Nichiyu (& Nyk) FBZ25PL:
Nichiyu FBZ25PL Circuit board problem or something else

I've old (year 1993) Nichiyu FBZ25PL-55BC-470M electric forklift. After start it's working perfectly only about 1 minute and then it will shut down functions and stop operating. When the error occurs the numbers in display are dimming slowly and then finally are not visible at all. After that only steering works. Then after 10-15 minutes waiting it works again the same one minute operating time.

Could it be fault in circuit board (PB84-46)? There is three red leds on the board: leds P5 and P12 are on (bright) all the time and when the fault occurs the third led STP will turn on. I'm very grateful if someone can guide me to fix the problem.
  • Posted 24 Jan 2016 20:26
  • Discussion started by villmanstrand
  • South-Carelia, Finland
Showing items 1 - 8 of 8 results.
Hi. I had the same problem as you! can you help me!? my fbr forklift has a p7 light.
Thanks you
  • Posted 3 Jul 2022 18:22
  • Reply by Vo_Huy
  • Vietnam
Huy
hello. If you are talking about model 60-75 series, behind display got a display board with 3 leds, two leds must be solid ( on) and one must be blinking (if that led diode is solid or off) you just need to reset display board.just connect the negative of the battery cell to one connection that says "CC", after that you need to change language and set speeds for sideshift funtion. for that you need to move the rotary switch and with the buttons you could get the new values.
  • Posted 1 Jul 2018 15:39
  • Reply by Sparky79cl
  • Auckland, New Zealand
jero, add your email in your profile I will send an electrical diagram.
I was just wondering, normally there's an automatic fuse behind the steering column, take a look at it.
Regards
marcb
  • Posted 16 Jan 2018 04:24
  • Reply by marcb
  • ANTWERP, Belgium
Good! I have mounted two new resistance and the forklift still does not work motor traction or hydraulic motor... 3 MPU led on. Igbt modules are fine, thyristors are also ok. Where do I go?
  • Posted 15 Jan 2018 02:28
  • Reply by jero_m
  • jaen, Spain
Maintenance and repareur.
Good! The model is FB18PN-55-300SF This morning I have been checking and I have discovered 2 ceramic resistors of power 30W 2.2 ohm. open (infinite measure). In addition ceramic was broken. Tomorrow I will mount two new 50W 2.2 ohm aluminum resistors. I hope this is the fault... (I think so)
  • Posted 12 Jan 2018 07:26
  • Reply by jero_m
  • jaen, Spain
Maintenance and repareur.
Jero, please give the model and serial number. You've asked the same question for a different model. And see if there's a display-board mounted (open the grey cover below the display on the mast side) see if and what LED is burning or blinking.
Regards
marcb
  • Posted 12 Jan 2018 03:50
  • Reply by marcb
  • ANTWERP, Belgium
Hello! I have the same problem, I give the contact and nothing works. Only the power steering engine works. Three red LEDs on the control unit. Sometimes the main engine contactor comes in, but it hits a lot of sparks and just a little tug. What should I look to solve the problem? Thanks in advance.
  • Posted 11 Jan 2018 08:12
  • Reply by jero_m
  • jaen, Spain
Maintenance and repareur.
Hello Lasse,
Led P5 and P12 must be ON, STP has to stay OFF. STP only lights up when the microcomputer doesn't work.
Could it be that the battery current is dropping of somewhere?
There are 4 resistors on the main board (were the diodes en FET's are on) please control them.
Regards
Marc
  • Posted 25 Jan 2016 18:41
  • Reply by marcb
  • ANTWERP, Belgium

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