Lexmark C792 series - Print Quality Pages; Hardware Tests; Panel Test; Button Test

3-14 Service Manual
5062
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Print Quality Pages
The print quality test consists of five pages. Pages one and two contain a mixture of graphics and text. The
remainder of the pages only contain graphics. See “Print tests” on appendix page A-1 for samples of the Print
Quality Pages.
This test may be printed from either Configuration menu or the Diagnostics menu. To run the print quality pages
from the Diagnostics menu, select PRINT TESTS and Print Quality Pages from the menu. Once the test is
started it cannot be canceled. After the test pages print, the printer returns to the PRINT TESTS menu.
HARDWARE TESTS
Note: If the test fails, replace the failing part.
Panel Test
This test verifies the operator panel display function.
To run the Panel Test:
1. From the Diagnostics menu, navigate to:
HARDWARE TESTS > LCD Test
The Panel test continually executes.
2. Press Stop (X) to cancel the test.
Button Test
This test verifies the operator panel button function.
To run the Button Test:
1. From the Diagnostics menu, navigate to:
HARDWARE TESTS > Button Test
2. With no buttons pressed, a pattern matching the operator panel buttons is displayed. Press each operator
panel button one at a time, and an “X” displays in the box that represents the button.
3. Press Stop (X) or touch Back to exit the test.
DRAM Test
This test checks the validity of DRAM, both standard and optional. The test repeatedly writes patterns of data to
DRAM to verify that each bit in memory can be set and read correctly.
To run the DRAM Test:
From the Diagnostics menu, navigate to:
HARDWARE TESTS > DRAM Test
DRAM Test Testing… appears on the screen, followed by Reseting the Printer.
After the printer resets, the results of the test appear: DRAM Test (x)MB P:###### F:######.
(x) represents the size of the installed DRAM.
P:###### represents the number of times the memory test has passed and finished successfully, with the
maximum pass count being 999,999.
F:##### represents the number of times the memory test has failed and finished with errors, with the maximum
fail count being 999,999.