Troubleshooting
67
6
Other problems 6
For Macintosh
®
 with USB 6
Improving the print quality 6
If you have a print quality problem, print a test page first (see  page 40). If the printout looks good, the problem 
is probably not the printer. Check the interface cable or try the printer on another PC.
This section provides information on the following topics:
Problem Recommendation
The printer cannot print. There 
was an error writing to LPT1: 
(or BRUSB) for the printer 
error message occurs on your 
PC.
 Check that the printer cable is not damaged or broken. 
 If you have an interface-switching device, make sure the correct printer is 
selected.
Problem Recommendation
The printer does not appear in 
Chooser (Mac OS
®
 9.1 to 9.2) 
or Print Center (Mac OS
®
 X 
10.2.4 or greater).
 Check that the printer is turned on.
 Check that the USB interface cable is connected correctly.
 Check the printer driver is installed correctly.
Unable to print from application 
software.
 Make sure that the supplied Macintosh
®
 printer driver is installed in the Hard Disk 
and that it is selected with Chooser (Mac OS
®
 9.1 to 9.2) or Print Center (Mac 
OS
®
 X 10.2.4 or greater).
Examples of poor print 
quality
Recommendation
 
Faint
 Check the printer’s environment. Conditions such as humidity, high 
temperatures, and so on may cause this print fault. See Positioning the printer 
on page 3.
 If the whole page is too light, Toner Save mode may be on. Turn off Toner Save 
mode in the printer Properties tab of the driver.
 Try installing a new toner cartridge. See Replacing the toner cartridge 
on page 44.
 Try installing a new drum unit. See Replacing the drum unit on page 49.
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