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Repair and Replacement Procedures
Removing and Replacing the A17 CPU Board Assembly
Removing and Replacing the A17 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
1. Disconnect the power cord.
2. It is not necessary to remove the instrument cover(s) to remove the A17
3. Remove six screws (item
4. Grasp the two ejector handles and rotate them outward toward the sides
5. Slide the A17 CPU board assembly out the rear of the analyzer.
6. If the older 1.6 GHz CPU board is being replaced with the new 2.0 GHz
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests
Keysight N5221A/22A Service Guide
Figure 7-10
for this procedure.
CPU board assembly.
the CPU assembly rear panel and two from the ejector handles.
of the analyzer as shown in the illustration. This will disengage the A17
CPU board assembly from the A15 midplane board.
CPU board, a new A51 solid state drive assembly must also be installed.
Refer to
"Removing and Replacing the A51 Solid State Drive (SSD)" on
page
7-50.
If the N5221/22A already had a 2.0 GHz CPU board installed, remove the
A51 solid state drive assembly from the old CPU board and install it in the
new CPU board. Refer to
Drive (SSD)" on page
that pertain to this removal procedure. Refer to
①
) from the A17 CPU board assembly; four from
"Removing and Replacing the A51 Solid State
7-50.
Table 7-2 on page
7-60.
7-25
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