Nortel Meridian SuperNode SL-100 Reference Manual page 127

9-2 Hardware maintenance tools
Figure 1 Location of LED on faceplate
When installing intelligent peripheral cards, watch the status LED for an
indication of card status. If the self test passes successfully, the LED flashes
and remains lit until the card is returned to service. If the self test fails, the
LED lights steadily and remains lit.
When a green LED is steadily lit, it indicates that the card is operating
normally. When a red LED is steadily lit, it indicates that the card, or a unit on
the card, is disabled.
Note: The shape of the LED (round or square) does not indicate a
difference in function.
The following table gives two examples of LED indications.
Table 9-1 Sample LED Indications
Type of card
Common equipment
power supply
Digital line card
555-4001-129 Standard 08.01 November 2000
IPE status LED
A
Two-digit maintenance display
1
9 pin RS-232 monitor port
LED color
green
red
Status
LED lit = operation
normal
LED lit = disabled