Panasonic KX-T336 System Reference Manual page 1459

3.05 Basic shelf power down (AC)
Error Code
Possible cause of
the malfunction
Countermeasures
Note
0410
1) AC power cord is unplugged
2) Power Failure
3) Malfunction of Power Unit of the Basic Shelf or Power Supply System
(Backboard, CPU card) failure of the Shelf.
Did the above item 1) or 2) occur at
the recorded time of the Error Log?
No
Does the troubles occur frequently ?
Yes
Replace the Power Supply unit
No change in
condition
No change in
condition
1) It is desirable to store the system programming data on a floppy disc or tape
to facilitate accurate and rapid recovery, considering the limited running time
(about 3 years) of the backup battery in case the Power Failure continues for
a long time.
14-E-8
No
Replace the CPU card*
Replace the Shelf
End
(70695)
Yes
No
OK
OK