Keysight Technologies N5244/5B Service Manual page 625

Repair and Replacement Procedures
Removing and Replacing the Rear Panel
Removing and Replacing the Rear Panel
Tools Required
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— 5/16 inch nutsetter (set to 10 in-lb)
— 5/16 inch nutsetter (set to 21 in-lb)
— 5/8 inch nutsetter (set to 21 in-lb)
— 9/32 inch nutsetter (set to 9 in-lb)
— 3/16 inch nutsetter (set to 6 in-lb)
— 9/16 inch nutsetter (set to 21 in-lb)
— 9 mm nutsetter (set to 21 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 the A20 power supply assembly. Refer to
4. Remove the A21 CPU board assembly. Refer to
5. If installed, remove all jumper cables (item
6. Remove the 50 ohm load(s) (item
7. Remove the connector hardware (item
8. Remove the connector hardware (item
9. Remove the 13 screws (item
10. Slide the rear panel over the cable connectors and off of the analyzer.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests
Keysight N5244B/45B Service Guide
Figure 7-43 for this procedure.
page 7-8.
Replacing the A20 Power Supply Assembly" on page
the A21 CPU Board Assembly" on page
connectors. The hardware is not the same on each connector so note
which hardware goes with which connector.
connectors. The hardware is not the same on each connector so note
which hardware goes with which connector.
that pertain to this removal procedure. Refer to
"Removing the Covers" on
"Removing and
"Removing and Replacing
7-34.

) from the rear panel.

).

) from each of the five multi-pin

) from each of the RF

) that attach the rear panel to the chassis.
Table 7-2 on page
7-32.
7-93.
7-85