Panasonic KX-TD500 Installation Manual page 252

CPU RAM backup battery down
Error Code 1112
1.
Possible cause of
the malfunction
2.
Countermeasures
Yes
Note *1. Consult the nearest service center
*2. It is recommended to have a current copy of the program on disk to facilitate
accurate and rapid recovery.
Troubleshooting
Defective rechargeable lithium battery on the CPU card
Defective CPU card
After replacing lithium battery,
turn on the POWER switch.
Is there a new related error mes-
sage in the Error Log?
Replace the CPU card.
Enter the system data.
End
*1
No
*2
5.2 Troubleshooting Guide
253