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This video has been created to help the customer when questions come up related to
older assemblies and newer assemblies. This has to do with the 662X Multiple Output
Linear System DC supplies.
In the past we’ve had an assembly, as shown below, with a connector for the interface
connections, and there’s been questions that have come up. “What do I do when I
have an older instrument and need to replace it with a newer board?” as shown. The old
printed circuit board has a four-pin connector, 1251-5385. It’s in Circuit Reference P302.
To connect to this assembly, the cable, as shown in this picture, should be plugged in.
However, the new assembly, as shown here, there is no connector because when the instrument
was assembled we didn’t put the connector in. The intent is to have the customer take
the connector from the old board, or they can purchase a new connector through SPO,
Support Parts Organization, and insert that part in the board.
When doing this, pay particular attention to the way the connector goes into the board.
The back side of this connector, as shown, should be rotated and should be inserted where
this part of the figure shows. Also, Pin 1 is marked on the board, and when the part
is replaced – and it’s Circuit Reference P302B – you take particular cautions on
ESD, electrostatic discharge, in how the assembly is handled.
From form, fit, and function point of view, the new assembly, when the connector is placed
in the board, is form, fit, and function the same. So you’ve got two options. You can
take the P302 out of the defective board and put it into the new board or purchase the
1251-5385 and place it into the board. There’ll be some soldering required, but that soldering,
for a person who knows how to do it, should be able to do that.
There’s one other tip that I can provide you. If the connector is placed in the right
order, and a customer would like, as long as they make sure that they put the wires
into the board in the correct positioning, you don’t even need a connector. You can
just solder it right into the board. But it’s particularly important to make sure that the
wires get connected to where they’re supposed to be on the board.
I hope this video will help. If the component 1251-5385 needs to be purchased, you can purchase
it through Agilent, or you can buy the Molex Part No. 22-29-2041. I hope this
helps in the future and should answer a lot of your questions.
Thanks very much.