CHAPTER 6
99
6.4 SYSTEM
MALFUNCTIONS
6.4.1
CONDITION: No Indicator Display Or Function Lights
Possible Causes:
1.
Power switch turned off.
2.
Power to the meter has been disconnected.
3.
Bad meter cable connections to the battery.
4.
Battery is low (under 10.5 Volts).
5.
A fuse is blown in the power or ground cable.
6.
Faulty power switch.
7. Faulty
Meter.
8. Reversed
polarity.
What to Do:
1.
Check the power to the meter. When the meter is turned on and off, the power should not
change more than
1/2
Volt. Turn off the meter either by the key or truck battery switch for a
few seconds and then turn on again. If the meter still does not work, proceed to step 2.
2.
Check the fuses for both negative and positive leads. Use 2 amp fast blow fuses for 12 Vdc
applications and 1 amp fast blow fuses for 24 Vdc applications.
3.
Check that the power supply wires are attached correctly at the 12 Volt power source and to the
green connector at the back of the meter. Check the battery connections for corrosion.
4.
If a spare meter is available, the quickest and easiest next step is to exchange the meter. If the
new meter works, try the old meter again. If the old meter now works, the problem was likely
the meter’s internal circuit breaker. If both the old meter and the new meter do not work, the
problem is most likely in the power source (battery, meter power cable, or fuses). If the new
meter works, but the old one doesn’t, the old meter is faulty.
If you do not have a spare meter, disconnect then reconnect the green power plug on the back
of the meter. If the meter doesn’t work, then check the power source (battery, meter power
cable, or fuses). If the power sources check out, then the meter is faulty.
June 21, 2006
VULCAN ON-BOARD SCALES 1-800-237-0022
Doc. 44-10032-001 Rev. C
©
STRESS-TEK, INC. 2006
