360 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Assembly Replacement
A3 RF Assembly (N5173B, N5183B)
A3 RF Assembly (N5173B, N5183B)
Tools Required
— T-10 driver
— 5/16” open-ended wrench
—Flat-head screwdriver
Removal Procedure
1. Before replacing the A3 RF assembly see Chapter 16, “Pre and Post-Repair
Procedures” and perform the “Pre Repair Procedures” outlined for this
assembly.
2. Disconnect the power cord.
3. Remove the covers from the signal generator. Refer to “Outer Cover” on
page 336, “Inner Top Cover” on page 338, and “Inner Bottom Cover” on
page 340.
4. Place the signal generator flat with the A7 Micro-Deck assembly facing up
and the rear panel facing you.
5. Referring to Figure 15-15, using the 5/16” open-ended wrench,
disconnect the following cables:
W20 from A3 J2002 and A7A3 J3
W21 from A3 J2004 and A7A2 J1
W22 from A3 J7 and A7A1 J11
W23 from A3 J6000 and A7A1 J18
6. Place the signal generator flat with the A3 RF assembly facing up.
7. Refer to Figure 15-18. Remove ribbon cable W1.
8. Remove the following assemblies, in the order listed:
a. “A5 CPU” on page 369
b. “Rear Panel (N5173B/83B)” on page 408
Pry slots have been provided on both sides of the A3 RF assembly to aid in
removing the board.
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