3-8 Service Manual
7510
HARDWARE TESTS
Touch the following Hardware Tests from this menu:
• Panel Test
• Button Test
• DRAM Test
• CACHE Test
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 , then the LCD returns to HARDWARE TESTS.
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.
4. Release the button and the shading is removed.
Touch Back to exit the test.
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