Removing And Replacing The A10, A11, And A12 Boards  (For Analyzers With Serial Numbers Prefixed My/Sg/Us5144 And Below.) - Keysight N5264A Service Manual

Repair and Replacement Procedures
Removing and Replacing the A10, A11, and A12 Boards (For analyzers with serial
numbers prefixed MY/SG/US5144 and below.)
Removing and Replacing the A10, A11, and A12 Boards 
(For analyzers with serial numbers prefixed MY/SG/US5144 and
below.)
In February 2012, the N5264A analyzer underwent significant hardware
changes. These changes included a redesigned Signal Processing ADC
Module (SPAM) board, left side inner bracket, and right side inner bracket.
It is very important that this redesigned hardware be used only with
analyzer serial numbers prefixed MY/SG/US5204 and above. If you have an
analyzer whose serial number is prefixed MY/SG/US5144 and below, you
must use the previous version of hardware rather than the redesigned
hardware - refer to
Be very careful to use the appropriate hardware in your analyzer. Using the
wrong hardware can ruin analyzer components, resulting in additional
customer costs.
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)
— ESD grounding wrist strap
Removal Procedure
Refer to
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to
3. Remove all cables connected to the top of the board to be removed. Note
4. Lift the two extractors (item
5. Before removing the board completely, check the bottom of the board for
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Remember to connect any necessary cables to the bottom of the board
3. Perform the post-repair adjustments, verifications, and performance tests
Keysight N5264A Service Guide
"Top Assemblies, All Options" on page
Figure 7-6
for this procedure.
page 7-5.
the location of each cable for reinstallation.
board.
any attached cables and, if any, disconnect them.
before reinstalling it.
that pertain to this removal procedure. Refer to
"Removing the Covers" on
①
), (one at each end of the board), and lift the
Table 7-2 on page
6-11.
7-42.
7-13