Cisco Systems CHAS-7507, MAS-7507, MAS-7K manual Troubleshooting the Installation, Power Supply LEDs

Verifying the Installation

Troubleshooting the Installation

Follow the procedures in this section if the system does not restart and boot as expected. Most often, problems you encounter while replacing the components in a new chassis are caused by power supplies or processor modules that are not properly installed and therefore are not connected properly inside the chassis. Use the following descriptions of the normal startup sequence to isolate the problem, then use the troubleshooting procedures whenever the system fails to operate as expected. If you are unable to successfully restart the system, contact a service representative.

LED Descriptions

Following are descriptions of the functions of the LEDs on the power supplies, chassis front panel, and the RP. These are the states you should observe when you restart the system.

Power Supply LEDs

Each AC-input power supply contains AC power and DC fail LEDs and a power switch as shown in Figure 12. The green AC power LED indicates that the power supply is turned on and is receiving input AC power. The yellow DC fail LED is normally off, but goes on if the power supply shuts down for any of the following reasons:

•Power supply DC section failure, which could be caused by loss of AC power (input line failure or operator turned off system power), or an actual failure in the power supply

•Power supply shutdown initiated by the power supply because it detected an out-of-tolerance temperature or voltage condition in the power supply

Figure 12 Power Supply LEDs

DC

FAIL AC

POWER

Captive installation screw

	DC
	FAIL
	AC
LEDs	POWER

Power supply front panel

AC power	I
receptacle
	O

H1314a

On/off switch Locking device

26Cisco 7000 and Cisco 7507 Chassis Replacement Instructions