R&S SM300
Instrument Assembly for Board and Module Exchange
Version 04
49
Service Manual SM300: 1147.1652.00
Instrument Part No SM300: 1147.1498.03
1.3.3.14
Backplane
Removing backplane
1.
Remove both protectors (see section 1.3.3.1).
2.
Remove handle (see section 1.3.3.2).
3.
Remove rear frame and both cases (see section 1.3.3.3).
4.
Remove carrier lid (see section 1.3.3.5).
5.
Remove duoblind (see section 1.3.3.8).
6.
Remove control PC module (see section 1.3.3.12).
7.
Remove power supply (see section 1.3.3.13).
8.
Disconnect cables for spinwheel, keyboard, display and fan from
backplane (see Figure 1-36).
9.
Undo 10 screws (see Figure 1-37).
10.
Push backplane diagonally toward bottom (see Figure 1-38) and
position it horizontally in carrier unit (see Figure 1-39).
11.
Lift it diagonally and remove by lifting toward the top of the instrument
(see Figure 1-40).
Caution
When inserting the backplane, make sure that it does not damage on the
press-in nuts in the carrier unit.
12.
Disconnect both clamps from backplane.
Figure 1-36
Figure 1-37
Figure 1-38
Figure 1-39
