IBM 86607SU Hardware Maintenance Manual - Page 298

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 Service Processor LED SCSI LED(s) on (Blinking or solid) FRU/Action 1. System Board 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 1 blink followed by a pause (Boot block checksum error) 2 blinks followed by a pause (DRAM parity error) 3 blinks followed by a pause (Code block checksum error, flash the ServeRAID controller.) 4 blinks followed by a pause (DRAM DATA) FRU/Action 1. Check cables 2. System Board 3. DASD Backplane 1. Check cables 2. System Board 3. DASD Backplane 1. Run the ServeRAID Flash program. 2. Check cables 3. System Board 4. DASD Backplane 1. Check cables 2. System Board 3. DASD Backplane 290 Netfinity Server HMM