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Flow Chart of Troubleshooting
10-3
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10-1-2. System Initial
①
Flow chart of System Initial
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
The pin #9 of U400
" Low --> High" ?
Check the Sleep X-
tal signal's
at C412
Check the clock
signal's
at R114
LCD Display OK ?
Sound operation OK
?
Initial Failure
Check the U400
END
Check the OSC400
Check the clock generation
circuit (related to U400 and
TCXO100)
Check the LCD part
Check the Audio part
Summary of Contents for SGH-L170
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