Module Replacement R&S FSH
1145.5973.82 3.16 E-11
Replacing the mainboard
The mainboard contains information about the instrument like the serial number. Special tools are
n
ecessary to update this information after replacement of the mainboard. Therefore the exchange of the
mainboard is possible in a R&S Service Center, only.
Open the instrument.
Remove the battery.
Loosen the two (S5) screws.
Disconnect the connectors (X3), (X4), (X5), (X7), (X8) and (X9).
Loosen the three screws (S11) and the remove the board.
Note that the two lower screws are isolated.
Remove the distance screw (S12)
Mount the new board and fasten (S11) and (S12).
Connect connectors (X3), (X4), (X5), (X7), (X8) and (X9).
Mount the Battery.
Close the instrument.
Perform the manual adjustment.
Refer to Chapter 2 “Adjustment”.
X9
X8
X7
X5
X3
X7
X8
X1
X4
S11
S11
S5
S5
S11
S12
Fig. 3-11 Replacing the Main Board
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