Replacement Procedure - Keysight N5171B EXG Service Manual

Assembly Replacement
A3 RF Assembly
9. 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.
10.Refer to
11.Refer to
12.Repeat
13.Remove the A3 RF assembly as shown in

Replacement Procedure

1. Reverse the order of the removal procedure.
For N5172B, or 82B models only.
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. Perform the post-repair service procedure and performance tests that
184
d. "Front-Panel" (see
refer to Figure 3-12. Using the T-10 driver, remove the 3 screws (1) that
connect the RF In connector to the chassis.
Figure 3-13. Using the T-10 driver, remove the 10 screws (1) that
connect the A3 RF assembly to the chassis.
Figure 3-14 and
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.
b. Refer to Figure 3-16, "Loosen A2/A7 Boards screws,"
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.
pertain to this replacement procedure, see
Procedures and Operational Performance
)
page 174
step 10. For all other instruments,
Figure 3-15. Place the tip of a medium common
Figure
Chapter 4, "Post-Repair
Verification".
Keysight X-Series Signal Generators Service Guide
3-15.
Loosen the A7 Real