Digi-Star SW3300 - Manual (Page 21)

Installation & Operation
D3746 21
STOCK WEIGH 10K/14K WITH J-BOX
Your Indicator is probably
defective. Try another
Indicator to verify. Note: Be
aware of electrical
interference that might affect
your scale such as mobile
phones, CB radios, radio
towers, electrical motors, etc.
Also make sure load cell
cables are not attached to
hydraulic lines or reservoir
because of static electricity.
START
YES NO
Does the indicator come on?
Is the reading on the
Indicator stable?
If your display is unstable or flashes
“±RANGE”, disconnect the J-Box cord
from the Indicator. Is the display still
unstable?
Bad Indicator:
If you suspect
a bad indicator, the easiest
way to check, is to try another
Indicator. Even if the Indicator
is a different model or is set-
up for a different scale it
should at least come on.
NO
YES
Stand or hang your weight over
each load cell. Does the indicator
respond to your weight?
NO
YES
Check all J-Box and
load cell cables for cuts
or pinched flat spots.
YES
Are the readings all positive? If
not the load cell is upside down.
Does the scale weigh you
approximately the same over all
load cells (but not your weight)?
YES
Your Indicator is probably not
set up and calibrated correctly.
Check the decal on the bottom
of the Indicator. It shows what
type of load cells the Indicator
was calibrated to. By pressing
the “ON” key while the
Indicator is already on, you will
get the Indicator’s “Set-up” and
“Cal” numbers. Write these
down and see if they compare
to the set-up and calibration
number on the Indicator.
Contact your dealer for further
NO
Remove the cover from your
J-Box.
Is there moisture inside J-Box?
NO
YES
Look for loose connections. If you watch
your Indicator display while moving wires
inside the J-Box around and by pressing
on the J-Box printed circuit board. You
will see if there is a loose connection or
bad solder joint.
Dry out your J-Box (a hair
dryer works great). Check
cable strain relief for
tightness. Cables should
have drip loops. Is cover
gasket damaged?
Have you found a bad
connection or a loose wire? YES
Fix or replace the J-Box
Continued on next page
Poor Connection:
Poor
connections can be tricky. If
in doubt, don’t just tighten the
connection. Take them apart
and clean them first. Any
connection with rust or paint
should be sanded or wire
brushed.
Bad Battery:
If you suspect
the battery, try replacing it
with another one. Don’t be
fooled if using a voltmeter to
test your battery. A weak
battery may test good if
checked when there is no
load on the battery.
Bad Power Cord:
Make sure
the power cord red wire is
connected to the plus (+)
positive side and the black (-)
negative wire is connected to
the negative side. If using a
multimeter to check for
voltage, measure between pin
1 (pos) and pin 2 (neg). The
meter should read between
16.5 and 14.5 volts DC.