RS/6000 Diagnostic LEDs

     _________________________________________________________________
     TITLE : Diagnostic LED numbers and codes.
     Stolen From: http://www.unixiron.org/techtips/rs6kled on 12-6-2004
     DATE : 07/14/2002
     VERSION : 1.2
     -----------------------------------------------------------------
     Built-In Self-Test (BIST) Indicators
     ------------------------------------
     100 BIST completed successfully; control was passed to IPL ROS.
     101 BIST started following reset.
     102 BIST started, following the system unit's power-on reset.
     103 BIST could not determine the system model number.
     104 Equipment conflict; BIST could not find the CBA.
     105 BIST could not read from the OCS EPROM.
     106 BIST failed: CBA not found
     111 OCS stopped; BIST detected a module error.
     112 A checkstop occurred during BIST; checkstop results could not
         be logged out.
     113 Three checkstops have occurred.
     120 BIST starting a CRC check on the 8752 EPROM.
     121 BIST detected a bad CRC in the first 32K bytes of the OCS EPROM.
     122 BIST started a CRC check on the first 32K bytes of the OCS EPROM.
     123 BIST detected a bad CRC on the OCS area of NVRAM.
     124 BIST started a CRC check on the OCS area of NVRAM.
     125 BIST detected a bad CRC on the time-of-day area of NVRAM.
     126 BIST started a CRC check on the time-of-day area of NVRAM.
     127 BIST detected a bad CRC on the 8752 EPROM.
     130 BIST presence test started.
     140 Running BIST. (Box Manufacturing Mode Only)
     142 Box manufacturing mode operation.
     143 Invalid memory configuration.
     144 Manufacturing test failure.
     151 BIST started AIPGM test code.
     152 BIST started DCLST test code.
     153 BIST started ACLST test code.
     154 BIST started AST test code.
     160 Bad EPOW Signal/Power status signal.
     161 BIST being conducted on BUMP I/O.
     162 BIST being conducted on JTAG.
     163 BIST being conducted on Direct I/O.
     164 BIST being conducted on CPU.
     165 BIST being conducted on DCB and Memory.
     166 BIST being conducted on Interrupts.
     170 BIST being conducted on Multi-Processors.
     180 Logout in progress.
     182 BIST COP bus not responding.
     185 A checkstop condition occurred during the BIST.
     186 System logic-generated checkstop (Model 250 only).
     187 Graphics-generated checkstop (Model 250).
     195 Checkstop logout complete
     199 Generic SCSI backplane
     888 BIST did not start.


     
     Power-On Self-Test (POST) Indicators
     ------------------------------------
     200 IPL attempted with keylock in the Secure position.
     201 IPL ROM test failed or checkstop occurred (irrecoverable).
     202 Unexpected machine check interrupt.
     203 Unexpected data storage interrupt.
     204 Unexpected instruction storage interrupt.
     205 Unexpected external interrupt.
     206 Unexpected alignment interrupt.
     207 Unexpected program interrupt.
     208 Unexpected floating point unavailable interrupt.
     209 Unexpected SVC interrupt.
     20c L2 cache POST error. (The display shows a solid 20c for
         5 seconds.)
     210 Unexpected SVC interrupt.
     211 IPL ROM CRC comparison error (irrecoverable).
     212 RAM POST memory configuration error or no memory found
         (irrecoverable).
     213 RAM POST failure (irrecoverable).
     214 Power status register failed (irrecoverable).
     215 A low voltage condition is present (irrecoverable).
     216 IPL ROM code being uncompressed into memory.
     217 End of boot list encountered.
     218 RAM POST is looking for good memory.
     219 RAM POST bit map is being generated.
     21c L2 cache is not detected. (The display shows a solid 21c
         for 2 seconds.)
     220 IPL control block is being initialized.
     221 NVRAM CRC comparison error during AIX IPL(key mode switch
         in Normal mode).
         Reset NVRAM by reaccomplishing IPL in Service mode. For
         systems with an internal, direct-bus-attached (DBA) disk,
         IPL ROM attempted to perform an IPL from that disk before
         halting with this operator panel display value.
     222 Attempting a Normal mode IPL from Standard I/O planar-
         attached devices specified in NVRAM IPL Devices List.
     223 Attempting a Normal mode IPL from SCSI-attached devices
         specified in NVRAM IPL Devices List.
