Panasonic EB-GD30 Quick start guide

Order Number: MCUK991001G8
Issue 1
Revision 0
Technical Guide
GD30/GD50 Personal Cellular Telephone
Handheld Portable
EB-GD30
EB-GD50
Specification
Battery life figures are dependent on network conditions.
900 MHz 1800 MHz
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 1 W 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 Frequencies 282 MHz and 45 MHz
Antenna Terminal Impedance 50 Ω
Antenna VSWR <2.1 : 1
Dimensions Height: 135 mm
Width: 45 mm
Depth: 20.5 mm (30 mm with EB-BLD30 Battery)
Volume 123 cc (150 cc with EB-BLD30 Battery)
Weight GD30: 130 g with EB-BSD30 Battery (170 g with EB-BLD30)
GD50: 115 g with EB-BSD50 Battery (170 g with EB-BLD30)
Display Graphical chip on glass liquid crystal, Alphanumeric,
16 x 3 characters, 5 icons and 6 x 1 characters
Illumination 4 LEDs for the LCD (Green)
8 LEDs for the keypad (Green)
1 LED Incoming call (Green)
1 Charging LED (Red)
Keypad 17 keys, Navigation key
SIM Plug-in type only
External DC Supply Voltage 3.6 V
Battery EB-BSD30: 3.6 V nominal, 670mAh, Ni-MH
EB-BSD50: 3.6 V nominal, 670mAh, Li-Ion
EB-BLD30: 3.6 V nominal, 1340mAh, Ni-MH
Standby Battery Life
DRX 9
EB-BSD30/EB-BSD50: 95 hrs maximum
EB-BLD30: 190 hrs maximum
Conversation Battery Life
PL 7, DTX 50%
EB-BSD30/EB-BSD50: 180 minutes
EB-BLD30: 360 minutes
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.

Issue 1 – ii – MCUK991001G8
Revision 0 Technical Guide
This Technical Guide 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
© 1999 Matsushita Communication Industrial UK Ltd.

MCUK991001G8 Section Issue 1
Technical Guide – iii – Revision 0
CONTENTS
1 INTRODUCTION
1.1 Purpose of this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Structure of the Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 INTERFACES AND TEST POINTS
2.1 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 RF OVERVIEW
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 RF & Accessory Connector . . . . . . . . . . . . . . . . . . . . . . 12
4 TRANSMITTER
4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Uplink Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 RECEIVER
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2 Downlink Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 BASEBAND OVERVIEW
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Functional Description of the PCB . . . . . . . . . . . . . . . . 19
7 GEMINI
7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 VEGA
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 POWER SUPPLIES
9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.3 Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.4 Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.5 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Issue 1 Section MCUK991001G8
Revision 0 – iv – Technical Guide
This page is left intentionally blank.

INTRODUCTION
MCUK991001G8 Section 1 Issue 1
Technical Guide – 1 – Revision 0
1 INTRODUCTION
1.1 Purpose of this Guide
This guide contains technical information for the Panasonic GD30 personal cellular telephone system operating on the GSM
network. Procedures for installing, operating and servicing (e.g. disassembly and testing) the telephone system are provided
in the associated Service Manual.
1.2 Structure of the Guide
The guide is structured to provide service-engineering personnel with the following technical information on the GSM mobile
telephone:
1. Interface details and relevant test points.
2. Functional description of each section of the mobile telephone.
3. Detailed description of each section of the mobile telephone.

INTRODUCTION
Issue 1 Section 1 MCUK991001G8
Revision 0 – 2 – Technical Guide
This page is left intentionally blank.

