Mondolfo Ferro MT 2450, Техническое и сервисное руководство

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24 Technical service manual
DURING A WHEEL SPIN:
• the machine remains cut out with the beeper sounding;”
• unknown characters appear on the displays;”
• the machine performs a lamp test and resets.”
The defect, normally sporadic, may occur due to a temporary loss of power on the
motherboard, or due to an interference or malfunction on the motherboard.
Check:
- that the motherboard power supply cable is wired correctly and its connectors are
connected correctly;
- that the “power supply and PEAC control circuit board” is operating correctly;
- that the motherboard power supply cable is wired correctly and its connectors are
connected correctly;
- that the motor power supply and signal wires are not coupled;
If the checks listed above do not reveal faulty components, replace the motherboard.
TOUCHING THE METAL PARTS OF THE BALANCING MACHINE GIVE
AN ELECTRIC SHOCK
Check that the power supply socket is correctly connected to earth (essential for prop-
er operation of the machine as well as for safety reasons).