Safety Precautions; Installing The Cpu; Removing A Cpu - Advantech PCM-4822 User Manual

Safety precautions

Warning! Always completely disconnect the power cord from
Caution!

Installing the CPU

The PCM-4822 all-in-one SBC supports most 486 CPUs. The
system's performance depends on the CPU you choose. You can
install or upgrade the CPU in the board's PGA socket by following
the procedures outlined below. If your system has an existing CPU,
you need to remove it before installing the new CPU.

Removing a CPU

1. Disconnect power and unplug all connections to the board.
2. Lift the CPU out of the PGA socket. The old chip may be
difficult to remove. You may find spray chip lubricant, designed
for pin-grid-array (PGA) devices, and a chip puller helpful.
These are available at electronics hobbyists' supply stores.
your board whenever you are working on it. Do not
make connections while the power is on because
sensitive electronic components can be damaged
by the sudden rush of power.
Always ground yourself to remove any static
charge before touching the board. Modern elec-
tronic devices are very sensitive to static electric
charges. Use a grounding wrist strap at all times.
Place all electronic components on a static-
dissipative surface or in a static-shielded bag
when they are not in the chassis.
Chapter 2 Installation 13