     224 Attempting a Normal mode IPL from 9333 subsystem device
         specified in NVRAM IPL Devices List.
     225 Attempting a Normal mode IPL from 7012 DBA disk-attached
         devices specified in NVRAM IPL Devices List.
     226 Attempting a Normal mode IPL from Ethernet specified in NVRAM
         IPL Devices List.
     227 Attempting a Normal mode IPL from Token-Ring specified in NVRAM
         IPL Devices List.
     228 Attempting a Normal mode IPL from NVRAM expansion code.
     229 Attempting a Normal mode IPL from NVRAM IPL Devices List;
         cannot IPL from any of the listed devices, or there are no
         valid entries in the Devices List.
     22c Attempting a normal mode IPL from FDDI specified in NVRAM IPL
         device list.
     230 Attempting a Normal mode IPL from adapter feature ROM specified
         in IPL ROM Device List.
     231 Attempting a Normal mode IPL from Ethernet specified in IPL ROM
         Device List.
     232 Attempting a Normal mode IPL from Standard I/O planar-attached
         devices specified in ROM Default Device List.
     233 Attempting a Normal mode IPL from SCSI-attached devices
         specified in IPL ROM Default Device List.
     234 Attempting a Normal mode IPL from 9333 subsystem device
         specified in IPL ROM Device List.
     235 Attempting a Normal mode IPL from 7012 DBA disk-attached
         devices specified in IPL ROM Default Device List.
     236 Attempting a Normal mode IPL from Ethernet specified in IPL ROM
         Default Device List.
     237 Attempting a Normal mode IPL from Token-Ring specified in IPL
         ROM Default Device List.
     238 Attempting a Normal mode IPL from Token-Ring specified by the
         operator.
     239 System failed to IPL from the device chosen by the operator.
     23c Attempting a normal mode IPL from FDDI specified in IPL ROM
         device list.
     240 Attempting a Service mode IPL from adapter feature ROM.
     241 Attempting a normal boot from devices specified in the NVRAM
         boot list.
     242 Attempting a Service mode IPL from Standard I/O planar-attached
         devices specified in the NVRAM IPL Devices List.
     243 Attempting a Service mode IPL from SCSI-attached devices
         specified in the NVRAM IPL Devices List.
     244 Attempting a Service mode IPL from 9333 subsystem device
         specified in the NVRAM IPL Devices List.
     245 Attempting a Service mode IPL from 7012 DBA disk-attached
         devices specified in the NVRAM IPL Devices List.
     246 Attempting a Service mode IPL from Ethernet specified in the
         NVRAM IPL Devices List.
     247 Attempting a Service mode IPL from Token-Ring specified in the
         NVRAM Device List.
     248 Attempting a Service mode IPL from NVRAM expansion code.
     249 Attempting a Service mode IPL from the NVRAM IPL Devices List;
         cannot IPL from any of the listed devices, or there are no valid
         entries in the Devices List.
     24c Attempting a service mode IPL from FDDI specified in NVRAM IPL
         device list.
     250 Attempting a Service mode IPL from adapter feature ROM
         specified in the IPL ROM Device List.
     251 Attempting a Service mode IPL from Ethernet specified in the
         IPL ROM Default Device List.
     252 Attempting a Service mode IPL from Standard I/O planar-attached
         devices specified in the ROM Default Device List.
     253 Attempting a Service mode IPL from SCSI-attached devices
         specified in the IPL ROM Default Device List.
     254 Attempting a Service mode IPL from 9333 subsystem device
         specified in the IPL ROM Devices List.
     255 Attempting a Service mode IPL from 7012 DBA disk-attached
         devices specified in IPL ROM Default Device List.
     256 Attempting a Service mode IPL from Ethernet specified in the
         IPL ROM Devices List.
     257 Attempting a Service mode IPL from Token-Ring specified in the
         IPL ROM Devices List.
     258 Attempting a Service mode IPL from Token-Ring specified by the
         operator.
     259 Attempting a Service mode IPL from FDDI specified by the
         operator.
     25c Attempting a service mode IPL from FDDI specified in IPL ROM
         device list.
     260 Information is being displayed on the display console.
     261 No supported local system display adapter was found.
     262 Keyboard not detected as being connected to the system's
         keyboard port.
