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Electrical System Section 4 – Troubleshooting Information
4.2-14 Green LED on Load Sense/Dual Load Zone Module is not On
1. Loose or broken wires #9 and #02 at base
terminal block to load sense/dual load zone
module white connector J4 pins #8 and #1.
Check for loose or corroded connections. Check
for voltage (12V).
4.2-15 Load Sense Indicates Overload or Overload Warning with Platform Empty or
Below Weight
1. Load sense module mis-calibration. Refer to calibration procedure for recalibration of
load cell.
2. Load cell circuit not operating. Check Voltage across 1Ω (ohm) resistors 161 and
162 in base control console.
02
02
162A
162
104
105
99
99B
99A
R3=120
R5=3.3k
R6=3.9k
R4=1k
165
118
120
121
122
90
162
161
161
R17=1
R18=1
Voltage across 162 resistor should
match voltage across 161.
Put volt meter across the two 161
blocks to measure voltage across
the 1 ohm resistor.
Empty platform = 8 mV (0.008 V)
250 lbs (113 kg) = 12mV (0.012 V)
500 lbs (227 kg) = 16 mV (0.016 V)
748 lbs (339 kg) = 20 mV (0.02 V)
To order go to Discount-Equipment.com
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