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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 (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
Refer to
Figure 7-18
for this procedure.
CAUTION
Be careful not to damage the center pins of the semirigid cables. Some flexing of the cables
is necessary to remove assemblies but do not over-bend them.
1. Disconnect the power cord.
2. Remove the test port couplers. Refer to
page
7-38.
3. Remove two screws (item
analyzer.
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
Table 7-2 on page
7-50
"Removing and Replacing the A29–A32 Test Port Couplers" on
①
) from the LED board to be removed and remove the LED board from the
7-56.
PNA Series Microwave Network Analyzers
Service Guide N5222-90001
N5221A/22A
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