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Flow Chart of Troubleshooting
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9-11
9-6. Speaker Part(Melody)
U405 pin 7 = 2.9V?
Speaker does not work
Check the Clock signal at
Pin 1 of U101 (26MHz)
Check the clock generation circuit
(related to U101 and PAM100)
No
Yes
No
Resolder or replace U405
Yes
U405 pin 15,17 ≒ 1.8V?
(When U405 operate)
Resolder U405
No
Yes
No
END
Is Speaker working?
Change the Speaker
Yes
Yes
HEA600 pin 57,58 ≒
1.8V?
(When U405 operate)
Resolder HEA600
No
Yes
Содержание SGH-M610S
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