R&S SMU200A Module Replacement
1007.9845.82 3.53 E-6
Installing the New Module
Carefully mount the DAC board A580 onto A340 in the reverse order and install it again.
Perform internal and external adjustments according to chapter 2, “Adjustments”.
Replacing the Power Supply A400
(See chapter 5, spare parts list 1141.2057.01, parts list and drawing 1141.2005.01)
Note: If Pos. A300 (Second Standard Synthesis) is fitted, it has to be removed prior to replacing the
power supply.
Removing the Power Supply
Remove instrument cover 1.
Unplug power input cables and interface plug at the sides of the power supply.
Unscrew the four screws at the rear of the power supply.
Now the power supply can be lifted to disconnect the DC lines.
Unplug DC connection X237. Unscrew the 3.6 V, 5.2 V and ground cables.
The power supply can now be removed.
Installing a New Power Supply
Install the new power supply in the reverse order. To avoid mistakes, be careful when connecting
the DC lines.
Reinstall instrument cover 1.
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