The service manual is structured as follows:–
The ’core’ service manual
Foreword
General Information
Technical Information
Parts Lists
Service Software
Mechanical Parts/Assembly instructions
Additional sections
Service Tools
Troubleshooting
Installation Instructions
JBD–2 User Guide
IMPORTANT
This document is intended for use by qualified service personnel only .
Issue 1 10/99
5Page
Programmes After Market Services
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
After Sales Technical Documentation
PO Box 86
24101 SALO
Finland
6Page
Issue 1 10/99
Programmes After Market Services
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.
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.
The CD 949 is a fixed carphone consisting of 3 Main units.
SGSM transceiver – carries the main phone, it consists of
a 8W GSM–transceiver, power supply, HF circuit and a
SIM–Card reader for a big simcard,
SHandset– The handset carries a large Display, key
board, earpiece and microphone and a SIM–Reader for
a small simcard.
SCradle – holds the handset and carries a magnet
for Hook On/Off detection in the Handset.
For Downlink HF audio, 2 outputs and1 Power amplifier drive a
Loudspeaker and 1 Lineout signal to use the cars entertainment system.
For modem applications it is also possible to operate the GSM
Transceiver without the cradle and the handset.
GSM Transceiver
General Information
The GSM Transceiver is the main part of the Product and carries the main
GSM radio; it has 3 Connectors:
1.RF connector (GSM antenna)
2.Data Connector (Laptop)
The features of the GSM Tranceiver are listed below
1.Class 2 (8W) phase GSM 900 transceiver
2.Power supply
3.Support of ignition sense and backlightdimming signals
4.Delivery of Carradiomute and Antenna motor control signals
5.High Quality Handsfreeaudio (car enviroment)
6.Poweramplifier for 4W Handsfree Loudspeaker
7.Support of active Handsfree microphone according to VDA
standard
8.Delivery of lineout signal to use the Car radio’s amplifiers and
Loudspeakers for Handsfree
9.SIM reader for large SIM–Card
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10.RS–232 interface for Laptop connections (At commands)
11.Connection to Handset (via system cable)
12.Car data interface for remotecontrol and Data applications
Page 3
NME–3
PAMS
General Information
Technical Documentation
Modules/Accessories
Unit/type:Product code: Module code:
Transciever (radio unit) NME–30600128
Handset RTE–2HJ0640102
Cradle CRD–80650028
System Module RU GM8B0201346
System Module HS AH890201345
MRTE2HJ Mechanical Assembly HS0261940
MNME3 Mechanical Assembly RU0261941
HFM 15 Handsfree Mic.0630236
HFM10 Handsfree speaker0692006
System cable and carkit SCM–5K0730173
Mounting bracket MBE–29457320
Swivel mount HHS–90620037
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PAMS
NME–3
Technical Documentation
Technical Overview
The mobile is built around the DCT–3 core (originally designed for a
handportable phone) to operate in the GSM system. This is possible with
a modest extension to the hardware as some provisions for use in a mobile are already included in the original core design. Some extensions to
the original design has been necessary to be able to operate in an automotive environment, to include built–in handsfree operation and to use
an active handset instead of the UI flex board of the handheld.
The purpose of the baseband module is to control the phone, process
audio signals to and from the RF block and to and from the handset/
handsfree transducers. The module also includes a SIM card reader and
furnishes external data (RS232 and Remote control via AT commands)
and VDA specific control lines like BLD, AMC, CRM and IGNS.
The entire transceiver is built on a single multilayer PCB which is enclosed
in a housing consisting of a metal bottom part, metalized shield, plastic
part and a plastic top cover. The shield has different chambers to seperate
RF from BB and to prevent trouble with Emmisions and Immunity tests
during TA testing. Most components of the baseband section are surface
mountable and are soldered using reflow.
General Information
The transceiver has three connectors.
– 32 pole connector which basically implements the car manufacturer
recommendation for a GSM mobile phone, RU–HS connection, line–out
connection.