INTERFACES AND TEST POINTS
MCUK991001G8 Section 2 Issue 1
Technical Guide – 3 – Revision 0
2 INTERFACES AND TEST POINTS
2.1 Interfaces
2.1.1 Main and Keypad PCBs
The interface between Main and Keypad PCBs is made via a 32-way connector as follows:
Figure 2.1: GD30/GD50 Interboard Connector
No. Signal Name MAIN <=> KEYPAD Function Connection
1 2V8 - Power Source for LCD Module
2 DATA(7) <==> MPU Data bus (7)
3 DATA(6) <==> MPU Data bus (6)
4 DATA(1) <==> MPU Data bus (1)
5 DATA(2) <==> MPU Data bus (2)
6 DATA(4) <==> MPU Data bus (4)
7 DATA(0) <==> MPU Data bus (0)
8 DATA(5) <==> MPU Data bus (5)
9 DATA(3) <==> MPU Data bus (3)
10 GROUND -
11 PGLEDOUT ==> Paging LED control signal SIM_PWR IC pin 22
12 RnW ==> MPU Read/nWrite signal GEMINI pin 20
13 CS_LCD ==> LCD chip select signal GEMINI pin 55
14 nRESET ==> MPU nRESET signal
15 KBC(0) ==> Key Column 0 signal for Key scan GEMINI pin 132
16 KBC(1) ==> Key Column 1signal for Key scan GEMINI pin 133
17 KBC(2) ==> Key Column 2 signal for Key scan GEMINI pin 130
18 KBC(3) ==> Key Column 3 signal for Key scan GEMINI pin 129
19 KBC(4) ==> Key Column 4 signal for Key scan GEMINI pin 128
20 KBR(0) <== Key Row 0 signal for Key scan GEMINI pin 126
21 KBR(1) <== Key Row 1 signal for Key scan GEMINI pin 125
22 KBR(2) <== Key Row 2 signal for Key scan GEMINI pin 124
23 KBR(3) <== Key Row 3 signal for Key scan GEMINI pin 123
24 KBR(4) <== Key Row 4 signal for Key scan GEMINI pin 122
25 nPOWKEY <== Power Key sense signal
26 GROUND -
27 CHLEDOUT ==> Charge LED control signal GEMINI pin 105
28 2V8 - Power Source for LCD Module
29 ADDRESS(1) ==> MPU Address bus (1) GEMINI pin 25
30 BKLTOUT ==> Key Backlight Power Source Charge IC pin 16
31 EAR_N ==> Receiver Negative Output
32 EAR_P ==> Receiver Positive Output
10160-1
KBR(3)DATA(0) 7 23
GROUNDGROUND 10 26
KBC(2)2V8 1 17 KBC(3)DATA(7) 2 18 KBC(4)DATA(6) 3 19 KBR(0)DATA(1) 4 20 KBR(1)DATA(2) 5 21 KBR(2)DATA(4) 6 22
KBR(4)DATA(5) 8 24 nPOWKEYDATA(3) 9 25
CHLEDOUTPGLEDOUT 11 27 2V8RnW 12 28 ADD(1)CS_LCD 13 29 BKLTOUTnRESET 14 30 EAR_NKBC(0) 15 31 EAR_PKBC(1) 16 32
P100

INTERFACES AND TEST POINTS
Issue 1 Section 2 MCUK991001G8
Revision 0 – 4 – Technical Guide
2.1.2 External Interface
The GD30 and GD50 telephones have two external connectors:
1. a multi-way connector for use with external accessories such as hands free kits and PC data card.
2. additional contacts for charging the battery pack while inserted in the desktop charger.
Main Unit <==> External I/O
No. Name H/H <=> EXT Total Function H/H Circuit
1 GND ==> 6 Ground
2 PA_ON ==> 1 Gating of spectrum analyser for Transmitter
performance testing
L: Off, Hi - Z: On)
3 nLOGIC_PWR ==> 1 Accessory Power Control signal.
In the handsfree this is logical OR’ed with
IGNITION in order that the software can
maintain the Handsfree power-on state if the
user is in a call and that the IGNITION is
switched off. L: Power-on, Hi-Z: Power-off
4 IGNITION <== 1 IGNITION is used in two cases.
1) Determine the mode of operation of the H/H
when the Handsfree accessory is attached.
L: At a suitable time enter dummy sleep mode
and therefore minimise the drain on the car
battery (nLOGIC_POWER = Hi - Z)
H: Normal mode
2) Satisfy 2nd of 2 conditions for sending
initialise Testset command and entering Testset
mode. (see nADP_SENSE for 1st condition)
L: Condition 2 satisfied
H: Enter Testset mode not satisfied
5 VBAT <=> 1 The pin is either an input or an output
depending upon the battery connection.
1) Battery/Dummy battery connected: Output
supply terminal for attached accessories.
2) No connection: Low current input supply
terminal for non-RF performance checking in
Testset Mode or Flash programming.
6 nH/F_SENSE <== 1 Handsfree sense line
L: connected
H (internal pull-up): disconnected
7 nRADIO_MUTE ==> 1 Radio Mute
L: mute, Hi-Z: unmute)
8 RX_AUDIO ==> 1 Accessory Receiving Audio
-16 dBm0 = 76.7m Vrms
9 GND ==> Ground Refer to pin 1
10 EXT-PWR <== 2 Power supply for battery charging, Power ON/
Off control and accessory control circuits.
Voltage: 5.8 ± 0.2 V
Current: 650 ± 50 mA
10095-1
10k
330p
10096-1
330
10097-1
330
50k
200
k
10098-1
10099-1
330
100k
10100-1
330
50k
200
k
10101-1
560
1F
10102-1
10103-1
Trickle Charge Circuit
Power On/Off Control Circuit
Rapid Charge Circuit
Accessory Control Circuit

