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MD-E9000H
• The sled motor does not rotate.
No
Do the pin 23 of IC1201 change with the
/
button ?
Yes
No
Do the pins 14 and 15 of IC1601 and the pins 1 and 2 of CN1401
change with the / button ?
Check IC1601 and soldering of CN1401.
Yes
Does voltage of the + and - terminals on the sled motor
change with the / button ?
No
Check the soldering connected to the sled motor and for
disconnection.
Yes
Replace the sled motor.
• The spindle motor does not rotate.
Is waveform output from the pin 25 of IC1201 in the step 4 of
AUTO auxiliary adjustment mode of TEST mode ?
Check IC1601, CN1401, and soldering of mechanism switch PWB.
Is waveform output from the pins 9 and 10 of IC1601 and the
pins 5 and 6 of CN1401 ?
Replace with a spindle motor (complete).
No
No
Yes
Yes
Check the pin 25 of IC1201, soldering of peripheral circuit, and parts.
Check the waveform of pin 23 of IC1201, peripheral parts, and
soldering.
Check in the test mode
