General Power Checking - Nokia n81 Service Manual

RM-179; RM-223
Baseband Troubleshooting

General power checking

Check the following voltages:
Signal Regulator
name
VIO External
SMPS
N2201
VBACK AVILMA
VSIM1
VSIM2 AVILMA
VDRAM External
SMPS
N2201
VAUX AVILMA
VANA AVILMA
VR1 AVILMA
VRFC AVILMA
VRCP1 AVILMA
VRCP2 AVILMA
VREF AVILMA
VCORE External
SMPS
N2390
VOUT BETTY
VCAMANA External
LDO N2501
VCAMDIG External
SMPS
N2500
LEDOUT External
SMPS
N2301
VSD SD
levelshifter
VIO_VILMA AVILMA
Issue 1
Sleep Idle Nominal
voltage
ON ON 1.82
ON ON 2.6
ON ON
ON ON 1.82
OFF OFF 2.78
ON ON 2.5
OFF ON 2.5
ON OFF 1.8
4.75
4.75
ON ON 1.35
ON ON 1.35/1.05
on sleep
OFF OFF 2.5
2.8
1.8
< 18
2.9
ON ON 1.82
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Main user
Displays, I/Os
Back-up battery
SDRAM
FM radio, ALS, MR
sensor, displays
AVILMA
Crystal oscillators
RAPIDO converters
To RF parts RF active
RF reference
RAPIDO digital
core
Audio switch
Camera
Camera, STV984
Display backlight According
to
Regulator
spec
MicroSD card
Audio, BT
Notes Supply
VBAT3
VBAT5
VBAT4
VBAT4
VBATCP
VBATCP
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