Panasonic KX-T336 System Reference Manual page 1460

3.06 Expansion shelf power down ( DC )
Error Code
Possible cause of
the malfunction
Countermeasures
Note
050n
n = 1 : Expansion Shelf 1
2 : Expansion Shelf 2
1) Power switch of the Expansion Shelf n (n=1 or 2) is turned off.
2) Malfunction of Power Supply Unit of the Expansion Shelf, or trouble with the
Power Supply System(Backboard, CPU card) of the shelf
Did the above item 1) occur at the
recorded time of the Error Log ?
No
Is a new error recorded in the Error
Log, when the RESET button is
pressed ?
Yes
Does the trouble occur frequently ?
Replace the Power Supply Unit
No change in
condition
No change in
condition
*It is recommended to have a current copy of the program on disk or tape to
facilitate accurate and rapid recovery.
No
Yes
Replace the CPU card*
Replace the Expansion Shelf
End
14-E-9
Yes
No
OK
OK