Symptom-to-FRU Index (Netfinity EXP15 - 3520)

Symptom-to-FRU Index

Use this chart to find solutions to problems that have definite symptoms.

Problem Indicator	FRU / Action
Amber LED On (Front Panel)	1. Hard Disk Drive
Amber and Green LED	1. Host issued a drive rebuild command
Flashing (Front Panel)
Amber LED On	1. Fan
Amber LED On (ESM Board)	1. ESM board
	2. Check for fan fault LED
	3. Unit is overheating. Check temperature.
Amber LED On, Green LED Off	1. Turn Power Switch On
	2. Power cord
	3. Reseat Power Supply
	4. Power Supply
Amber and Green LEDs On	1. Power Supply
Amber and Green LEDs Off	1. Reseat hard disk drive
	2. Hard Disk Drive
All Green LEDs Off	1. Check AC voltage cabinet AC
	voltage line inputs.
	2. Power Supplies
	3. Mid-plane board
Intermittent power loss to	1. Check AC voltage line inputs, and
Expansion Unit	cabinet power components.
	2. Power Supplies
	3. Mid-plane board
One or more Green LEDs Off	1. Turn Power Switch On
	2. Power Cord
	3. Reseat Power Supply
	4. Power Supply
One or more Green LEDs Off	1. No activity to the drive
	2. This can be normal activity
One or more Green LEDs Off	1. Use SCSI RAID Manager to check
(All Hard Disk Drives or	drive status
those on one bus)	2. SCSI Cables
	3. ESM Board
	4. Mid-plane board
One or more Green LEDs Off	1. Affected CRU
(Several CRUs)	2. ESM Board
	3. Mid-plane board Check SCSI cables
Unable to access drives on	1. Check SCSI cables and connections
one or both SCSI busses	2. Option switch 2 must be set to off
(Drives and SCSI Bus)	3. ESM board
Intermittent Power Loss	1. AC power or plug
(Some or all CRUs)	2. Power supply CRU
	3. Mid-plane
Random errors	1. Mid-plane board
	2. Make sure option switches 1 and 2 are set to Off

NOTE: If you cannot find the problem in the troubleshooting charts, test the entire system.
See the server documentation for more detailed information on testing and diagnostic tools.