Acer PD721 Technical Information download pdf (Page 38)

31 Chapter 4

Audio Troubleshooting

Remote Control Troubleshooting

Can hear

sound?

Start

Sound is clear

without noise?

Yes

Yes

Change

Speaker

Change

Main Board

End

Change

Spearker

Change

M/B

No

No

No

No

Start

End

Replace the battery

No

Change Remote

Controller

Yes

No

Change IR Board

No

Change Main Board

Yes

Yes

Yes

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