1.If you find the nozzle no filament out
1)Check your PTFE tube plug is deep enough/Smooth
viewtopic.php?p=88482#p88482
2)Refer to this video clean your hotend
https://www.youtube.com/watch?v=evslMa5Jpc8&t=56s
3)Check the extruder motor direction is correct
If the direction of it is not correct, refer to the part of"Motor"
4)Check the spring of the feeder have enough strength/Too strength of the spring will make the filament broken
5)Clean then gear of the feeder
2.Y axis layer shift
1)Tightness the Y axis belt
2)Check the vref of the Y axis motor driver board
For A4988:0.8~1.0V is ok.
If you think A4988 is too noisy, you can replace it to TMC2208
For TMC2208:0.8~0.9V is ok.
If it allows,you'd better add the heat sink for TMC2208(It will overheat if you don't do anything)
Refer to this post adjust the vref of the motor driver
http://www.geeetech.com/forum/viewtopic ... 17&t=17038
Firmware
How to upload firmware?
http://www.geeetech.com/forum/viewtopic ... 20&t=60676
If you encounter this error info"LCD update failed",you need to plug the sd card for the printer.
Note:
If you upgrade the firmware via Easyprint failed.The printer will restart again and again.
Or it will show the nothing. Refer to the section of "LCD" update the firmware for LCD.
Cura profile
viewtopic.php?f=69&t=61552&p=85784#p85784
Drivers
1.Check the USB serial chip of your board then:
http://www.geeetech.com/forum/viewtopic ... 974#p81974
LCD
The LCD shows abnormal/Black screen/restart
viewtopic.php?f=65&t=60740
Heatbed
1.The heatbed thermistor datesheet
http://www.geeetech.com/forum/viewtopic ... 51&t=62055
Motor
1.How to reverse the direction of motors?
http://www.geeetech.com/forum/viewtopic ... 17&t=60639
Extruder
1.The filament can't stuck to the heatbed
https://www.geeetech.com/forum/viewtopi ... 65&t=61986
Endstop
You can use the M119 check it.If you find these:
1.Auto home doesn't work
2.The motor can run one direction only
viewtopic.php?f=17&t=60927
Source
1.Information for the Mainboard: GTM32 Mini S
http://www.geeetech.com/wiki/index.php/ ... TM32_Board
2.Schematic for GTM32 Mini S
https://github.com/Geeetech3D/Diagram/b ... MINI_S.pdf
3.Wires Update for GTM32 MINIS:
- GTM32 MINI wires.png (671.42 KiB) Viewed 28226 times
Upgrade
1.TMC2208
Compare the info of the TMC2208 and A4988
Tmc2208:
https://www.trinamic.com/support/eval-k ... stepstick/
A4988:
https://www.pololu.com/product/1182
The step of how to replace the A4988 to TMC2208
For the A30 with the 12V PSU and the HW is 2.0
1. Remove the MS3 of the jumpers off
2. Change the direction of the motor
http://www.geeetech.com/forum/viewtopic ... 054#p82054
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For the A30 with the 24V PSU and the HW is 2.1/3.3
1.Upload the fw for A30 with tmc2208(Beta) 2. Remove the MS3 of the jumpers off
3. Change the direction of the motor
http://www.geeetech.com/forum/viewtopic ... 054#p82054
The jumpers MS3
- jumpers ms3.png (381.03 KiB) Viewed 28221 times
2.Hotend
- Hotend-s.png (23.55 KiB) Viewed 27868 times