– A 9 pole connector for data transfer.
– The RF connector for the antenna.
All internal connections on the board are by PCB wiring. The SIM card
reader is soldered to the board.
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NME–3
PAMS
General Information
CD949 Radio Unit
NME–3
GSM900
Antenna
RS232
Data IF
M/FBUS
Handset
RTE–2HJ
VDA Car Signals
HF Audio
Audio Line–Out
Technical Documentation
cradle
CRD–8
Figure 1. System Overview of CD949
The GSM Transceiver is the main part of the Product, carring the main
GSM radio. Its has 3 Connectors:
1.System connector (Powersupply , Car signals, Audiosignals,
Handset Cardata)
2.RF connector (GSM antenna)
3.Data Connector (Laptop)
The features of the GSM Tranceiver are listed below
1.Class 2 (8W) phase GSM 900 transceiver
2.Powersupply
3.Support of ignition sense and backlightdimming signals
4.Delivery of Carradiomute and Antenna motor control signals
5.High Quality Handsfreeaudio (car enviroment)
6.Poweramplifier for 4W Handsfree Loudspeaker
7.Support of active Handsfree microphone according to VDA
standard
Page 6
8.Delivery of lineoutsignal to use the Carradios amplifiers and
Loudspeakers for Handsfree (balanced)
9.SIM reader for large SIM–Card
10.RS–232 interface for Laptop connections
11.Connection to Handset
12.Car data interface for remotecontrol and Data applications
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PAMS
NME–3
Technical Documentation
RF
General Information
RS 232 to Laptop
DSUB–9
Transceiver
System connector
Antenna
Car battery
Ignition
Car radio mute
Antenna motor control
Backlight dimming
Microphone
Loudspeaker
Car radio audio in
Car application
Handset
Cradle
Test–/Flash Interface
Figure 2. CD949 interconnection diagram
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NME–3
PAMS
General Information
Technical Documentation
Technical Specification
ParameterType
Cellular SystemGSM 900 Phase II
Tranciever TypeClass 2 Mobile (8 Watt)
System cable Interface32 pole AMP connector
Data InterfaceRS232 (full protocoll)(DSUB 9) and Re-
mote control via system conector (sys-
tem)
InstallationTrunk, cabin or DIN slot
SIM cardFull size SIM in RU (ISO 7816)
Mini SIM in HS (ISO 7816)
Operational Temperature–20 C to + 60 C (normal performance)
–40 C to + 85 C (reduced performance)
–40 C to + 85 C (storage)
Supply voltage (transmitting)10.8 V to 16 V
Current consumption (power off)< 1mA
Current consumption (idle mode)150mA
Current consumption (transmit at max.
Note: In printed manuals all A3 drawings are located at the back of the binder
PAMS
Page 4
Amendment 11/99
PAMS
NME–3
Technical Documentation
Introduction
The CD949 has 3 Basic Operating Modes, divided into submodes:
Powerdown Mode:
In powerdown mode the complete system is switched off, it is not in
service and consumes a minimum of current.
Idle Mode
normal mode
In idle mode the phone is switched on and in service (if inside network
coverage).
timer mode
When Ignition is switched off the phone goes in to timermode. This means
that the phones stays in idlemode for a specified time and switches itself
off if no action from the user takes place.
