dial number or dial a number manually using the number keypad.

Reconfirm the remote machine’s features.

Try again after a few minutes.

Try a g a in. I f the p r oble m persists, wait an hour or so for the line to clear and try again. Or, turn the ECM mode on. See “ECM Mode (Error Correction Mode)” on page 7.15.

Lo ad a docume nt int o the A DF and try again.

Memory Full (only for SCX4521F)

[No Answer] (only for SCX4521F)

[No Cartridge] The toner cartridge is

Assigned

Not (only for SCX4521F)

[No Paper] Add Paper

Operation Not Assigned (only for SCX4521F)

Out of Range The current date and

[Paper Jam 0] Open/Close Door

[Paper Jam 1] Open/Close Door

The memory is full. Delete unnecessary

The receiving fax machine has not answered after several redial attempts.

not installed.

• The speed dial location you tried to use has no number assigned to it.

• The ID you entered is not assigned

The paper in the tray has run out.

You are doing the Add/Cancel operation, but there are no jobs waiting.

time you entered is not correct

Paper has jammed in the feeding area of the tray.

Paper has jammed in the fuser area or around the toner cartridge.

documents and retransmit after more memory becomes available. Alternatively, split the transmission into more than one operation.

Try again. Make sure that the receiving machine is operational.

Install the toner cartridge. See “Installing the Toner Cartridge” on page 2.2.

• Dial the number manually using the number keypad or assign the number. For storing a number, see “Automatic Dialing” on page 7.9.

• Enter the correct ID page 2.10

Load paper in the tray. See “Loading Paper” on page 2.3.

Check the display to see if there are any scheduled jobs. The display should indicate them in Standby mode; for example, Delay Fax.

Enter the correct date and

time

Clear the jam. See “In the Tray” on page 9.2.

Clear the jam. See “In the Fuser Area or Around the Toner Cartridge” on page 9.3.

[LSU Error] A problem has

occurred in the LSU (Laser Scanning Unit).

Memory Dial Full (only for SCX4521F)

The fax jobs queue in the memory is full.

Unplug the power cord and plug it back in. If the problem persists, please call for service.

Cancel unnecessary fax jobs in the memory.

Troubleshooting

[Paper Jam 2] Check Inside

[Power Failure] Power has turned off

Paper has jammed in the paper exit area.

then on and the machine’s memory has not been saved.

9.5

Clear the jam. See “In the Paper Exit Area” on page 9.3.

The job which you were trying to do before the power failure must be completely re-done.

Display Meaning Suggested solutions

Remove Documents from ADF

[Retry Redial?] (only for SCX4521F)

Scanner Locked The scanner module is

[Stop Pressed] The

[Toner Empty] The toner cartridge

[Toner Low] The toner is almost

The Favorite Copy button is set to Clone, Autofit, ID Card Copy or Poster and you press the button.

The machine is waiting for a specified time interval to redial a previously busy station.

locked.

Stop/Clear

button has been pressed during a copy or fax operation.

has run out.

empty.

The Clone, Autofit, ID Card Copy or Poster feature does not work with ADF. Remove the documents in the ADF.

You can press immediately redial, or

to cancel the redial

Clear

operation.

Upload the power cord and plug it back in.

Try a g a in.

Replace the toner cartridge with a new one. See “Replacing the Toner Cartridge” on page 8.4.

Take out the toner cartridge and gently shake it. By doing this, you can temporarily reestablish printing operations. See “Redistributing Toner” on page 8.4.

Enter

Stop/

Solving Other Problems

The following chart lists some conditions that may occur and the recommended solutions. Follow the suggested solutions until the problem is corrected. If the problem persists, please call for service.

Paper Feeding Problems

Condition Suggested solutions

Paper is jammed during printing.

Paper sticks together.

Multiple sheets of paper do not feed.

Paper does not feed into the machine.

Clear the paper jam. See “Clearing Paper Jams” on page 9.2.

• Ensure that there is not too much paper in the tray. The tray can hold up to 150 sheets of paper, depending on the thickness of your paper.

• Make sure that you are using the correct type of paper. See “Paper Specifications” on page 10.3

• Remove paper from the tray and flex or fan the paper.

• Humid conditions may cause some paper to stick together.

• Different types of paper may be stacked in the tray. Load paper of only one type, size, and weight.

