Lucent Technologies DEFINITY EXTENDER 1100 - Manual (Page 69)

Troubleshooting
4-4 Issue 1 June 1998
Table 4-1. LED Power up Sequences
LED Sequence Description
No LED blinks Error with hardware or AC
adapter.
First blink:
Red or Green
LED is not functioning properly
as units should blink Yellow.
Yellow EPROM Checksum test failed.
Faulty EPROM or Board
problem.
Yellow & 1 Red SRAM, Data test failed
Yellow & 2 Red SRAM Address test failed
Yellow & 7 Reds & 1 Green Passed all hardware tests