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11
B. TROUBLESHOOTING
All measurements other than the cord short circuit test are performed
as energized.
The relevant person shall wear insulating shoes and shall not contact
the circuits by hand. In case of contact, he shall cut off power, and re-
supply the required energy during measurement.
The faults in the product may be examined as follows: When the product is supplied with power;
1. If no component is operating (motor, lamp, switch lights are off, etc.);
> The product may not be receiving power. In such a case, check the power in the
circuit, too.
♦ Circuit power check;
> Fuse may be blown if there is no power in the circuit. Make sure that the fuse is
on.
> Power cord may be damaged if the fuse is OK. In such a case, a cord short circuit
test shall be performed.
♦ Short Circuit Test for the Power Cord;
> Switch may be faulty if there is power in the circuit. In this case, a switch
qualification test is required.
♦ Switch Qualification Test;
> If the switch passes the qualification test, then the circuit is faulty.
2. If the switch lights are on but the motor is not running;
> Start the engine at 1. speed and measure the engine outputs.
♦ Engine 1. Speed Measurement
> Start the engine at 2. speed and measure the engine outputs.
♦ Engine 2. Speed Measurement
> Start the engine at 3. speed and measure the engine outputs.
♦ Engine 3. Speed Measurement
> The motor is defective if the motor measurements given on the card can be
made.
> If the indicated values are not seen on the motor outputs, then the switch may
be faulty. In this case, a switch qualification test is required.
♦ Switch Qualification Test;