Figure 4-9 Remove The T20 Screws From The Upper Rear Cover; Figure 4-10 Remove The T20 Screws On The Bottom Rear Cover - Keysight 8990B Service Manual

4 Repair Guide
Figure 4-9
5 Remove the two T20 screws on the bottom rear cover of the 8990B as shown
Figure 4-10
98
Remove the T20 screws from the upper rear cover
in Figure 4-10.
Remove the T20 screws on the bottom rear cover
Keysight 8990B Service Guide