Samsung SGH-I750 Service Manual page 58

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Flow Chart of Troubleshooting
7-6. T-Flash Card Working
Insert T-Flash Card &
Operate T-Flash Card
Check CN101(Sub)
it's neighboring circuits
NG
Break a
CN101(Sub)?
NO
2pin in
CN101(Sub)
= Low
YES
2pin in
U200(Sub)
YES
3pin in
U200(Sub)
= High
YES
& D104
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YES
Change CN101(Sub)
NO
Check
CN101(Sub)
Change Sub B'd
NO
or Slide FPCB
NO
Change U200(Sub)
7-24

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