¶ Overview
¶ Location
There are 2 XY-motors, located at the top left corner and the top right corner of the printer
¶ Difficulty and Time Estimate
- Difficulty：★★★★★(difficult)
- Estimated Time：180mins
¶ Where to Buy
This accessory is expected to be available on the official Snapmaker online store soon. Please stay tuned.
¶ Tools and Parts Required
- H1.5 Hex key
- H2.0 Hex key
- Tweezers / Flathead screwdriver
- Strong needle-nose pliers
- Fine wire or Copper wire
- Zip tie
- New XY-motors
¶ Procedure
¶ Step 1. Unload filament
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Tap the marked position on the screen
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Tap Unload Mode
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Select all toolheads and tap Unload
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Wait for the printer to complete the filament unloading automatically
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Rotate the spools to retract all filament, then remove the 4 spools (including the spool holders)
¶ Step 2. Take off all toolheads
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Power off the printer and disconnect the power supply
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Use an H2.0 hex key to unscrew the 8 screws securing the 4 USB cables, and unplug the USB cables
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Press the quick connector on the back of the machine to remove the 6 mm filament tube along with its holder, then use the same method to pull out the other three filament tubes (including holders)
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Remove all toolheads one by one using the following method
¶ Step 2. Remove the feeders on both sides
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Power off the printer and disconnect the power supply
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Press the quick connectors at the back of the machine and remove the 4mm filament tubes connected to the feeders. Repeat the same steps to remove the remaining 4mm filament tubes
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Remove the left feeder according to the instructions below
Press the marked position
While holding down, move the feeder in the direction shown and remove it
Press point 1 to disconnect the feeder cable
Complete
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Remove the left feeder according to the instructions below
Press the marked position
While holding down, move the feeder in the direction shown and remove it
Press point 1 to disconnect the feeder cable
Complete
¶ Step 4. Remove the printer casing
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Remove the silicone plugs from the four corners of the top cover, then use an H2.0 hex key to unscrew the 4 screws beneath the silicone plugs and take off the top cover panel
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Remove the left plastic panel as follows：
Use an H2.0 hex key to unscrew screws 1–4
Use an H2.0 hex key to unscrew screws 5–6 (located in the holes corresponding to the spool holder)
Use an H2.0 hex key to unscrew screws 7–8 (left inner panel)
The feeder cable passes through point 1
disconnect the 2 RFID cables at point 2, then remove the left plastic panel
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Remove the right plastic panel as follows：
Use an H2.0 hex key to unscrew screws 1–4
Use an H2.0 hex key to unscrew screws 5–6 (located in the holes corresponding to the spool holder)
Use an H2.0 hex key to unscrew screws 7–8 (right inner panel)
The feeder cable passes through point 1
disconnect the 2 RFID cables at point 2, then remove the right plastic panel
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Remove the rear cover of the touchscreen and disconnect the FFC cable
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Use an H2.0 hex key to unscrew a total of 10 screws securing the front panel and 2 screws on the glass door hinge, then remove the front panel
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Use an H2.0 hex key to remove all 11 screws, then take off the rear cover panel
¶ Step 5. Remove the hub adapter board and the toolhead docking bracket assembly
- Disconnect all 7 cables from the hub adapter board
- Use an H2.0 hex key to remove 2 screws and take off the hub adapter board
- Remove the rear cover of the toolhead docking bracket assembly
- Use an H2.0 hex key to remove 4 screws and take off the toolhead docking bracket assembly
¶ Step 6. Remove the toolhead swapper
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Use an H2.0 hex key to unscrew 2 screws and remove the part cooling fan air duct and part cooling fan shroud
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Disconnect the part cooling fan cable then use an H2.0 hex key to unscrew 2 screws and remove the part cooling fan
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Use an H1.5 hex key to unscrew 4 screws and remove the part cooling fan adapter board
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Use an H2.0 hex key to unscrew 4 screws and remove the toolhead swapper base
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Use an H2.0 hex key to sequentially unscrew 8 screws and separate X-axis slider-1 and X-axis slider-2, note that X-axis slider-2 has 4 anti-backlash springs, after disassembling the X-axis sliders, place them safely to avoid loss
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Use an H2.0 hex key to unscrew 2 screws securing the end tensioning movable block, note these 2 screws have lock nuts on the back of the slider, remove and store them safely
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Slowly remove the end tensioning movable block and torsion springs, 2 each
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On the outer surface of X-axis slider-2, use an H2.0 hex key to push out the timing belt fixing block and remove the end of the timing belt fixed here
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There are two timing belts, upper and lower. Use zip ties to secure the right end of the upper timing belt and the left end of the lower timing belt to the carbon rod.
