1997 ASTON MARTIN DB7 Workshop Manual

The Aston Martin Lagonda Diagnostic System
Installation Instructions -=2?
Step 11
Adjust the contrast control. Is the PDU touch screen illuminated?
YES - Co to step 12
NO - Renew the PDU (0017)
Step 12
Observe the display screen. Is the screen displaying a PDU hard error symbol similar to that shown in Fig 17
YES - Note the number and refer to 'Parts Ordering'.
NO - Co to step 13
Figure 17. PDU hard error code
Step 13
Observe the screen display. Is the screen displaying the main menu (Fig 9)?
YES-Co to step 14
NO - Go to step 15
Step 14
Select the PDU system self test option and press the 'tick'
icon.
Does the screen respond?
YES - Co to step 15
NO - Renew the PDU (001 7)
Step 15
Observe the display screen. Is the screen displaying the symbol shown in Fig 18?
YES - Connection problem, go to step 17
NO - Co to step 16
Figure 18. Communications blocked
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^^
The Aston Martin Lagonda Diagnostic System
Installation Instructions
Step 16
Observe the display screen. Is the screen displaying
either of the symbols shown in Fig 19?
YES - Remove the CD caddy and check the CD-ROM.
Re-install the CD-ROM. Go to step 13.
NO - Co to step 19
Figure 19. Reload the CD and retry
Step 17
Connect the PDU to the base station top left connector using the second PDU to base station cable (0064) (Fig 34).
Is the screen displaying the symbol shown in Fig 15?
YES - Go to step 18
NO - The first PDU to base station cable is faulty, renew the cable (0064)
Step 18
Connect the PDU to the VIA using cable (0030) and connect the VIA to the VBA using cable (0028). Connect the
VBA to a charged battery. Does the VIA panel indicator flash for more than 5 seconds after pressing the 'tick'
icon.

YES - Renew the electronic module (0019)
NO - Renew the PDU (001 7)
Step 19
Observe the screen display. Is the screen displaying the
symbol shown in Fig 20?
YES - During the data transfer, the connection was lost.
Check to see if the cable connections are intact, if not,
reconnect and go back to step 13.
NO - Go to step 20
Figure 20. Data transfer connection lost
Step 20
Observe the screen display, is the language selection
screen displayed (Fig 21)?
YES - Try to select a language, go to step 21
NO-Call your local GenRad Service Centre for advice.
(^G?) English
Figure 2
7.
Language selection screen
May 1996 9-19

The Aston Martin Lagonda Diagnostic System
Installation Instructions =27
step 21
Observe the screen display. Is the system loading from the CD-ROM?
YES - Go to step 13.
NO - Renew the PDU (001 7).
Parts Ordering
Before calling GenRad, it is essential that the system self test is run from the main menu. If the system self test will
not run or the PDU does not switch on, follow the Problem Solving procedures.
The system self test option will identify any fau It and display a fault code on the PDU screen. This fault code number
must be recorded. When in contact with your local GenRad Service Centre, they will require this number in order
to send the correct substitute parts.
Before calling the GenRad Service Centre, please have the following information available.
Dealer Name and Address
Name of the contact at that address
PDU Serial Number (base station LHS - Fig 22)
Fault Code, Component Name and Serial Number as given on the PDU screen during self test.
Ifthe system self test will not run, GenRad will require the name and part number ofthe component identified during
he Problem Solving Procedures.
Figure 22. Diagnostic System Serial Number
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' -^ ^ The Aston Martin Lagonda Diagnostic System
Installation Instructions
Service Centres
UK and EIRE
GenRad Limited, Horsefield Way, Bredbury Industrial Park, Bredbury, Stockport, Cheshire SK6 2SU, England
Telephone: 061-406-8209 Fax: 061-406-8480
Germany
GenRad GmbH, Neumarkter Strasse 83, 81673 Munchen, Germany
Telephone: 01049-89-431990 Fax: 01049-89-43199101
Switzerland and Austria
GenRad AG, Drahzug Strasse 18, Postfach 8032, Zurich, Switzerland
Telephone: 010411-422-2420 Fax: 010411-422-2065
Italy
GenRad SPA, Via Fantoli 21/13, 20138 Milano, Italy
Telephone: 01039-2-502951 Fax: 01039-2-5063331
France, Spain and Portugal
GenRad Europe Paris, Succursale de GenRad Europe Limited, 6 Rue Vincent Van Gogh, 93364, Neuilly Plaisance
Cedex, France.
Telephone: 01033-1-49442200 Fax: 01033-1-49442298

