Figure 4-46 Remove The Mainboard - Keysight 8990B Service Manual

4 Repair Guide
0515-0372
Figure 4-46
16 To remove and replace the power supply module, PC motherboard, and scope
130
Remove the mainboard
acquisition board, you must uninstall the support deck by removing the screw
(0515-2032) with 5 in-lbs, T10 Torx screwdriver and the four screws
(0515-0390) with 18 in-lbs, T20 Torx screwdriver as shown in
0515-2143
(5 screws)
Figure
Keysight 8990B Service Guide
4-47.