Removing And Replacing The Front Panel Led Boards - Keysight Technologies N5247B Service Manual

2-port and 4-port pna-x microwave network analyzer

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Table of Contents

Repair and Replacement Procedures

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

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 from the LED board to be removed and remove the

Replacement Procedure

1. Reverse the order of the removal procedure.

2. Perform the post-repair adjustments, verifications, and performance tests

A33–A36 Test Port Couplers" on page

LED board from the analyzer. For the location of the screws, see

6-71 on page

that pertain to this removal procedure. Refer to

"Removing and Replacing the

Table 7-2 on page

Keysight N5247B Service Guide