Flsun Qq Leveling Sensor Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          20 - 40 minutes

Sections

Leveling Sensor
10 steps

Flags

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

BackFLSUN QQ Repairs
Full Screen
Options
History
Save to Favorites
Download PDF
Edit
Translate
Get Shareable Link
Embed This Guide
Notify Me of Changes
Stop Notifications

Introduction

What you need

Step 1

              Tools

2 hex wrenches that came with your printer

2 hex wrenches that came with your printer

1024

Step 2

              Parts

sensor
effector plate
connector cable
magnetic mount

sensor

effector plate

connector cable

magnetic mount

Step 3

              Open the Printer

remove 6 screws in the base of the printer
open the bottom cover

remove 6 screws in the base of the printer

open the bottom cover

Step 4

              Swap the Sensor

Remove the connector with 2 white wires from the second green slot
Plug the connector for the new sensor into the second green slot.

Remove the connector with 2 white wires from the second green slot

Plug the connector for the new sensor into the second green slot.

Step 5

              Run the Cable

feed the cable through a convenient hole in the bottom plate
re-attach the plate to the printer with the 6 screws removed earlier

feed the cable through a convenient hole in the bottom plate

re-attach the plate to the printer with the 6 screws removed earlier

Step 6

              Remove Old Effector

pop off the fan ducts
Remove 3 smaller screws from the bottom of the effector
Remove 6 long screws from the connection points from the rods to the effector. (be careful to keep the tiny washers)

pop off the fan ducts

Remove 3 smaller screws from the bottom of the effector

Remove 6 long screws from the connection points from the rods to the effector. (be careful to keep the tiny washers)

Step 7

              Install New Effector

Install fan ducts in new effector.
Attach the magnetic sensor dock to the new effector and mount the effector and heating element with the 3 small screws from earlier.
Reatach the whole assembly to the rods with the 6 long screws removed earlier.

Install fan ducts in new effector.

Attach the magnetic sensor dock to the new effector and mount the effector and heating element with the 3 small screws from earlier.

Reatach the whole assembly to the rods with the 6 long screws removed earlier.

Step 8

              Install New Sensor

plug the new sensor into the other end of the connector cable
attach the sensor to the magnetic mount

plug the new sensor into the other end of the connector cable

attach the sensor to the magnetic mount

Step 9

              Firmware

For the leveling sensor to work you will need new firmware.
Download it from https://www.dropbox.com/sh/p2jltxhkua629…
Unarchive the files.
Copy them to the root of an SD card
Make sure the printer is powered down
Insert the SD card with the firmware
Power on the printer.
The printer will update it’s firmware.

For the leveling sensor to work you will need new firmware.

Download it from https://www.dropbox.com/sh/p2jltxhkua629…

Unarchive the files.

Copy them to the root of an SD card

Make sure the printer is powered down

Insert the SD card with the firmware

Power on the printer.

The printer will update it’s firmware.

Step 10

              The End

Congratulations your QQ is now upgraded!

Congratulations your QQ is now upgraded!

Cancel: I did not complete this guide.

                                                                                      One other person completed this guide.

Author

                                      with 2 other contributors

                    Daniel Green

Member since: 02/08/2015

1,014 Reputation

                                      5 Guides authored                  



                       Badges:
                       12







                                                        +9 more badges

mike_biddell - Aug 31, 2019

I followed the instructions and the Head started printing over 1 cm above the bed. I had to alter the Z offset to -18.5 mm. An icon appeared in the menu system “levelling_sw”, but does nothing when pressed. So there appears to be NO manual levelling option after carrying out the upgrade. Quite disappointing.

CityZ - Nov 11, 2019

The “Leveling_sw” button adjusts the offset needed to use the leveling switch. (The offset is the distance between the nozzle and the bed when the switch is pressed.) There’s another Z-offset button that sets it to the default offset for using the leveling pad. You have to push the appropriate offset button before engaging the leveling option.

The QQ doesn’t have manual leveling without changing the Gen L board firmware to a different Marlin version.

Sven K - Oct 21, 2019

hi, is not working for me. i can push the leveling button in screen so often, there´s no funktion, how could it be?

Ist it if my sensor have only two pins? Its the leveling sensor like anycubic delta is using.

Please explain or give me a link for these 3pin level sensor as you have shown in your pictures. Thanks.

If you are using the Anycubic switch, it might be wired differently than the Flsun version. If you look inside the sensor at the switch itself, there’s pins for normally-open (NO) and normally-closed (NC). The wire going to NC needs to be moved to NO.

On the control board, the wires need to go to Ground and Signal for the Z-min plug. Do not connect to the Voltage pin.

David Houghton - Jan 22, 2020

Have you got a link for the FLSUN levelling switch please.

Member-Contributed Guide#

Introduction#

What you need#

Member-Contributed Guide

Introduction

What you need