Samsung photo smart 230 Service Manual page 78

E.3-12 USB ERROR
Check D/B USB Jack
(J7) is cold soldered
YES
Check D/B Y3:6MHZ
Output correect
YES
Check D/B U31,FB39
,R161 is cold soldered
or damaged
YES
Replace D/B
Replace or resolder J7
NO
Replace Y3
NO
Replace or resolder
NO
U31,FB39,R161
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