BE SURE to unplug the machine before making these tests! The motor runs on approximately 310 VDC and a shock could be lethal.
The direct drive brushless DC motor can be driven from zero to the maximum RPM in infinite steps in either direction. There are 36 poles on the stator and 12 permanent magnets on the inside of the rotor. A cracked magnet will cause the motor to stall, generating an LE or Lock Error code on the display.
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The stator can be tested either from its connector, the mid-way connector (in the lower left part of the machine as you face the back of it), or from the connector at the main board. Disconnect before reading the resistance with an ohmmeter. All test points should read approximately the same resistance. 15, 15, and 14 would be good. 14, 15, and 1 would indicate a failed coil in the stator 1 to 2 5 ~ 15 ohms 2 to 3 5 ~ 15 ohms 1 to 3 5 ~ 15 ohms |
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