Level 3 Repair
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8-42
Check
C120,L154,L106,C138,C1
39,L108 soldering
condition for any damage
Trouble occurs only in
GSM1800 band?
8-3-18. GSM1800 Rx
NORMAL CONDITION
catch the channel?
Check U106, U104 for
any damage (crack, open,
etc)
CHECK soldered components
C120,L154,L106,C138,C139,L108
Resolder or change
U106,U104
Change the board
END
No
Yes
No
Yes
No
No
Try 8-3-3 Repair procedure
NO
Yes
Check U124 for any
damage (crack, open,
etc)
Resolder or change
U124
Yes