178
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 4 – Troubleshooting Information Load Sensing System - CE & AS
4.4 Load Sensing System - CE & AS
4.4-1 Green Power LED is not Flashing
1. Loose or broken wires #60 and #02 at platform
terminal block.
Check for connections. Check for voltage (12V).
2. Load cell has lost its calibration. Refer to calibration procedure for recalibration of
load cell.
4.4-2 Load Cell red Alarm LED is ON (with platform empty)
1. Load cell has lost its calibration. Refer to calibration procedure for recalibration of
load cell.
4.4-3 Red Error LED is ON
1. Open safety contact circuit. Check for connections with wires #161 and #162A
at platform terminal block and base terminal block.
Check resistor R6 for 680 ohms.
4.4-4 Load Cell red Alarm LED is OFF (with platform overloaded)
1. Load cell has lost its calibration. Refer to calibration procedure for recalibration of
load cell.
4.4-5 Platform Indicator Light does not turn ON
1. Defective lamp. Check relay. Replace if defective.
2. Defective relay 82CR. Check relay. Replace if defective.
3. Load cell circuit not operating. Check for connections with wire #02A at pilot light
strip and relay 82CR, and wire #82 at platform
terminal block and relay 82CR.
4. Defective load cell. Defective if 0V is measured between wire #82 and
#02 from platform terminal block.
4.4-6 Audible Alarm does not turn ON
1. Defective alarm BP3. Check alarm. Replace if defective.
2. Open or defective diode D118. Check diode. Replace if defective.
3. Load cell circuit not operating. Check for connections with wires #02A and #118
at platform terminal block.
4. Defective load cell. Defective if 0V is measured between wire #118 and
#02 from platform terminal block.
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