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Flow Chart of Troubleshooting
9-8
9-1-5. Speaker Part
Check the connection status
of LCD connector HEA101
There is no sound from speaker
Are there any signal at the
speaker pad on LCD PCB?
reconnect HEA101
Replace the speaker module
END
No
Yes
No
No
Yes
Check R323, R322 of U303.
Voltage is
≥
1V?
1
Yes
Check UCP301
2
1
2