Panasonic KX-TD500 Installation Manual page 296

Troubleshooting
(12) Echo back error
Error Code
Possible cause of
the malfunction
Countermeasures
Note
296
1300 xyy: Echo back error
x = 1 to 3: Shelf number
yy = 01 to 14: Slot number
1.
Defective FIFO (First In First Out) trouble with a card
2.
Input/Output trouble (CPU card, Shelf)
Check the status of the
associated card.
OK
Enter card test command from the
maintenance terminal.
Faulty
Replace the faulty LPR card.
Enter card test command from the
maintenance terminal.
Faulty
Replace the CPU card.*
Enter card test command from the
maintenance terminal.
Faulty
Replace the Shelf.
End
*It is recommended to have a current copy of the program on disk to
facilitate accurate and rapid recovery.
Faulty
OK
OK
OK
Enter INS (In-Service) command
from the maintenance terminal.
Installation Manual