Panasonic KX-TD500 Installation Manual page 279

(10) Expansion shelf AC power down
Error Code
Possible cause of
the malfunction
Countermeasures
Note
Troubleshooting
1201 : Expansion shelf 1 AC power down
1202 : Expansion shelf 2 AC power down
1.
Power failure
2.
Power Supply Unit malfunction of the Expansion Shelf n(n=1 or 2),
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 there a new error message 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 programme on disk to
facilitate accurate and rapid recovery.
No
Yes
Replace the CPU card.*
Replace the Shelf.
End
5.2 Troubleshooting Guide
Yes
No
OK
OK
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