Sweden,
Norway, Denmark and Finland
Lagercrantz Kontest AB, Kung Hans vag 3, Box 986, 191 29 Sollentuna, Sweden
Telephone: 01046-8-626-06-20 Fax: 01046-8-754-88-67
Netherlands, Belgium and Luxembourg
Multidata BV, Postbus 137, Bedrijvencentrum "De Baanderije", ParallelwegZuid 33/1,5280 AC Boztel, Netherlands
Telephone: 01031-4116-83775 Fax: 01031-4116-85359
USA and Canada
GenRad Inc, 300 Baker Avenue, Concord, Massachusetts,
1
742, USA.
Telephone: 0101-508-369-4400 Fax: 0101-508-287-2011
Singapore, Taiwan, Hong Kong and Thailand
GenRad Inc, 73 Science Park Drive, Cintech Building #03-04, Singapore, Singapore 0511.
Telephone: 01065-2784400 Fax: 01065-7766422
Australia and New Zealand
Nilsen Instruments, 25-27 Paul Street North, North Ryde, New South Wales 2113, Australia.
Telephone: 01061-2-7362888 Fax: 01061-2-7363005
Japan
Tokyo Electron Limited, 2-30-7 Sumiyoshi-Cho, Fuchu City, Tokyo, Japan 183
Telephone: 01081-423-33-8377 Fax: 01081-423-33-8489
May 1996 9-21

The Aston Martin Lagonda Diagnostic System
Installation Instructions ^=2?
Warranty
The Aston Martin Diagnostic System is covered by a one year warranty. Should any of the electrical components
fail during the warranty period, contact your local GenRad Service Centre for a replacement part. Note that the
warranty does not include physical damage.
Spare Parts
Refer to the Aston Martin Diagnostic System Users Guide for a full parts list. All spare parts should be obtained from
your local GenRad Service Centre who can advise you on current prices.
Servicing and Maintenance
CA UTION: With the exception of those parts listed in this section, there are no user serviceable parts within the
system. All servicing must be carried out by GenRad Service Centres.
Battery Testing.
The NICAD batteries fitted in the PDU are designed to be rechargeable and should normally last through many
recharge cycles. Battery life of three to five years can be expected. The capacity of new batteries improves after
several charging cycles. After extended use, they may require renewing. The following procedure will assist you to
determine when renewal is required. Do not use this procedure with new batteries or with a new PDU.
Testing Procedure

1.
Remove all cables from the PDU.

2.
Switch the PDU on and leave it until it switches off (the power on indicator will extinguish)
3. Connect the PDU to the base station for at least 12 hours charging.

4.
Remove all cables from the PDU, switch on the PDU and start timing.
5. If the PDU switches off in less than 30 minutes, the batteries should be renewed.
Changing the Battery Pack
CAUTION: Always read and follow safety warnings and instructions printed on the equipment. The rechargeable
NICAD batteries fitted to the PDU are of a special type. They must only be substituted by GenRad approved parts.
Do not substitute the batteries with any other type. Always dispose of old batteries in compliance with local
recycling regulations.
Battery Changing Procedure
A spare battery pack kit (0975) is available from your local GenRad Service Centre.
Figure 23. Battery cover screw Figure 24. Battery pack
9-22 May 1996

^?
The Aston Martin Lagonda Diagnostic System
Installation Instructions

1.
Switch off the PDU and remove all cables.

2.
Remove the cover screw (Fig 23) and remove the cover.
3. If damaged, remove the old foam gasket from the cover and replace with the new one supplied.

