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8-3-14. GSM850/WB5
NORMAL CONDITION
catch the channel?
Trouble occurs only in
GSM850/B5 band?
Check
C124,L116,C125,L114,L15
6,L117,L115,C127,C126,L
119 soldering condition
Check DUF100,U116,
U117 for any damage
(crack, open, etc)
Check U124 for any
damage (crack, open,
Change the board
END
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No
NO
Yes
Yes
No
Yes
No
Yes
etc)
No
Try 8-3-3 Repair procedure
CHECK soldered components
C124,L116,C125,L114,L156,L117,L115,
C127,C126,L119
Resolder or change
DUF100,U116,U117
Resolder or change
U124
8-34
Level 3 Repair
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