Nokia 3105 Servicehandbuch

Nokia

RH-48

System Module

CCS Technical Documentation

Page 2

©

2003 Nokia Corporation Confidential

Issue 1 11/2003

Contents

Transceiver RH-48 ......................................................................................................... 3

Introduction ..................................................................................................................3
Operational Modes .......................................................................................................3
Baseband Module ........................................................................................................3

UEM .......................................................................................................................... 4

BB-RF Interface Connections ......................................................................................6

UPP............................................................................................................................ 9
NOR Flash Memory and SRAM ............................................................................. 10

User Interface Hardware ............................................................................................10

LCD ......................................................................................................................... 10
Keyboard ................................................................................................................. 10
Power Key ............................................................................................................... 10
Lights....................................................................................................................... 10
Vibra........................................................................................................................ 11

Audio Hardware .........................................................................................................11

Earpiece ................................................................................................................... 11
Microphone ............................................................................................................. 11
MIDI Speaker .......................................................................................................... 11
Audio Amplifier Interface ....................................................................................... 12

Battery ........................................................................................................................12

Phone Battery .......................................................................................................... 12
Battery Connector ................................................................................................... 13

Accessories Interface .................................................................................................13

System connector .................................................................................................... 13
Charger IF ............................................................................................................... 15

Test Interfaces ............................................................................................................16

Production Test Pattern ........................................................................................... 16

General Information about Testing ............................................................................18

Phone Operating Modes .......................................................................................... 18

RF Module .................................................................................................................19

Requirements........................................................................................................... 19
Antenna ................................................................................................................... 19
Transmitter .............................................................................................................. 19
Synthesizer .............................................................................................................. 20
Receiver................................................................................................................... 22