• If multiple sheets have caused a paper jam, clear the paper jam. See “Clearing Paper Jams” on page 9.2.

• Remove any obstructions inside 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 jamming.

Transparencies stick together in the paper exit.

Envelopes skew or fail to feed correctly.

9.6

Troubleshooting

• There is too much paper in the tray. Remove excess 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.

Use only transparencies specifically designed for laser printers. Remove each transparency as it exits from the machine.

Ensure that the paper guides are against both sides of the envelopes.

Printing Problems

Condition Possible cause Suggested solutions

The machine does not print.

The machine is not receiving power.

The machine is not selected as the default printer.

Check the machine for the following:

• The front door is not closed.

• Paper is jammed.

• No paper is loaded.

• The toner cartridge is not installed.

Check the power cord connections. Check the power switch and the power source.

your printer

Select default printer in your Windows.

After locating the problem, clear it.

• Close the door.

• Clear the paper jam. See “Clearing Paper Jams” on page 9.2.

• Load paper. See “Loading Paper” on page 2.3.

• Install the toner cartridge. See “Installing the Toner Cartridge” on page 2.2.

If a printer system error occurs, contact your service representative.

as your

The machine selects print materials from the wrong paper source.

A print job is extremely slow.

Half the page is blank.

The paper source selection in the printer properties may be incorrect.

The job may be very complex.

If you are using Windows 98/Me, the Spooling Setting may be set incorrectly.

The page orientation setting may be incorrect.

For many software applications, the paper source selection is

Paper

found under the the printer properties. Select the correct paper source. For details,

Software User’s Guide

see

Reduce the complexity of the page or try adjusting the print quality settings.

The maximum print speed of your machine is 20 PPM for Letter-sized paper and 20 PPM for A4-sized paper.

From the

Settings

click the choose

Details Spool Settings

the desired spool setting.

Change the page orientation in your application. For details, see

Software User’s Guide

Start

and

Printers

your printer

Properties

tab, and then choose the

tab within

menu, choose

. Right-

icon,

, click the

button. Select

The connection cable between the computer and the machine is not connected properly.

The connection cable between the computer and the machine is defective.

The port setting is incorrect.

The machine may be configured incorrectly.

The printer driver may be incorrectly installed.

The machine is malfunctioning.

Disconnect the printer cable and reconnect it.

If possible, attach the cable to another computer that is working properly and print a job. You can also try using a different printer cable.

Check the Windows printer setting to make sure that the print job is sent to the correct port, for example, LPT1. If the computer has more than one port, make sure that the machine is attached to the correct one.

Check the printer properties to ensure that all of the print settings are correct.

Repair the printer software. For details, see

Guide

Check the display message on the control panel to see if the machine is indicating a system error.

Software User’s

The machine prints, but the text is wrong, garbled, or incomplete.

The paper size and the paper size settings do not match.

The printer cable is loose or defective.

The wrong printer driver was selected.

The software application is malfunctioning.

The operating system is malfunctioning.

Ensure that the paper size in the printer driver settings matches the paper in the tray. Or, ensure that the paper size in the printer driver settings matches the paper selection in the software application settings you use.

Disconnect the printer cable and reconnect. Try a print job that you have already printed successfully. If possible, attach the cable and the machine to another computer and try a print job that you know works. Finally, try a new printer cable.

Check the application’s printer selection menu to ensure that your machine is selected.

Try printing a job from another application.

Exit Windows and reboot the computer. Turn the machine off and then back on again.

9.7

Troubleshooting

Condition Possible cause Suggested solutions

Pages print, but are blank.

An error occurs repeatedly when you are printing with the USB connection.

The toner cartridge is defective or out of toner.

The file may have blank pages.

Some parts, such as the controller or the board, may be defective.

When the USB mode is set to “Fast”, some PC user may experience poor USB communication.

Redistribute the toner, if necessary. See “Redistributing Toner” on page 8.4. If necessary, replace the toner cartridge.

Check the file to ensure that it does not contain blank pages.

Contact a service representative.

Change the USB mode to “Slow”. To do so, follow these steps:

1. Press

Setup” appears on the display.

2. Press the scroll

until “USB Mode” appears on the bottom line and press

Enter

3. Press the scroll

to select “Slow”.

4. Press

selection.

