¶ Overview
¶ Location
The main control board is located at the right inner panel of the machine, and replacing it requires removing the right panel.
¶ Terminology
Different from our official term, some people may use the following terms to describe this component:
- Motherboard
- mainboard
- Brain board
- Controller
- Printer control board
¶ Difficulty and Time Estimate
- Difficulty：★★★☆☆ (moderate)
- Estimated Time：20 minutes
¶ Where to Buy
US: https://us.snapmaker.com/products/main-control-board-for-snapmaker-u1
EU: https://eu.snapmaker.com/products/main-control-board-for-snapmaker-u1
Global: https://shop.snapmaker.com/products/main-control-board-for-snapmaker-u1
¶ Tools and Parts Required
- H2.0 hex key
- New main control board
¶ Part 1. Remove the panels
¶ Step 1. Unload filament from toolheads 3 and 4
- Tap the highlighted area on the screen.
- Tap "Unload Mode".
- Select toolheads 3 and 4, then tap "Unload".
- Wait for the machine to complete the unloading.
- Turn the spool to retract the remaining filament.
- Remove the spools and spool holders 3 and 4.
¶ Step 2. Power off the machine
- Before proceeding, please turn off the machine and unplug the power cable!
¶ Step 3. Remove the filament feeder on right side
- Press the clip at the marked location.
- While pressing the clip, slide the filament feeder in the indicated direction to remove it.
- Next, press point 1 as shown in the image to disconnect the filament feeder cable.
- Complete.
¶ Step 4. Disconnect USB cables
- Use a H2.0 hex key to remove the 8 screws from the 4 USB cables, then unplug the cables.
¶ Step 5. Remove the top cover panel
- Take out the silicone plugs from all four corners of the top cover panel.
- Use a H2.0 hex key to remove the 4 screws beneath the plugs.
¶ Step 6. Remove the right panel
- Slightly shift the top cover panel as shown in the image, then remove the four marked screws.
- Remove screws 5 and 6 located inside the spool holder holes.
- Then remove screws 7 and 8 on the right inner panel.
- Pass the filament feeder cable through position 1 and disconnect the two RFID cables at position 2, then remove the right panel.
¶ Part 2. Replace the main control board
¶ Step 7. Remove the old main control board
- Disconncet the 16 cables from main control board.
For the FFC cables at positions 2, 3, and 16, lift the black flip cover slowly before removing them.
- Use the H2.0 hex key to unscrew the 4 screws, then remove the old main control board.
¶ Step 8. Install the new main control board
- Install the new main control board, use the H2.0 hex key to tighten the 4 screws.
- Reconnect the cables to the main control board.
| No. | Cable | No. | Cable |
|---|---|---|---|
| 1 | LAVA WIFI Antenna | 9 | Right Motor Cable |
| 2 | Camera Control Cable | 10 | Z-axis Motor Cable |
| 3 | Screen Control Cable | 11 | Heated Bed Control Cable |
| 4 | Light Strip Control Cable | 12 | Main Board Power Cable |
| 5 | USB Transfer Cable | 13 | USB Expansion Cable |
| 6 | Main Control Board—HUB Board Connection Cable | 14 | CAN Board Expansion Cable |
| 7 | Chamber Temperature NTC | 15 | Filament Feeder Cable |
| 8 | Left Motor Cable | 16 | RFID Transfer Cable |
¶ Part 3. Reassemble the machine
¶ Step 9. Reinstall the right panel
- Reconnect the RFID cables at position 1, pass the filament feeder cable through position 2, then install the right panel.
- Use the H2.0 hex key to tighten the 8 screws of the right panel.
¶ Step 10. Reinstall filament feeder and spools
- Reconnect the filament feeder cable and organize it as shown.
- Align the feeder clips with the corresponding positions, then push the feeder into place in the direction shown to complete installment.
- Reinstall the spools and spool holders.
¶ Step 11. Reinstall the top cover panel
- Install the top cover panel, use the H2.0 hex key to tighten the 4 screws.
- Install the silicone plugs.
¶ Step 12. Reconnect USB cables
- Reconnect the USB cables, then use the H2.0 hex key to tighten the 8 screws.
¶ Step 13. Insert filament
- Power on the machine and insert the filaments into the corresponding feeder ports in sequence.
¶ Reach out to Snapmaker Support
After following the troubleshooting steps, if you find it difficult to resolve your issue, kindly submit a support ticket through https://snapmaker.formcrafts.com/u1-troubleshooting-request and share your troubleshooting results with some pictures/videos.
Our dedicated support team will be more than willing to assist you in resolving the issue.