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Electrical System
4.2-17 No Light/Alarm when Platform is Overloaded
Overload Indicator Light does not Turn On when Platform is Overloaded:
1. Defective lamp.
2. Load cell circuit not operating.
3. Load sense/dual load zone module out of
calibration.
4. No output from module.
5. Loose or broken wire #82 from the base terminal
strip to connector A pin #13.
6. Loose or broken wire #82 in boom cable A or its
connectors.
7. Loose or broken wire #82 plug A pin #4 to 82CR
pin 85.
8. Defective relay 82CR.
9. Load cell circuit not operating.
Audible Alarm does not Turn On when Platform is Overloaded:
1. Defective alarm BP3.
2. Loose or broken wire #82 plug A pin #4 to
162ACR1 pin 30.
3. Loose or broken wire #118 from relay 162ACR1
to alarm BP3.
4. Loose or broken wire #2 from alarm BP3 to
platform terminal block.
5. Defective relay 162ACR1.
SJ85 AJ
Section 4 – Troubleshooting Information
Check lamp. Replace if defective.
Check Voltage across 1Ω (ohm) resistors 161 and
162 in base control console. See Fig. 1 above.
Calibrate module. Refer to section 5 of this manual
for the procedure.
Check Voltage at black connector J3 pin #3 for
12V when platform is loaded with 110% of rated
capacity (with the boom fully retracted and 12"
(30cm) off the ground).
Check continuity. Replace if defective.
Check for continuity between pins #4 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective.
Check relay. Replace if defective.
Check for connections with wire #02A at pilot light
strip and relay 82CR, and wire #82 at platform
terminal block and relay 82CR.
Check alarm. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check relay. Replace if defective.
229044ADA
127
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