LG KG920 - Page 80

4. TROUBLE SHOOTING
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ANT SW VC_EGSM VC_CDSPCS
DCS TX 0 1
EGSM TX 1 0
EGSM, DCS RX 0 0
Table 4-2
Figure 4-11.
CHECKING FLOW
Check SW500.ANT, RF with RF
Cable connected.
Open
Yes
Changing SW500
Check SW500.ANT,RF
with RF Cable disconnected
Short
Yes
Changing SW500
No
No
Check C522,C528
Check whether Ant SW
Set as TX mode
Refer to Graph 5
Refer to Table 4-3
Yes
Check VC_EGSM,
VC_DCSPCS
Check RF Level of
FL500 Pin 9(for GSM) & Pin 3 (for DCS)
Pin9 : ~29.5dBm
Pin 3 : ~26.5dBm
No
Yes
No
Changing board
Go to 4.3.5 Checking PAM
control signal
END
For the test,
TX Stand alone Mode is needed. Refer to
chapter 11 (PL=7 for GSM, PL=2 for DCS)