The Disc Does Not Loading; The Disc Is Not Up/Down; The Spin Motor Does Not Run - Sharp CD-C500Z Service Manual

Is the standby switch signal(L) being input to pin 50 of the
control microcomputer(lC801)?
Is the loading end switch signal (H) being input to pin 49
of the control microcomputer (IC801)?
/
Is the motor drive output being output from pins 3 and 10
of the motor driver (IC6)?
,
The loading motor (M3) is defective. Replace it.
The loading mechanism is faulty.
control microcomputer (IC801)?
Is the photo-interrupter signal (H) being input to pin 47 of
the control microcomputer (IC801)?
Is the motor drive output being output from pins 43 and 45
of the control microcomputer (IC801)?
Is the motor drive output being output from pins 2 and 10
of the motor driver (IC6)?
The lift motor (M4) is defective. Replace it.
The lift mechanism is faulty.
Check the output of pins 53 (DM+) and 54 (DM-)
of ICl.
i
Check the output of pin 2 of IC5.
Spin motor M2 is defective. Replace it.
o
Yes
Yes
Normal
,
f
Is there +10.5V at pins 7 and 9 of IC6?
No
The disc 1 switch is defective. Replace it.
No
No
I
Defective
No
Check to see if the PWB pattefn to
the power supply is damaged.
Check to see If the PWB pattern to
I