Panasonic KX-TD500 Installation Manual page 280

5.2 Troubleshooting Guide
(1) System Reset caused by CPU Runaway (Re-start Procedure)
Error Code
Possible cause of
the malfunction
Countermeasures
Note
280
1000 : Hard WDT overflow
1001 : Illegal interrupt
1002 : Soft WDT overflow
1.
External circumstance, such as induction noise
2.
Hardware is defective.
3.
The CPR software is terminated by executing illegal instruction.
4.
The CPR software is terminated by executing infinite loop.
Does the trouble occur frequently?
Yes
Re-programme the system programming data.
No change in
condition
No change in
condition
No change in
condition
Remove the LPR cards one by one.
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.
Replace the CPU card.*
Replace the TSW card.
Replace the Shelf.
Consult the Service Centre.
End
No
OK
OK
OK
OK
OK
Troubleshooting