Samsung NP900X4D, Service Manual

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4. Trouble shooting
Problems related to sound
1. There is no sound from the speaker.
(Insert the figure of the audio jacks so that the reader can check via the figure.)
1
Check if the sound is muted after booting up Windows.
2
Control panel confirmation.
→ Speaker Setting.
3
Check the connection status of the speaker cable and check if the speaker is
out of order.
4 Check if there is a magnetic object near the speaker.
5
Replace Speaker. * If there is still no function, change
main + sub board
2. There is no sound from the headphone/mic.
1
Check if the sound is muted after booting up Windows.
2 Control panel confirmation.
→ Speaker Setting.
3 Check main board around audio connector.
Check for any short circuit or soldering NG.
4 Change main board
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