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4.1.4 Checking Rx VCO Signal
Test Point
U104.16 (CP_RX)
Checking Flow
Check U104 Pin 18
Check if there is
Any Major Difference
◆ Refer to Graph 4-2
Check U104 Pin 16
Check if the voltage is
around 1.5V
Figure 4-4
Rx TEST SETUP(HHP)
- Test Channel : 384(DCN),600(PCS)
Spectrum Analyzer Setting
Oscilloscope Setting
UHF_LO OK?
No
CP_RX OK?
Yes
Replace U104
U104.18 (UHF_LO_OUT)
Rx VCO is Ok
Yes
See next Page
to check Control Signal
No
Check U103
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