VHIA (Vhi) level
Check the VHIA level (2.6 V) at L7509.
The GSM or WCDMA transmitter (or receiver) has to be activated before the VPA supply voltage can be
measured. Follow the instructions given in chapter 'Manual transmitter (TX) testing with Phoenix
→
GSM
transmitter activation' or 'WCDMA transmitter activation'.
RM-609
Cellular RF troubleshooting
Issue 1
COMPANY CONFIDENTIAL
Page 4 – 17
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