LG GD580 Service Manual page 160

B. GSM Tx Output Level Check
Figure 4-19-5. EGSM/DCS/PCS Tx Level at ①
Test Program Script
1. EGSM Tx
MODE=0
SWTX=49,5,1024,1
Check EGSM/DCS/PCS output power at ①.
Check if there is any Major difference.
Refer to Figure 4-19-5.
EGSM>32dBm
DCS>29dBm
PCS>29dBm
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Only for training and service purposes
2. DCS Tx
MODE=2
SWTX=699,0,1024,1
v Agilent 8960 Setting
: GSM BCH+TCH Mode
v Oscilloscope Setting
Similar?
Yes
EGSM/DCS/PCS Tx path OK.
See Chapter 4.19 to check Rx path
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4. Trouble Shooting
3. PCS Tx
MODE=1
SWTX=661,0,1024,1
See Next page
No
to check Tx
path
LGE Internal Use Only