Netfinity EXP15 - Symptom-to-FRU Index

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Document ID: MCGN-46BN2U

Netfinity EXP15 - Symptom-to-FRU Index

Applicable to: World-Wide

Source: Hardware Maintenance Manual

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. Drive CRU

Amber and Green LED Flashing
(Front Panel)

1. Host issued a drive rebuild command

Amber LED On
(Fan CRU)

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
(Power Supply CRU)

1. Turn Power Switch On
2. Power cord
3. Reseat Power Supply
4. Power Supply CRU

Amber and Green LEDs On
(Power Supply CRU)

1. Power Supply CRU

Amber and Green LEDs Off
(Drive CRU)

1. Reseat drive CRU
2. Drive CRU

All Green LEDs Off
(All CRUs)

1. Check AC voltage cabinet AC voltage line inputs.
2. Power Supplies
3. Mid-plane board

Intermittent power loss to Expansion Unit

1. Check AC voltage line inputs, and cabinet power components.
2. Power Supplies
3. Mid-plane board

One or more Green LEDs Off
(Power Supply CRU)

1. Turn Power Switch On
2. Power cord
3. Reseat Power Supply
4. Power Supply CRU

One or more Green LEDs Off
(One or Two Drive CRUs)

1. No activity to the drive
2. This can be normal activity

One or more Green LEDs Off
(All Drive CRUs or those on one Bus)

1. Use SCSI RAID Manager to check drive status
2. SCSI Cables
3. ESM Board
4. Mid-plane board

One or more Green LEDs Off
(Several CRUs)

1. Affected CRU
2. ESM board
3. Mid-plane board Check SCSI cables

Unable to access drives on one or both SCSI buses
(Drives and SCSI Bus)

1. Check SCSI cables and connections
2. Option switch 2 must be set to off.
3. ESM board

Intermittent Power Loss
(Some or all CRUs)

1. AC power or plug
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 using this Symptom-to-FRU Index, test the entire system. See the server documentation for more detailed information
on testing and diagnostic tools.

Search Keywords

Document Category

Diagnostics

Date Created

25-03-99

Last Updated

24-05-99

Revision Date

25-05-2000

Brand

IBM PC Server

Product Family

Rack/Storage Enclosures

Machine Type

3520

Model

All

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes

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

	Search Keywords
	Document Category	Diagnostics
	Date Created	25-03-99
	Last Updated	24-05-99
	Revision Date	25-05-2000
	Brand	IBM PC Server
	Product Family	Rack/Storage Enclosures
	Machine Type	3520
	Model	All
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes