If you are unable to solve a problem using the solutions in this manual, press the [Power] button and then turn the main power switch to the ""position. Wait at least 10 seconds and then turn the main power switch to the ""position. After the main power indicator color changes from orange to green, press the [POWER] button.
When the background color of the job status display at the upper right corner of the touch panel is not gray, do not switch off the main power switch or unplug the power plug. This may damage the hard drive or cause the data being stored or received to be lost.
Point to check Solution
Is your computer or the machine in an unstable state? Cancel printing, restart your PC and the machine, and try printing again.
If there is only a small amount of free space remaining in the memory or hard drive of your PC, or if a large number of jobs have been spooled on the machine and only a small amount of free space remains, text may be printed as garbled characters.

To cancel printing
Windows: Double-click the printer icon that appears at the lower right of the task bar and click "Cancel All Documents" (or "Purge Print Documents") in the [Printer] menu.
Macintosh: Double-click the name of the machine in the printer list, select the job that you wish to delete, and delete it.
(In Mac OS 9.0 to 9.2.2, double-click the printer icon on the desktop, select the print job that you wish to delete, and delete it.)
At the machine: Tap the job status display on the operation panel, tap the [Print] tab to change the screen, tap the key of the print job that you wish to delete, and tap the [Stop/Delete] key. A message will appear to confirm the cancelation. Tap the [Cancel] key.
If some printed characters are still garbled after restarting, ask your administrator to lengthen the timeout setting of [I/O Timeout] in the setting mode.
"Setting mode" → [Printer Settings] → [Interface Settings] → [I/O Timeout]

If garbled characters are being still printed after the above measures are taken, remove and then reinstall the printer driver.