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4. TROUBLE SHOOTING
Checking Flow
Check C540,C541
Check whether Ant SW
Set as TX mode
Refer to Graph 5
Refer to Table 4-3
Check RF Level of
FL500 Pin 9(for GSM) & Pin 3 (for DCS)
Check SW500.ANT, RF with RF
Cable connected.
Check SW500.ANT,RF
with RF Cable disconnected
For the test,
TX Stand alone Mode is needed. Refer to
chapter 11 (PL=7 for GSM, PL=2 for DCS)
Check VC_EGSM,
VC_DCSPCS
Yes
Pin9 : ~29.5dBm
Pin 3 : ~26.5dBm
Yes
Open
Yes
Short
Yes
END
ANT SW
VC_EGSM
DCS_TX
0
EGSM TX
1
EGSM, DCS RX
0
Table 4-3
- 48 -
No
Changing board
No
Go to 4.3.5 Checking PAM
control signal
No
Changing SW500
No
Changing SW500
VC_CDSPCS
1
0
0
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