The following LED/Beep Code Charts are based upon the categories listed below: * 'M' and L stand for "Most Significant" LED group and "Least Significant" LED group, respectively (from top to bottom as you view the LEDs on the MLB). * '1' indicates that the LED is on, and '0' indicates the LED is off. * Beep codes are shown only where applicable; "L" is a long beep, "s" is a short one. A code of "1s,2L" means one short and two long beeps. POST Informational Codes M L Definition Beep Codes Possible Cause/Action to Repair ==================================================================================================================================== 1101 1111 EV6 initialized (hung w/no LED's on) CPU & MLB dip switch, CPU J9@1-2, MLB J44@2-3. Reseat CPU card 1101 1110 TIG bus inititializing and testing (LEDs now visible) CPU & MLB dip switch Reseat CPU card. Replace bad CPU card 1101 1101 Tsunami chip set initializing and testing CPU & MLB dip switch Reseat CPU card. Replace bad CPU card 1101 1100 PCI initializing and testing MLB J28@1-2 Reseat CPU card. Replace bad PCI card Replace bad CPU card or MLB 1101 1011 ISA bridge, super I/O initizing (beeps enabled) Reseat CPU card Replace bad PCI option Replace MLB 1101 1010 Memory sizing & DIMM parameter check Reseat DIMMs Replace bad DIMM Unsupported DIMM type or size 1101 1001 Memory configuration (set up tsunami) CPU card malfunction Replace CPU Card 1101 1000 Bcache data path test CPU & MLB dip switch Reseat CPU card Replace bad CPU card 1101 0111 Bcache data march test CPU & MLB dip switch Reseat CPU card Replace bad CPU card 1101 0110 Reserved 1101 0101 Reserved 1101 0100 Memory data path test Reseat & match DIMMs in bank Replace bad DIMM 1101 0011 Memory address test Reseat & match DIMMs in bank Replace bad DIMM 1101 0010 Memory pattern test Reseat & match DIMMs in bank Replace bad DIMM 1101 0001 Loading code from flash ROM to memory Reseat CPU card Replace CPU or MLB 1101 0000 Control transfer to loaded code Reseat CPU card Replace CPU or MLBN Non-Fatal codes M L Definition Beep Codes Possible Cause ==================================================================================================================================== 1100 1111 loading code from floppy Implies bad ROM data, use flash recovery disk 1110 1111 set & measured CPU speed differ Check CPU speed switches MLB malfunction 1110 1110 Bcache Data disabled 1S,1L CPU card malfunction 1110 1101 Bcache data lines test error 1S,2L CPU card malfunction 1110 1100 Bcache data march test error 1S,2L CPU card malfunction 1110 1011 Bcache ECC data lie error 1S,2L CPU card malfunction 1110 1010 Bcache ECC data march error 1S,2L CPU card malfunction 1110 1001 Memory data path error 1S,3L Reseat & match DIMMs in bank Replace bad DIMM 1110 1000 Memory address path error 1S,3L Reseat & match DIMMs in bank Replace bad DIMM 1110 0111 Memory pattern test error 1S,3L Reseat & match DIMMs in bank Replace bad DIMM 1110 0110 Memory array zero not usable 1S,4L Check Array 0 DIMMS Reseat DIMMs Replace bad DIMM 1110 0101 DIMM compatibility error 2S,1L Ensure all DIMMs are of a supported type & vendor 1110 0100 ISA super IO chip error 2S,2L Reseat CPU card Check cables and PCI options MLB malfunction 1110 0011 Real time clock error 2S,3L MLB malfunction Replace lithium battery 1110 0010 Bad header in flash ROM image 2S,4L Implies bad ROM data, use flash recovery disk 1110 0001 Chksum err in flash ROM image 2S,5L Implies bad ROM data, use flash recovery disk 1110 0000 Error loading from floppy 2S,6L Reseat CPU card Check cables and PCI options MLB malfunction Fatal codes M L Definition Beep Codes Possible Cause ==================================================================================================================================== 1111 1111 Trap occurred 3S,5L CPU card malfunction 1111 1110 CPU Built in Self Test error CPU card malfunction 1111 1101 TIG bus verify error CPU card malfunction 1111 1100 Illegal CPU speed switch setting Check CPU speed switch settings 1111 1011 Tsunami init/verify error CPU card malfunction 1111 1010 No usable memory detected 3S,1L Reseat & match DIMMS Ensure supported type & vendor & good 1111 1001 Flash ROM data path read error 3S,2L Implies bad ROM data, use flash recovery disk 1111 1000 PCI data path error 3S,3L Reseat CPU card and PCI options Replace MLor CPU card 1111 0111 Floppy driver error 3S,4L Reseat CPU card, Check cables and PCI options Replace MLB 1111 0110 Reserved 1111 0101 Reserved 1111 0100 Reserved 1111 0011 Reserved 1111 0010 Reserved 1111 0001 Reserved 1111 0000 Reserved