indago writes:

I am working on a Sony CD Compact Player D-131. Upon starting, the laser
head moves away from the motor drive a couple of times, returning, and then
stops. The disc motor does not turn. I checked the motor by unplugging it
from the circuit board and putting 1.5 volts on the connection and it turns
OK. The readout starts out reading 00, then no disc. Starting the disc
turning should be one of the first items on the CD player agenda. What
could be the cause of its not turning?

Do you know this for a fact? Many CD players won't spin the disc until
focus is established. For portables it is often the case that the disc
spins at the same time but not always.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the Feedback Form at repairfaq.org. Thanks.