Vhia (Vhi) Level; Vdcdca (Vlow) Level - Nokia RM-596 Service Manual

RM-596
Cellular RF troubleshooting
The GSM or WCDMA transmitter (or receiver) has to be activated before the Vref supply voltage can be
measured. Follow the instructions given in chapter 'Manual transmitter (TX) testing with Phoenix → GSM
transmitter activation' or 'WCDMA transmitter activation'.

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'.

VDCDCA (Vlow) level

Check the VDCDCA level (1.5 V) at C7528.
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