Acquisition Front-end Type 2825
Service Manual
Brüel & Kjær
4− 2
4.1 Introduction
The purpose of this procedure is to realign the power supply ZG0391 if it does not
fulfil the specifications stated in Chapter 3.
4.2 Procedure
Warning: The adjustment procedure must only be done by trained service personnel
as hazardous voltages are exposed.
1. Remove the power supply as described in Chapter 7
2. With the power supply on the workbench, re-connect all the cables except Taxi-
cable AQ1685 and Fan-cable AQ1682 (see Fig.4.1).
3. Turn on the power and set the voltages on ZG0391 as shown in Table 4.1,
working from the top of the table to the bottom.
Fig.4.1 Power-supply board ZG0391
970180e
AQ 1685
AQ 1682
Fan cable
AQ 1686
AQ 1636
AQ 1567
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