Nokia 5140 Manuales De Servicio

NPL-4/5

System Module and User Interface

Nokia Customer Care

Page 10

 Copyright © 2004 Nokia Corporation. All rights reserved.

Issue 1 05/04

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.

IHF 

speaker

Tomahawk 

Accessories

 

Keyboard

 

module

 

Microphone

 

IR Link

Earpiece

Antenna

Charger

Battery

SIM

 

Display

Module

NHL-4

Radio