Nokia RM-243 Service Manual

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 LNA
amplifier
VBAT3
VDRAM AVILMA ON ON 1.82 SDRAM VBAT2
VAUX AVILMA OFF OFF 2.78 Display VBAT5
VANA AVILMA ON ON 2.5 AVILMA VBAT4
VR1 AVILMA OFF ON 2.5 Crystal
oscillators
DC/DC
converter
in RF
VBAT4
VRFC AVILMA ON OFF 1.8 RAPIDO
converters
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
VCORE Barracuda ON ON 1.35/1.05
on sleep
RAPIDO
digital
core
VOUT BETTY OFF OFF 2.5 Audio
switch
VANA_CAM External
LDO
2.8 Camera
VDIG_CAM External
SMPS
1.8 Camera
LEDOUT BETTY LED
driver
14 Display
and key
LEDs
VSD SD
levelshifter
2.85 MicroSD
card
VDDI External
LDO
ON ON 1.8 Display
RM-243
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –7
Copyright © 2007 Nokia. All rights reserved.

Nokia RM-243 Specifications

General

Brand	Nokia
Model	RM-243
Category	Handhelds
Language	English