LG S5000 Service Manual page 53

4. TROUBLE SHOOTING
Checking Flow
For these 2 test case,
No Call connection is needed
Check SW500 Pin ANT,RF
with RF Cable connected.
Check SW500 Pin ANT,RF
with No RF Cable Connected
Check C539,C540
Check whether Ant SW
Set as RX mode
RRefer to Table 4-2
Check RF Level of
FL500.10 (for GSM) &
FL500.1(for DCS)
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 11
GSM_TX
DCS_TX
RX
Open
Yes
Short
Yes
VC1 :Low
VC2 :Low
Yes
Pin10 : ~ -62dBm
Pin 1 : ~ -63dBm
Yes
Ant SW & Mobile SW is OK
See next Page to check
Rx IQ Signal
ANT_SW1 ANT_SW2
HIGH LOW
LOW HIGH
LOW LOW
Table 4-2
No
Changing SW500
No
Changing SW500
Changing the Board.
No
No
Changing FL500
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