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Summary of Contents for BRUEL & KJAER 2825
- Page 1 Technical Documentation Acquistion Front-end Type 2825 Service Manual Brüel&Kjær WORLD HEADQUARTERS: DK-2850 Nærum • Denmark • Telephone: +4545 80 0500 •Telex: 37316 bruka dk • Fax: +4545 80 1405 • e-mail: info@bk.dk BI 5033 –12e...
- Page 2 0 − 2 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual Proprietary: Authorized Brüel & Kjær Personnel Only...
- Page 3 Acquisition Front-end Type 2825 Service Manual Valid from serial number 1 904 567 April 1997 Brüel & Kjær Acquisition Front-end Type 2825 BI 5033 –12e Service Manual...
- Page 4 All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from Brüel & Kjær Sound and Vibration Measurement A/S, Nærum, Denmark. 0 − 2 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
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Page 5: Table Of Contents
........................5 – 2 Cooling fan ........................5 – 2 6. Routine Maintenance ....................6 – 1 Routine Maintenance ....................6 – 2 Cleaning of Air-filter ....................6 – 2 0 − 3 BI 5033 –12e Acquisition Front-end Type 2825 Service Manual... - Page 6 Removing the Backplane ..................7 – 3 Mains Switch and Fuseholder ..................7 – 3 Fan Assembly UH 1022....................7 – 4 Mechanical Parts List ....................7 – 4 0 − 4 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
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Page 7: General Information
Chapter 1 General Information 1 − 1 BI 5033 –12e Acquisition Front-end Type 2825 Service Manual... -
Page 8: Introduction
Chapter 1 — General Information Introduction Introduction Acquisition Front-end Type 2825 is a frame for housing modules for use in Type 3550, Type 3551 and Type 3560 (PULSE) systems. Fig.1.1 Type 2825 Edition Number If any major changes are made to the instrument and/or Service Manual, a new edition of the Service Manual will be released. -
Page 9: Safety
Chapter 7 more details. The ZG 0391 power supply in Type 2825 is an FRP. To assure economical reuse, it is important that no attempt is made to repair it locally. If such an attempt is made, the price of an exchange FRP is 100% the price of a new one. - Page 10 Chapter 1 — General Information Service Policy and FRP Number 1 − 4 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
- Page 11 Chapter 2 Service Note 2 − 1 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual...
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Page 12: On-Line Editions Of The Service Manual
From time to time some minor changes may be made to improve the performance and serviceability of Type 2825. All information concerning these changes, or any other changes to the service manual, are included in the latest version of the on- line source document. -
Page 13: Checking Procedure
Chapter 3 Checking Procedure 3 − 1 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual... - Page 14 The checking procedure is performed on a fully assembled Type 2825 (including those modules normally inserted by the user). The procedure enables you to verify that Type 2825 meets specifications. In the case of a fault appearing in Type 2825, refer to Chapter 4 of this manual.
- Page 15 Chapter 4 Adjustment Procedure 4− 1 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
- Page 16 Fig.4.1 Power-supply board ZG 0391 3. Turn on the power and set the voltages on ZG 0391 as shown in Table 4.1, working from the top of the table to the bottom. 4− 2 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
- Page 17 +5.0 J9 pin 3 – 17.0 – 15.0 +15.0 J9 pin 2 +200.0 J9 pin 5 + 28 +5.0 Table 4.1 Measuring points, voltages and adjustment points on ZG0391. 4− 3 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
- Page 18 4− 4 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
- Page 19 Chapter 5 Troubleshooting 5 − 1 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual...
- Page 20 Procedure 1. Switch Power Off. 2. Remove all modules from Type 2825. 3. Switch Power On, and check if the voltages are correct according to Chapter If the voltages are correct, the problem must be on one of the modules. Re-insert them one by one until you find the one that load the Power Supply.
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Page 21: Routine Maintenance
Chapter 6 Routine Maintenance 6 − 1 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual... -
Page 22: Cleaning Of Air-Filter
6.1.1 Cleaning of Air-filter It is necessary to clean the air-filter at regular intervals in order to let enough air pass freely through Type 2825. To do this: 1. Unscrew the 4 screws holding the filter bezel in place 2. Remove the filter 3. -
Page 23: Mechanical Parts
Chapter 7 Mechanical Parts 7 − 1 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual... -
Page 24: Dismantling Procedure
AQ 1684 to back panel 970181e Fig.7.1 Back-view of Type 2825 and side-view of ZG 0391 1. Before opening Type 2825, remove the mains cable 2. Unscrew the 12 screws holding the back panel 3. Unscrew the 9 screws holding the power-supply in place 4. -
Page 25: Removing The Backplane
4. Unscrew the screws holding the backplane to the back panel 5. Remove the backplane Mains Switch and Fuseholder YK 2306 OA 0076 YM 0409 OA 0077 YK 2306 GU 1804 970178e Fig.7.2 Mains switch and fuseholder 7 − 3 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual... -
Page 26: Fan Assembly Uh 1022
AQ 1684* Mains voltage selector with transformer cable AQ 1685 Low-power cable for backplane AQ 1689 High-power cable for backplane DF 7050 Ground cable Table 7.1 Mechanical parts list 7− 4 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual... - Page 27 YK 2306 Screw YM 0409 YO 0412 Washer YO 0452 Washer YS 8421 Filterplate screw TN 0182* Transformer ZH 0444 Assembled backplane Table 7.1 (continued) Mechanical parts list 7 − 5 BI 5033 – 12e Acquisition Front-end Type 2825 Service Manual...
- Page 28 7− 6 Acquisition Front-end Type 2825 Brüel & Kjær Service Manual...
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