Tyan Computer B4985F48V8HR (Rackmount) 用户手册

After removing all of those cables, follow these instructions to 
replace the motherboard in your FT48-B4985.

1. Remove the heatsinks and processors if installed.

2. Remove the nine screws securing the motherboard to the 

chassis.

3. Carefully lift the motherboard from the chassis.

NOTE: The motherboard is fitted tightly into the chassis and 
will not lift straight out. You will need to lift one side of the 
board first and slide it out.