General power checking
Check the following voltages:
Signal
Rename
Regulator Sleep Idle Nominal
voltage
Main user Notes
VIO Pearl/Gazoo ON ON 1.8 Memory, I/Os,
display, main
and 2nd
camera,
BTHFMTXRDS3.
0
VBACK Pearl/Gazoo ON ON 2.5 Back-up
battery
VSIM Pearl/Gazoo ON ON 1.8/3.0 SIM card
VAUX1 Pearl/Gazoo ON ON 2.8 Main and 2nd
camera, display
and hall sensor
VANA Pearl/Gazoo ON ON 2.5 Audio
VR1 Pearl/Gazoo OFF ON 2.5 Crystal
oscillators
VRFC Pearl/Gazoo OFF ON 1.8 RAP3Gv4
converters
VRCP1 Pearl/Gazoo 4.75 To RF parts
VREF Pearl/Gazoo ON ON 1.25 RF reference
VCORE Pearl/Gazoo ON ON 1.2 RAP3Gv4
digital
Can change due
to RAP3Gv4
version & SW
VOUT Pearl/Gazoo OFF OFF 2.5 Video switch
VCAM_2V8 N1421 OFF OFF 2.8 Camera Disabled in
sleep
VCAM_1V8 N1420 OFF OFF 1.800 Camera Disabled in
sleep
VMEM Pearl/Gazoo OFF OFF 2.9 microSD Disabled in
sleep
RM-509; RM-510; RM-511
BB Troubleshooting and Manual Tuning Guide
Page 3 –12 COMPANY CONFIDENTIAL Issue 2
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