Sharp ML-4550 ユーザーズマニュアル

9.13   

<Troubleshooting>

Character voids are white areas within 
characters that should be solid black:
• If you are using transparencies, try another 

type of transparency. Because of the 
composition of the transparency, some 
character voids may be normal. 

• You may be printing on the wrong surface on 

the paper. Remove the paper and turn it 
around. 

• The paper may not meet paper specifications. 

See page 5.3.

If horizontally aligned black streaks or smears 
appear:
• The toner cartridge may be installed 

improperly. Remove the cartridge and 
reinsert.

• The toner cartridge may be defective. Install a 

new toner cartridge. See page 8.5.

• If the problem persists, the printer may require 

repair. Contact a service representative.

If the printed paper is curled or paper does not 
feed into the printer:
• Turn over the stack of paper in the tray. Also 

try rotating the paper 180° in the tray.

• Try printing to rear cover (face up).

An unknown 
image repetitively 
appears on a 
next few sheets 
or loose toner, 
light print or 
contamination 
occurs.

Your printer is probably being used at an altitude 
of 2,500 m (8,200 ft) or above.
The high altitude may affect the print quality 
such as loose toner or light imaging. You can set 
this option through Printer Settings Utility or 
Printer Tab in printer driver’s properties. Refer 
to the Software Section for details.

“File in Use” 
message appears 
during installation.

Exit all software applications. Remove all 
software from the StartUp Group, then restart 
Windows. Reinstall the printer driver.

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The following situations are PostScript language specific and may occur 
when several printer languages are being used.

“Error Writing to 
LPTx” message 
appears.

• Ensure that the cables are connected 

correctly, the printer is on.

• If bi-directional communication is not turned 

on in the driver, it will also cause this 
message.

“General Protection 
Fault”, “Exception 
OE”, “Spool32”, or 
“Illegal Operation” 
messages appear.

Close all other applications, reboot Windows, 
and try printing again.

“Fail To Print,” “A 
printer timeout error 
occurred,” 
messages appear.

These messages may appear during printing. 
Just keep waiting until the printer finishes 
printing. If the message appears in standby 
mode or after printing has been completed, 
check the connection and/or whether an error 
has occurred.

• Refer to Microsoft Windows 98/Me/NT 4.0/2000/XP/2003 

User’s Guide that came with your PC for further information on 
Windows error messages.

• To receive a printed or screen displayed message when 

PostScript errors occur, open the Print Options window and 
click the desired selection next to the PostScript errors section.

PostScript file 
can not be 
printed.

The PostScript 
driver may not 
be installed 
correctly.

• Print a configuration page 

and verify that the PostScript 
version is available for 
printing.

• Install the PostScript driver; 

to installing the PS printer 
driver, see the Software 
Section.

• If problem consists, contact a 

service representative.

“Limit Check 
Error” message 
appears.

The print job 
was too 
complex.

You might need to reduce the 
complexity of the page or install 
more memory.