AMX AXD-MCA, Instruction Manual

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Color Active-Matrix LCD Mini-Touch Panels Replacing the Lithium Batteries 145
Replacing the Lithium Batteries
Overview
There are two lithium batteries (Figure 212) on the mini-touch panel circuit card, with
a life of approximately 5 years. They protect stored commands and pages against
power loss. The batteries are not used when DC power is supplied to the Mini-Touch
panel. You should write down the replacement date on a sticker or label by adding 5
years to the date of installation, and then attach it to the Mini-Touch panel for future
reference.
Lithium battery
Socket
Before replacing the lithium batteries, make sure you have a current copy of the
pages stored in the touch panel. This will avoid any inadvertent loss of data or a
service outage. To replace the lithium batteries, you will need a Phillips screwdriver
and a non-conducting flat-blade tool to slip under each battery to pry it up and out of
the socket.
AXT-MCA (/PB) and AXT-MCV (/PB)
To replace the lithium batteries in the AXT-MCA (/PB) and AXT-MCV (/PB):
1.
Discharge the static electricity from your body by touching a grounded object.
2.
Remove the mini-XLR AXlink connector, and optional RCA video connector
from the rear side of the mini-touch panel.
3.
Flip the mini-touch panel face down onto a soft cloth, and remove the four Phil-
lips-head screws from the bottom panel. Then, gently remove the panel.
Figure 212
Lithium battery and socket
Caution
Static electricity can damage
electronic circuitry. Before
removing the touch panel cir-
cuit card from the enclosure,
discharge any accumulated
static electricity from your
body and flat-blade tool by
touching a grounded metal
object.