Acer PD525 Service Manual page 53

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Have Line Bar?

Have Noise?

*Note : The procedure to enter service mode is..

Have Image?

Have Garbage Pattern?

Chapter 4

Adjust the frequency selection in OSD Menu.

Press the Menu button to check that have Line bar show on the OSD

Menu. (Check the DMD chip and DMD board. If the Line bar also

show on the OSD Menu)

Ensure that there is no dust on the DMD Contact housing module.

Re-assembly for DMD module.

Check the Main board.

Ensure the Signal cable and Source is work as well.

Adjust the Tracking selection in OSD Menu.

Press the Menu button to check that have the noise issue appear on

OSD Menu. (Check the DMD board if the noise also appear on the

OSD Menu.)

Press "Power", "Left", "Left", "Menu" button when the Unit under search

status.

Ensure the signal cable and source work as well.

Check that can OSD menu show on the screen.

(Check the main board if OSD menu cannot show on the screen)

Ensure the signal cable and source work as well.

Check that can OSD menu show on the screen.

(Check the main board if OSD cannot show on the screen)

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