Disassembly; Figure 4-33 Remove The Top Cover - Keysight 8990B Service Manual

4 Repair Guide

Disassembly

Use this procedure to disassemble the 8990B.
1 Place the 8990B face down and remove the top cover with the following steps.
0515-2032
(2 screws)
Figure 4-33
116
a Unscrew the 4 screws (0515-0390) on the cover with the 18 in-lbs, T20
Torx screwdriver.
b Unscrew the 2 screws (0515-2032) near the AC inlet with the 5 in-lbs, T10
Torx screwdriver.
c Unscrew the 2 screws (0515-0430) opposite the AC inlet with the 5 in-lbs,
T10 Torx screwdriver.
Remove the top cover
0515-0390 (3 screws)
0515-0390
0515-0430
(2 screws)
Keysight 8990B Service Guide