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FOREWORD
Handling Controller
The controller contains a microcomputer and electronic control
circuits. These control all of the electronic circuits on the machine; be
extremely careful when handling the controller.
•
Do not place objects on top of the controller.
•
Cover the control connectors with tape or a vinyl bag. Never touch
the connector contacts with your hand.
•
During rainy weather, do not leave the controller in a place where
it is exposed to rain.
•
Do not place the controller on oily or damp surfaces, or on soil. Do
not place the controller in a hot place, even for a short time. Place
it on a suitable dry stand.
•
Precautions when carrying out arc welding
When carrying out arc welding on the body, disconnect all wiring
harness connectors connected to the controller. Fit an arc welding
ground close to the welding point.
Troubleshooting Electric Circuits
1.
Always turn the power OFF before disconnecting or connecting connectors.
2.
Before carrying out troubleshooting, check that all the related connectors are properly inserted.
★ Disconnect and connect the related connectors several times to check.
3.
Always connect any disconnected connectors before going to the next step.
★ If the power is turned ON with the connectors still disconnected, unnecessary abnormal displays will be generated.
4.
When carrying out troubleshooting of circuits (measuring the voltage, resistance, continuity, or current), move the related
wiring and connectors several times and check that there is no change in the reading of the tester.
★ If there is any change, there is probably a defective contact in that circuit.
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HANDLING ELECTRIC AND HYDRAULIC EQUIPMENT
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WA250-6
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