Flow Chart Of Troubleshooting - Samsung SGH-i560V Service Manual

9. Flow Chart of TroubleShooting

9-1. Logic Section
9-1-1 : No Power
Press PWR KEY
Check pin #1 and #2
NO
U514 pin4
if One of them is low,
output high?
replace board
YES
Check TR502, TR503,
NO
TR502 pin1
and neighboring circuits
output higher 3.5V?
Replace board if required
YES
END
9-1
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