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PAMS Technical Documentation
NHX–4N SeriesTransceivers
Chapter 1
Foreword
Original 01/98
Copyright 1998 Nokia Mobile Phones. All rights reserved.
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NHX–4N
PAMS
Foreword
Technical Documentation
CHAPTER 1– FOREWORD
CONTENTS
Introduction 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Manual Structure 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Company Policy 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings and Cautions 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings: 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cautions: 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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NHX–4N
Technical Documentation
Introduction
Service Manual Structure
The service manual is structured as a series of stand–alone booklets which
can be ordered on an as–required basis. The ’core’ service manual consists
of the following three sets of booklets namely the Transceiver, the
Appendices and Service Software:
NHX–4N series Transceiver booklets
Chapter 1: Foreword
Chapter 2: General Information
Chapter 3: System Module
This section of the service manual describes those areas of the NHX–4N
series handportable phone which are common to all variants. This booklet
includes performance specifications and detailed descriptions of each
module, including main pcb parts lists.
Foreword
comprising:
Appendix to the Transceiver booklets
Chapter 1: Foreword
Chapter 2: Transceiver variant
Chapter 3: Quick Guide
each covering a specific variant
Service Software / Programming Instructions and Servicing
Information booklet.
The accessory booklet is a separate booklet covering
non–serviceable accessories.
Non–serviceable Accessories
IMPORTANT
This document is intended for use by qualified service personnel only .
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NHX–4N
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Foreword
Company Policy
Our policy is of continuous development; details of all technical modifications
will be included with service bulletins.
While every endeavour has been made to ensure the accuracy of this
document, some errors may exist. If any errors are found by the reader,
NOKIA MOBILE PHONES Ltd should be notified in writing.
Please state:
Title of the Document + Issue Number/Date of publication
Latest Amendment Number (if applicable)
Page(s) and/or Figure(s) in error
Please send to: Nokia Mobile Phones Ltd
Technical Documentation
After Sales Technical Documentation
PO Box 86
24101 SALO
Finland
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NHX–4N
Technical Documentation
Warnings and Cautions
Please refer to the phone’s user guide for instructions relating to
operation, care and maintenance including important safety information.
Note also the following:
Warnings:
1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES
FITTED WITH ELECTRONIC ENGINE MANAGEMENT
SYSTEMS AND ANTI–SKID BRAKING SYSTEMS. UNDER
CERTAIN FAULT CONDITIONS, EMITTED RF ENERGY CAN
AFFECT THEIR OPERATION. IF NECESSARY, CONSULT
THE VEHICLE DEALER/MANUFACTURER TO DETERMINE
THE IMMUNITY OF VEHICLE ELECTRONIC SYSTEMS TO
RF ENERGY.
2. THE HANDPORTABLE TELEPHONE MUST NOT BE
OPERATED IN AREAS LIKELY TO CONTAIN POTENTIALLY
EXPLOSIVE ATMOSPHERES EG PETROL STATIONS
(SERVICE STATIONS), BLASTING AREAS ETC.
Foreword
3. OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT,
Cautions:
1. Servicing and alignment must be undertaken by qualified
2. Ensure all work is carried out at an anti–static workstation and
3. Ensure solder, wire, or foreign matter does not enter the
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are
INCLUDING CELLULAR TELEPHONES, MAY INTERFERE
WITH THE FUNCTIONALITY OF INADEQUATELY
PROTECTED MEDICAL DEVICES. CONSULT A PHYSICIAN
OR THE MANUFACTURER OF THE MEDICAL DEVICE IF
YOU HAVE ANY QUESTIONS. OTHER ELECTRONIC
EQUIPMENT MAY ALSO BE SUBJECT TO INTERFERENCE.
personnel only.
that an anti–static wrist strap is worn.
telephone as damage may result.
correctly re–fitted after servicing and alignment. Ensure all
cables and wires are repositioned correctly.
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