LG U8110 Service Manual page 178

4. TROUBLE SHOOTING
C. GSM RF Level Check
Z1100
Z1110
Figure 4-49. GSM/DCS Rx Path
v Agilent 8960 Setting
CW Mode
GSM : -50dBm@Ch65(948MHz)
DCS : -50dBm@Ch700(1842.8MHz)
Check GSM/DCS Rx
No
signal level at . GSM:-51.5dBm
Change Ant. SW module (N1000)
DCS:-51.5dBm
Yes
GSM Rx path OK.
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