LG G7100 Service Manual page 65

4.3.4 Checking Ant SW & Mobile SW
For these 2 test case,
No call Connection is
needed
For these 2 RF level
test cases, TX stand
alone mode is needed
Checking Flow
Check SW600 Pin 1,2 with
RF Cable connected
Check SW600 Pin 1,2 with
No RF Cable connected
Check C608.2,C607.2
Check whether Ant SW set
as TX mode
* Refer to Graph 4-5
Check RF Level of FL600
pin 5 (for GSM)
pin 3 (for DCS)
Check RF Level of FL600
pin8
Ant SW & Mobile SW is OK
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4. TROUBLE SHOOTING
No
Open
Yes
No
Short
Yes
No
Check DCSSEL &
GSMSEL
Yes
No
Pin 5 : ~ 33 dBm
Pin 3 : ~ 30 dBm
Yes
No
GSM : ~32 dBm
DCS: ~29 dBm
Yes
See Next page to check
PAM control signal
Changing SW600
Changing SW600
Changing the Board
Goto 4.3.7
to check other RF level
Changing FL600