Chapter IV Disassembly & Repair
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c. Check
Speed-regulating stepper motor
Check the resistance of the 2 diagonals in the
socket of stepper motor. The resistance shall be 50±1 Ω.
Replace the stepper motor in case of exceeding limit.
Rotate the center shaft of motor in case of stepper
motor. The center shaft shall not get stuck or loose.
Replace the stepper motor in case of the above problems.
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