Numeric Coprocessor Problems
If you have installed a numeric coprocessor but it doesn’t seem to be operating properly, check the documentation that came with it for troubleshooting information and for any diagnostic procedures you can perform. Contact your Authorized Epson Servicer or call the Epson Connection if you cannot solve the problem.
CMOS Battery Problems
The Dallas® clock chip in your computer preserves the contents of CMOS RAM even when the power is off. This battery should last more than a year before you need to replace it. When this battery’s life is exhausted, you see a message similar to the following:
CMOS battery has failed
Contact your Authorized Epson Servicer to install a new battery for you or call the Epson Connection for referral information.