Samsung SCX 4321 User Manual

Maintenance
8.7
Replacing the ADF Rubber Pad
You can purchase an ADF rubber pad from your Samsung 
dealer or the retailer where you bought your machine.
1Open the ADF cover.
2Remove the ADF rubber pad from the ADF, as shown.
3Insert a new ADF rubber pad into place.
4Close the ADF cover.
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Troubleshooting
9.1
9Troubleshooting
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...

Troubleshooting
9.2
Exit Misfeed
1Remove any remaining page(s) from the ADF.
2Open the ADF cover.
3Remove 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.
To avoid tearing the paper, pull out the jammed paper gently 
and slowly. Follow the instructions in the following sections to...

Troubleshooting
9.3
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.
3If necessary, pull the manual tray out.
4Remove the jammed paper by gently pulling it straight 
out.
5If necessary, push the manual tray back into the machine.
6Reinstall the toner cartridge and close the front door. 
Printing automatically resumes.
In the Paper Exit Area
1Open and...

Troubleshooting
9.4
3If 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.
4Remove the jammed paper by gently pulling it straight 
out.
CAUTION: Inside of the machine is hot. Take care when 
removing paper from the machine.
5Close the rear cover.
6Open and close the front door to resume printing.
Tips for Avoiding Paper Jams
By selecting the correct paper types, most paper jams can be...

Troubleshooting
9.5
Low Heat Error There is a problem in 
the fuser unit.Unplug the power cord and 
plug it back in. If the problem 
persists, please call for 
service. Open Heat Error
[Over Heat]
Group Not
Available
(only for SCX-
4521F/ SCX-
4521FR)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.Use a speed dial number or 
dial a number manually using 
the number keypad.
[Incompatible]
(only...

Troubleshooting
9.6
Remove Documents
from ADFThe Favorite Copy 
button is set to Clone, 
Autofit, ID Card Copy 
or Poster and you 
press the button.The Clone, Autofit, ID Card 
Copy or Poster feature does 
not work with ADF. Remove 
the documents in the ADF.
[Retry Redial?]
(only for SCX-
4521F/ SCX-
4521FR)The machine is 
waiting for a specified 
time interval to redial 
a previously busy 
station.You can press 
Enter to 
immediately redial, or 
Stop/
Clear
 to cancel the redial 
operation.
Scanner...

Troubleshooting
9.7
Printing Problems
ConditionPossible causeSuggested solutions
The machine 
does not 
print.The machine is not 
receiving power.Check the power cord 
connections. Check the power 
switch and the power source.
The machine is not 
selected as the default 
printer.Select 
your printer as your 
default printer in your Windows.
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.After locating...

Troubleshooting
9.8
Pages print, 
but are blank.The toner cartridge is 
defective or out of 
toner.Redistribute the toner, if 
necessary. See ?$paratext>? on 
page 8.5.
If necessary, replace the toner 
cartridge.
The file may have 
blank pages.Check the file to ensure that it 
does not contain blank pages.
Some parts, such as 
the controller or the 
board, may be 
defective.Contact a service representative.
An error 
occurs 
repeatedly 
when you are 
printing with 
the USB 
connection.When the USB mode...

Troubleshooting
9.9
Vertical linesIf 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 ?$paratext>? on page 8.5.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine may be 
dirty. Clean the LSU (?$paratext>? on page 8.2). 
Contact a service representative.
Gray 
backgroundIf the amount of background shading becomes 
unacceptable:
• Change to a...