General power checking
Check the following voltages:
Signal name Regulator Sleep Idle Nominal
voltage
Main user Notes
VIO AVILMA ON ON 1.82 Memory, I/Os,
Display
VBACK AVILMA ON ON 2.5 Back-up
battery
VSIM1 AVILM ON ON 1.8/3.0 SIM card
VDRAM AVILMA ON ON 1.82 SDRAM
VAUX AVILMA OFF OFF 2.78 Camera,
Display
VR1 AVILMA OFF ON 2.5 Crystal
oscillators, RFIC
VRFC AVILMA OFF ON 1.8 RAP3G
converters
VRCP1 AVILMA 4.75 To RF parts RF active
VREF AVILMA ON ON 1.35 RF reference
VCORE BETTY ON ON 1.05
1.25
1.35
1.40
RAP3G digital
VOUT BETTY OFF OFF 2.5 Accessory
connected
VCAM_2V8 LP3987ITLX-2.
85/N3351
OFF OFF 2.850 Camera Disabled in
sleep
VCAM_1V8 LM3677TLX-1.
82/N3350
OFF OFF 1.800 Camera Disabled in
sleep
VSIM2_MMC KMBGN000A/
D4800
OFF OFF 2.850 Internal
memory
Disabled in
sleep
VLEDOUT TPS61061/
N2301
OFF OFF 14.5 LCD Backlight Disabled in
sleep
Charging troubleshooting
Troubleshooting flow
RM-352; RM-354
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –9
Copyright © 2008 Nokia. All rights reserved.
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