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SGH-Z320i Flow Chart of Troubleshooting and Circuit Diagrams
2-
4
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2-1-2. System Initial
Check the clock signal's
at R507
Check the Sleep X-tal signal's
at C513 ?
Check the clock generation
circuit (related to U501 and
TCX800)
Check the U501
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
Check the Audio part
Check the LCD part
Check the OSC500
END
Sound operation OK ?
LCD Display OK ?
Initial Failure
The pin #9 of U501
" Low --> High" ?