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Level 3 Repair
8-16
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8-3-5. Microphone Part
Check the voltage at TA402
= 2.1V
Check component soldering
statuses of C814, C815,
L400,L401
Resolder or replace U401
Resolder or replace C814, C815, L400, L401
END
No
Yes
Yes
Yes
Yes
No
Check the connection of
HDC600
Check main microphone function
in voice call receiver mode
Touch-key Module breakdown?
Reconnect HDC600
No
Change Touck-key Module
No