Hofmann ATC 900, Руководство по обслуживанию

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CTC-CEN Service Manual 07-13 Rev.E
34

If it does not show that value replace the potentiometer.

If the multimeter will display the correct value, check the extension cable from the connector X6 of the CPU
board.

If also the cable extension will be fine, replace the CPU board.
TO REPLACE THE 3 TURNS POTENTIOMETER:

Remove the potentiometer protection.

Disconnect the potentiometer connector from the CPU board.

Slide the arm at the more convenient end stroke.

To slide the lower bead breaker arm press and hold SW1 or SW3
buttons on the CPU board.

Unplug the potentiometer from the CPU board.

Loosen the two screws with 5mm allen key.

Loosen the nut and remove the toothed wheel.