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Audio Troubleshooting; Remote Control Troubleshooting - Acer PD721 Service Manual

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Audio Troubleshooting

Can hear
sound?
Sound is clear
without noise?

Remote Control Troubleshooting

31
Start
No
Yes
No
Yes
End
Start
Replace the battery
Change Remote
Controller
Change IR Board
Change Main Board
Change
Main Board
Change
Speaker
Yes
No
Yes
No
Yes
No
Yes
Change
No
Spearker
Change
No
M/B
End
Chapter 4

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