Nokia 2220 Servicehandbuch

Nokia

CCS Technical Documentation

System Module

RH-42

Issue 2 09/2003

Nokia Corporation Confidential

Page 3

Contents

Page No

Abbreviations ................................................................................................................. 7
Transceiver RH-42 (2220) ............................................................................................. 9

Introduction ..................................................................................................................9

Operational Modes .................................................................................................. 10

Environmental Specifications ....................................................................................10

Normal and extreme voltages.................................................................................. 10
Temperature Conditions.......................................................................................... 10

Engine Module............................................................................................................. 11

Baseband Module ......................................................................................................11
UEM ..........................................................................................................................12

Introduction to UEM ............................................................................................... 12
Regulators................................................................................................................ 12
RF Interface............................................................................................................. 13
Charging Control..................................................................................................... 13
Digital Interface....................................................................................................... 13
Audio Codec............................................................................................................ 14
UI Drivers................................................................................................................ 14
AD Converters......................................................................................................... 14

UPP ............................................................................................................................14

Introduction ............................................................................................................. 14
Blocks...................................................................................................................... 14

Flash Memory ............................................................................................................15

Introduction ............................................................................................................. 15

User Interface Hardware .............................................................................................. 15

LCD ...........................................................................................................................15

Introduction ............................................................................................................. 15
Interface................................................................................................................... 15

Keyboard ....................................................................................................................15

Introduction ............................................................................................................. 15
Power Key ............................................................................................................... 16
Keys......................................................................................................................... 16

Lights .........................................................................................................................17

Introduction ............................................................................................................. 17
Interfaces ................................................................................................................. 17
Technical Information ............................................................................................. 17

Audio HW .................................................................................................................... 17

Earpiece .....................................................................................................................17

Introduction ............................................................................................................. 17

Microphone ................................................................................................................17

Introduction ............................................................................................................. 17

Buzzer ........................................................................................................................17

Introduction ............................................................................................................. 17

Battery.......................................................................................................................... 18

Phone Battery .............................................................................................................18

Introduction ............................................................................................................. 18
Interface................................................................................................................... 18

Battery Connector ......................................................................................................19