     263 Attempting a Normal mode IPL from adapter feature ROM specified
         in the NVRAM Device List.
     269 Stalled state - the system is unable to IPL.
     270 Low Cost Ethernet Adapter (LCE) POST executing
     271 Mouse and Mouse port POST.
     272 Tablet Port POST.
     276 10/100Mbps MCA Ethernet Adapter POST executing
     277 Auto Token-Ring LANstreamer MC 32 Adapter.
     278 Video ROM scan POST.
     279 FDDI POST.
     280 3com Ethernet POST.
     281 Keyboard POST executing.
     282 Parallel port POST executing.
     283 Serial port POST executing.
     284 POWER Gt1 graphics adapter POST executing.
     285 POWER Gt3 graphics adapter POST executing.
     286 Token-Ring adapter POST executing.
     287 Ethernet adapter POST executing.
     288 Adapter card slots being queried.
     289 POWER GT0 Display Adapter POST.
     290 IOCC POST error (irrecoverable).
     291 Standard I/O POST running.
     292 SCSI POST running.
     293 7012 DBA disk POST running.
     294 IOCC bad TCW memory module in slot location J being tested.
     295 Graphics Display adapter POST, color or grayscale.
     296 ROM scan POST.
     297 System model number does not compare between OCS and ROS
         (irrecoverable).
     298 Attempting a software IPL.
     299 IPL ROM passed control to the loaded program code.
     301 Flash Utility ROM test failed or checkstop occurred
         (irrecoverable).
     302 Flash Utility ROM: User prompt, move the key to the service
         position in order to perform an optional Flash Update. LED 302
         will only appear if the key switch is in the secure position.
         This signals the user that a Flash Update may be initiated by
         moving the key switch to the service position. If the key is
         moved to the service position then LED 303 will be displayed,
         this signals the user to press the Reset button and select
         optional Flash Update.
     303 Flash Utility ROM: User prompt, press the Reset button in order
         to perform an optional Flash Update. LED 302 will only appear if
         the key switch is the secure position. This signals the user that
         a Flash Update may be initiated by moving the key switch to the
         service position. If the key is moved to the service position
         LED 303 will be displayed, this signals the user to press the
         Reset button and select optional Flash Update.
     304 Flash Utility ROM IOCC POST error (irrecoverable).
     305 Flash Utility ROM standard I/O POST running.
     306 Flash Utility ROM is attempting IPL from Flash Update media
         device.
     307 Flash Utility ROM system model number does not compare between
         OCS and ROM (irrecoverable).
     308 Flash Utility ROM: IOCC TCW memory is being tested.
     309 Flash Utility ROM passed control to a Flash Update Boot Image.
     311 Flash Utility ROM CRC comparison error (irrecoverable).
     312 Flash Utility ROM RAM POST memory configuration error or no
         memory found (irrecoverable).
     313 Flash Utility ROM RAM POST failure (irrecoverable).
     314 Flash Utility ROM Power status register failed (irrecoverable).
     315 Flash Utility ROM detected a low voltage condition.
     318 Flash Utility ROM RAM POST is looking for good memory.
     319 Flash Utility ROM RAM POST bit map is being generated.
     322 CRC error on media Flash Image. No Flash Update performed.
     323 Current Flash Image is being erased.
     324 CRC error on new Flash Image after Update was performed. (Flash
         Image is corrupted.)
     325 Flash Update successful and complete.


     
     Configuration Program Indicators
     --------------------------------
     500 Querying Standard I/O slot.
     501 Querying card in Slot 1.
     502 Querying card in Slot 2.
     503 Querying card in Slot 3.
     504 Querying card in Slot 4.
     505 Querying card in Slot 5.
     506 Querying card in Slot 6.
     507 Querying card in Slot 7.
     508 Querying card in Slot 8.
     510 Starting device configuration.
     511 Device configuration completed.
     512 Restoring device configuration files from media.
     513 Restoring basic operating system installation files from media.
     516 Contacting server during network boot.
     517 Mounting client remote file system during network IPL.
     518 Remote mount of the root and /usr file systems failed during
         network boot.
     520 Bus configuration running.
     521 /etc/init invoked cfgmgr with invalid options; /etc/init has
         been corrupted or incorrectly modified (irrecoverable error).
