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Several sheets feed into the printer at one time and jam (the FEED JAM or PAPER JAM message appears on the display).

You may not be fanning and tapping the stack of paper sufficiently. Remove the jammed paper following the instructions earlier in this chapter. Before reloading paper, be sure to tap the paper and even up the edges of the stack. Also, do not load paper that is creased or folded.

You may not be using the correct paper for your printer. Make sure your paper matches the specifications listed in Chapter 8. If the finish of the paper is too smooth or too rough, paper feeding may be difficult. Try feeding each sheet manually.

The thickness of the paper also affects paper feeding. Always test your paper before purchasing it in large quantities.

Using an optional interface, the printer does not operate as expected.The printout is garbled or the printer does not print.

Your computer may not be properly connected to the printer. Perform the section on Testing the computer-to-printer connection in Chapter 2. If the test shows an improper connection, go on to the next three troubleshooting items below. If the test shows a proper connection, skip to the last item in this problem category.

The interface may not be configured correctly. If you are using a serial interface, make sure that both the computer and printer are set to use the same number of data bits per word and that they both use the same parity, baud rate, and number of stop bits. See your computer manual for the correct settings.

You may also need to change the DIP switch settings of your interface board. Before changing these settings, however, make sure the printer is turned off.

Troubleshooting 7-35