24 Service Manual (AA-RTDXC-TE, July 2004)

Diagnostics

56 Edge Switch 2/24 Service Manual

Verify the switch is connected to facility power and is powered on.

1. Ensure the AC power cord associated with the power supply (PS0 or PS1) is

connected to the rear of the switch and a facility power receptacle. If not,

connect the cord as directed by the customer.

2. Ensure the associated facility circuit breaker is on. If not, ask the customer set

the circuit breaker on.

3. Ensure the AC power cord is not damaged. If damaged, replace the cord.

Continue to the next step.

Inspect the switch for indications of being powered on, such as:

■ At the front bezel, an illuminated PWR or ERR indicator.

■ Illuminated LEDs adjacent to Fibre Channel ports.

■ Audio emanations and airflow from cooling fans.

Does the switch appear powered on?

YES NO

↓ Go to step 13.

Does inspection of a power supply indicate a failure (amber LED is illuminated)?

NO YES

↓ A redundant power supply failed. Go to step 8.

The switch appears operational. Exit MAP.

The switch AC power distribution system failed. Possible causes include failure

of:

■ Both power supplies.

■ The CTP card.

Does inspection of both power supplies indicate a dual failure (amber LED

illuminated on each power supply)?