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(PS_ON asserted, PS_PWRGOOD not asserted) Pb11 1- Blink 2- Off 3- Blink 4- Blink PSU Cable Failure All PSU cables may not be properly connected to system board. (PS_ON asserted, missing a main power rail) Pb12 1- Blink 2- Blink 3- Off 4- Off System board Regulator Failure A power failure has been detected in one of the onboard system board regulators. This could be caused by a failed system board component or by a plug-in device creating a short on a regulated power rail. (PS_ON asserted, PS_PWRGOOD asserted, SYS_PWRGOOD de-asserted) Pb13 1- Blink 2- Blink 3- Off 4- Blink Mismatch Hardware detected a population incompatibility with a critical system component such as CPU, VRM, PSU, or MEMORY RISER. Pb14 1- Green 2- Green 3- Green 4- Off - Reserved Reserved Pb15 1- Green 2- Green 3- Green 4- Green - Reserved Reserved State Light Pattern ( 1 2 3 4 ) Light Description State Name State Assignment State Description S0a 1- Off 2- Off 3- Off 4- Off OFF OFF Power light Off. No power is supplied to the system. S0e 1- Off 2- Off 3- Off 4- Off ON Normal Operation, ACPI S0 Power light Solid Green. System has successfully booted and is operating normally. S1 1- Off 2- Off 3- Off 4- Solid RCM System is in Recovery Mode BIOS checksum failure was detected and the system is now in recovery mode. S2 1- Off 2- Off 3- Solid 4- Off CPU CPU CPU configuration activity is in progress or a CPU failure was detected. S3 1- Off 2- Off 3- Solid 4- Solid MEM Memory Memory subsystem configuration activity is in progress. Appropriate memory modules were detected but a memory failure has occurred. S4 1- Off 2- Solid 3- Off 4- Off PCI PCI device PCI device configuration activity is in progress or PCI device failure was detected. Beep Codes When errors occur during a boot routine that cannot be reported on the monitor, the computer may emit a beep code that identifies the problem. The beep code is a pattern of sounds: for example, one beep followed by a second beep, then followed by a burst of three beeps (code 1-1-3) means that the computer was unable to read the data in nonvolatile random-access memory (NVRAM). If the system loses power and beeps constantly when you turn it back on, the BIOS is probably corrupted. S5 1- Off 2- Solid 3- Off 4- Solid VID Video Card Video subsystem configuration activity in progress or video subsystem failure. S6 1- Off 2- Solid 3- Solid 4- Off STO Storage Storage device configuration in progress or storage subsystem failure. S7 1- Off 2- Solid 3- Solid 4- Solid USB USB USB subsystem configuration activity in progress or USB subsystem failure. S8 1- Solid 2- Off 3- Off 4- Off MEM Memory Memory subsystem configuration activity is in progress. No memory modules were detected. S9 1- Solid 2- Off 3- Off 4- Solid MBF System board Fatal system board failure detected. S10 1- Solid 2- Off 3- Solid 4- Off MEM Memory Memory subsystem configuration activity is in progress. Memory modules have been detected but appear to be incompatible or in an invalid configuration. S11 1- Solid 2- Off 3- Solid 4- Solid PRV Other pre-video activity Indicates routine system activity preceding video initialization. S12 1- Solid 2- Solid 3- Off 4- Off CFG Resource configuration System resource configuration in progress. S13 1- Solid 2- Solid 3- Off 4- Solid Reserved Reserved for future use. This pattern is being considered to indicate the Visual Off state on the Dimension systems. S14 1- Solid 2- Solid 3- Solid 4- Off POV Other post-video activity Indicates routine system activity subsequent to video initialization. S15 1- Solid 2- Solid 3- Solid 4- Solid STD Boot hand off Indicates End of POST process. Lights are normally in this state briefly as POST completes. Once the hand-off to the OS is done, the lights turn off and transition to S0e state. System Beep Codes Beep Code Description Beep Code Description 1-1-2 CPU register test in progress 2-4-3 1st 64 K RAM chip or data line failure - bit E 1-1-3 CMOS read/write test in progress or failure 2-4-4 1st 64 K RAM chip or data line failure - bit F 1-1-4 BIOS ROM checksum in progress or failure 3-1-1 Slave DMA register test in progress or failure 1-2-1 Timer Test in progress or failure 3-1-2 Master DMA register test in progress or failure 1-2-2 DMA initialization in progress or failure 3-1-3 Master IMR test in progress or failure 1-2-3 DMA page register read/write test in progress or failure 3-1-4 Slave IMR test in progress or failure 1-3-1 RAM refresh verification in progress or failure 3-2-2 Interrupt vector loading in progress 1-3-2 1st 64 K RAM test in progress or failure 3-2-4 Keyboard controller test in progress or failure 1-3-3 1st 64 K RAM chip or data line failure (multi bit) 3-3-1 CMOS power fail and checksum test in progress 1-3-4 1st 64 K RAM odd/even logic failure 3-3-2 CMOS Config info validation in progress 1-4-1 1st 64 K RAM address line failure 3-3-3 RTC/Keyboard controller not found 1-4-2 1st 64 K RAM parity test in progress or failure 3-3-4 Screen memory test in progress ...