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Troubleshooting the Printing System 7-11
Engine Test
The printer has one test pattern (vertical lines). When an image
defect appears, a test print can be made to identify the problem. The
test print can be made by pressing the test print switch located on the
left side of the printer (see Figure 7-2 on page 7-12). A test pattern
can be printed by pressing the test print switch once after the
Photosensitive Drum has stopped and the printer has entered the
standby mode. If the switch is held down, the test pattern is printed
continuously. The switch can be used when paper is loaded in any
tray other than Tray 1.
The Engine Test does the following:
●
Verifies that the Print Engine is functioning correctly (the
Formatter PCA is completely bypassed during an Engine Test)
●
Is used for isolating printer problems
●
Is used for checking and adjusting registration
●
Prints from Tray 2, 3, or 4 only, not from Tray 1
●
Can be activated with the Formatter PCA removed
Note For the printer to perform an Engine Test, Tray 2, 3, or 4 must be
installed and loaded with paper, and the Toner Cartridge must be
installed in the printer.
Location of Engine Test Button
The Engine Test button is located on the left side of the printer, below
the Fan vent, as shown in Figure 7-2 on page 7-12.