7-68 Keysight N5227B Service Guide
Repair and Replacement Procedures
Removing and Replacing the Front Panel LED Boards
7-
Removing and Replacing the Front Panel LED Boards
Tools Required
— T-10 TORX driver (torque to 9 in-lb or 1.02 N.m)
— T-20 TORX driver (torque to 21 in-lb or 2.38 N.m)
— 5/16 inch open-end torque wrench (torque to 10 in-lb or 1.13 N.m)
— 1 inch open-end torque wrench (torque to 72 in-lb or 8.15 N.m)
— ESD grounding wrist strap
Removal Procedure
1.
Disconnect the power cord.
2.
Remove the test port couplers. Refer to
A33–A36 Test Port Couplers” on page 7-43
.
3.
Remove two screws from the LED board to be removed and remove the
LED board from the analyzer. For the location of the screws, see
.
Replacement Procedure
1.
Reverse the order of the removal procedure.
2.
Perform the post-repair adjustments, verifications, and performance tests
that pertain to this 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.
