Lexmark M1140, Service Manual

Page: 123 / 303

Hardware Tests
If the hardware test fails, replace the failing part.
Panel Test
This test verifies the control panel display function.
To run the Panel test:
1
From the Diagnostics menu, navigate to:
Hardware Tests > Panel Test
2
Press X to exit the test.
Button Test
This test verifies the control panel button function except for the Sleep button.
1
From the Diagnostics menu, navigate to:
Hardware Tests > Button Test
2
The panel displays
Press
and an icon matching one of the control panel buttons. Press the physical button that is
represented by the icon, and the printer tests the function of that button.
If the test is successful, then the panel displays another icon to test.
If a button fails the test, or if a different button is pressed, then the panel displays
Test Failed
and returns to
the main section of the Hardware tests menu. After three seconds of inactivity, the panel automatically returns to
the main section of the Hardware tests menu.
If all buttons pass the test, then the panel displays
PASSED
and returns to the main section of the Hardware tests
menu.
3
Press X 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 the
DRAM to verify that each bit in the memory can be set and read correctly.
To run the DRAM test:
1
From the Diagnostics menu, navigate to:
Hardware Tests > DRAM Test
2
Testing…
appears, followed by
Resetting the Printer
.
3
After the printer resets, the results of the test appear:
DRAM Test [x] 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.
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