Nokia 6220 Service Manual

CCS Technical Documentation

System Module and User Interface

                                 

Company confidential 

RH-20

Issue 1  10/2003

  Nokia Corporation.

Page 7

The system module 1AO consists of Radio Frequency (RF) and baseband (BB). User Inter-
face (UI) contains display, keyboard, IR link, vibra, system connector and audio parts.

FM radio is located on the main PWB 1AO.

The electrical part of the keyboard is located in separate UI PWB named 1dm. 1dm is 
connected to radio module PWB through a spring connector.

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 UEM 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 this section of the manual.

IHF 

speaker

Tomahawk 

Accessories

 

Keyboard

 

module

 

Microphone

 

IR Link

Earpiece

Antenna

Charger

Battery

SIM

 

Display

Module

NHL-4

Radio

CIF
Camera