MD-MX30H
� The spindle motor does not rotate.
Is waveform output from the pins 24 and 25 of IC1201 in the step 4 of AUTO auxiliary adjustment mode of TEST mode? Yes Is waveform output from the pins 9 and 10 of IC1601 and the pins 5 and 6 of CN1402? Yes Replace with a spindle motor (complete). Check IC1601, CN1402, and soldering of mechanism switch PWB. No Check the pins 24 and 25 of IC1201, soldering of peripheral circuit, and parts.
No
� The sled motor does not rotate.
Do the pins 22 and 23 of IC1201 change with the button? No Do the pins 14 and 15 of IC1601 and the pins 3 and 4 of CN1402 change with the / button? Yes Does voltage of the + and - terminals on the sled motor change with the / button? Check the soldering connected to the sled motor and for disconnection. No Check IC1601 and soldering of CN1402. / Yes Check the waveform of pins 22 and 23 of IC1201, peripheral parts, and soldering.
