RF power supply self test troubleshooting
Troubleshooting flow
VDD-VAR level
Check the VDD-VRA level (1.8V) at output. If it is not, check C2523. If still have trouble, check L7502. If not at
L7502, then refer BB VSD-1.8V checking flow.
VDD-IO level
Check the VIO level (1.8V) at output. If it is not, check C7527. If still have trouble, check L7502. If not at L7502,
then refer BB VSD-1.8V checking flow.
RM-839; RM-840; RM-841
Cellular RF troubleshooting
Page 4 – 8 NOKIA INTERNAL USE ONLY Issue 1
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