Troubleshooting
24
EZ400 User’s Manual
D3655-US Rev E
TROUBLESHOOTING
FLOW CHART
Check all J-Box
and Load Cell
cables for cuts
or pinched/flat
spots.
START
YES
NO
Does the indicator come on?
Is the reading on the
Indicator stable?
YES
Put your weight on each
load cell. Does the indicator
respond to your weight?
NO
If your display is unstable, or
flashes “±RANGE” disconnect
the j-box cord from Indicator.
Is display still unstable?
NO
YES
YES
Your Indicator is probably
defective. Try another
Indicator to verify.
Note:
Be aware of electrical
interference that might
affect Indicator, such as
mobile phones, CB
radios, radio towers,
electrical motors, etc.
Make sure Load Cell
cables are not attached to
hydraulic lines or
reservoir.
Are the readings
all positive? If not
Load Cell is
upside down.
Poor Connection
: Take them
apart and clean connections.
(Rust or paint should be wire
brushed.) Then reconnect and
tighten securely.
Bad Battery:
Replace battery
(weak battery may test good if
tested with no load on battery)
Bad Power Cord:
Make sure
red wire is connected to (+)
positive side and black wire is
connected to (-) negative side.
When using a multimeter to
check for voltage, measure
between pin 1 (pos) and pin 2
(neg). Meter should read
between 10.5 and 14.5 volts
DC if using a tractor power
cord, black wire is positive and
white wire is negative.
Bad Indicator:
Try another
Indicator. (Even a different
model or set-up should come
on.)
Does the scale weigh you
approx. the same over all
Load Cells? (Weight will
not be accurate)
YES
NO
Remove the cover from your J-Box
Is there moisture inside the box?
YES
Dry out your J-Box (use a
hairdryer). Check cable
strain reliefs for tightness.
Cables have drip loops. Is
lid gasket damaged?
NO
Look for loose connections.
Watch your Indicator display
while moving the wires and
pressing on the circuit board
inside the J-Box. You will see
if there is a loose connection
or bad solder joint.
Your Indicator is probably not set-up
and calibrated correctly. Check the
decal on the bottom of 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. See if they compare to the
set-up and calibration numbers on
the Indicator. Contact Dealer for
further information.
Fix or replace the J-Box
Did the J-Box have a bad
connection or loose wire?
YES
NO
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