VBAT level
Check the VBAT level at the L7504. The level should be the same as the battery voltage and always on.
VIO level
Check the VIO level (1.8V) at C2806. The signal is always on when the phone is in local mode.
RM-626
Cellular RF troubleshooting
Issue 1
COMPANY CONFIDENTIAL
Page 4 – 13
Copyright © 2011 Nokia. All rights reserved.