     522 The configuration manager has been invoked with conflicting
         options (irrecoverable error).
     523 The configuration manager is unable to access the ODM database
         (irrecoverable error).
     524 The configuration manager is unable to access the config.rules
         object in the ODM database (irrecoverable error).
     525 The configuration manager is unable to get data from a
         customized device object in the ODM database (irrecoverable
         error).
     526 The configuration manager is unable to get data from a
         customized device driver object in the ODM database
         (irrecoverable error).
     527 The configuration manager was invoked with the phase 1 flag;
         running phase 1 at this point is not permitted (irrecoverable
         error).
     528 The configuration manager cannot find sequence rule, or no
         program name was specified in the ODM database (irrecoverable
         error).
     529 The configuration manager is unable to update ODM data
         (irrecoverable error).
     530 The program savebase returned an error.
     531 The configuration manager is unable to access the PdAt object
         class (irrecoverable error).
     532 There is not enough memory to continue (malloc failure);
         irrecoverable error.
     533 The configuration manager could not find a configure method for
         a device.
     534 The configuration manager is unable to acquire database lock
         (irrecoverable error).
     535 HIPPI diagnostics interface driver being configured.
     536 The configuration manager encountered more than one sequence
         rule specified in the same phase (irrecoverable error).
     537 The configuration manager encountered an error when invoking
         the program in the sequence rule.
     538 The configuration manager is going to invoke a configuration
         method.
     539 The configuration method has terminated, and control has
         returned to the configuration manager.
     551 IPL varyon is running.
     552 IPL varyon failed.
     553 IPL phase 1 is complete.
     554 The boot device could not be opened or read, or unable to
         define NFS swap device during network boot.
     555 An ODM error occurred when trying to varyon er being identified or configured.
     870 Serial disk drive adapter being identified or configured.
     871 Graphics subsystem adapter being identified or configured.
     872 Grayscale graphics adapter being identified or configured.
     874 Color graphics adapter being identified or configured.
     875 Vendor generic communication adapter being configured.
     876 8-bit color graphics processor being identified or configured.
     877 POWER Gt3/POWER Gt4 being identified or configured.
     878 POWER Gt4 graphics processor card being configured.
     879 24-bit color graphics card, MEV2
     880 POWER Gt1 adapter being identified or configured.
     887 Integrated Ethernet adapter being identified or configured.
     889 SCSI adapter being identified or configured.
     890 SCSI-2 Differential Fast/Wide and Single-Ended Fast/Wide
         Adapter/A.
     891 Vendor SCSI adapter being identified or configured.
     892 Vendor display adapter being identified or configured.
     893 Vendor LAN adapter being identified or configured.
     894 Vendor async/communications adapter being identified or
         configured.
     895 Vendor IEEE 488 adapter being identified or configured.
     896 Vendor VME bus adapter being identified or configured.
     897 S/370 Channel Emulator adapter being identified or configured.
     898 POWER Gt1x graphics adapter being identified or configured.
     899 3490 attached tape drive being identified or configured.
     89c Progress indicator. A multimedia SCSI CD-ROM is being
         identified or configured.
     901 Vendor SCSI device being identified or configured.
     902 Vendor display device being identified or configured.
     903 Vendor async device being identified or configured.
     904 Vendor parallel device being identified or configured.
     905 Vendor other device being identified or configured.
     908 POWER GXT1000 Graphics subsystem being identified or
         configured.
     910 1/4GB Fibre Channel/266 Standard Adapter being identified or
         configured.
     911 Fibre Channel/1063 Adapter Short Wave
     912 2.0GB SCSI-2 differential disk drive being identified or
         configured.
     913 1.0GB differential disk drive being identified or configured.
     914 5GB 8 mm differential tape drive being identified or
         configured.
     915 4GB 4 mm tape drive being identified or configured.
     916 Non-SCSI vendor tape adapter being identified or configured.
     917 Progress indicator. 2.0GB 16-bit differential SCSI disk drive
         is being identified or configured.
     918 Progress indicator. 2GB 16-bit single-ended SCSI disk drive is
         being identified or configured.
     920 Bridge Box being identified or configured.
     921 101 keyboard being identified or configured.
     922 102 keyboard being identified or configured.
     923 Kanji keyboard being identified or configured.
     924 Two-button mouse being identified or configured.
     925 Three-button mouse being identified or configured.
     926 5083 tablet being identified or configured.