4.
Note the orientation of the connector. Disconnect the connector and remove the old battery pack.
5. Fit and connect the new battery pack (Fig 24) with the black cable towards the touch screen.
6. Refit the cover and cover screw.
7. Refer to the Battery Charging instructions for recharging times.
Changing the Dust Filter
The electronic module has a dust filter fitted to the underside of the module. Every three months a new filter wil
be supplied. To change the filter, proceed as follows:

1.
Switch off the mains supply and pull out the old filter (Fig 25).

2.
Feed in the new filter with the blue side facing in, pushing it well into the corners of the holder.
3. Switch on the mains supply.
Figure 25. Dust filter replacement Figure 26. Support arm adjustment
Support Arm Adjustment
Periodically the support arm mechanism may require adjustment.

1.
Remove the cross head arm fixing screw.

2.
Using a suitable screwdriver, turn the tensioning screw (Fig 26) anti-clockwise half a
turn.

3. Refit the leg fixing screw and repeat the operation on the opposite side.

4.
Check that the arm tension is enough to support the weight of the PDU without movement.
VIA Carrying Case
The VIA unit (0018) is secured into its carrying case with two fixing screws from the underside of the case. If a new
VIA is required, remove the two fixing screws and lift the VIA from the carrying case. Return only the VIA for
replacement, do not return the carrying case.
May 1996 9-23

The Aston Martin Lagonda Diagnostic System
Installation Instructions E:m3^^?
New CD-ROM Releases
The latestversion of the
Aston
Martin Diagnostic
System
software will besuppliedwiththesystem. When necessary,
new releases of software will be issued by mail to each user of
the
system.
Immediately fit the new CD-ROM to the
disc caddy, retaining the old CD in its protective case as a backup. The new software should be loaded at the next
useofthePDU.
In order to identify the revision level of the software, the version number is included on the disc.

e.g.
DB7 PDU 001 is version 001 of the DB7 PDU software.
Technical Specifications
Electronics Module
Voltage Supply
Frequency
Current Consumption
Operating Temperature
Operating Humidity
PDU and VIA
Voltage Supply
PDU Current Consumption 2.5 Amp
VIA Current Consumption 6.5 Amp
Operating Temperature 0 - 50°C
Operating Humidity
Storage Humidity
Storage Temperature
Weights
100-240 VAC
50-60 Hz

1.0-0.5
Amp
0 -45°C
15 - 85% non-condensing
12 VDC
Base Station
Electronic Module
PDU
Carrying Case
VIA

95%
max non-condensing 12 hours

60%
RH max non-condensing 1000 hours
-20''C to 70°C
20.5 kg (45.2 lb)
3.7 kg
(8.1
6 lb)
3.7 kg
(8.1 6
lb)
2.0 kg (4.4 lb)
4.3 kg (9.48 lb)
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^^
The Aston Martin Lagonda Diagnostic System
Installation Instructions
Statement of Calibration
Product Range Aston Martin Diagnostic System
Product Type Portable Diagnostic Unit
Product Number 3130-001 7
We certify that the above product has been tested and found to conform to the product specification, priorto dispatch
from GenRad. The measurements performed by this equipment are traceable to international measurement
standards. Calibration records, including the date of calibration and the serial numbers of the measurement
instruments are maintained by GenRad and are traceable through the PDU System serial number.

NOTE:
The PDU will not require any periodic adjustment in order to maintain specified measurement accuracy.
Calibration Measurements
Ambient temperature during calibration 20±1 °C.
The test resistances in the table below are applied between the red and black probes. The PDU is set to measure
resistance between these probes using the DMM function. The PDU reading must be between the limits shown.
Test Resistance
10Q
10MQ
PDU Reading Limits
9.84f2-10.16Q
8.22MQ -11.78MQ
The test voltages in the table below are applied between the red and black probes. The PDU is set to measure voltage
between these probes using the DMM function. The PDU reading must be between the limits shown.
Voltage
50mV
lOOmV
160mV
350mV
720mV
1.45V
2.90V
7.25V
14.5V
29V
49V
98V
175V
PDU Reading Limits
48mV - 52mV
98mV - 102mV
157mV -163mV
345mV-355mV
712mV-728mV
1.43V - 1.47V
2.86V-2.94V
7.1 7V - 7.33V
14.35V- 14.65V
28.7V-29.3V
48.5V-49.5V
97.0V-99.0V
173.7V-176.3V
May 1996 9-25