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350 fuji frontier > not starting machine ( not any letter in display ) plz help


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First check power suppliers ( Alpha 400 ) . Two power suppliers are inside power supply box. Look do you have input ( 230 V a.c ) and d.c. outputs ( only outputs without remote control option ) .

When not working first power supply - minilab doesn't start at all. When not working other power supply -  minilab starts, but have various errors.

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I thought that display was absolutely empty. If you see something - you have voltages from power suppliers.

On your miniloab doesn't work CTL20 board. Also can be, that doesn't work display, which is on built in operating panel ( KEY20 ) . 

Check power supply voltages on CTL20. Try to upgrade minilab firmware. Test CTL20 and KEY20 on other minilab.

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