     927 5083 tablet being identified or configured.
     928 Standard speaker being identified or configured.
     929 Dials being identified or configured.
     930 Lighted program function keys (LPFK) being identified or
         configured.
     931 IP router being identified or configured.
     933 Async planar being identified or configured.
     934 Async expansion drawer being identified or configured.
     935 3.5-inch diskette drive being identified or configured.
     936 5.25-inch diskette drive being identified or configured.
     937 An HIPPI adapter is being configured.
     942 POWER GXT 100 graphics adapter being identified or configured.
     943 Progress indicator. 3480 and 3490 control units attached to a
         System/370 Channel Emulator/A adapter are being identified or
         configured.
     944 100MB ATM adapter being identified or configured
     945 1.0GB SCSI differential disk drive being identified or
         configured.
     946 Serial port 3 adapter is being identified or configured.
     947 Progress indicator. A 730MB SCSI disk drive is being
         configured.
     948 Portable disk drive being identified or configured.
     949 Unknown direct bus-attached device being identified or
         configured.
     950 Missing SCSI device being identified or configured.
     951 670MB SCSI disk drive being identified or configured.
     952 355MB SCSI disk drive being identified or configured.
     953 320MB SCSI disk drive being identified or configured.
     954 400MB SCSI disk drive being identified or configured.
     955 857MB SCSI disk drive being identified or configured.
     956 670MB SCSI disk drive electronics card being identified or
         configured.
     957 120MB DBA disk drive being identified or configured.
     958 160 MB DBA disk drive being identified or configured.
     959 160MB SCSI disk drive being identified or configured.
     960 1.37GB SCSI disk drive being identified or configured.
     964 Internal 20GB 8mm tape drive identified or configured.
     968 1.0GB SCSI disk drive being identified or configured.
     970 Half-inch, 9-track tape drive being identified or configured.
     971 150MB 1/4-inch tape drive being identified or configured.
     972 2.3GB 8 mm SCSI tape drive being identified or configured.
     973 Other SCSI tape drive being identified or configured.
     974 CD-ROM drive being identified or configured.
     975 Progress indicator. An optical disk drive is being identified
         or configured.
     977 M-Audio Capture and Playback Adapter being identified or
         configured.
     981 540MB SCSI-2 single-ended disk drive being identified or
         configured.
     984 1GB 8-bit disk drive being identified or configured.
     985 M-Video Capture Adapter being identified or configured.
     986 2.4GB SCSI disk drive being identified or configured.
     987 Progress indicator. Enhanced SCSI CD-ROM drive is being
         identified or configured.
     989 200MB SCSI disk drive being identified or configured.
     990 2.0GB SCSI-2 single-ended disk drive being identified or
         configured.
     991 525MB 1/4-inch cartridge tape drive being identified or
         configured.
     994 5GB 8 mm tape drive being identified or configured.
     995 1.2GB 1/4 inch cartridge tape drive being identified or
         configured.
     996 Progress indicator. Single-port, multi-protocol communications
         adapter is being identified or configured.
     997 FDDI adapter being identified or configured.
     998 2.0GB4 mm tape drive being identified or configured.
     999 7137 or 3514 Disk Array Subsystem being configured.
     D81 T2 Ethernet Adapter being configured.



     Diagnostic Load Progress Indicators
     -----------------------------------
     Note: When a lowercase c is listed, it displays in the lower half
     of the seven-segment character position.
     
     c00 AIX Install/Maintenance loaded successfully.
     c01 Insert the first diagnostic diskette.
     c02 Diskettes inserted out of sequence.
     c03 The wrong diskette is in diskette drive.
     c04 The loading stopped with a nonrecoverable error.
     c05 A diskette error occurred.
     c06 The rc.boot configuration shell script is unable to determine
         type of boot.
     c07 Insert the next diagnostic diskette.
     c08 RAM file system started incorrectly.
     c09 The diskette drive is reading or writing a diskette.
     c20 An unexpected halt occurred, and the system is configured to
         enter the kernel debug program instead of entering a system dump.
     c21 The ifconfig command was unable to configure the network for
         the client network host.
     c22 The tftp command was unable to read client's ClientHostName
         info file during a client network boot.
