3 Run test prints to confirm print quality, in both simplex and duplex modes and from upper and lower paper cassettes. When you enter test print mode by pressing the keys listed below, the following items print in the order listed: a directory of the boot device and multiple listings of fonts; a formatted and unformatted error log; a continuous flow of test prints.

1Power-on-reset the printer.

2Run test prints:

•For simplex printers, press:

STOP TEST

•For duplex printers, press:

STOP DUPLEX TEST

3Stop printing the pattern by pressing STOP. On pressing STOP, the printer will stop generating test prints. The printer will print all test prints stored in the printer’s buffer, then stop.

Are the test prints clean and printing correctly?

No: Go to Chapter 4, “Print Quality Samples” ; identify a sample with the problem you see in the test print; then turn to the TAG indicated.

Yes: Continue.

4 Clear the error log:

Caution

With this procedure you can either clear the error log or

format a disk. Pay careful attention to the options you select.

1Enter the diagnostic mode of the printer:

•Turn off the printer and wait 5 seconds.

•Hold down the STOP and TEST keys simultaneously as you turn the printer back on.

•The tone, followed by 001 on the display, indicates you are in the test mode. This takes about 1 minute.

2Press: CANCEL to advance the counter to 110.

3Press: START to activate the procedure. 0 appears on the display, indicating the A: drive.

4Press: CANCEL to advance to the drive where the error log is maintained. This is usually the boot drive.

Display

Indication

 

 

0

Diskette drive A:

 

 

1

Diskette drive B:

 

 

2

Hard drive C:

 

 

3-10

Troubleshooting Analysis Guide (TAGs)