Anay rajput Posted September 6 Report Share Posted September 6 Earth leakage circuit breaker 2 automatic turn off and machine is power but there is no connection between computer and machine. machine is not initialize Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 6 Author Report Share Posted September 6 NORITSU 37001 Quote Link to comment Share on other sites More sharing options...
Minilab service Posted September 6 Report Share Posted September 6 Your minilab model is Noritsu QSS3701. Do you mean leakage circuit breaker NFB2 disconnects automatically? First try disconnect all heaters and power on without them. If NFB2 will not disconnect then one heater is faulty. Turn off minilab and connect one heater. Turn on minilab and look what will be. Do the same with other heaters. This way can find which one is faulty. Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 6 Author Report Share Posted September 6 (edited) DisconnectingAll this connections Edited September 6 by Anay rajput Quote Link to comment Share on other sites More sharing options...
Minilab service Posted September 6 Report Share Posted September 6 J/P662 on board - all three heaters ( CD, BF and STB ) . Heaters also have individual connectors : J/P762 ( CD heater ) , J/P763 ( BF heater ) and J/P764 ( STB heater ) . J/P765 is connector where connected heater unit. On board - connectors J/P657, J/P659 and J/P660. Do not think, that dryer has current leakage to ground. Disconnect J/P662 ( connector on board ) and try turn on minilab. Look what will be with leakage circuit breaker NFB2 . Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 7 Author Report Share Posted September 7 After disconnecting P662 leakage circuit breaker NFB2 disconnects automatically also machine is not initialize Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 7 Author Report Share Posted September 7 This is no connection between ez controler ( computer) and machine Quote Link to comment Share on other sites More sharing options...
Minilab service Posted September 7 Report Share Posted September 7 First need to find why NFB2 disconnects. All other need search after that. Have do all step by step. First check input voltages on NFB2 input ( between input contacts ) , NFB3 input ( between input contacts ) and NFB4 input ( between input contacts ) . There should be 200 - 240 V a.c. ( depends where are you from ) . If all three voltages are correct then : Disconnect J/P650 ( level sensors ) . Then relay X1 will not turn on and voltage will not go into minilab. On processor control pcb remove fuses F1, F3 and F4. Then heater control circuit will not get a power. After that turn on minilab. Look NFB2 disconnects, or not. Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 After disconnecting f1, f3 ,f4 and j650 NFB2 disconnect. Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 Quote Link to comment Share on other sites More sharing options...
davidlam Posted September 9 Report Share Posted September 9 important to know.. is qss-3701 has problem suddenly after long time working well at this site? < or > this qss-3701 started to have problem right after newly installed at this site ?？ Quote Link to comment Share on other sites More sharing options...
Minilab service Posted September 9 Report Share Posted September 9 Then something wrong with a.c. enter circuit. Did you test voltages? all three are 200 - 240 V a.c. ? F1, F3, F4 and J/P650 leave disconnected. Also disconnect TA3 wires T1 and T2. Try turn on minilab and look what will be with NFB2 ( it will disconnect itself, or not ) . Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 No i don't check voltage. Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 Today we have printed 400 print and we get 10-12 times leaser synchronis error Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 And we have one Chinese power supply and one original power supply Quote Link to comment Share on other sites More sharing options...
Anay rajput Posted September 9 Author Report Share Posted September 9 (edited) Devidlam it's been a year ago. WE ARE FACING DRYER HEATING PROBLEM NOW. Edited September 9 by Anay rajput Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 9 Report Share Posted September 9 It is best to concentrate on one issue at a time. Ideally you need to measure the voltage going in and coming out of NFB2 as Minilab service has suggested. As a test you can swap the position of NFB2 with NFB3, if it then starts tripping in the NFB3 position it will likely mean the breaker itself is faulty. Quote Link to comment Share on other sites More sharing options...
Minilab service Posted September 9 Report Share Posted September 9 Total mess in your posts. It is impossible understand anything. In one post wrote "NFB2 disconnects automatically also machine is not initialize. No connection between ez controler ( computer) and machine". Second post - "it's been a year ago. We are facing dryer heating problem now". Third post - Today we have printed 400 print and we get 10-12 times laser synchronous error" . NF2 disconnects, machine is not initialize, no connection from EZ controller, heater doesn't work, but somehow made 400 prints and had laser synchronous error. It is impossible. Only if you stop to write nonsense can give advice. Quote Link to comment Share on other sites More sharing options...
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