     c24 Unable to read client's ClientHostName.info file during a
         client network boot.
     c25 Client did not mount remote miniroot during network install.
     c26 Client did not mount the /usr file system during the network
         boot.
     c29 The system was unable to configure the network device.
     c31 Select the console display for the diagnostics. To select No
         console display, set the key mode switch to Normal then to
         Service. The diagnostic programs will then load and run the
         diagnostics automatically.
     c32 A direct-attached display (HFT) was selected.
     c33 A tty terminal attached to serial ports S1 or S2 was selected.
     c34 A file was selected. The console messages store in a file.
     c40 Configuration files are being restored.
     c41 Could not determine the boot type or device.
     c42 Extracting data files from diskette.
     c43 Cannot access the boot/install tape.
     c44 Initializing installation database with target disk
         information.
     c45 Cannot configure the console.
     c46 Normal installation processing.
     c47 Could not create a physical volume identifier (PVID) on disk.
     c48 Prompting you for input.
     c49 Could not create or form the JFS log.
     c50 Creating root volume group on target disks.
     c51 No paging devices were found.
     c52 Changing from RAM environment to disk environment.
     c53 Not enough space in the /tmp directory to do a preservation
         installation.
     c54 Installing either BOS or additional packages.
     c55 Could not remove the specified logical volume in a preservation
         installation.
     c56 Running user-defined customization.
     c57 Failure to restore BOS.
     c58 Displaying message to turn the key.
     c59 Could not copy either device special files, device ODM, or
         volume group information from RAM to disk.
     c61 Failed to create the boot image.
     c62 Loading platform dependent debug files
     c63 Loading platform dependent data files
     c64 Failed to load platform dependent data files
     c70 Problem Mounting diagnostic CDROM disc
     c99 Diagnostics have completed. This code is only used when there
         is no console.



     Firmware Checkpoint Three-Digit Codes (mainly RS/6000 E-Series)
     -----------------------------------
     F00 Manufacturing - Reserved for Parallel port download protocol
     F01 Clear the EPOW register
     F02 Determine system bus speed, set ISA divisor
     F04 Set memory refresh
     F06 Jump to set environment or check flash
     F08 Run recovery block base memory, test 2k, then set stack
     F09 Copy CRC verification code to RAM
     F0A Turn on cache
     F0B Flush cache
     F0C Jump to CRC verification code in RAM
     F0D Compute composite image CRC
     F0E Jump back to ROM
     F0F Turn off cache
     F10 Check if composite image CRC is valid
     F11 GOOD CRC - jump to composite image
     F12 BAD CRC - initialize base memory, stack
     F13 BAD CRC - copy uncompressed recovery block code to RAM
     F14 BAD CRC - jump to code in RAM
     F15 BAD CRC - turn on cache
     F16 BAD CRC - copy recovery block data section to RAM
     F17 BAD CRC - Invalidate and flush cache, set TOC
     F18 BAD CRC - branch to high level recovery control routine
     F19 Initialize base memory, stack
     F1A Copy uncompressed recovery block code to RAM
     F1B Jump to code in RAM
     F1C Turn on cache
     F1D Copy recovery block data section to RAM
     F1E Invalidate and flush cache, set TOC
     F1F Branch to high level control routine
     F20 Initialize System I/O
     F21 Run a console diagnostic routine
     F22 No memory found
     F23 No DIMM found in the socket
     F24 Remove bad DIMM found from DIMM information
     F25 Unsupported DIMM detected
     F26 Check valid image - start
     F27 Check valid image - successful
     F28 Wait for interrupt
     F29 Transfers information to the business audio chip
     F2B Wait till sound chip has been initialized
     F2C Initialize the current input/pointer device
     F2D Initialize the current output
     F2E Register a console driver
     F30 Set up early memory allocation heap, Initialize Super I/O
     F31 Determine system bus speed, set ISA divisor
     F32 Resync to SP (Composite Image)
     F33 Set memory refresh
     F35 Jump to set environment
     F40 Initialize interrupt subsystem and 8259s
     F41 SP command setup
     F42 SP Mailbox interface
