RF supply self test troubleshooting
Troubleshooting flow
VXO level
Check the VXO level (2.5V) at C2222. The signal is always on when the phone is in local mode.
VIO level
Check the VIO level (1.8V) at C2814. The signal is always on when the phone is in local mode.
VREF level
Check the Vref level (1.2 V) at C7529.
RM-781
Cellular RF troubleshooting
Page 4 – 12 COMPANY CONFIDENTIAL Issue 1
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