Nortel Networks CVX 600 manual Following figure shows the LEDs on the Optical DAC-SM

Chassis Connections

Checking the LEDs

Optical DAC

The following figure shows the LEDs on the Optical DAC-SM:

	Good
STM1/OC32x		Redun	LOFLOS
	Pwr	Fail		A1	B1	A2	B2

CVX-0144B

LEDs on the Optical DAC-SM

The following table describes the LEDs on the Optical DAC-SM:

LED	State	Meaning
Power	Off	Power off
	On (green)	Power on
Good	On (green)	Successful system boot: no errors
		detected
	Off	No power: failure detected or on standby
	Flashing green	Code loading during system boot
Fail	Off	No power
	On (red)	Failure detected
Redun	Off	No power or no redundancy
	On (green)	A working redundant configuration
LOF	Off	Normal
	On (orange)	The SONET/SDH framing bytes for A1 or
		A2 are wrong or corrupted.
LOS	Off	Normal
	On (orange)	The designated port has a loss of carrier
		condition, due to a faulty connection with
		an SC connector on the receive side or a
		physical break in the fiber.

Note: There are no LEDs on the Optical DAC-LTMs.

296-1011-202 Rel. 5.0, Doc. Rev. 02.01 2-51