518 
Assembly Replacement Procedures
Midplane Assembly
Midplane Assembly
Removal 
1. Remove the instrument outer case. Refer to the Instrument Outer 
Caseremoval procedure.
2. Remove the rear panel. Refer to the Rear Panelremoval procedure.
3. Remove the top brace and reference bracket. Refer to the Top Brace and 
Reference Bracket removal procedure.
4. Remove the reference assembly. Refer to the Reference Assembly removal 
procedure.
5. Remove the CPU assembly. Refer to the CPU Assembly removal 
procedure.
6. Remove the power supply assembly. Refer to the Power Supply Assembly 
removal procedure.
7. Refer to Figure 14-67. Remove the power supply support bracket (1) by 
removing the two screws (2). 
Figure 14-67  Power Supply Bracket