Seagate ST3390N Guía de instalación descargar pdf (Pagina 294)

100

101

16-22 Troubleshooting startup problems

Power problems

Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999

Resolving AC system

power problems

To resolve AC system power problems, follow these steps.

Testing the power

harness and pedestal

power supply

To test the power harness and pedestal power supply, follow

these steps.

Step Action

1 Remove the front doors from all modules in the system.

2 If no LEDs are lit on any module above a certain module, go to

the procedure that follows and test the pedestal power supply

and power harness at the lowest module that has no lit LEDs.

3 If no LEDs, including the LEDs on the CEPS, are lit on a single

module or on a single side of a module, go to “Testing the

CEPS” on page 16-23.

Note:

A side of a module that contains a power supply but no

PCPs or disk drives will indicate a CEPS failure.

Step Action

1 Check the AC voltage at the CEPS connectors (see “Front view

of module, CEPS removed” on page 16-23).

a. Switch off both breakers on the module.

b. Remove both CEPS.

c. Check the voltage at the pins shown in “Front view of

module, CEPS removed” on page 16-23.

d. If the voltage is incorrect, refer to

SL-1 Fault Clearing

(NTP 553-3001-510).

2 If the voltage is correct, continue with “Testing the CEPS” on

page 16-23.

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