Module Replacement R&S SMU200A
1007.9845.82 3.60 E-6
Installing the New Fan
Mount the new fan.
Connect the fan cable at the motherboard.
Note: Please note the direction of the airflow printed on the fan. The fan must blow the cold air into
the instrument.
Make sure to route the cable so that it cannot get into the fan.
Reinstall instrument cover 1.
Replacing the BNC Board Rear A120
(See chapter 5, spare parts list 1141.2057.01 A120, parts list and drawing 1141.2005.01)
The module is fitted at the rear panel.
Removing the BNC Board Rear
Remove instrument cover 1.
Loosen the nuts of the 7 BNC connectors at the rear panel.
Pull out board towards the top of the instrument and disconnect cables.
Installing the New BNC Board Rear A120
Install the new module in reverse order.
Reinstall instrument cover 1.
Replacing the Fan E3
(See chapter 5, spare parts list 1141.2057.01 E3, parts list and drawing 1141.2105.01)
This fan is fitted behind the rear panel.
Removing the Fan E3
Remove instrument cover 1.
Remove mounting plate (1141.2786) with fan (E3) from the transverse partition at the rear by
loosening the two screws (1148.2781).
Disconnect the fan cable to the motherboard.
Remove the fan (E3) by loosening the four screws (0041.8218) at the mounting plate 1141.2786.
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