Sharp MD-MX30 Service Manual page 75

• 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).
• The sled motor does not rotate.
Do the pins 22 and 23 of IC1201 change with the
button?
Do the pins 14 and 15 of IC1601 and the pins 3 and 4 of CN1402
change with the / button?
Does voltage of the + and - terminals on the sled motor
change with the / button?
Replace the sled motor.
/
No
Yes
Yes
Check the pins 24 and 25 of IC1201, soldering of peripheral circuit,
No
and parts.
Check IC1601, CN1402, and soldering of mechanism switch PWB.
No
Check the waveform of pins 22 and 23 of IC1201, peripheral parts,
Yes
and soldering.
Check IC1601 and soldering of CN1402.
No
Check the soldering connected to the sled motor and for disconnection.
No
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MD-MX30/MX30W