IBM EXP15, Hardware Maintenance Manual

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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
Flashing
(Front Panel) 1. Host issued a drive
rebuild command
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
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 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
(All Hard Disk Drives or
those on one Bus) 1. Use SCSI RAID
Manager to check
drive status
2. SCSI Cables
3. ESM Board
4. Mid-plane board
Netfinity EXP15 Type 3520
7