Symptom-To-Fru Index - IBM EXP15 Hardware Maintenance Manual

Symptom-to-FRU Index

Use this chart to find solutions to problems that have
definite symptoms.
Problem Indicator
Amber LED On
(Front Panel)
Amber and Green LED
Flashing
(Front Panel)
Amber LED On
Amber LED On
(ESM Board)
Amber LED On, Green LED
Off
Amber and Green LEDs On
Amber and Green LEDs Off
All Green LEDs Off
Intermittent power loss to
expansion unit
One or more Green LEDs
Off
One or more Green LEDs
Off
One or more Green LEDs
Off
(All Hard Disk Drives or
those on one Bus)
Netfinity EXP15 Type 3520
FRU/Action
1. Hard Disk Drive
1. Host issued a drive
rebuild command
1. Fan
1. ESM board
2. Check for fan fault
LED
3. Unit is overheating.
Check temperature.
1. Turn Power Switch
On
2. Power cord
3. Reseat Power Supply
4. Power Supply
1. Power Supply
1. Reseat hard disk
drive
2. Hard Disk Drive
1. Check AC voltage
cabinet AC voltage
line inputs.
2. Power Supplies
3. Mid-plane board
1. Check AC voltage
line inputs, and
cabinet power
components.
2. Power Supplies
3. Mid-plane board
1. Turn Power Switch
On
2. Power cord
3. Reseat Power Supply
4. Power Supply
1. No activity to the
drive
2. This can be normal
activity
1. Use SCSI RAID
Manager to check
drive status
2. SCSI Cables
3. ESM Board
4. Mid-plane board
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