R&S SM300 - Fan in Aircase Unit

Instrument Assembly for Board and Module Exchange R&S SM300
Version 04 44
Service Manual SM300: 1147.1652.00 Instrument Part No SM300: 1147.1498.03
Figure 1-24
Figure 1-25
1.3.3.10 Fan in Aircase Unit
Removing the fan
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 front unit (see section
1.3.3.7).
6. Remove duoblind (see section
1.3.3.8).
7. Remove aircase unit (see section
1.3.3.9).
8. Undo 4 fan screws and remove with tweezers (see
Figure 1-26).
9. Ply cable latch cover off. Ply sides of latch cover outward with tweezers
and then pull cable latch cover toward rear (see
Figure 1-28).
10. Route fan cable through opening in front unit and push fan out from
aircase unit toward side (see
Figure 1-27).
Figure 1-26 Figure 1-27