Service manual

Maintenance Analysis Procedures

3-13

Maintenence Analysis Procedures

MAP 0100: Power Distribution Analysis

This MAP describes fault isolation for theproduct power distribution

system, including defective AC power cords or power supplies. The

failure indicator is:

• Failure of the product to power on.

• Event codes observed at the Event Log (EFCM Basic Edition or

Element Manager interface).

Ensure the product is connected to facility power. Inspect the product

for indications of being powered on, such as:

• An illuminated PWR LED (green) or ERR LED (amber) on front

bezel.

• An illuminated LED (green) on active CTP card.

• Illuminated LEDs adjacent to Fibre Channel ports.

• At least one PWR OK LED (green) illuminated on a power

supply.

• Audio emanations and airflow from fans.

Is the product powered on?

YES NO

↓ A power distribution problem is indicated. Go to step 4.

Table 3-4 lists event codes, explanations, and MAP steps.

Table 3-4 MAP 100 Event Codes

Event

Code

Explanation Action

200 Power supply AC voltage failure. Go to step 3.

201 Power supply DC voltage failure. Go to step 3.

202 Power supply thermal failure. Go to step 3.

208 Power supply false shutdown. Go to step 3.