http://www.tyan.com
26
Chapter 2
Board Installation
Align the CPU with the CPU retention module. Make sure the heat sink is lined
up with the heat sink mount bracket. If you put the CPU in the wrong way, you
may damage the CPU, the motherboard, and/or the CPU socket. Slowly press
down on the CPU module until the CPU locks into place. You will hear a clicking
noise when the CPU is locked securely into the module.
The heat sink lock (Figure 2-13) has four
notches which will correspond to the four
pins on the heat sink mounting bracket.
Gently slide the lock between the heat
sink and the heat sink mounting bracket
until both sides of the lock are firmly
secured. A clicking sound will be heard when the lock is securely fastened to the
heat sink mounting bracket. To remove the lock from the heat sink mounting
bracket, gently press the ends of the locks inward and pull.
Lock the heat sink mount to the board by inserting the two
mounting locks (Figure 2-14) into the pins of the heat sink
mounting bracket which are now below the mainboard.
There will be a click when the locks are securely fastened.
Removing the CPU.
To remove the CPU, move the locks to the center of the
CPU. A click will be heard when the CPU has been unlocked. Gently pull up on
the CPU, taking care not to bend the motherboard or the CPU retention module.
To remove the lock from the retention module, gently press the ends of the locks
inward and pull.
Installing SECC2 CPUs
The major physical difference between original Pentium II’s (SEC)and new
Pentium II/P-III (SECC-2) is the plastic CPU enclosure. As Figure 2-15 indicates,
the plastic CPU enclosure covers the entire CPU card of regular Pentium II’s. On
the other hand, the plastic CPU enclosure covers only the side faces of the
SECC2 Pentium II card.
Due to the physical differences in the SECC2 CPU, installing the retention
modules requires a different technique than the ones previously discussed.
Figure 2-13
Figure 2-14
