Symptom-to-FRU Index (3517)

Symptom	FRU/Action
The green light for the power switch	1. Verify that the power cord to the 3517 has continuity.
is not on, and/or the power supply	2. Verify that the power source has been wired correctly
and fan is not running.	has the correct voltage.
	3. Verify that the voltage selection switch is set
	to match the power source
	4. Verify that the power cord is plugged into the
	3517 and the power source.
	5. Verify that the power switch is on.
	6. If the problem still exists, replace the power supply.
The green light is flashing, and the	1. Press the power switch on the hot-swap hard disk
yellow light is off for all	drive in hot-swap bay 0.
hot-swap hard disk drives.	2. If the green light on the hot-swap hard disk drive
	continues to flash, replace the cooling fan.
	3. If the green light on the hot-swap hard disk drive is
	on and not flashing, press the power switch on the
	remaining hot-swap hard disk drives to turn their
	green lights on. The green light should not be flashing.
The green light for the power switch is	1. Verify that the system SCSI cable is
on, and the green light on all hot-swap	correctly connected to the 3517 storage unit
hard disk drives is not flashing, but	and the system
no devices are available to the system.	2. Verify that the internal SCSI cables to the backplane
	are correctly connected.
	3. Send the command from the system to spin-up the drives
	Refer to the system publications for more information
	for more information. Remove the following FRUs, then
	run the system diagnostics after each FRU is replaced.
	a. System SCSI Cable
	b. Internal SCSI Cable
	c. Backplane
	4. If there is still a problem after all the FRUs have been
	replaced, one of the hot-swap hard disk drives may be
	defective.
	a. Unseat all of the hot-swap hard disk drives
	except the one in hot-swap bay 0.
	b. Disconnect the internal SCSI cable, if installed,
	from the manual-plug devices. (tape)
	c. Send the command from the system to spin-up the
	drives. Refer to the systems publications for
	more information.
	5. If the command is successful, reseat the next hot-swap
	hard disk drive and send the command from the system
	to spin-up the drive.
	6. Repeat step 5, until the failure symptom returns. Then
	remove and replace the FRUs in the following order, and
	run the system diagnostics after each FRU is replaced.
	a. Hot-swap hard disk drive carrier.
	a. Hot-swap hard disk drive.
One hot-swap hard disk drive is not	1. Verify that the hot-swap hard disk drive carrier
available to the system	cables are correctly connected
	2. If the green light on the hot-swap hard disk drive is
	flashing, press the power switch on the drive.
	3. Send the command from the system to spin-up the drive.
	Refer to the systems publications for more information.
	4. If the hot-swap hard disk drive is still not available to
	the system, remove and replace the FRUs in the following
	order, and run the system diagnostics after each FRU is
	replaced.
	a. Hot-swap hard disk drive carrier address cable.
	b. Hot-swap hard disk drive carrier.
	c. Hot-swap hard disk drive.
	d. Backplane.
One manual-plug device is not	1. Verify that all cables are properly connected
available to the system.	2. Send the command from the system to start the drive.
	3. If the manual-plug device is still not available to the
	system, exchange the FRUs in the following order, then
	run the system diagnostics after each FRU is replaced.
	a. Interposer on the manual-plug tape drives.
	b. Manual-plug device.
	c. Internal SCSI cable.

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