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  • QSS3011 problem

    Hi,I have a noritsu 3011 .The pressure change motor2 doe'nt rotate. the senssor is good in input check,icontroled the wiring no problem,Ichanged the IO pcb 1-2,the printer controle pcb but no change.So what can I do? I am also looking for the wiring diagram of 3011,if someone can help me. Best Salutation every one.

  • #2
    Look pressure change motor 2 connections : J/P460 ( pin. 1 - pin. 4 ) - J/P458 ( pin 13 - pin 16 ) - PRINTER I/O PCB 1 J/P202 ( pin 13 - pin 16 ) . Try replace printer I/O PCB 1 ( J390590 ) . Make sure that you have 24 V between ground and printer I/O PCB 1 J/P196 ( pin 1 ) . Also look do you have the same voltage after relay ( printer I/O PCB 1 test point TP7 ) . Look do you have 5 V between ground and printer I/O PCB 1 test point TP3. If all OK, but motor doesn't rotate then can be faulty PRINTER CONTROL PCB , or bad connection between PRINTER CONTROL PCB J/P236 and printer I/O PCB 1 J/P195 .

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