Samsung SCH-i830 Service Manual page 39
Cdma telephone
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Also See for SCH-i830:
- Phone manual (236 pages) ,
- User manual (224 pages) ,
- Service manual (103 pages)
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Mic Working
Operate MIC
NG
4pin in U507
Signal ON?
YES
5pin in U507
Signal ON?
YES
3pin in U501
Signal ON?
YES
Check UDC500
& Neighboring Circuits
NO
NO
NO
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Check D501 &
Change MIC
1pin in U507
NO
= Low?
YES
Change U507
YES
4pin in U501
= High?
NO
7-13
Flow Chart of Troubleshooting
Check U508 &
Neighboring Circuits
Change U501
- Quick Links:
- Block Diagram
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