Table of Contents
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2-1-2. System Initial
Initial Failure
The pin #9 of U500
" Low --> High" ?
Check the Sleep X-tal
signal's at C523 ?
Check the clock signal's
LCD Display OK ?
Sound operation OK ?
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SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
YES
YES
at R510
YES
YES
YES
END
NO
NO
NO
NO
NO
2- 3
Check the U500
Check the OSC501
Check the clock
generation circuit
(related to U500 and
OSC801
Check the LCD part
Check the Audio part
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