Nortel DMS-100 Series Maintenance Manual page 33

Figure 2-6 Circuit cards with status indicators
NTTR60AA
Fail
The following table lists the status indicators on the circuit cards shown in the
previous figure and identifies their functions.
Table 2-4 System status indicators (Sheet 1 of 2)
Indicator name
In service
In service
ESA
NT6X53AA
Converter fail
Test points
+5 V
+15 V
Common
Circuit card LED color
NTTR73AA Green
NTTR77AA Green
NTTR77AA Red
DMS-100 Family NA100 Star Remote System XPM15 and up
Star Remote System hardware 2-13
NTTR73AA NTTR77AA
In
Service
In
Service
Function
Indicates this UMP is in service
Indicates this unit is in service
Indicates this unit is in ESA mode
Clock
Lock
ESA