Panasonic KX-TD500, Руководство по установке

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Troubleshooting
Installation Manual 293
(9) Basic shelf AC power down
Error Code 1200: Basic shelf AC power down
Possible cause of
the malfunction 1.
AC power cord is unplugged.
2.
Power Failure
3.
Malfunction of the Power Supply Unit of the Basic Shelf or Power
Supply System (Backboard, CPU card) failure of the Shelf
Countermeasures
Note *It is desirable to store the system programming data on a floppy disk
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.
Did the above item 1) or 2) occur
at the recorded time of the Error
Log?
Does the trouble occur frequently?
Replace the Power Supply Unit.
Replace the CPU card. *
Replace the Shelf.
End
Yes
No
OK
OK
No
Yes
No change in
condition
No change in
condition