ZPC-GX31 User Guide
12 H a r d w a r e I n s t a l l a t i o n a n d R e p l a c e m e n t
3.1.2
REMOVING THE KEYTOP (Opening the Computer)
Warning:
♦
If the unit is plugged in, power flows continuously to the unit
whether or not it is actually turned on.
♦
Proper disconnection of power must take place before the unit
is opened for any reason.
NOTE: To protect the system components from static electricity a
grounded wrist strap or equivalent precaution is recommended.
Whenever components are removed from the system they must be
placed in an anti-static bag or on a grounded surface.
1.
First remove the two Phillips screws on the back of the unit and the single
screw in the small plastic cover on the outside of the Keytop to the left of the
PCI slot blanking plate. Turn over the ZPC-GX31 and remove the five
Phillips screws from the base. Bare bone units ship unassembled, so this
step is not necessary if the unit has not yet been populated with components.
2.
Turn the keyboard right side up and lift the center front of the Keytop being
careful of the two wire connections that remain inside. Lift the rear of the
Keytop forward and upward to clear the connectors on the back of the unit.
3.
Before fully removing the Keytop, be sure to disconnect the two cables that
connect the Keytop to the Motherboard. They are:
a. The 20-way Ribbon cable from the keyboard controller PCB CN7 in
the Keytop, connected to header JFP1 on the Motherboard.
b. The 44-way Ribbon cable from the Optical drive in the Keytop
connected to IDE1 on the Motherboard.
4.
Once you have disconnected the cables, lift the Keytop off the computer and
set it aside.
