Panasonic KX-TD500 Installation Manual page 251

5.2 Troubleshooting Guide
Calendar IC Stop
Error Code 1110 : Calendar IC R/W stop
1111 : Calendar IC stop
1.
Possible cause of
the malfunction
2.
Countermeasures
Note *It is recommended to have a current copy of the program on disk to facilitate
accurate and rapid recovery.
252
Count up of the calendar IC is stopped.
Calendar IC of the CPU card failure
Confirm the time displayed on the
PT.
Is the displayed time correct?
No
Is the time counting up?
No
Set the time from PT, maintenance
terminal.
Is the time set correctly and count -
ing up correctly?
Replace the CPU card*.
Yes
Yes
End
Troubleshooting