5. Press

Standby Mode.

until “Machine

button ( or )

Enter

to save the

Stop/Clear

to return to

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 print

AaBbCc AaBbCc AaBbCc AaBbCc

AaBbCc

Toner specs

AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc

If a vertical white streak or faded area appears on the page:

• The toner supply is low. You may be able to temporarily

• extend the toner cartridge life. See “Redistributing Toner” on page 8.4. If this does not improve the print quality, install a new toner cartridge.

• The paper may not meet paper specifications; for 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 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.

• The paper may not meet specifications; for example, the paper is too moist or too rough. See “Paper Specifications” on page 10.3.

• The transfer roller may be dirty. Clean the inside of your machine. See “Cleaning the Inside” on page 8.2.

• The paper path may need cleaning. See “Cleaning the Drum” on page 8.5.

Software User’s Guide

and “Toner Save

Dropouts

AaBbCc AaBbCc

9.8

Troubleshooting

AaBbCc AaBbCc AaBbCc

If faded areas, generally rounded, occur randomly on the page:

• A single sheet of paper may be defective. Try reprinting the job.

• The moisture content of the paper is uneven or the paper has moist spots on its surface. Try a different 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 “ repetitive defects

• If these steps do not correct the problem, contact a service representative.

” on page 9.9.

Vertical

Condition Suggested solutions

Vertical lines

AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc

Gray background

AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc

Toner smear

Vertical repetitive defects

AaBbCc AaBbCc

AaBbCc AaBbCc AaBbCc

If black vertical streaks appear on the page:

• The drum inside the toner cartridge has probably been scratched. Remove the toner cartridge and install a new one. See “Replacing the Toner Cartridge” on page 8.4.

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.

If the amount of background shading becomes unacceptable:

• Change to a lighter weight paper. See “Paper Specifications” on page 10.3.

• Check the machine’s environment: very dry (low humidity) or high humidity (higher than 80% RH) conditions can increase the amount of background shading.

• Remove the old toner cartridge and install a new one. See “Replacing the Toner Cartridge” on page 8.4.

• 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 marks repeatedly appear on the printed side of the page at even intervals:

• The toner cartridge may be damaged. If a repetitive mark occurs on the page, print a cleaning sheet several times to clean the cartridge; see “Cleaning the Drum” on page 8.5. After the printout, if you still have the same problems, remove the toner cartridge and install a new one. See “Replacing the Toner Cartridge” on 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.

Background scatter

Misformed characters

Page skew

AaBbCc

Curl or wave

Wrinkles or creases

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

Copying Problems

Back of printouts are dirty

Black pages

Loose toner

Character Voids

Horizontal stripes

AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc

Check for leaking toner. Clean the inside of the machine. See “Cleaning the Inside” on page 8.2.

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

• 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.

• 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 voids are white areas within parts of characters that should be solid black:

• If you are using transparencies, try another type of 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.

If horizontally aligned black streaks or smears appear:

• The toner cartridge may be installed improperly. Remove the cartridge and reinsert it.

• The toner cartridge may be defective. 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.

Condition Suggested solutions

Copies are too light or too dark.

Smears, lines, marks, or spots appears on copies.

Copy image is skewed. • Ensure that the original is face down on the

Blank copies print out. Ensure that the original is face down on the

Image rubs off the copy easily.

Frequent copy paper jams occur.

Toner cartridge produces fewer copies than expected before running out of toner.

Use the background of the copies.

• If defects are on the original, press the

• If no defects are on the original, clean the scan

• Check that the copy paper is loaded correctly.

document glass or face up in the ADF.

• Replace the paper in the tray with paper from a

• In high humidity areas, do not leave paper in the

• Fan the stack of paper, then turn it over in the

• Ensure that the paper is the proper paper

• Check for copy paper or pieces of copy paper

• Your originals may contain pictures, solids, or

• The machine may be turned on and off

• The document cover may be left open while

Darkness

your copies.

unit. See “Cleaning the Scan Unit” on page 8.3.

document glass or face up in the ADF (Automatic Document Feeder).

new package.

machine for extended periods of time.

tray. Replace the paper in the tray with a fresh supply. Check/adjust the paper guides, if necessary.

weight. 20 lb (75 g/m recommended.

remaining in the machine after a paper jam has been cleared.

heavy lines. For example, your originals may be forms, newsletters, books, or other documents that use more toner.

frequently.

copies are being made.

button to darken or lighten the

button to lighten the background of

bond) paper is

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.

