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Checking Flow
SETTING : Attach the headset and "Listen to Radio" at Radio menu
Start
Check the Freq. at
pin4 of U102.
Freq.= 32.768kHz?
(Shown Graph 1)
Yes
Audio signal
appear at
R366, R367?
Yes
Audio signal
appear at pin1
and pin8 of
U104?
Yes
Refer to Earphone Trouble part.
X101 is working?
No
Check the pin1 of
X101.
Freq.= 32.768kHz?
Yes
Check the condition of U102
and external component.
Check the FM Receiver circuit,
No
input voltage, soldering.
If problem, replace the defected
component.
No
Check the FM AMP circuit.
If problem, replace the defected
component.
Graph 1. FM Radio Clock
No
Replace X101
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