User Guide

General power checking
Check the following voltages:
Signal
name
Regulator Sleep Idle Nominal
voltage
Main user Notes Supply
VIO AVILMA ON ON 1.82 Memory,
I/Os
VBAT1
VBACK AVILMA ON ON 2.5 Back-up
battery
VSIM1 AVILMA ON ON 1.8/3.0 Sim card VBAT3
VSIM2 AVILMA ON ON Digital
micropho
ne
VBAT3
VDRAM AVILMA ON ON 1.82 SDRAM VBAT2
VAUX AVILMA OFF OFF 2.78 FM radio,
IrDA, MR
sensor,
display
VBAT5
VANA AVILMA ON ON 2.5 Avilma VBAT4
VR1 AVILMA OFF ON 2.5 Crystal VBAT4
oscillator
s
VRFC AVILMA ON OFF 1.8 RAPIDO
converter
s
VRCP1 AVILMA 4.75 To RF
parts
RF active VBATCP
VRCP2 AVILMA 4.75 To RF
parts
RF active VBATCP
VREF AVILMA ON ON 1.35 RF
reference
VBAT6
VCORE Barracud
a
ON ON 1.35/!.05
on sleep)
Rapido
digital
core
VOUT BETTY OFF OFF 2.5 Audio
switch,
ALS
VAUX External
LDO
2.8 Camera
VDIG_CAM External
SMPS
1.8 Camera
and
STV984
RM-244
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –7
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