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Flow Chart of Troubleshooting
7-3. Audio Working
Speaker Working
Operate Speaker
NG
4,6,16,18pin
in U201(Sub)
Signal ON?
NO
1,13pin in
U201(Sub)
= High
9,13pin in U502
Signal ON?
NO
10pin in U502
= Low
NO
Check UCD501
& Neighboring Circuits
YES
NO
YES
YES
NO
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Change SPK
Check R201(Sub),
LCD Sub B'd &
Slide FPCB
35,36pin in
UCD501
Signal ON?
7-12
YES
Change U502
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