9.10

Troubleshooting

Scanning Problems

Condition Suggested solutions

The scanner does not work.

The unit scans very slowly.

Fax Problems

• Make sure that you place the document to be 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.

• Check if the machine is printing received data. If so, 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.

(Only for

SCX-4521F

The document does not feed into the machine.

Faxes are not received automatically.

The machine does not send.

The incoming fax has blank spaces or is of poor-quality.

Some of the words on an incoming fax are stretched.

There are lines on the documents you send.

The machine dials a number, but a connection with the

)

other fax machine fails.

• Make sure that the document is not wrinkled and you are putting it in correctly. Check that the document is the right size, not too thick or thin.

• Make sure that the ADF (Automatic Document Feeder) cover is firmly closed.

• Fax mode should be selected.

• Make sure that there is paper in the tray.

• Check to see if the display shows “Memory Full”.

• Make sure that the document is loaded in the ADF 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 fax machine sending you the fax may be faulty.

• 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.

The fax machine sending you the fax had a temporary document jam.

Check your scanning glass for marks and clean it. See “Cleaning the Scan Unit” on page 8.3.

The other fax machine may be turned off, out of paper, or cannot answer incoming calls. Speak with the other machine operator and ask her/him to sort out the problem.

Condition Suggested solutions

The machine is not working, there is no display and the buttons are not working.

No dial tone sounds. • Check that the phone line is connected properly.

The numbers stored in memory do not dial correctly.

• Unplug the power cord and plug it in again.

• Ensure that there is power to the electrical outlet.

• Check that the phone socket in the wall is working by plugging in another phone.

Make sure that the numbers are stored in memory correctly. Print a Phonebook list, referring to “Phonebook List” on page 7.14.

Troubleshooting

Documents are not stored in memory.

Blank areas appear at the bottom of each page or on other pages, with a small strip of text at the top.

9.11

There may not be enough memory to store the 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.

You may have chosen the wrong paper settings in the user option setting. For details about paper settings, see “Setting the Paper Size and Type” on page 2.10.

Common Linux Problems

Problem Possible Cause and Solution

The machine doesn’t print.

• Check if the printer driver is installed in your system. Open MFP configurator and switch to the Printers tab in Printers configuration window to look at the list of available printers. Make sure that your machine is displayed on the list. If not, please, invoke Add new printer wizard to set up your device.

• Check if the printer is started. Open Printers configuration and select your machine on the printers list. Look at the description in the Selected printer pane. If its status contains “(stopped)” string, please, press the

Start

button. After that normal operation of the printer should be restored. The "stopped" status might be activated when some problems in printing occurred. For instance, this could be an attempt to print document when MFP port is claimed by a scanning application.

Check if your application has special print option such as “-oraw”. If “-oraw” is specified in the command line parameter then remove it to print properly. For Gimp front-end, select “print” -> “Setup printer” and edit command line parameter in the command item.

Problem Possible Cause and Solution

The machine doesn’t appear on the scanners list.

The machine doesn’t scan.

• Check if your machine is attached to your computer. Make sure that it is connected properly via the USB port and is turned on.

• Check if the scanner driver for you machine is installed in your system. Open MFP Configurator, switch to Scanners configuration, then press with a name corresponding to your machine's name is listed in the window.

• Check if the MFP port is not busy. Since functional components of MFP (printer and scanner) share the same I/O interface (MFP port), the situation of simultaneous 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 displays. To identify the source of the problem, you should open MFP ports configuration and select the port assigned to 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.

• Check if a document is loaded into the machine.

• Check if your machine is connected to the computer. Make sure if it is connected properly if I/O error is reported while scanning.

• Check if MFP port is not busy. Since functional components of MFP (printer and scanner) share the same I/O interface (MFP port), the situation of simultaneous 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.

Drivers

. Make sure that driver

The machine doesn’t scan. (continued)

9.12

Troubleshooting

• To identify the source of the problem, you should open MFP ports configuration and select the port assigned to 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.

Problem Possible Cause and Solution

I can’t print when I installed both Linux Print Package (LPP) and MFP driver on the same machine simultaneously.

