answersLogoWhite

0

Unplug your 487 ... time passes ... put your key in Prog mode - you need a manager key for this. press the C key - plug in the 487 ... lift your finger fron the C key. Move your manager key to off and A or B. Give it a try. If you get an error, press C key again. Try it again ... If that fails ... start over - press C and the key above it. The answer once was easily found at Royal ... but someone found out they could make $ by selling the owners manual literature - so that is gone. Good Luck

User Avatar

Wiki User

16y ago

What else can I help you with?