Problems with Prusa i3 Tronxy

Just got this printer and I am a newbie to 3d printing.
First; the wiring system has been checked and checked and checked again with the wiring diagram. It is correct.
Second; when trying to 'home', X axis moves abount an inch to the right, Y axis does not move at all, and Z does what is expected but is not yet adjusted.
When trying to 'Position', X,Y, and Z axis will move only one way.

Also, what happens when pressing the reset button. What exactly does it reset?

The labeling on the main board is, Melzi 2.0_v5.

Any help at all appreciated.

dlw

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dlw
First; the wiring system has been checked and checked and checked again with the wiring diagram. It is correct.

Pictures or it didn't happen

Quote
dlw
Also, what happens when pressing the reset button. What exactly does it reset?

I don't know about Melzi, but on a RAMPS its like a 'kill switch' (power reset).

Also, do you have a multimeter. If not, buy one, someone with more electronics exp than me will probably give you some things to check.

Edited 2 time(s). Last edit at 06/09/2017 09:57PM by VonRansak.

Have you tested the endstops with a M119 command?

What are the voltages on the drivers - if the Melzi has them?

Steve

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My updated Instructable on our Prusa i3 Build
[www.instructables.com]

Thanks for replying.

I only wanted to post one problem at a time, however...
Cura and other 3d software can not find the printer because of 'com port' problems.
Do not know how to find answers to your questions with just the onboard LCD.
Yes, I have a voltmeter... somewhere. I'll have to find it today.

dlw

Found voltmeter... had to go get a new battery.
Z voltage = 5 vdc.
Y voltage = PROBLEM!
With end stop unpluged, when touching negative lead from voltmeter to black connection on mainboard... printer turns off. Tried 4 times.
X voltage = 5 vdc.

Ideas welcomed.

dlw

5V !!!! End stops normally read 12V.
Are you getting 12v to the board?
You say there is a problem with the comms so you are working with the display controls only but is that working with the PSU or only when connected to a computer.
If it only works when connected to a computer you may just be getting 5V via the USB and nothing from the PSU.
Its has been known for the supplied document to be wrong. And some times the instructions don't translate very well.
I can only suggest you check the wiring again.

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MCcarman
5V !!!! End stops normally read 12V.
Are you getting 12v to the board?

No. 9.8V.

You say there is a problem with the comms so you are working with the display controls only but is that working with the PSU or only when connected to a computer.
If it only works when connected to a computer you may just be getting 5V via the USB and nothing from the PSU.

Can not get it recognized by my W7 laptop or Ubuntu PC. Do not think that is the printer's fault.

Its has been known for the supplied document to be wrong. And some times the instructions don't translate very well.
I can only suggest you check the wiring again.

Trying to get it replaced but having trouble with seller.
May have to envolve ebay or Paypal.