User Guide

RH-53/54

Nokia Customer Care 8-System Module

4 COMPANY CONFIDENTIAL ISSUE 1 09/2004

Memory Module ............................................................................................... 28

Fold detection-switch ....................................................................................... 28

SIM Interface.................................................................................................... 28

SIM -reader .................................................................................................... 29

SIM switch and card detection ....................................................................... 29

Assembly ........................................................................................................... 31

Flex .................................................................................................................. 31

Security.............................................................................................................. 32

Test Interfaces................................................................................................... 33

Connections to Baseband................................................................................ 33

FBUS Interface ................................................................................................ 34

Test points ....................................................................................................... 34

RF Functional Descriptions ............................................................................. 36

RF block diagram............................................................................................. 36

Frequency synthesizers ................................................................................... 36

VCXO ............................................................................................................. 36

VCO ............................................................................................................... 36

PLL Synthesizer, Functional Description ....................................................... 37

Receiver........................................................................................................... 37

AGC ............................................................................................................... 38

Transmitter....................................................................................................... 38

Dual band FEM .............................................................................................. 38

Power control scheme ................................................................................... 38

List of Figures

Page No

Fig 1 RH-53/54 bb block diagram ......................................................................... 9

Fig 2 IPower distribution diagram.......................................................................... 17

Fig 3 Flex con. pin out........................................................................................... 20

Fig 4 External audio interface ............................................................................... 22

Fig 5 Earpiece/ringer interface .............................................................................. 24

Fig 6 Microphone interface.................................................................................... 25

Fig 7 BL-4C battery............................................................................................... 26

Fig 8 Keyboard PWB layout .................................................................................. 26

Fig 9 UEM, UPP and SIM interface....................................................................... 28

Fig 10 Upper block B-cover SIM-slide slot............................................................ 29

Fig 11 SIM draw and switch .................................................................................. 30

Fig 12 Test pattern............................................................................................... 33

Fig 13 RF block diagram ....................................................................................... 36

Fig 14 Simplified BB, either I or Q channel ........................................................... 37

Fig 15 Power loop ................................................................................................. 38