Technical Information
Call Mode
HF voice call
Handsfree voice call
HS voice call
Handset voice call
Data call
Receive transmit data
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NME–3
Technical Information
Power Distribution
Power is supplied to the system via the System–Cable or SCM5 (longer
one). The Figure below shows an overview of Power Supply and
Protection Circuits
Carbat+
Carbat–
PowerOn
LineFilter
TVS
Si Switch
&
Aux
Protect
Technical Documentation
12V Supply
8V
Regulator
8V Supply
PAMS
Supply
Monitor
Figure 1. Power Supply Block Diagram
Table 1. Supply Voltages and Power Consumption
Pin / Conn.Line SymbolMinimumTypical /
1/System
17/System
VBATT0
VBATT 1.5
LoPower
Regulator
_OVERVOLTAGE
_POWERF AIL
_POWERCRITICAL
Nominal
5
10.8
16
13.5
150
Feedback
MaximumUnit / Notes
5
10.8
16
28
4
500
1
Post–Regulator /
LoPower Bypass
V/ no operation
V/ reduced operation
V/ nomal operation
V/ no Operation
A Callmode
mA Idle mode
mA Powerdown mode
3.8V Supply
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PAMS
NME–3
Technical Documentation
Table 2. External Signals
Pin / Conn.Line SymbolMinimumTypical /
Nominal
11/SystemIgnition9
3/SystemBacklightdimming9
4/SystemAntenna motor
control
20/SystemCar radio mute
21/SystemFBUS Rx
5/SystemFBUS Tx
0
13%
60
V–BATT–1VBATT
9
13.516
13.516
1
Technical Information
MaximumUnit / Notes
V / ON
0.6
100%
100
0.3
100
0.3
V–BATT
V / OFF
V / High voltage
% / Duty Cycle
Hz / Frequency
V / ON
V / OFF
mA/ Current
V / Voicecall active
V / inactive
kW / external pullup
resistance
23/SystemMBUSHandset
22/SystemMBUSTest/Flash
28/SystemHFMic92843mVrms
32/SystemHF P2342828mVrms
31/SystemHF N2342828mVrms
14/SystemLine out P702000mVrms
13/SystemLine out N702000mVrms
9/SystemHSEar N28802mVrms
10/SystemHSEar P28802mVrms
26/SystemHSMicN87790mV Microphone –
Power is first filtered and protected agains Voltages>30V and Reverse
Voltage. The Supply Monitor switches off the 12V Supply via Si–Switch at
supply Voltages > 16.25V. Aux–Protect clamps peak pulses that are not
covered by the Supply Monitor. Three signals are provided to detect
different supply–voltage levels by other hard– and software:
_OVERVOLTAGE is active at >16.25V, _POWERFAIL at <10,9V.
_POWERCRITICAL is active at a drop of more than 5% on 3.8V Supply. A
LowPower Regulator is used for sleep power for CCONT and MAD.
Three different Voltages are used in CD949. 3.8V for CCONT
(VBCCONT), 8V for RF–PREAMP, AUDIO and for VBCCONT
Regulator,HS and 12V for RFPA, Audio PowerAmp. 12V and 8V can be
switched by PowerOn and automatically by _OVERVOLTAGE.
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PAMS
NME–3
Technical Documentation
Power Supply – Handset
Power is supplied to the HS via cable from RU. The Figure below shows
an overview of Power Supply and Reset Circuits.
8V
LineFilter
GND
Supply
Monitor
5V
Regulator
3V
Regulator
FIL TER
Technical Information
8V Backlightdiming
5V Audio
5V Digital
RESET
Generator
_RESOUT
3V
SUPPLOWINT
Figure 2. Power Supply Blockdiagram
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NME–3
Technical Information
External Signals and Connections
CD949 has three external connectors:
– System Connector
– Data Connector
– RF Connector
The CD949 transceiver unit GM8B has 3 digital interfaces between the
MAD and external devices. These are the data or RS232 interface, to use
the transceiver as modem. The handset interface used for communication
between the radiounit and the handset, and the Test and Flash interface,
needed for production and after sales purposes. All of these interfaces are
implemented using the M– and F–Bus coming from the MAD.
