Panasonic KX-TD500 User Manual page 205

Alarm LED
(When a problem occurs)
A :
LED on PT / Top Shelf / Card..........OFF
B :
LED on PT / Top Shelf..........OFF
C :
LED on PT..........OFF
The Alarm light turns red automatically. The corresponding error message is shown on the display
PT automatically, if it is idle, by pressing the red lit Alarm button.
If the red lit Alarm button is pressed again, whether the problem is solved or not, the Alarm light
goes off and the display PT shows the initial display ("Date and Time" or "Self-Extension number").
D:
LED on PT / Top Shelf...........................OFF
The Alarm light turns red and the corresponding error message is shown on the display PT
automatically, if it is idle. This situation continues until the problem will be solved.
(When the problem is solved)
A/B/C :
LED on PT..........ON (no change)
LED on Top Shelf / Card..........ON
D :
LED on PT / Top Shelf..........ON
When the problem is solved, the Alarm light goes off and the display PT shows the initial display.
Operator / Manager Operation
ON
ON
ON
OFF
OFF
ON
3.2 System Control
205