Final assembly but a lot of problem

[Josh92971]

Hi I have a prusa i3 kit from you guys,

I did the mount and the installation following your instructions and I am still stuck on many points.

1. Z axis won’t move:

Issue: When sending instructions to move the Z axis, there will be noise but not any movement on the Z axis.
Probable cause: I switch the motor connection with the X axis and it is the same thing, I think the threadins rods and the couplings are not set correctly are bent (How can I do the correction?)
Your answer:

2. X, Y, (Z axis) move only in one direction:

Issue: X, Y, (Z only make noise) only move in + directions, only few steps and won’t stop when hitting the endstop, when I use the LCD screen I can only move in positive, I have no option to move in negative
Probable cause: I saw in another thread of Geeetech forum that in my Sanguinololu board the end stop must be connected into GND and SIG. To do this I should have an endstop with 3 pins conectors but the one I receive only have 2 pins conector

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3. Extruder wont heat:

Issue: The heating bed warm up normally but the extruder wont warm at all.
Probable: I have triple check the wiring and there could be only 3 possible failures
1. Wiring connection in the extruder (this part is delivered ready to plug by you)
2. On the connection in the mainboard
a. If you look at the picture below you will see that
i. Upper connection – heating bed: Wiring is thick
ii. Lower connection – Extruder: Wiring is thin

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3. Is my firmware set correctly?

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I remain at your disposition if you need more information.
I really appreciate your help

[Sherry]

hi,i have sent the reply to your mailbox.please check.

[Josh92971]

Hi, thank you for your answer.

I checked the temperature and the sensor is working fine. When I click on heat the extrude the nozzle stay cold I can put my finger on it.

Nevertheless, I now have on more problem:

The stepper don't stop even when reaching the endstop

Thanks for your help

[Sherry]

Hi, thank you for your answer.

I checked the temperature and the sensor is working fine. When I click on heat the extrude the nozzle stay cold I can put my finger on it.

Nevertheless, I now have on more problem:

The stepper don't stop even when reaching the endstop

Thanks for your help

hi,regarding to endstop wires,it should be connected "sig" and "-",and the 2pins of endstop wire is integrated,not separated.maybe seller delivered wrong wires to you.you can try to separate the 2 pins.
now that the modified firmware can not help,please reburn the orginal firmware.
Regarding to the extruder not heating, maybe you need to check whether the heating rod is broken.the power is 40W,psu voltage is 12V,so the circuit should be 3.3A,please measure it with multimeter.