¶ Precautions
When the machine needs to be disassembled for inspection, it must be checked with the power off.
¶ Tools
S2.5 Allen key*1
Tweezers (metal)*1
Avometer*1
¶ Solution
¶ Step 1: Preliminary inspection of the machine
1. Check if the Z axis of the machine is returning to zero normally.
2. Check if the Z axis motor of the machine is stuck.
3. If none of the above conditions exist, please follow the steps below to troubleshoot.
¶ Step 2: Check the Z-axis motor harness (the following steps require power off)
1. Please check whether the Z-axis motor harness is connected incorrectly or loose.
2. Use an S2.5 Allen key to remove the screws on the motherboard back cover.
3. Check whether the Z-axis motor harness of the mainboard is loose.
¶ Step 3: Remove the Z-axis motor harness
1. Unplug the Z-axis motor harness
2. Use S2.5 Allen key to remove the screws and remove the power cover (power off to operate).
3. Remove the Z-axis motor harness from the clip。
4. Remove the Z-axis motor harness from the Z-axis motor。
¶ Step 4: Test the Z-axis motor rotation
¶ Method 1: Use a multimeter to measure whether the wiring harness is normal. Set the multimeter to the beep position and test the Z-axis motor line.
1. Z-axis motor line sequence diagram, test according to the position in the picture.
2. Set the multimeter to the beep position and test the connection of the springs at both ends of the Z-axis motor line. The sound should be normal.
¶ Method 2: Test with tweezers (metal)
Use metal tweezers to touch the 5-pin terminal wire, test the A-B group and the C-D group, and rotate the Z-axis coupling left and right at the same time to observe whether the coupling has a slight sense of sticking. If both the A-B group and the C-D group are slightly stuck, the Z-axis motor line is normal.
¶ Step 5: Measure the Z-axis motor
¶ Method 1: Use a multimeter to test
Set the multimeter to the beep position and test the continuity of the A-B group and C-D. If a sound is heard, the Z-axis motor is normal.。
¶ Method 2: Test with tweezers (metal)
Test the A-B group and the C-D group, and rotate the Z-axis coupling left and right at the same time to observe whether the coupling has a slight sense of sticking. If there is a slight sense of sticking in the tests of the A-B group and the C-D group, the Z-axis motor is normal.
¶ 4.Other