Lexmark C792de, Service Manual

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Service Manual
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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.
Once the maximum pass count or fail count is reached, or once all the DRAM has been tested, the test stops
and the final results appear.