Rohde & Schwarz SR8100 - Page 177

Chapter 8 Service
5300.9677.72 - 8.8 - EN-4
Fig. 3 Disconnecting connector
3. Unscrew the fuse block using a Torx screwdriver (size 10).
Fig. 4 Unscrewing fuse block
4. Slide the faulty fan upward out of the mounting holes and pull the fan out.