¶ What is the power module
The power module is an AC to DC power converter, with variable input of 100-240V and output of 24V. It supplies power to the entire printer except the heatbed.
¶ When to use
When you are certain the power supply is not operating, or components on the power module board are burnt.
¶ Tools and materials needed
- New power module
- H1.5 & H2.0 allen key
- phillips screwdriver.
¶ Safety warning and Machine state before starting operation
Turn the power OFF and disconnect the power cord from the power socket.
¶ Operation guide
¶ Step 1 - Disconnect the power cord
Disconnect the power cord from the power socket.
¶ Step 2 - Remove screws
NOTE: There are a lot of screws involved in this procedure. Please label them and group them in separate sections as to avoid issues.
Remove the 10 screws and 4 screws from the rear cover shown in the picture. There are 2 types of screws, so keep them separate and remember which ones go where.
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¶ Step 3 - Remove rear cover
Remove the rear cover, unlock the left side belt tension ports first and then the right side one, to avoid getting stuck.
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¶ Step 4 - Remove the excess chute
Remove 2 screws, and remove the excess chute.
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¶ Step 5 - Remove the protect cover
Remove 6 screws, move power module protect cover to the side and disconnect the power cable of the heatbed.
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¶ Step 6 - Disconnect cables
Open the interface cover，loose the 3 screws to remove the 3 cables, and the disconnect the power cable to MC board.
¶ Step 7 - Remove the power module
Remove 2 screws, and then remove the power module.
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¶ Step 8 - Disconnect MC board power cable
Loosen the 2 screws shown, and then remove the MC board power cable.
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¶ Step 9 - (Assembly) Connect the MC board power cable
Connect the MC board power cable to the power board module, lock 2 screws (1 screw keep loose).
¶ Step 10 - Install the power board
Install the power board module to the inner shield, lock in 2 screws (1 screw with ground cable).
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¶ Step 11 - Connect cables
Connect the 3 cables, close the interface cover , and connect the power cable to the connector on MC board. Connect the power cable of the heatbed.
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¶ Step 12 - Install the protect cover
Install the power module protect cover, and lock in 6 screws.
¶ Step 13 - Install the excess chute
Install the excess chute, pay attention to the buckles on the both side, lock in 2 screws.
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¶ Step 14 - Install the rear cover
Pass through the tube bracket and the right side belt tension port first to install rear cover.
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¶ Step 15 - Lock screws
Screw the back panel back on. Take note of the different types of screws used (10 and 4 as shown below).
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¶ How to verify completion/success
Connect the power cord and turn power ON. Operate the LCD screen and start a self-test. If no errors occur, the replacement is complete and successful.
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Otherwise, check all the connections and try it again. If problems still persist, contact the Bambu Lab service team for further assistance.