• Since both Linux Printer Package and MFP driver make a symbolic link to “lpr” printing command, which is commonly used on Unix clones, it is not recommended to use both package on the same machine.

• If you still want to use both packages simultaneously, please install the LPP first.

• If you want to uninstall only one of them, please uninstall both packages and install that one you want to use again.

• 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

Common Macintosh Problems

Problems in Printer Setup Utility

Problem Possible Cause and Solution

There is described "driver not installed" at Product List Window after you click Add and Select USB.

• Software is not installed correctly. Reinstall the software. See

• Make sure that you are using a high-quality cable.

Software User’s Guide

Can’t scan via Gimp Frontend.

I encounter error “Cannot open MFP port device file” when printing a document.

• Check if Gimp Front-end has “Xsane:Device dialog..” on the “Acquire” menu. If not, you should install Xsane plugin 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.

Please avoid changing print job parameters (via SLPR utility, for example) while a print job is in progress. Known versions of CUPS server break the print job whenever print options are changed and then try to restart the job from the beginning. Since Linux MFP driver locks MFP port while 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.

Your product not listed at Product List Window after you click Add and Select USB.

• Make sure that the cables are connected correctly and the printer is turned on.

• Check if “Ready” appears on the display of the control panel. If not, clear the problem depending 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

Specifications

General Specifications

This chapter includes:

• General Specifications

• Scanner and Copier Specifications

• Printer Specifications

• Facsimile Specifications

• Paper Specifications

(Only for

SCX-4521F

Item Description

Model name

)

Automatic document feeder

ADF document size

Paper input capacity

Paper output capacity 50 sheets

Paper type

Consumables 1-piece toner cartridge system

Power requirements

Power consumption

SCX-4321(WT21MFC)

SCX-4521F(WT21MFF)

Up to 30 sheets (20 lb, 75 g/m

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 (20 lb, 75 g/m

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/m

Plain paper, Transparencies, Labels, Card stock, Envelopes

110 - 127 VAC, 50/60 Hz, 4.5 A 220 - 240 VAC, 50/60 Hz, 2.5 A

Sleep mode: Under 10 W Average: 350 W

bond)

Standby mode: Less than 35 dBA

Noise

Warm-up time Less than 35 seconds

Operating conditions

LCD 16 characters x 2 lines

Toner cartridge life

SET dimension (W x D x H)

Weight 10.1 Kg (including consumables)

Package weight

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.

Warm up: Less than 49 dBA Copying: Less than 55 dBA Printing: Less than 50 dBA

Temperature: 50 Humidity: 20 % to 80 % RH

3,000 pages (for starter, 1,000 pages) @ ISO 19752

5 % coverage

17.2 x 14.7x 14.5 in. (438 x 374 x 368 mm)

Paper: 1.2 Kg Plastic: 0.5 Kg

F to 89 oF (10 oC to 32 oC)

10.1

Specifications

Scanner and Copier

Printer Specifications

Specifications

Item Description

Compatibility TWAIN standard / WIA standard

Scanning method

Resolution

Effective scanning length

Effective scanning width Max. 8.2 in. (208 mm)

Color bit depth 24 bit

Mono bit depth

Copy speed

First copy out time

Copy resolution

ADF and Flat-bed CIS (Contact Image Sensor) module

Optical: 600 x 600 dpi (Mono and color) Enhanced: 4,800 x 4,800 dpi

Platen: 11.7 in. (297 mm)

ADF: 14 in. (356 mm)

1 bit for Black & White mode 8 bit for Gray mode

Up to 20 ppm in A4 (20 ppm in Letter)

Standby mode: 11 seconds Power save mode: 40 seconds

Scan: 600 x 300 (Text, Text/Photo)

600 x 600 (Photo using Platen) 600 x 300 (Photo using ADF)

Print: 600 x 600 (Text, Text/Photo, Photo)

Item Description

Printing method Laser Beam Printing

Printing speed

First print out time

Paper size

Printer resolution 600 x 600 dpi

Emulation SPL (Samsung Printer Language)

OS Compatibility

Memory 10 MB (Non-expendable)

Inteface

*. 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 soft-

ware version.

