User`s manual

22 PPC-S153 User's Manual
1. Unscrew the screw on the right side for CPU and heat sink cover,
slide leftwrad and detach the cover as shown in Figure 3-3, then you
can find one 370-pin CPU socket and one 144-pin SODIMM socket.
3.3 Installing the Central Processing Unit
(CPU) and SDRAM Memory Module
The panel PC's central processing unit (CPU) can be upgaded to
improve system performnace. The panel PC provides one 370-pin
socket (Socket 370). The CPU must come with an attached heat sink
and CPU fan to prevent overheating. THe panel PC also privides two
144-pin SODIMM sockets which can accept two SDRAM memory
modules up to 1000 MB.
Warning! The CPU may be damaged if operated without a heat
sink and a fan.
Caution! Always disconnect the power cord from your panel PC
when you are working on it. Do not make connections
while the power is on as sensitive electronic compo-
nents can be damaged by the sudden rush of power.
Only experience electornics personnel should open
the panel PC.
FIgure 3-3: Detach the plastic cover of CPU and heat sink