Table 4. Data interface Spec RS 232
Signal
name
RS232
DCD
RS232TXOutput+– 3,3V .. 15VPIN 2RS 232 interface for dataaplications and remo-
RS232RXInput+– 3,3V .. 15VPIN 3RS 232 interface for dataaplications and remo-
RS232
DTR
Signal-
type
Output+– 3,3V .. 15VPIN 1Handshake: Data Carrier Detect
Input+– 3,3V .. 15VPIN 4Handshake: Data Terminal ready
electrical specPinnum-
ber
Notes
tecontrol aplications using advanced At–commandset
tecontrol aplications using advanced At–commandset
GNDPower-
supply
RS232
DSR
RS232
RTS/
RS232
CTS
RIOutput+– 3,3V .. 15VPIN 9handshake: Ring Indication
Output+– 3,3V .. 15VPIN 6Handshake: Data Set Ready
Input+– 3,3V .. 15VPIN 7handshake: ready for receiving
Output+– 3,3V .. 15VPIN 8handshake: Clear to send
0V DC GNDPIN 5
All Signals converted from RS232 level to 2.8V with a normal RS232
Levelconverter which has an own chargepump. All handshake signals are
controlled by the MAD via the Row/Col pins originally used for the
keyboard . The RX and TX signals are connected to the F–Bus that is
shared with the Testinterface.
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NME–3
Technical Information
SIM Connector RU
PAMS
Technical Documentation
Table 5. SIM–Card interface
PinLine SymbolMinimumTypical /
Nominal
1VCC4.5
2.7
2Reset0
4.3
0
2.4
3CLK0
3.5
0
2.1
45
13.25
4N.C.reserved for future use
MaximumUnit / Notes
5.5
3.3
10
6
0.6
VCC
400
0.6
3
400
0.5
5
0.6
3
9% of period
9% of period
50
50
55
5
V / supply voltage for 5V
cards
V / supply voltage for 3V
cards
mA / supply current for 5V
cards
mA / supply current for 3V
cards
V / low voltage for 5V
cards
V / high voltage for 5V
cards
µs / rise and falltime
V / low voltage for 3V
cards
V / high voltage for 3V
cards
µs / rise and falltime
V / programming voltage
idle state 5V cards
V / programming voltage
idle state 3V cards
V / input low voltage 5V
cards
V / input high voltage 5V
cards
V / output low voltage 5V
cards
V / output high voltage 5V
cards
V / input low voltage 3V
cards
V / input high voltage 3V
cards
V / output low voltage 3V
cards
V / output high voltage 3V
cards
µs / risetime
µs / falltime
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NME–3
Technical Information
SIM Connector HS
PAMS
Technical Documentation
Table 6. SIM–Card interface
PinLine SymbolMinimumTypical /
Nominal
1VCC4.5
2.7
2Reset0
4.3
0
2.4
3CLK0
3.5
0
2.1
45
13.25
4N.C.reserved for future use
MaximumUnit / Notes
5.5
3.3
10
6
0.6
VCC
400
0.6
3
400
0.5
5
0.6
3
9% of period
9% of period
50
50
55
5
V / supply voltage for 5V cards
V / supply voltage for 3V cards
mA / supply current for 5V
cards
mA / supply current for 3V
cards
V / low voltage for 5V cards
V / high voltage for 5V cards
µs / rise and falltime
V / low voltage for 3V cards
V / high voltage for 3V cards
µs / rise and falltime
V / low voltage 5V cards
V / high voltage 5V cards
V / low voltage 3V cards
V / high voltage 3V cards
ns / risetime 5V cards
ns / falltime 5V cards
ns / risetime 3V cards
ns / falltime 3V cards
% / duty cycle
MHz / clock frequency
5GNDground
6VPP4.5
2.7
7I/O–0.3
3.5
0
3.8
–0.3
2.1
0
2.1
8N.Creserved for future use
5.5
3.3
0.8
5.3
0.4
5
0.6
3.3
0.4
3
1
1
V / programming voltage idle
state 5V cards
V / programming voltage idle
state 3V cards
V / input low voltage 5V cards
V / input high voltage 5V cards
V / output low voltage 5V
cards
V / output high voltage 5V
cards
V / input low voltage 3V cards
V / input high voltage 3V cards
V / output low voltage 3V
cards
V / output high voltage 3V
cards
µs / risetime
µs / falltime
Page 14
Issue 1 10/99
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