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1-3
STH-A225 Trouble Shooting
1-3. Abnormal Key, Mic, LED’S operation
N
Need to check CN102-1
& neighbor part
N
Need to check CN102-1,
Q102 & neighbor part
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
CN102-1 & neighbor part
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