     F43 get_vpd entry
     F44 init_sp entry
     F45 sp_recovery -> resync SP & CPU
     F46 IRQ13 stuck high
     F47 Entry to error checking routine
     F48 Power Supply or System Board problem
     F49 Voltage problem. System Board, Power Supply or CPU
     F4A Voltage problem. System Board or Power Supply
     F4B CPU over temperature or bad System Board
     F4C Start bit-map display function
     F4D Bit-map file read into memory, start processing
     F4E End bit-map display function
     F4F IO/MEM over temperature or bad System Board
     F50 Initialize CMOS RTC periodic interrupt
     F51 System Board or System over temperature
     F52 Bad System Board (Fan Fail reported)
     F53 Bad System Board
     F54 Fan fail warning
     F55 Bad System Board (Unsupported EPOW)
     F56 Voltage problem. System Board, Power Supply or CPU
     F57 Bad or low battery
     F58 IRQ13 test failure
     F59 EPOW test failure
     F5A Spurious IRQ 7 interrupt (ie: interrupt glitch)
     F5B Fan failure warning
     F5C Clear EPOW register failure
     F5D Clear EPOW register failure
     F60 Initialize keyboard/mouse controller, and password
     F61 Extended memory initialization command
     F62 Diskette initialization command
     F64 Test of day routine
     F6A SCSI Initialization command
     F70 Initialize debugger
     F71 Start Checking whether CMOS contents are valid
     F72 End Checking whether CMOS contents are valid
     F73 Dumps contents of CMOS data area to a file
     F74 CMOS Initialization
     F75 Loads contents of CMOS from file
     F77 Resync to SP (Recovery Image)
     F79 Dumps contents of NVRAM data area to a file
     F7A NVRAM Initialization
     F7B Check NVRAM validity CRC
     F7C Loads contents of CMOS from file
     F80 Initialize system call table
     F82 Register a manager for use by the system
     F88 Halt. System locked by error condition -- power off.
     F90 Initialize VDISK file system
     F91 Low-level initialize VDISK file systems
     F94 Start SCSI initialization
     F96 SCSI bus scan start
     F97 SCSI polling interrupt
     F98 SCSI device detected
     F9F Exit SCSI initialization
     FA0 Start resident monitor, run V:autoexec.6md - initializes
	 various subsystems - video, keyboard/mouse, extended memory,
	 diskette, SCSI, etc.
     FA1 Enter resident monitor
     FA2 Resident monitor process
     FA3 Resident monitor process
     FA4 Exit resident monitor
     FA5 ASCII terminal initialization
     FA6 ASCII terminal initialization exit
     FA9 p9 driver initialization
     FAA p9 driver exit
     FAB Keyboard driver initialization
     FAC Keyboard driver exit
     FAD Mouse driver initialization
     FAE Mouse driver exit
     FB0 Initialize rest of file system
     FB1 Diskette initialization
     FB2 Diskette drive type determination
     FB3 Diskette initialization complete
     FC0 Check if flash ROM OK
     FCA Build boot table - Networks
     FCB Build boot table - DASD
     FCC Build boot table - CD ROM
     FCD Build boot table - diskettes
     FCE No Operating System boot, exit normal boot sequence
     FD0 Start of boot sequence
     FD2 No Operating System boot - ensure CMOS RTC periodic clock
	 updates displayed
     FD4 Initialize console for loading diagnostics
     FD8 Exit from diagnostic - run resident monitor
     FDA IRQ 15
     FDB Unexpected processor exception
     FDC Unexpected external interrupt exception
     FDD Early processor exception
     FDE Shutdown entire file system
     FE1 Test Timeout
     FE2 Initialize System I/O
     FE4 Initialize Super I/O with default values
     FE6 Set up early memory allocation heap
     FE8 Initialize primary diskette drive in polled mode
     FEA Try to load in recovery image from diskette
     FEB Verify recovery image is valid
     FEC Get recovery image entry point
     FED Invalidate instruction cache
     FEE Jump to composite image
     FF0 Manufacturing - Check for Parallel Port hook
     FF4 Manufacturing - Start flag not received
     FF5 Manufacturing - Invalid Start flag received
     FF6 Manufacturing - Receive character timeout
     FF7 Manufacturing - CRC value mismatch
     FFA Error during flash update
     FFC Operating System boot - No errors reported by IPL ROS
     FFD Operating System boot - Non-critical errors reported by IPL ROS
     FFE No boot - Critical error(s) reported by IPL ROS or F1 key pressed

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