Skyjack SJ85 AJ Service Manual

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

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English