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Flow Chart of Troubleshooting
10-
10
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10-1-5. Speaker Part
There is no sound from the Speaker
The terminal of Speaker is
O.K
No
Replace the Speaker
Yes
There is any signal @ the
C401,C402
Yes
No
Check LCD or Replace HEA1
The type of sound
from the Speaker is
Melody
There is any signal
@ C403, C404
There is any signal
@ R302,R307
Yes
No
3
The pin#4 of
U301 is "High"
Check the
UCD302, U303
Check the
UCD102
Yes
Yes
No
No
Check the UCP201
Check the U303
Yes
No
END
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