"indago" wrote in message
...
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?


It's probably trying to detect a disc by focussing the beam and it fails so
it shuts off, generally the cause of this is a bad pickup.