IBM 866011U - Netfinity 5500 - 8660, Hardware Maintenance Manual

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System board LEDs
The system board contains three SCSI LEDs and a
processor LED that are turned on when the system detects
an error.
Notes
1. To locate the LEDs on the system board see
“System board component locations” on
page 255.
2. Check the system error log for additional
information before replacing a FRU.
System Board LED FRU/Action
Service Processor LED 1. System Board
SCSI LED(s) on
(Blinking or solid) 1. See “System board
SCSI LEDs.”
System board SCSI LEDs
A solid on or blinking system board SCSI LED indicated an
error was detected. (The blinks are followed by a pause.)
Notes
1. To locate the LEDs on the system board see
“System board component locations” on
page 255.
2. If you are instructed to flash the ServeRAID
controller on the system board, refer to the
ServerGuide that was shipped with the system
for instructions on creating a bootable ServeRAID
Flash diskette. Or refer to the WEB, see “Online
support” on page iv.
3. Check the system error log for additional
information before replacing a FRU.
System Board SCSI LEDs FRU/Action
1 blink followed by a
pause
(Boot block checksum error) 1. Check cables
2. System Board
3. DASD Backplane
2 blinks followed by a
pause
(DRAM parity error) 1. Check cables
2. System Board
3. DASD Backplane
3 blinks followed by a
pause
(Code block checksum
error, flash the ServeRAID
controller.) 1. Run the ServeRAID
Flash program.
2. Check cables
3. System Board
4. DASD Backplane
4 blinks followed by a
pause
(DRAM DATA) 1. Check cables
2. System Board
3. DASD Backplane
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