Rohde & Schwarz R&S SMU200A, Service Manual

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Module Replacement R&S SMU200A
1007.9845.82 3.54 E-6
Replacing the Front Module Controller A201
(See chapter 5, spare parts list 1141.2057.01, parts list and drawing 1141.2005.01)
The front module controller is mounted behind the front panel.
Removing the Front Module Controller
Remove the front panel.
Unscrew the 11 screws with washers (1148.3059) of the front module controller board and take out
the front module controller as follows:
Note: The front module controller is tightly inserted on the motherboard. It can be pulled off towards
the front using the slots at the bottom of the mounting plate. Carefully push the board towards
the front step by step using a flat, blunt tool.
Caution:
Do not insert the tool too far into the slots and press only against the PC board!
To pull out the board, pry off at all slots alternately.
The board must not be bent!
Fig. 3-2 Removing the front module controller
Installing the New Front Module Controller
Carefully plug the new front module controller (A201) to the motherboard (A100) and fasten it in
place using the 10 screws with washers (1148.3059).
Carefully plug the cable connectors to the controller board, taking care not to reverse the polarities.
Install the front panel.