NAR-5620 Series
User
’
s
Manual
6
the board by its edges only; do not touch its components, peripheral chips, memory modules or
gold contacts.
When handling processor chips or memory modules, avoid touching their pins or gold edge
fingers. Restore the communications appliance system board and peripherals back into the
antistatic bag when they are not in use or not installed in the chassis.
Some circuitry on the system board can continue operating even though the power is switched
off. Under no circumstances should the Lithium battery cell used to power the real-time clock be
allowed to be shorted. The battery cell may heat up under these conditions and present a burn
hazard.
WARNING!
1.
"CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE
ONLY WITH SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER.
DI
SCARD
USED
BATTERI
ES
ACCORDI
NG
TO
THE
MANUFACTURER’
S
I
NSTRUCTI
ONS"
2.
This guide is for technically qualified personnel who have experience installing and
configuring system boards. Disconnect the system board power supply from its power
source
before
you
connect/disconnect
cables
or
install/remove
any system
board
components. Failure to do this can result in personnel injury or equipment damage.
3.
Avoid short-circuiting the lithium battery; this can cause it to superheat and cause burns if
touched.
4.
Do not operate the processor without a thermal solution. Damage to the processor can occur
in seconds.
5.
Do not block air vents. Minimum 1/2-inch clearance required.
2.3
Hardware Configuration Setting
2.3.1 NAR-5620 System Board Jumper
In general, jumpers on NAR-5620 system board are used to select options for certain
features. Some of the jumpers are configurable for system enhancement. The others are
for testing purpose only and should not be altered. To select any option, cover the jumper
cap over (Short) or remove (NC) it from the jumper pins according to the following
i
nst
r
uct
i
ons.
Her
e
NC
st
ands
f
or
“
Not
Connect
ed”
.
Location of Jumpers
