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2-3
STH-N271
Trouble Shooting
N
Need to check Dome
S/W & U103
N
Need to check MIC101
& neighbor part
1-3. Abnormal Key, Mic, LED’S operation
Press Keys
Y
Y
Key Dispaly
OK?
Y
Key Display Good
Send Command Main Audio Path ON
(Test mode:031, 131, 136, 187)
Talking Voice at MIC+
N
Need to check
D210, D211, Q204, Q206
Y
Y
Y
LED Operation
OK?
Key Display Good
Mic Path Good
Send Command ALT_LED_ON
Send Command SVC_LED_ON
Send Command LED_ON
(Test mode:178)
Audio signal output
at Speaker?
GOOD