LG U8110 Service Manual page 171

4. TROUBLE SHOOTING
B. GSM Tx Output Level Check
Test Program Script
1. GSM Tx
MODE=0
SWTX=1,64,5,1024,1
Check GSM/DCS output power at
Check if there is any Major difference.
Refer to Figure 4-42.
GSM > 32dBm
DCS > 29dBm
Figure 4-42. GSM Tx Level at 1
v. Agilent 8960 setting
: GSM BCH+TCH m ode
v. Oscilloscope setting
.
Similar?
Yes
GSM/DCS Tx Path OK.
See chapter 4.8.6 to check Rx path
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1
2. DCS Tx
MODE=2
SWTX=1,699,0,1024,1
No
See next page to check Tx path