Nokia 2040 TRANSCEIVER
TRANSCEIVER
NHK–3
11/97 OJ
Technical Documentation
Contents of Transceiver
Transceiver NHK–3 7–2
Introduction 7–2
Functional Description 7–2
Interconnection Diagram 7–3
Exploded View of NHK–3XN 7–4
Assembly Parts of NHK–3XN 7–5
Exploded View of NHK–3XA 7–6
Assembly Parts of NHK–3XA 7–7
Exploded View of NHK–3XB 7–8
Assembly Parts of NHK–3XB 7–9
Exploded View of NHK–3XT 7–10
Assembly Parts of NHK–3XT 7–11
7–1
Copyright Nokia Mobile Phones
TRANSCEIVER
NHK–3
Transceiver NHK–3
Related Documentation
Introduction
The NHK–3 is a radio transceiver unit for the Pan–European PCN network. It is
PCN power class 4 transceiver providing 11 power levels at a maximum power
of 1 W. The standard is defined together by all related parties in the European
Telecommunications Standard Institute, ETSI.
11/97 OJ
Technical Documentation
0260346 Mechanics of NHK–3XN
0260347 Mechanics of NHK–3XA
0260348 Mechanics of NHK–3XB
0261065 Mechanics of NHK–3XT
0260521 Mechanics of NHK–3XP
7–2
Copyright Nokia Mobile Phones
The transceiver consists of three modules: system module, user interface module and mechanics.
The plug–in SIM (Subscriber Identity Module) card reader is located inside the
phone.
Functional Description
The transceiver electronics consist of radio module (system + RF blocks) and
UIF module. UIF module is connected to radio module with a connector. System blocks and RF blocks are interconnected with PCB wirings. Transceiver
can be connected to accessories with a bottom system connector, which includes charging and accessory control.
The system blocks provides MCU and DSP environments, logic control IC
(EDSA), memories, audio processing and RF control hardware (RFI). On board
power supply circuitry delivers operating voltage for both system and RF
blocks.
The general purpose microcontroller, Hitachi H8, communicates with DSP, memories and logic control IC (EDSA) with 8 bit data bus.
RF block is designed for a handportable phone; which operates in GSM system. Purpose of the RF block is to receive and demodulate radio frequency signal from the base station and to transmit a modulated RF signal to the base
station.
TRANSCEIVER
NHK–3
11/97 OJ
Technical Documentation
Interconnection Diagram
SIM Display
524
2
MIC
UI – MODULE
7–3
Copyright Nokia Mobile Phones
2
EARPIECE
2
BUZZER
RADIO – MODULE
16 2+2 2
SYSTEM
CONNECTOR
30
4
BATTERY
CHARGER ANTENNA
TRANSCEIVER
NHK–3
11/97 OJ
Technical Documentation
Exploded View of NHK–3XN
7–4
Copyright Nokia Mobile Phones
update:08.05.1995
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