Juniper Networks G10 CMTS manual Power On the G10 Cmts, Power Fault

Power On the G10 CMTS

•	Table 40: Power Supply LEDs
•
•	POWER	FAULT		Potential Meaning	Action
•
	Green	Not illuminated		Normal operation	None
•
	Green	Red		Over-temperature	! Check that fan trays are operational (see step 5
•
•					on page 124).
					! Ensure all empty module slots and power supply
•
•					bays contain air management modules, panels,
					and filler panels.
•
					! Ensure air intakes and exhaust are not blocked.
•
•	Green	Red		Over-current or over power limit condition	Ensure that the correct number of power supplies are
•					installed to support the CMTS configuration.
•	Not illuminated	Red		Voltage input failure	Ensure that the external power sources are operating
•					within specification.
•	Not illuminated	Not illuminated		! Power supply not installed correctly.	! Power down the G10 CMTS and reinstall the
•				! No input power and no DC output from	power supply as described on “Install Power
					Supplies” on page 101. If power supply
•				other power supplies to illuminate FAULT
					redundancy is implemented, you can replace a
•				LED.
					power supply without powering down the
•
					system.
•					! Ensure that the external power sources are
•
					switched on.
•
•
•
•				If the POWER LED is not illuminated, the FAULT LED can be
•
•				illuminated red only if the DC output voltage is present
•				from other power supplies.
•
•
•		4.	Replace the power supply faceplate by aligning its four ball studs with the four power
•			supply faceplate clips and pressing the faceplate towards the chassis until it snaps into
•			place.
•
•		5.	Ensure that the fan tray LEDs (two in front, one in rear) are not illuminated (see Figure 4
•			on page 11 and Figure 7 on page 14 for the location of these LEDs). If any fan tray LED is
•			illuminated red, one or more fans in that tray has failed and you must replace the entire
•			tray (see “Replace a Fan Tray” on page 162).
•
•
•				To minimize the risk of damage to the G10 CMTS, you
•
•				should replace a failed fan tray as soon as possible to
•				ensure that proper air ventilation occurs throughout the
•				chassis.
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124 JUNOSg 3.0 G10 CMTS Hardware Guide