Introduction; Phone Description - Nokia 3555 Service Manual

RM-257; RM-270; RM-277
System Module

Introduction

Phone description

Note: All references to GPS concern RM-257 only.
RAP3GS is the main digital baseband ASIC in the phone. It contains functionality for both WCDMA and GSM
EDGE.
N2200 (AVILMA) is mainly the audio ASIC in the phone and N2300 (BETTY) is basically the energy management
controller for the phone.
Bluetooth is physically integrated in one single ASIC.
Key components
Function
Baseband ASIC
RF ASIC
Processor
PA GSM
PA WCDMA
Oscillators
Memories
Back-up battery
Bluetooth
Fold switch
Battery
Battery connector
BTB connector
RF connector
Issue 1
AVILMA
BETTY
Ahneus
RAP3GS
Front end module (FEM), quad band
VCTCXO
Balun GSM
Balum WCDMA
512 Mbit NOR + 256 Mbit SDRAM Combo (Stacked with RAP3GS)
RTC back-up battery 311
BTPerf 2.3 module
Hall IC switch/position sensor
BL-5C
Conn. battery 3POL SPR
Board-to-board connector
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Description Item ref
N2200
N2300
N7505
D2800
N7520
N7540
G7501
T7502
T7580
D2801
G2200
N6030
N2400
X2000
Main:
X3502,
Top:
X3602
X7800
Page 5 –5