526 
Assembly Replacement Procedures
Fan Assembly
Fan Assembly
Removal 
1. Remove the instrument outer case. Refer to the Instrument Outer 
Caseremoval procedure.
2. Remove the top brace. Refer to the Top Brace and Reference Bracket 
removal procedure.
3. Remove the Front Frame Assembly. Refer to the Front Frame Assembly 
removal procedure.
4. Refer to Figure 14-73. Remove the eight screws (1) that attach the fan 
assembly to the chassis.
Figure 14-73  Fan Assembly Removal
5. Unplug the fan wires from the motherboard. The fan assembly can now be 
lifted from the chassis.