Sun Microsystems 6.0005E+11 manual Defective Power Supplies, 7Diagnosing Power Supply Problems

10

10.7 Defective Power Supplies

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The peripheral power supply and power/cooling modules are hot-pluggable.

Caution – Boards in slots adjacent to a modular power supply may overheat if the supply is removed and not replaced. The modular power supply provides cooling air to two board slots.

Caution – Do not hot-plug boards or modules if the peripheral power supply is defective. The hot-plug feature requires a working peripheral power supply for precharge current.

Begin	INDICATION	TEST/PROCEDURE	REFERENCE
	Peripheral power supply:
	System error message.
	Peripheral device or
	remote console (TTY A)
	fails
		Examine LEDs, system messages.	Table 9-1
		Before replacing module, verify:	Section 7.4.3, “Troubleshooting a
		Green LED off.	PCM.”
		Yellow LED may be on.
		Before replacing any other hot-
		pluggable devices, replace
	Modular power supply:	peripheral power supply first.
	System error message
	Board fails
		Module is ready for replacement if	Section 7.4.4, “Replacing a PCM.”
		the Yellow LED is on.

End

Figure 10-7Diagnosing Power Supply Problems

10-8 Ultra Enterprise 6000/5000/4000 Systems Manual—November 1996