CD Player malfunction when first turned on
I have disassembled the unit so that I can observe the CD player in action. There were sounds prier to disassembly that were unexplained. In operation, with observation, the carriage for the laser moves with a threaded shaft. The purpose is to keep time with the advance of the recorded data. The whole mechanism is jumping back and forth erratically for a few seconds. Then briefly the CD will work correctly followed by more erratic movement. Left alone this jerking and momentary playing will continue for thirty to forty minutes. After this period the CD unit will play normally until the whole unit is turned off for several hours. Is this a circuit problem or a mechanical problem with the player itself? What would cause either problem. If it is mechanical, can the CD player be fixed or, if not can I buy a replacement? If it is a circuit problem, what approach to debug the circuit controlling the CD operation could you suggest?
The Bose is a Model AWRCC1 that plays one CD at a time, reducing the complexity of the player. Rather than a player that holds several disks and change disks internally.