INTERFACES AND TEST POINTS
MCUK991001G8 Section 2 Issue 1
Technical Guide – 5 – Revision 0
11 NON_HOOK <== 1 Indicates if the optional second handset is on or
off hook. In handsfree operation, if the optional
handset is not fitted this signal defaults to on
hook. (Low.)
12 SERIAL_OUT ==> 1 Downlink Serial Data
(Baud rate is same as SERIAL_IN)
13 SERIAL_IN <== 1 Uplink Serial Data
The baud rate is dependant upon the attached
accessory, whether operating in Testset Mode
or Flash Downloading.
SMS cable: 9600 bps
RS232 Direct cable: 38.4 kbps
Data adapter: 33.8 kbps
Testset: 9600 bps
Flash Download: 56 kbps
14 nADP_SENSE <== 1 NADP_SENSE has 5 possible states. The state
is determined by the value of the pull-down
resistor in the attached accessory / test set.
NADP_SENSE has 2 purposes as follows:
1) To identify an attached accessory.
Open (H): No attached accessory
82 kΩ=± 1% (MH): Headset Adapter
56 kΩ=± 1% (M): SMS Cable
33 kΩ=± 1% (ML): RS232C Direct Cable
GND (L): Data Adapter
2) Determine whether the 1st of 2 conditions
are satisfied for sending the initialise Testset
command on SERIAL_OUT, and entering
Testset mode (see IGNITION for 2nd condition).
H/MH: Condition 1 satisfied
M/ML/L: Enter Testset Mode not satisfied
15 NH/F_ON ==> 1 Accessory Sending & Receiving Audio paths
unmute
L: unmute, Hi-Z: mute
16 GND ==> 6 Refer to pin 1 Refer to pin 1
17 TX_AUDIO <== 1 Accessory Sending Audio
-16 dBm0 = 40.4 m Vrms
18 GND ==> 6 Ground connection of Dual Charger Refer to pin 1
19 GND ==> 6 Ground connection of Dual Charger Refer to pin 1
20 GND ==> 6 Ground connection of Dual Charger Refer to pin 1
21 GND ==> 6 Ground connection of Dual Charger Refer to pin 1
22 CHARGE_ON <=> 1 The Dual Charger shall hold CHARGE_ON to
the middle level until a H/H is inserted into the
front slot.
H: 2.0<=V<=3.0 volts; Dual Charger detects
connection of H/H
M: 1.0<=V<2.0 volts; Unconnected
L: 0.0<=V<1.0 volts; Dual Charger detects
connection of H/H
23 EXT_PWR <== 2 The Dual Charger shall control switching of the
power supply to the front slot (corresponds to
EXT_PWR) based on the state of the
CHARGE_ON signal.
H: EXT_PWR supplied
L: When the H/H can determine whether or not
to set CHARGE_ON. After the insertion of the
H/H, EXT_PWR shall be subsequently supplied
withinTBA hours
Refer to pin 8
No. Name H/H <=> EXT Total Function H/H Circuit
330
100k
10100-1
330
2.2k
47k
10104-1
330
4.7 k
10105-1
330
100k
10100-1
330
50k
200
k
10101-1
11 10k
3k3
10106-1
10k
330
CHARGE_ON
0.1µ
10107-1

INTERFACES AND TEST POINTS
Issue 1 Section 2 MCUK991001G8
Revision 0 – 6 – Technical Guide
Battery Connector
SIM Interface
No. Name H/H <=> EXT Total Function H/H Circuit
1 VBAT <== 1 Positive battery terminal.
Li+ (2 cells in parallel): 3.6 V nom.
NiMH (3 cells in series): 3.6 V nom.
2 BAT_TEMP <== 1 BAT_TEMP has 2 purposes.
1) Determine whether a battery is attached to
the H/H.
2) Monitor battery temperature for the purposes
of charging.
H: Abnormal battery
M: Li+ or NiMH charging
L: No battery or abnormal battery
3 GND <== 1 Negative battery terminal
4 BAT_ID <== 1 BAT_ID is used to identify the type of attached
battery.
H: Li+ or no battery connected.
L: NiMH
Pin Signal
1GND
25V
3 Not connected
4 Reset
5 Serial input/output
6 Clock
7 Not connected
8 Not connected
10108-1
ChargerIC VREFOUT
ESD
Vega_ADIN2
ESD
Protection
10109-1
10110-1