Up to 20 ppm in A4 (20 ppm in Letter)

Standby mode: 11 seconds Power save mode: 41 seconds

Letter, Legal, A4, Folio, Executive, A5, A6 card, Envelope 10, Envelope DL, Envelope C5, Envelope 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)

Windows 98/2000/NT 4.0/Me/XP, Various Linux OS (USB only), Macintosh 10.3

IEEE 1284 Parallel, USB 1.1 (Compatible with USB 2.0)

Zoom rate

Multiple copies 1-99 pages

Gray scale 256 levels

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

Platen: 25 ~ 400 % ADF: 25 ~ 100 %

10.2

Specifications

Facsimile Specifications

(Only for SCX-4521F)

Paper Specifications

Item Description

Compatibility ITU-T Group 3

Applicable line

Data coding MH/MR/MMR (ECM Mode)/JPEG

Modem speed 33.6 Kbps

Transmission speed

Maximum document length

Paper size Letter, A4, Legal, Folio, Executive, B5

Resolution

Memory 2 MB

Halftone 256 levels

Public Switched Telephone Network (PSTN) or behind PABX

Approx. 3 seconds/page * Transmission time applies to memory transmission of text data with ECM compression using only ITU-T No.1 Chart.

Platen: 11.7 in. (297 mm) ADF: 14 in. (356 mm)

Standard: 203 x 98 dpi Fine: 203 x 196 dpi Super Fine: 300 x 300 dpi Photo: 203 x 196 dpi Color: 200 x 200 dpi

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.

OTES

• 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.

AUTION

specifications may cause problems, requiring repairs. These repairs are not covered by the Samsung warranty or service agreements.

: Using paper that does not meet these

Auto dialer Speed dialing (up to 100 numbers)

10.3

Specifications

Paper

Letter

Executive

Legal

ISO B5

JIS B5

Folio

Supported Sizes of Paper

Dimensions

8.5 x 11 in. (216 x 279 mm)

8.3 x 11.7 in. (210 x 297 mm)

7.3 x 10.5 in. (184 x 267 mm)

8.5 x 14 in. (216 x 356 mm)

5.8 x 8.2 in. (148 x 210 mm)

4.1 x 5.8 in. (105 x 148 mm)

6.9 x 9.8 in. (176 x 250 mm)

7.2 x 10.1 in. (182 x 257 mm)

8.5 x 13 in. (216 x 330 mm)

Weight

• 16 to 24 lb (60 to 90 g/m

bond) for the tray with multi-pages feeding

• 16 to 43 lb (60 to 165 g/m

bond) for the tray with single page feeding and the manual tray

Guidelines for Using Paper

Capacity

• 150

sheets of 20 lb

(75 g/m

bond) paper for the tray

• 1 sheet of paper for the tray or

Poor print quality or toner adhesion, problems with feeding

Dropout, jamming, curl

manual tray

Increased gray background shading/ printer wear

Excessive curl problems with feeding

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

Too moist, too rough, too smooth or embossed; faulty paper lot

Try another kind of paper, between 100 ~ 400 Sheffield, 4 ~ 5 % moisture content.

Store paper flat in its

Stored improperly

moisture-proof wrapping.

Too heavy Use lighter paper.

Too moist, wrong grain direction or short-grain

Use long-grain paper.

construction

Minimum size (custom)

3 x 5 in (76 x 127 mm)

16 to 43 lb (60 to 165

g/m

bond) for the

tray with single page

Maximum size (custom)

Transparency

Labels

Cards

Envelopes

8.5 x 14 in (216 x 356 mm)

Same minimum and maximum paper sizes as listed above.

feeding and the manual tray

138 to 146 g/m

120 to 150 g/m

90 to 163 g/m

75 to 90 g/m

*. 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.

OTE

: 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.

1 sheet of paper for the tray or manual tray

Jamming, damage to machine

Cutouts or perforations

Do not use paper with cutouts or perforations.

Problems with feeding Ragged edges Use good quality paper.

OTES

• 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

Grain Long grain

Moisture content 4 % ~ 6 % by weight

Smoothness 100 ~ 400 Sheffield

emissions when heated to 200 °C (392 °F) for 0.1 second.

Paper Output Capacity

Output Location Capacity

Face-down output tray

50 sheets of 20 lb (75 g/m

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.

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/m

• 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. (76 x 127 mm)

OTES

• 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.

bond

) or jamming may occur.

8.5 x 14 in. (216 x 356 mm)

10.5

Specifications

+ 45 hidden pages