I found on page 42 of the User Documentation that code, and it says to:
Switch OFF the Main Power. Wait approximately 5 seconds. Then switch ON the Main Power. If the Status Code continues, call for service.
Wife's XC 1040 has worked well for years. Today she tried copying and "L1" code came up. Turned machine off and restarted. Got a sound and code reappeared. How to clear code.