Removing And Replacing The Front Panel Power Switch Board - Keysight Technologies N5290/1A PNA Series Service Manual

Repair and Replacement Procedures

Removing and Replacing the Front Panel Power Switch Board

Removing and Replacing the Front Panel Power Switch Board
Tools Required
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— 5/16 inch open-end torque wrench (set to 10 in-lb)
— ESD grounding wrist strap
Removal Procedure
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables is necessary to remove the assembly. However, do not
over-bend the semirigid cables.
1. Disconnect the power cord.
2. Remove the outer covers. Refer to
3. Remove the front panel and subpanel. Refer to
4. Disconnect the power switch cable from the power switch board. Refer to
5. Remove the two screws from the power switch board and remove the LED
6. Remove the power switch board from the power switch board base tabs.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests
7-28
the Front Panel and Subpanel Assemblies" on page
Assembly, Front Side, All Options" on page
Assembly, Back Side, All Options" on page
Figure 6-8 on page 6-16
board from the test set. For the location of the screws, see
page 6-16.
that pertain to this removal procedure. Refer to
"Removing the Cover" on page
6-9, and
6-13.
and to Figure 6-9 on page
Keysight N5290/1A Service Guide
7-8.
"Removing and Replacing
7-10, "Front Panel
"Front Panel
6-17.
Figure 6-8 on
Table 7-2 on page 7-36.