
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RX Part Trouble Shooting(3)
1. Check Ant. SW and Mobile SW
➀
Check RF Power at each point(
➀
,
➁
,
➂
-1,
➂
-2).
➁
Can you observe good RF signal at proper frequency?
• GSM 190Ch. : 881.6MHz
• PCS 661Ch. : 1960MHz
• RF Power is almost same with input power set to equipment.
➂
If not, change FL503(Ant. SW)
Check these circuit with High Frequency Probe.
You can see RF signal at Spectrum Analyzer !
GSM Rx Path
PCS Rx Path
GSM/PCS Rx Path
-2
-1
FL503
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Summary of Contents for LG9200
Page 3: ... 4 Z 3 X B O X C O M ...
Page 107: ... 120 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 108: ... 121 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 109: ...8 PCB LAYOUT 122 Z 3 X B O X C O M ...
Page 110: ... 123 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 111: ... 124 Z 3 X B O X C O M ...
Page 116: ...9 Calibration 129 E Calibration Equipment Setup Z 3 X B O X C O M ...
Page 123: ... 136 Z 3 X B O X C O M ...
Page 142: ...Note Z 3 X B O X C O M ...