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Service Manual Online Homepage: http://manual.kmip.net/ Email: [email protected] ICQ: 343183001 QQ: 35070846
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2. SCH-X359 Trouble Shooting
2-
1
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1. Logic Section
1-1. No Power
Press PWR button
No
Yes
END
Check Battery, Q503 and its neighboring
circuits
U300 Pin
2=2.8V?
No
Yes
Check U300 and its neighboring circuits
U300 Pin
1=2.8V?
No
Yes
Check U300 and its neighboring circuits
R346
=2.8V?
No
Yes
Check U300, U301, U302 and its
neighboring circuits
"H" level
outputted from
Q307 Pin1?
Service Manual Online Homepage: http://manual.kmip.net/ Email: [email protected] ICQ: 343183001 QQ: 35070846