LG KG200 Service Manual - Page 45
T/R Switch U601
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4. Troubleshooting T/R Switch (U601) Test point part Function U601, pin1 D_RX U601, pin2 VC3 U601, pin3 P_RX U601, pin4 VC2 U601, pin5 D_TX U601, pin7 G_TX U601, pin9 ANT U601, pin10 VC1 U601, pin11 G_RX Typical value 2.8V 2.8V 2.8V Description DCS RX PCS RX control signal PCS RX DCS, PCS TX control signal DCS PCS TX GSM TX Antenna port EGSM TX control signal GSM RX - 46 -
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4. Troubleshooting
- 46 -
T/R Switch (U601)
Test point part
Function
Typical value
Description
U601, pin1
D_RX
DCS RX
U601, pin2
VC3
2.8V
PCS RX control signal
U601, pin3
P_RX
PCS RX
U601, pin4
VC2
2.8V
DCS, PCS TX control signal
U601, pin5
D_TX
DCS PCS TX
U601, pin7
G_TX
GSM TX
U601, pin9
ANT
Antenna port
U601, pin10
VC1
2.8V
EGSM TX control signal
U601, pin11
G_RX
GSM RX