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Keysight N5224B/25B Service Guide 7-29
Repair and Replacement Procedures
Removing and Replacing the A21 CPU Board Assembly
Removing and Replacing the A21 CPU Board Assembly
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)
— ESD grounding wrist strap
Removal Procedure
Refer to
for this procedure.
1.
Disconnect the power cord.
2.
It is
not
necessary to remove the instrument cover(s) to remove the A21
CPU board assembly.
3.
Remove six screws (item
) from the A21 CPU board assembly - four from
the CPU assembly rear panel and two from the ejector handles.
4.
Grasp the two ejector handles and rotate them outward toward the sides
of the analyzer as shown in the illustration. This will disengage the A21
CPU board assembly from the A19 midplane board.
5.
Slide the A21 CPU board assembly out the rear of the analyzer.
6.
If the A21 CPU board assembly is being replaced, you must first remove
the A55 solid state drive for reinstallation in the new A21 CPU board
“Removing and Replacing the A55 Solid State Drive
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
.
Summary of Contents for N5224B
Page 3: ...3...
Page 4: ...4...
Page 12: ...12 Keysight N5224B 25B Service Guide Contents...
Page 84: ...3 52 Keysight N5224B 25B Service Guide Tests and Adjustments Adjustments 3...
Page 145: ...Keysight N5224B 25B Service Guide 4 61 Troubleshooting This page intentionally left blank...
Page 220: ...5 58 Keysight N5224B 25B Service Guide Theory of Operation Power Supply Group Operation 5...
Page 490: ...6 270 Keysight N5224B 25B Service Guide Replaceable Parts Replaceable Parts Listings 6...
Page 613: ...Installation Note Xxxxx xxxxx 3...