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User Manual version 2503
LIBRA 120 III (PC620 Intel 815E)
3-
25
3.1.3. MB & Touch Controller Assembly
3.1.3.1. Installing the CPU
The LIBRA III’s motherboard, PC620 can adapt Socket 370
Intel Celeron or Pentium III CPU. Upgrading the CPU can
increase the system performance.
The motherboard provides one 370-pin ZIF socket (Socket
370). The CPU must come with a CPU fan with a heat sink on
to avoid overheating.
To install a CPU or upgrade a new CPU, follow the instructions
below.
1. If there is an existing CPU on the socket, remove the CPU
cooling fan first. Then remove the CPU by pulling the
lever out a little and raising it, then lifting out the existing
CPU from the socket.
2. To insert the CPU into the socket, the notch on the corner
of the CPU (the corner with golden dot) should point
toward the end of the socket lever. If the insertion of the
CPU to the socket is not easy, check whether the CPU pins
correspond with the holes on the socket.
3. After inserting the CPU into the socket, pull the lever down
to make sure the CPU is in place.
4. The CPU cooling fan comes with a 3-pin power wire.
Connect the power wire to the 3-pin power connector on
the motherboard. Tie the power wires together with a
nylon cable tie.
5. There are two silver clips on the CPU socket. Make sure
the cooling CPU fan clips click into place.
CPU socket
FIGURE 3-3
3-pin CPU fan power connector
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