10
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. The micromatch
connector inlet should be checked via the switch in this case.
♦ Micromatch Connector Input Check
The switch cable may be faulty if the values specified in the
micromatch connector input of the switch are not observed. In such a
case, a cord short circuit test shall be performed.
♦ Short Circuit Test with Micromatch-IDC Socket;
The IDC socket output should be checked if there is no problem with
the cable of the switch.
♦ IDC Socket Output Check
Circuit is defective if there is a problem at the IDC Socket output,
switch is defective if there is no problem.
2. If the switch lights are on but the motor is not running;
Start the engine at speed 1 and measure the motor outputs.
♦ Motor Speed 1 Measurement
Start the engine at speed 2 and measure the motor outputs.
♦ Motor Speed 2 Measurement
Start the engine at speed 3 and measure the motor outputs.
♦ Motor Speed 3 Measurement
The motor is defective if the motor measurements given on the card can be
made.
Measurement should be made through the micromatch input of the switch if
