Replacement Procedure - Keysight Technologies X Series Service Manual

Assembly Replacement
A3 RF Assembly (N5166B, N5172B, and N5182B)
10.For Option 1EM instruments, skip to
The RF Connector can be easily damaged. Use extreme caution when
disconnecting and reconnecting the RF connector bracket from and to the
instrument chassis.
11.Refer to
12.Refer to
13.Repeat
14.Remove the A3 RF assembly as shown in

Replacement Procedure

1. Reverse the order of the removal procedure.
When plugging in the A3 RF assembly into the A2 board, it is important to have all
boards loose in order to ensure proper connector mating. Follow these steps:
2. Recommended torque for Front Panel screws is 21 in-lbs. Recommended
3. Recommended torque for all BNC connectors is 21 in–lbs.
4. See
Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
d. "Front-Panel" on page 342
refer to Figure 15-9. Using the T-10 driver, remove the 3 screws (1) that
connect the RF In connector to the chassis.
Figure 15-8. Using the T-10 driver, remove the 10 screws (1) that
connect the A3 RF assembly to the chassis.
Figure 15-10. Place the tip of a medium common screwdriver into
one of the three pry slots on the A3 RF assembly and twist the screwdriver
to release the board from the connector pins.
step 11 with the other two pry slots.
a. It will be necessary to loosen the screws attaching the A2 Vector BBG
assembly (and the A7 Real Time BBG assembly if Option 660 is present) to
the chassis before plugging in the A3 RF assembly.
Figure 15-14, "Loosen A2/A7 Boards screws."
b. Refer to
Real Time BBG assembly screws (1) and the A2 Vector BBG assembly
screws (2). After the A3 RF assembly is plugged into the A2 board, tighten
all the screws. Torque to 9 in-lbs.
torque for all other screws is 9 in–lbs.
Chapter 16, "Pre and Post-Repair Procedures"
Repair Procedures" outlined for the replacement of this assembly.
step 10. For all other instruments,
Figure 15-11.
and perform the
Loosen the A7
"Post
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