Service_GD90.pdf

Order Number: MCUK990801C8

GD90 Personal Cellular Telephone

Handheld Portable

EB-GD90

Specification

900MHz

1800MHz

Frequency range

Tx: 890 - 915 MHz

Rx: 935 - 960 MHz

Tx: 1710 - 1785 MHz

Rx: 1805 - 1880 MHz

Tx/Rx frequency separation

45 MHz

95 MHz

RF channel bandwidth

200 kHz

Number of RF channels

124

374

Speech coding

Full rate/Half rate/Enhanced

Full rate

Full rate/Half rate

Operating temperature

-10°C to +55°C

Type

Class 4 Handheld

Class 1 Handheld

RF Output Power

2 W maximum

1W maximum

Modulation

GMSK (BT = 0.3)

Connection

8 ch/TDMA

Voice digitizing

13 kbps RPE-LTP / 13 kps ACLEP / 5.6 kps CELP / VSLEP

Transmission speed

270.3 kbps

Diversity

Frequency hopping

Signal Reception

Double superheterodyne

Intermediate Frequency

282MHz and 45MHz

Antenna Terminal Impedance

50 W

Antenna VSWR

<2.1 : 1

Dimensions

Height: 118 mm

Width: 42 mm

Depth: 16.5 mm

Volume

84.5 cc

Weight

88 g

Display

Graphical chip on glass liquid crystal, Alphanumeric 16 x 3

characters, 5 icons and 6 x 1 characters

Illumination

Green:

4 LEDs for the LCD

8 LEDs for the keyboards

1 LED Incoming call

Red:

1 LED Charging indicator

Keypad

17 keys, Navigation key

SIM

Plug-in type only

External DC Supply Voltage

3.6V

Battery

3.6V

Standby Battery Life

DRX 9

95 hrs maximum

Conversation Battery Life

PL 7, DTX 50%

200minutes

Unless stated these specifications are with Battery Pack (EB-BSD90) fitted.

Battery life figures are dependent on network conditions.

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or

cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or

products dealt with in this service manual by anyone else could result in serious injury or death.

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This Service Manual is copyright and issued on the strict understanding that it is not to be reproduced, copied, or disclosed to

any third party, either in whole or part, without the prior written consent of Matsushita Communication Industrial UK Ltd.

Every care has been taken to ensure that the contents of this manual give an accurate representation of the equipment.

However, Matsushita Communication Industrial UK Ltd. accepts no responsibility for inaccuracies which may occur and

reserves the right to make changes to specification or design without prior notice.

The information contained in this manual and all rights in any designs disclosed therein, are and remain the exclusive property

of Matsushita Communication Industrial UK Ltd.

Other patents applying to material contained in this publication:

BULL CP8 PATENTS

Comments or correspondence concerning this manual should be addressed to:

Customer Support Department,

Matsushita Communication Industrial UK Ltd.,

Colthrop,Thatcham,

Berkshire. RG19 4ZD.

ENGLAND

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WARNINGS AND CAUTIONS

WARNING

The equipment described in this manual contains polarized capacitors utilising liquid electrolyte. These devices are entirely

safe provided that neither a short-circuit nor a reverse polarity connection is made across the capacitor terminals.

FAILURE TO OBSERVE THIS WARNING COULD RESULT IN DAMAGE TO THE EQUIPMENT OR, AT WORST,

POSSIBLE INJURY TO PERSONNEL RESULTING FROM ELECTRIC SHOCK OR THE AFFECTED CAPACITOR

EXPLODING. EXTREME CARE MUST BE EXERCISED AT ALL TIMES WHEN HANDLING THESE DEVICES.

Caution

The equipment described in this manual contains electrostatic sensitive devices (ESDs). Damage can occur to these

devices if the appropriate handling procedure is not adhered to.

ESD Handling precautions

A working area where ESDs may be safely handled without undue risk of damage from electrostatic discharge, must be

available. The area must be equipped as follows:

Working Surfaces - All working surfaces must have a dissipative bench mat, SAFE for use with live equipment, connected via

a 1M2 resistor (usually built into the lead) to a common ground point.

Wrist Strap - A quick release skin contact device with a flexible cord, which has a built in safety resistor of between 5k2 and

1M2 shall be used. The flexible cord must be attached to a dissipative earth point.

Containers - All containers and storage must be of the conductive type.

Batteries

This equipment may contain an internal battery in addition to the external battery packs. These batteries are recyclable and

should be disposed of in accordance with local legislation. They must not be incinerated, or disposed of as ordinary rubbish.

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CONTENTS

1 INTRODUCTION

1.1 Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Structure of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Servicing Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . 1

2 GENERAL DESCRIPTION

2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Handportable Main Kit . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 OPERATING INSTRUCTIONS

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2 LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.3 Location of Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.4 Concept of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.5 Alpha Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.6 Incoming Calling Line Identification (CLI) . . . . . . . . . . . . 7

3.7 Hot Key Dial Source List . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.8 Features Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . 8

3.9 Public Man Machine Interface (MMI) . . . . . . . . . . . . . . . 9

3.10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.11 Important Error Messages . . . . . . . . . . . . . . . . . . . . . . 12

3.12 Security Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.13 SIM Personalisation . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.14 GSM Services Supported by PC Card . . . . . . . . . . . . . 14

3.15 GSM Network Codes and Names . . . . . . . . . . . . . . . . . 14

3.16 Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 DISASSEMBLY / REASSEMBLY INSTRUCTIONS

4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5 TECHNICAL SPECIFICATIONS

5.1 Tx Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2 Rx Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6 TEST AND MEASUREMENT

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.2 External Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.3 Complete Unit Test Setup . . . . . . . . . . . . . . . . . . . . . . . 32

6.4 Channel Box Test Commands . . . . . . . . . . . . . . . . . . . 36

6.5 Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.6 I and Q Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.7 Lock Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

7 CIRCUIT DIAGRAMS

7.1 Main PCB-RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.2 Main PCB-Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.3 Keypad PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

8 LAYOUT DIAGRAMS

8.1 Main PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8.2 Keypad PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

9 REPLACEMENT PARTS LIST

9.1 Case Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.2 Sub-Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.3 Handheld Replacement Parts List . . . . . . . . . . . . . . . . 59

9.4 Printed Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

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