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Sony C450 DVD System Repair

Mukul Posted Oct 08, 2005

Need a schematic or service manual and some help with repairs to my Sony C450 DVD 5 disk surround system.

My Sony C450 surround system will not open its disk tray and disk playback has become impossible. Functions can be changed as normal but when in DVD mode it is always stuck up in an abnormal state showing '1Disk' and 'Repeat'. Other functions like Tuner and Audio 1 and Audio 2 work fine. Checked the power supplies all of which seem fine. Manually operating the disk changer mechanism shows normal operation possible if motors were to have sequenced under command and all sensors and microswitches are functional and in the right state and able to detect a disk in and out. The power amps are OK. Suspect problem is with the controller board but have no schematic or service manual to verify. Has any one come across this problem and knows the fix. Would appreciate if anyone could help with a scehmatic or service manual


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