Hardware Tests; Panel Test; Button Test - Lexmark X850e Service Manual

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Page
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1 General printer information includes:
2 Page is gray with two black squares
3 Page is solid black
4 Page is blank (this page verifies that the device does not streak or smear toner)

HARDWARE TESTS

Touch the following Hardware Tests from this menu:
•

Panel Test

•

Button Test

•
DRAM Test
•
CACHE Test
•
Parallel Wrap
Panel Test
This test automatically toggles all pixels on the LCD through every contrast level beginning with the darkest to
the brightest. This test shows non-functioning pixels as blank spaces during the darkest contrast.
This test continues until you press Stop
Button Test
The Button Test is used to verify the operation of each button on the operator panel.
To perform the Button Test:
1.
Touch HARDWARE TESTS from the Diagnostics Menu.
2.
Touch Button Test. The LCD displays a graphic of the operator panel buttons that matches the layout of
the operator panel buttons.
3.
Press any button on the operator panel and that button on the LCD appears shaded.
• A circular graphic with spokes emanating from a dark center
• Device Information
• (Envelope Enhance)
• Engine Setting 1 to 4
• Edge to Edge
• Current values of each variable listed
• A repeated string of characters in varying font sizes
, then the LCD returns to HARDWARE TESTS.
7500-XXX
3-7
Diagnostic aids