Keysight Technologies N5244/5B Service Manual page 627

Repair and Replacement Procedures
Removing and Replacing the Front Panel LED Boards
Removing and Replacing the Front Panel LED Boards
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)
— 1 inch open-end torque wrench (set to 72 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to
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 test port couplers. Refer to
3. Remove two screws (item
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests
Keysight N5244B/45B Service Guide
Figure 7-24 for this procedure.
A33–A36 Test Port Couplers" on page
remove the LED board from the analyzer.
that pertain to this removal procedure. Refer to
"Removing and Replacing the
7-53.

) from the LED board to be removed and
Table 7-2 on page 7-93.
7-87