Panasonic KX-T336 System Reference Manual page 541

3.05 Basic shelf power down (AC)
Error Code
0410
Possible cause of
the malfunction
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.
Countermeasures
".)
Note
Did the above item 1) or 2) occur at
the recorded time of the Error Log?
No
Yes
I
G
Does the troubles occur frequently ?
I
No
3l
+
1
I
Replace the Power Supply unit
No change in --'
OK
1
condition
"
Replace the CPU card'
1
No change in
OK
>
condition
v
I
Replace the Shelf
I
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