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Assembly Replacement Procedures
Reference Assembly
Figure 14-45 Reference Support Bracket Removal
8. The reference assembly can be removed from the chassis by leveraging up
on the ejector and pulling the board out on the other side.
Replacement
1. Slide the reference assembly into the slot at the rear of the instrument and
push on the assembly to mate the connectors to the midplane assembly.
Secure with the ejector.
2. If the serial prefix is ≥ MY/SG/US5233 or Option B85, B1A, or B1X is
installed, refer to Figure 14-45. Secure the reference support bracket (2)
to the Reference assembly (1) using a pan-head screw (3) (0515-0372).
3. Refer to Figure 14-40, Figure 14-41, Figure 14-42, Figure 14-43, or Figure
14-44 as appropriate. Reconnect the cables to the correct locations.
Torque the semi-rigid coax cables to 10 inch-pounds.
4. Replace the rear panel. Refer to the Rear Panelreplacement procedure.
5. Replace the reference bracket (serial prefix < MY/SG/US5233 or secure
the A16 Reference assembly to the top brace (serial prefix ≥
MY/SG/US5233). Refer to the Top Brace and Reference Bracket
replacement procedure.
6. Replace the instrument outer case. Refer to the Instrument Outer
Casereplacement procedure.
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