March Products 120 III (PC620) user manual 3.MB & Touch Controller Assembly

User Manual version 2503

3.1.3.MB & Touch Controller Assembly

3.1.3.1.Installing the CPU

The LIBRA III’s motherboard, PC620 can adapt Socket 370 Intelâ Celeronâ 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.

3-pin CPU fan power connector

CPU socket

FIGURE 3-3

LIBRA 120 III (PC620 Intel 815E) 3-25

PDF created with pdfFactory trial version www.pdffactory.com