# Brand new old SV06 Z-Axis jams to the front and buzzes on auto-level **URL:** \ **Category:** Sovol SV06 Plus\ **Tags:** bed-leveling\ **Created:** [October 6, 2025, 1:36am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838 "2025-10-06T01:36:41Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 6, 2025, 1:36am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/1 "2025-10-06T01:36:41Z")
Brand new old SV06. Bought it new two-years ago, but just unboxed it. Purchased new motherboard from Sovol from China a week ago, and it continues to fail the auto level. My Specs: Firmware = 1.1.5 ( this came from the factory ) Marlin Version = 2.0.9.2 A) My Z-Axis belt is tight like a guitar string. B) My stepper motor connectors are all plugged in straight C) The connectors on the motherboard are plugged in straight D) The right Y-Axis motor is delayed to start. The old motherboard did the exact same thing A Youtube of what is going on, and my original motherboard did the same exact same thing as this new motherboard, so the only thing is to down-grade the firmware to 1.1.4 . There are no end-stop micro switches [https://youtu.be/pX535EYeJgE](https://youtu.be/pX535EYeJgE) Thank you ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 6, 2025, 1:45am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/2 "2025-10-06T01:45:19Z")
Instead of hitting Auto, try hitting Z-Align. Post a video with your results. ---
**Author:** ![cardoc](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/cardoc/32/6926_2.png) [@cardoc](https://forum.sovol3d.com/u/cardoc)\ **Post date:** [October 6, 2025, 3:11am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/3 "2025-10-06T03:11:42Z")
Your left Z motor is cross connected with the Y axis. X is extruder left and right (motor at left end of gantry) Y is bed forward and back (motor at the back) Z is up and down (2 motors with lead screws) Be sure and close the power supply cover before you press auto. ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 6, 2025, 10:26am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/4 "2025-10-06T10:26:44Z")
![81YI8SbdshL](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/d/d054cdd8015d0585ab3d19ce505b3daeace4e35d.jpeg) I saw it before, but it didn’t click…your Blue Tape is all wrong. You have Z where it should by Y & both Y’s should be Z. The plugs do have little white letters on them. ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 6, 2025, 3:15pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/5 "2025-10-06T15:15:27Z")
Problem solved with the bed, and the wires were crossed from the factory, and the motor wires do have the label on them, but I did follow each wire to each motor, and they are correct. The label matches exactly to the PCB and the photo posted. Now the Z axis motors are doing the buzzing where in the leveling routine The right Z axis motor moves 2-3cm while the bed moves front to back. Then once the bed centers it self and stops. The left Z axis moves downward 6 or 7cm until it mechanically cannot move because of the angle, and then the buzzing starts, yet the right Z axis motor is not moving. In this state the SV06 has to get turned off. That is where it is at. ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 6, 2025, 5:48pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/6 "2025-10-06T17:48:46Z")
With the printer off, manually turn the Z steppers until the X axis is pretty much straight. Then turn on the printer & do Z Align. It should hit the top, grind for about 3-5 seconds then go all the way down. ---
**Author:** ![cardoc](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/cardoc/32/6926_2.png) [@cardoc](https://forum.sovol3d.com/u/cardoc)\ **Post date:** [October 6, 2025, 10:31pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/7 "2025-10-06T22:31:23Z")
> [@NoBuenoSovol](#): > > The right Z axis motor moves 2-3cm while the bed moves front to back You are still cross connected. The X and Y axies should move one at time and the 2 Z motors should move at the same time in the same direction. The plug on the left Z motor should be on the Y motor behind the center of the bed. The Motherboard @lion shows only has a single plug for the Z axis. That means the wires from there go to both the Z motors with the screws not the the motors that run belts. There will be no Z tilt option for that setup. ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 7, 2025, 2:12am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/8 "2025-10-07T02:12:25Z")
Here is the latest video: [![](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/9/955ad3a1a306a89a0b8e8e7b833409c605fef165.jpeg "SV06 Plus with Problems") ](https://www.youtube.com/watch?v=-OkHg5Xb7rw) ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 7, 2025, 3:10am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/9 "2025-10-07T03:10:52Z")
0:56 in your video, you have the wrong plugs in…did you look at the motherboard pic above…?? You have: X in the E Y in the Z Z in the Y E in the X From the top, it should be: X Y Z E At this point, I’m not sure if the X Axis is damaged or not. Also, move the table from against the wall, the buildplate will hit it. ---
