HP Color LaserJet 2550 HP Color LaserJet 2550 series - User Guide - Page 95

Problems with Mac OS X, continued, Cause, Solution, Software troubleshooting

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Problems with Mac OS 9.x. (continued) When connected with a USB cable, the printer does not appear in the Desktop Printer Utility or the Apple System Profiler after the driver is selected. Cause Solution This problem is caused by either a software or hardware component. Software troubleshooting ● Check that your Macintosh supports USB. ● Verify that your Macintosh operating system is Mac OS 9.1 or later. ● Ensure that your Macintosh has the appropriate USB software from Apple. Note The iMac and Blue G3 desktop Macintosh systems meet all of the requirements to connect to a USB device. Hardware troubleshooting ● Check that the printer is turned on. ● Verify that the USB cable is properly connected. ● Check that you are using the appropriate high-speed USB cable. ● Ensure that you do not have too many USB devices drawing power from the chain. Disconnect all of the devices from the chain and connect the cable directly to the USB port on the host computer. ● Check to see if more than two nonpowered USB hubs are connected in a row on the chain. Disconnect all devices from the chain and connect the cable directly to the USB port on the host computer. Note The iMac keyboard is a nonpowered USB hub. Problems with Mac OS X The printer driver is not listed in Print Center Cause The printer software might not have been installed or was installed incorrectly. The Postscript Printer Description (PPD) file is corrupt. Solution Make sure that the HP color LaserJet 2550 PPD is in the following hard drive folder: Library/Printers/PPDs/ Contents/Resources/.lproj, where "" represents the two-letter language code for the language you are using. If necessary, reinstall the software. See the getting started guide for instructions. Delete the PPD file from the following hard drive folder: Library/Printers/PPDs/Contents/Resources/ .lproj, where "" represents the two-letter language code for the language you are using. Reinstall the software. See the getting started guide for instructions. ENWW Solving common Macintosh problems 85

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When connected with a USB cable, the printer does not appear in the Desktop Printer Utility or the Apple System
Profiler after the driver is selected.
Cause
Solution
This problem is caused by either a software or hardware
component.
Software troubleshooting
●
Check that your Macintosh supports USB.
●
Verify that your Macintosh operating system is Mac OS
9.1 or later.
●
Ensure that your Macintosh has the appropriate USB
software from Apple.
Note
The iMac and Blue G3 desktop Macintosh systems meet all
of the requirements to connect to a USB device.
Hardware troubleshooting
●
Check that the printer is turned on.
●
Verify that the USB cable is properly connected.
●
Check that you are using the appropriate high-speed
USB cable.
●
Ensure that you do not have too many USB devices
drawing power from the chain. Disconnect all of the
devices from the chain and connect the cable directly to
the USB port on the host computer.
●
Check to see if more than two nonpowered USB hubs
are connected in a row on the chain. Disconnect all
devices from the chain and connect the cable directly to
the USB port on the host computer.
Note
The iMac keyboard is a nonpowered USB hub.
Problems with Mac OS X
The printer driver is not listed in Print Center
Cause
Solution
The printer software might not have been installed or was
installed incorrectly.
Make sure that the HP color LaserJet 2550 PPD is in the
following hard drive folder:
Library/Printers/PPDs/
Contents/Resources/<lang>.lproj
, where “<lang>”
represents the two-letter language code for the language
you are using. If necessary, reinstall the software. See the
getting started guide for instructions.
The Postscript Printer Description (PPD) file is corrupt.
Delete the PPD file from the following hard drive folder:
Library/Printers/PPDs/Contents/Resources/
<lang>.lproj
, where “<lang>” represents the two-letter
language code for the language you are using. Reinstall the
software. See the getting started guide for instructions.
Problems with Mac OS 9.
x
. (continued)
ENWW
Solving common Macintosh problems
85