¶ Step 7. Replace the XY motors
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Facing the back of the machine, first remove the left motor, use an H2.0 hex key to remove 4 screws
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Disconnect the left motor cable, tweezers or a hex key can be used to assist
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When removing the left motor, it may be blocked by the inner panel, gently push the panel inward to remove the motor smoothly
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Align the motor cable interface as shown, install the new motor
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Reconnect the motor cable
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Use an H2.0 hex key to tighten the 4 screws
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Next remove the right motor, use an H2.0 hex key to remove 4 screws
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Disconnect the right motor cable, tweezers or a hex key can be used to assist, then remove the right motor
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Align the motor cable interface as shown, install the new motor
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Reconnect the motor cable
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Use an H2.0 hex key to tighten the 4 screws
¶ Step 8. Restore the toolhead swapper
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Place the machine front side down
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Install the two end tensioning movable blocks with timing belts to the left and right limits of X-axis slider-2 as shown, note the orientation of the movable blocks, use an H2.0 hex key to tighten 2 screws and the lock nuts on the back
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Loosen one of the cable-tied timing belts, use tweezers or a flathead screwdriver to lift the cable tie latch and feed the tied belt back to release
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Pass one end of the released timing belt through the illustrated position, keep X-axis slider-2 stationary, straighten and tension the timing belt
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Pre-install the timing belt fixing block, with the grooved end facing up, ensure the back of the groove surface is flush with the timing belt, then use an H2.0 hex key to press the fixing block down until its top is flush with the inner surface of X-axis slider-2
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Fix the other timing belt in the same way, then pull both belts in reverse to check if they are secured
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Insert the long end of the torsion spring arm into the end tensioning movable block
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Hook the middle of the torsion spring into the groove post, use an H2.0 hex key to partially tighten 2 screws securing X-axis slider-1 and X-axis slider-2 into the post (about 1/3, to prevent the torsion spring from popping out)
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Use strong needle-nose pliers to twist the short end of the torsion spring into the groove, ensure the spring is flush with the groove bottom, and the long arm remains in the middle hole of the movable block, finally remove the screws from the post
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Place 4 anti-backlash springs into the illustrated position of X-axis slider-2, move the oil-free bearing into the X-axis slider-2 groove, cover with X-axis slider-1, and sequentially tighten 8 screws
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Use an H2.0 hex key to loosen the 2 screws of the end tensioning movable block counterclockwise 180°
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Move X-axis slider along the illustrated path to ensure smooth motion, then use an H2.0 hex key to tighten the 2 screws of the end tensioning movable block
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Install the male mount, use an H2.0 hex key to tighten 4 screws
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Install the part cooling fan adapter board, use an H1.5 hex key to tighten 4 screws
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Install the part cooling fan, restore cables, use an H2.0 hex key to tighten 2 screws
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Install the part cooling assembly, use an H2.0 hex key to tighten 2 screws
¶ Step 9. Install the hub adapter board and toolhead docking bracket assembly
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Install the toolhead docking bracket assembly and tighten 4 fixing screws with a H2.0 hex key
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Install the rear cover of the toolhead docking bracket assembly
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Reconnect all 7 cables to the hub adapter board
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Install the hub board and tighten 2 fixing screws with a H2.0 hex key
¶ Step 10. Install the printer casing
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Install the rear cover panel and tighten all 11 fixing screws with a H2.0 hex key.
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Pass the FFC cable through the reserved window in the frame, install the front panel, use an H2.0 hex key to tighten a total of 10 screws on the front panel and 2 screws on the glass door hinge
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Restore the screen FFC cable, install the screen rear cover
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Restore the RFID cable at point 1, pass the filament feeder cable through point 2, install the left plastic panel
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Use an H2.0 hex key to tighten 8 screws on the left plastic panel
Tighten screws 1—4
Tighten screws 5—6 in the holes corresponding to the filament holder
Tighten screws 7—8 on the left inner panel
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Restore the RFID cable at point 1, pass the filament feeder cable through point 2, install the right plastic panel
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Use an H2.0 hex key to tighten 8 screws on the right plastic panel
Tighten screws 1—4
Tighten screws 5—6 in the holes corresponding to the filament holder
Tighten screws 7—8 on the right inner panel
- Install the top cover panel, use an H2.0 hex key to tighten 4 screws, and reinstall the silicone plugs
¶ Step 11. Install the filament feeders and spools
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The installation method for the right-side filament feeder and filament holder is as follows
Orient the cable terminals and connectors as shown
Restore the filament feeder wiring
Route the cables as shown
Align the clips to the corresponding positions as shown, install the filament feeder
Push the filament feeder into place following the illustrated direction
Connect the two 4 mm filament tubes from the filament feeder to the quick connectors at the back of the machine
Install the spools
- Install the left-side filament feeder and filament holder in the same way
¶ Step 12. Install the toolheads
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Use a H2.0 hex key to adjust the toolhead latch positions, move the latch of toolhead-1 to the left end stop, and move the latches of toolhead-2/3/4 to the right end stop
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Align the illustrated hole on the toolhead with the long positioning pin on the holder, then push inward until it reaches the end stop， Note that the illustrated side of the toolhead should face inward
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Align the two positioning pins on the toolhead with the illustrated holes on the holder and move them closer until the pins insert into the holes (for toolhead-1: the hole is on the left side of the pin, for toolhead-2/3/4: the holes are on the right side of the pin, take care to distinguish)
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Insert the 6mm filament tube back into the quick connectors at the rear of the printer
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Reconnect all USB cables and tighten 8 fixing screws with a H2.0 hex key
¶ Step 13. Load filament
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Power on the printer
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Insert the filaments into their corresponding filament feeders
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Tap the indicated position on the touchscreen
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Tap Load Mode
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Select all toolheads, tap Load, note that unrecognized filaments need to have type and color manually adjusted, save changes to complete loading
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Wait for the automatic filament loading to finish
¶ 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.