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< 1. No disk in tray, close tray
2. Press REW and FF buttons (<< >> at the same time) for about 4 seconds.
3. Popup displays "RESET OK! Macrovision reset Z501"

If you are unsuccesfull with the above code then it may be worth trying one of the resources below.

• JVC
• Panasonic
• Sony
• Kenwood
• LG
• Philips
• Pioneer
• Sanyo
• Technics
• Thomson
• Toshiba
• Yamaha