LG -MC2670 Service Manual page 20

LG-MC26 70
Checking Flow
Check U100 Pin 1
Check if there is
Any Major Difference
◆ Refer to Graph 4-4(a)
Check DP101 Pin 8
Check if there is
Any Major Difference
◆ Refer to Graph 4-4(b)
Check DP101 Pin 5
Check if there is
Any Major Difference
◆ Refer to Graph 4-4(c)
Waveform
U100 Pin 1
Rx TEST SETUP(HHP)
- Test Channel : 384(DCN)
E5515C Setup
- CH : 384(DCN)
- Sector Power : -30 dBm
Spectrum Analyzer Setting
Oscilloscope Setting
Yes
Detected Signal?
No
Yes
Detected Signal?
No
Yes
Detected Signal?
No
DCN Duplexer is Ok
See next Page to check
Rx I/Q data Signal
Graph 2.1.4(a)
17
Changing U100
Check C101
Changing DP101