**Author:** ![cardoc](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/cardoc/32/6926_2.png) [@cardoc](https://forum.sovol3d.com/u/cardoc)\ **Post date:** [October 7, 2025, 2:06pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/10 "2025-10-07T14:06:28Z")
You also have the wrong plug in the right hand Z motor. Notice the plug at the motherboard for Z has 2 wires on each pin. That is because the 2 Z motors always move at the same time. It is possible the markers at the motor end are incorrect. You MUST get both Z motors to move in sync. ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 7, 2025, 4:11pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/11 "2025-10-07T16:11:05Z")
Corrected the wiring as one can see in the video… All I can say is the new board got damaged. The new and the old boards do the same. I installed the old board as it does the same as the new board. The old board has the latest firmware. Here is the video with the old circuit board… [![](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/a/a285b72766d432c3d90ac9006844994ed7477191.jpeg "Bed still hits the end") ](https://www.youtube.com/watch?v=LrwrWOoWCPw) So my only option is to get ANOTHER board for $30 USD. Do you guys recommend that, or are there any other ideas? Thanks ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 7, 2025, 5:51pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/12 "2025-10-07T17:51:46Z")
Leave the board wiring alone, don’t touch it. It looks like the right Z & Y are switched… Check that the left Z stepper plug is Z1 & the right Z stepper plug is Z2… If not, change it…post back. If you can either post some pics or a video showing the white tags at each stepper before you try to run the printer again. ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 7, 2025, 5:59pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/13 "2025-10-07T17:59:42Z")
Here is where the plugs should be: ![Sovol SV06 Plus](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/5/5e95c51d7b64aef84d22668f19a9e3082ab873ae.jpeg) ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 7, 2025, 8:38pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/14 "2025-10-07T20:38:37Z")
Found the culprits, The Y-axis motor( The Bed) says Z1 The left-hand tower stepper motor says Y It worked with the old board.performed the auto level.it took me to the second level adjustment screen of Auto Z-Align and Auto Leveling. Those two actions worked too with no problem. Swapped the cables around Need to put it through some tests. Print out a Benchy. I guess I need to spin adjust each Z-Axis motor with a Vernier Caliper as right now they are just eye-balled leveled with a wooden ruler-which is NOT precise. Thank you all for your help ---
**Author:** ![Lion](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/lion/32/5586_2.png) [@Lion](https://forum.sovol3d.com/u/Lion)\ **Post date:** [October 7, 2025, 9:50pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/15 "2025-10-07T21:50:44Z")
> [@NoBuenoSovol](#): > > I guess I need to spin adjust each Z-Axis motor with a Vernier Caliper as right now they are just eye-balled leveled with a wooden ruler-which is NOT precise. Do a Z Align, this will align the axis..that’s what it’s for. ---
**Author:** ![mich0111](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mich0111/32/1176_2.png) [@mich0111](https://forum.sovol3d.com/u/mich0111)\ **Post date:** [October 7, 2025, 10:44pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/16 "2025-10-07T22:44:45Z")
And don’t forget to reinitialize EEPROM before to store the new alignment. ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 7, 2025, 10:50pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/17 "2025-10-07T22:50:13Z")
But both Z- axis motors spin together, so they need to be mechanically aligned first. Initialize the eeprom? Is that on the touch panel ? Thanks ---
**Author:** ![mich0111](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mich0111/32/1176_2.png) [@mich0111](https://forum.sovol3d.com/u/mich0111)\ **Post date:** [October 7, 2025, 10:55pm UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/18 "2025-10-07T22:55:35Z")
Yes, from memory the panel “Settings”. ---
**Author:** ![NoBuenoSovol](https://avatars.discourse-cdn.com/v4/letter/n/71c47a/32.png) [@NoBuenoSovol](https://forum.sovol3d.com/u/NoBuenoSovol)\ **Post date:** [October 8, 2025, 1:49am UTC](https://forum.sovol3d.com/t/brand-new-old-sv06-z-axis-jams-to-the-front-and-buzzes-on-auto-level/8838/19 "2025-10-08T01:49:00Z")
Yes it does compensate as I see the negative on one side and positive on the other. I will break-out the vernier caliper and align each then mechanically and perform the test again. I reassembled the wiring left the connections in the mother board box with some slack, and cable-tied the cables all around the unit. I wonder why the display is on the side instead of the front, and power cable coming out 90 degrees out of the power supply. I will mount the touch panel in front past the bed, and get a 90 degree power cord. Thank you all for your help. I tested it again all re assembled, and it works fine.