2. Check the System Error Log for additional information before replacing a FRU.3. The DIMM error LEDs, processor error LEDs, and VRM error LEDs turn offwhen the system is powered down.Diagnostic Panel LED FRU/ActionAll LEDs off (Check System ErrorLog for error condition, then clearSystem Error Log when theproblem is found.)1. System Error Log is 75% full; clear the log.2. PFA alert; check log for failure; clear PFA alert; remove AC power for atleast 20 seconds, reconnect, then power up system.3. Run Information Panel diagnostics.CPU LED on (The LED next to thefailing CPU should be on.) 1. Processor 1 or 2.VRM LED on (The LED next tothe failing VRM should be on.) 1. Voltage regulator module indicated by the VRM LED on the systemboard that is turned on.2. Processor indicated by the Processor LED.DASD LED on (The Amber LEDlocated next to the drive bay thatthe failing drive is installed in willbe turned on. Only if RAID.)1. If installed, reseat I2C cable between Yuog DASD backplane and DASD I2Con planr (J9).2. Failing drive.3. Be sure the fans are operating correctly and the air flow is good.4. SCSI packplane.FAN LED on 1. Check individual fan LEDs.2. Replace respective fan.3. Fan Cable.4. System Board.5. Power Backplane Board.MEM LED on (The LEDs next tothe failing bank are on.) 1. Check system error log for failing DIMM socket number.2. Failing DIMM in slot J1-J4.NMI LED on 1. Reboot the system.2. Check the System Error Log.PCI A LED on 1. PCI Card in slot 1.2. Remove all PCI adapters from slots 1-5.3. System Board.PCI B LED on 1. Card in slots 2-3.2. Remove all PCI adapters from slots 1-5.3. System Board.PCI C LED on 1. Remove all PCI adapters from slots 4-5.2. System Board.PS1 LED on 1. Check the DC Good LED on power supply 1. If off, replace powersupply 1.2. Power Backplane.PS2 LED on 1. Check the DC Good LED on power supply 2. If off, replace powersupply 2.2. Power Backplane.84 Hardware Maintenance Manual: xSeries 342 Model 1RX, 2RX, 1TG, 2TG
