
Troubleshooting
9.34
Common Macintosh Problems (WorkCentre PE120i Only)
Problems in the Chooser
Printing Errors
Problem Possible Cause and Solution
The printer driver 
icon does not appear 
in Chooser.
Software is not installed correctly.
• The LaserWriter driver should be present as part of the 
Macintosh OS. Make sure that the LaserWriter driver is in 
the 
Extensions
 folder within the 
Systems
 folder. If not, 
install the LaserWriter driver component from the 
Macintosh OS CD.
• Make sure that you are using a high-quality cable.
• Make sure that the machine is on the correct network. 
Select 
Network
 or 
AppleTalk Control Panel
 from 
Control Panels
 in the 
Apple
 menu and then choose the 
correct network.
The machine name 
does not appear in 
the 
Select a 
PostScript Printer
box in the Chooser.
• Make sure that the cables are connected correctly and the 
machine is turned on. 
• Check if “Ready” appears on the display of the control 
panel. If not, press the 
Stop/Clear
 button to switch your 
machine to on-line.
• Make sure that the correct printer driver has been selected 
in Chooser.
• If the machine resides on a network with multiple zones, 
make sure that the correct zone is selected in the 
AppleTalk Zones box in Chooser.
• Make sure that AppleTalk is on; the button next to 
Active
is selected in Chooser. You may need to restart the 
computer to activate the change.
Problem Possible Cause and Solution
You cannot use the 
computer while the 
machine is printing.
Background Printing has not been selected.
• For LaserWriter 8.3, turn 
Background Printing
 on in the 
Chooser. Status messages will now be redirected to the 
Print Monitor allowing you to continue working while  the 
computer is processing data to be sent to the machine.
• For LaserWriter 8.4 or higher, turn 
Background Printing
on at the Print window.