Introduction; Electrical Modules; Interconnection Diagram; Fig 1 Interconnection Diagram - Nokia NPL-4 Series Manual

NPL-4/5/RM-104
System Module and User Interface

Introduction

Electrical modules

This document describes electrical modules NPL-4/5 and RM-104. Because the electrical
modules are mainly the same, the differencies between modules are mentioned in the
text or otherwise only NPL-4/5 is mentioned.
The system module consists of Radio Frequency (RF) and baseband (BB). User Interface
(UI) contains display, keyboard, IR link, vibra, HF/HS connector and audio parts.
FM radio is located on the main PWB.
The electrical part of the keyboard is located in separate UI PWB. It is connected to radio
PWB through spring connectors.
The Baseband blocks provide the MCU, DSP, external memory interface and digital con-
trol functions in the UPP ASIC. Power supply circuitry, charging, audio processing and RF
control hard ware are in the UEMEK ASIC.
The purpose of the RF block is to receive and demodulate the radio frequency signal from
the base station and to transmit a modulated RF signal to the base station.
The UI module is described in a dedicated section of the manual.

Interconnection diagram

Flashlight
SIM
Antenna
Microphone
Copyright © 2005 Nokia Corporation. All rights reserved.
Page 10
Figure 1: Interconnection diagram
Keyboard
Display
module
Radio
Module
NPL-4/5
NHL-4
IR Link
Nokia Customer Care
IHF
speaker
Battery
Charger
Earpiece
Tomahawk
Accessories
Issue 2 05/05