When I attempted to power up my Geetech I3 Pro B printer here are problems I encountered. A. the bed does not heat (not voltage at control board pins) B. the extruder does not heat. C. the X motor only drives to the stop. D. the Y motor only drives to its stop. E. the Z motors do not run F. the power supply output is only 10.55 volts
I could troubleshoot these problems if I were provided useable instructions.
Thank you. lowellsch
Initial power up failure
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zhangxueyou
- Posts: 1405
- Joined: Fri Feb 06, 2015 1:33 pm
Re: Initial power up failure
Could you please take some pictures of printer (front side, back side, left side), I want to see the color of endstops wires.
And please take a picture of mainboard with wiring, let me check your wiring.
To protect the extruder motor, it can not move unless the temperature of extruder is more than 180 degrees.
There is a resistor at the bottom-right corner of PSU, rotate that screw to calibrate output voltage:
And please take a picture of mainboard with wiring, let me check your wiring.
To protect the extruder motor, it can not move unless the temperature of extruder is more than 180 degrees.
There is a resistor at the bottom-right corner of PSU, rotate that screw to calibrate output voltage:
- QQ截图20150627171211.png (743.73 KiB) Viewed 10715 times
Re: Initial power up failure
Greetings
Thank you for helping me try to get my Geeetech I3 Pro B computer working.
Some preliminary information: I am a “mostly retired” electronic engineer with a career of designing and testing digital systems that controlled complete oil refineries and paper mills.
Here are the results of my trouble shooting my printer problems:
The printer power supply output voltage was initially 10.45 Volts. With the adjustment set to maximum it was 10.55 Volts. With no load the range is 9.92 V to 11.50 V. I substituted an external supply, set to 13 Volts and the printer problems remained the same, as described below.
With the Repetier control software on my computer showing “Heating bed”, it does not heat and there is 0 volts at the heater power output pins.
When I attempt to control the stepper motors from the Repitier software on my computer, or the printer control panel; the X and Y motors go to the limit switches and stop. The Z stepper motor does not move.
I have verified that the fuses are OK (that is not open). I believe that the limit switches are connected according to the pictures in the assembly manual. The control board cooling fan runs, as does the extruder fan.
On the control board, just below, and slightly to the right of the heater MOSFET’s there are two small yellow LED’s flashing about once evert 1.5 seconds.
When I attempted to add pictures, they obliterated all of the text. Could you please review the information I have supplied and come back with questions or suggestions?
Thank you. Lowell
Thank you for helping me try to get my Geeetech I3 Pro B computer working.
Some preliminary information: I am a “mostly retired” electronic engineer with a career of designing and testing digital systems that controlled complete oil refineries and paper mills.
Here are the results of my trouble shooting my printer problems:
The printer power supply output voltage was initially 10.45 Volts. With the adjustment set to maximum it was 10.55 Volts. With no load the range is 9.92 V to 11.50 V. I substituted an external supply, set to 13 Volts and the printer problems remained the same, as described below.
With the Repetier control software on my computer showing “Heating bed”, it does not heat and there is 0 volts at the heater power output pins.
When I attempt to control the stepper motors from the Repitier software on my computer, or the printer control panel; the X and Y motors go to the limit switches and stop. The Z stepper motor does not move.
I have verified that the fuses are OK (that is not open). I believe that the limit switches are connected according to the pictures in the assembly manual. The control board cooling fan runs, as does the extruder fan.
On the control board, just below, and slightly to the right of the heater MOSFET’s there are two small yellow LED’s flashing about once evert 1.5 seconds.
When I attempted to add pictures, they obliterated all of the text. Could you please review the information I have supplied and come back with questions or suggestions?
Thank you. Lowell
Re: Initial power up failure
Additional information that may be helpful to you in assisting me to get my printer working:
My control board is the GT2560.
The selected printer in the control software is the- Geeetech P13A. Port- Com3 Baud rate- 250000
If the control board were working properly, would the 10.55 Volts from the regular printer supply be sufficient to operate the printer?
Please tell me how I can communicate directly with an experienced trouble shooter without waiting more than a day for the response.
Thank you. Lowell
My control board is the GT2560.
The selected printer in the control software is the- Geeetech P13A. Port- Com3 Baud rate- 250000
If the control board were working properly, would the 10.55 Volts from the regular printer supply be sufficient to operate the printer?
Please tell me how I can communicate directly with an experienced trouble shooter without waiting more than a day for the response.
Thank you. Lowell
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zhangxueyou
- Posts: 1405
- Joined: Fri Feb 06, 2015 1:33 pm
Re: Initial power up failure
Sorry for replying you late because we were off duty on weekend.
I suggest you download the latest version of Repetier:
http://www.repetier.com/download-now/
You need to home all the axes first if you want to control the axis saparately, did you do that?
Can you move the axes by LCD?
10.55V is enough for printer to work but you need to care about the cooling for mosfet of hotbed.
I am not sure what's wrong with the heating part without picture, because I need to check the wiring. The text won't be cleared after you upload the attachement.
I suggest you download the latest version of Repetier:
http://www.repetier.com/download-now/
You need to home all the axes first if you want to control the axis saparately, did you do that?
Can you move the axes by LCD?
10.55V is enough for printer to work but you need to care about the cooling for mosfet of hotbed.
I am not sure what's wrong with the heating part without picture, because I need to check the wiring. The text won't be cleared after you upload the attachement.
- upload file.png (21.13 KiB) Viewed 10669 times
Re: Initial power up failure
I know you want a picture because a typical cause of a problem is the operator. However, I CAN'T get a blasted picture attached to this reply.
Can you please use the information I have given you to diagnose my problem?
I know it was a weekend but I waited three days to get your response. Now I can wait another 2 days for this info to get through a moderator and then to you and then back to me. I am to the point where I am sorry that I ever purchased this non working thing called a 3D printer.
Is there any way that I can communicate with you directly?
If I purchased replacement control board on ebay, is there a chance that it would work?
Thank you. Lowell
Can you please use the information I have given you to diagnose my problem?
I know it was a weekend but I waited three days to get your response. Now I can wait another 2 days for this info to get through a moderator and then to you and then back to me. I am to the point where I am sorry that I ever purchased this non working thing called a 3D printer.
Is there any way that I can communicate with you directly?
If I purchased replacement control board on ebay, is there a chance that it would work?
Thank you. Lowell
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zhangxueyou
- Posts: 1405
- Joined: Fri Feb 06, 2015 1:33 pm
Re: Initial power up failure
Hi, Lowell
You can send the pictures to cheung.weng@geeetech.cn
You can send the pictures to cheung.weng@geeetech.cn