Chapter 13 257
Assembly Replacement Procedures
Motherboard Assembly
Motherboard Assembly
Removal
1. Remove the instrument outer case. Refer to the Instrument Outer Case removal
procedure.
2. Remove the rear panel. Refer to the Rear Panel removal 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 L.O. 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. Remove the DIF assembly. Refer to the DIF Assembly removal procedure.
8. Remove the RF assembly. Refer to the RF Assembly removal procedure.
9. Remove the Midplane assembly. Refer to the Midplane Assembly removal
procedure.
10. Remove the Front Frame Assembly. Refer to the Front Frame Assembly
removal procedure.
11. Remove the fan assembly. Refer to the Fan Assembly removal procedure.
12. Refer to Figure 13-22 and Figure 13-23. Remove the midplane bracket (1 ) by
removing the eight screws (2) (two on each side and four on the bottom).
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