IBM ROM Diagnostic and Power-On-Self-Test Errors 100-599 (78976)

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Code Description
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1XX  Generally associated with the system board.

        101  Main system board interrupt failure
        102  System timer failed
        103  System timer interrupt failed
        104  System - Protected mode error
        105  System error- last 8042 command not accepted
        106  System Converting logic test
        107  System hot NMI test
        108  System Timer Bus Test
        109  Direct memory access test error
        110  PS/2 System board error; Parity check error
        111  PS/2 Memory adapter error
        112  PS/2 MicroChannel arbitration error
        113  PS/2 MicroChannel arbitration error
        121  Unexpected hardware interrupts occurred
        131  Cassette wrap test failed
        161  Systems options (CMOS) run setup Battery bad
        162  Systems options not set run setup
        163  Time and Date not set run setup
        164  Memory Size error run setup
        165  PS/2 Systems options not set*
        166  PS/2 MicroChannel adapter time-out error*
        199  User indicated configuration not correct
             * Nearly all PS/2 systems require supplemental
                drivers on diskette, these drivers are included on
                the original Reference diskette.  For MicroChannel
                devices there is usually a diskette that comes
                with the device that will install the device or
                the appropriate driver.

2XX     Memory test errors *

        201  Memory test failed
        202  Memory address error
        203  Memory address error

             * Many times the 2XX error will be displayed with
             numerical suffixes indicating the actual location
             where the error has occurred generally telling you
             if it is a system board error or an add-on memory card
             error.

3XX     Keyboard errors *

        301  Keyboard did not respond to software reset
             correctly or a stuck key was detected. If a stuck
             key was detected, the scan code for the key may
             be displayed in hexidecimal, (this is not always
             the case with a stuck key; however, if the scan
             code is returned it is always in hexadecimal). For
             example, the error code "49 301" indicates that
             key 73, the PAGE UP key has failed (49 hex =
             73 decimal).
        302  User indicated error from the keyboard test or AT
             class machine keylock is active, unlock the
             keyboard.
        303  Keyboard or system error.
        304  Keyboard or system error; CMOS does not match
             system.
        305  PS/2 Keyboard fuse (on system board) error.

                *On some occasions none of the above
             keyboard errors occurs but the keyboard will tell
             you that there is a problem using its LED
             display. Normally the LEDs will flash ONCE after
             the power is applied to the system unit; errors
             will be indicated by any deviance to this norm,
             that is, the LEDs will flash on and off
             continuously, they will not flash at all,
             or they will cycle one to the other.

4XX  Monochrome Monitor errors

        401  Monochrome monitor test, horizontal sync.,
             frequency test, or video test has failed.
                (Also PS/2 system board parallel port error)
        408  User indicated display attributes.
        416  User indicated character set failure.
        424  User indicated 80x25 mode failure.
        432  Parallel port test failed (monochrome adapter,
             generally at 03BC hex; however, ATI has CGA, EGA
             video cards with "Piggy-back" parallel and serial
             ports that are user selectable).

5XX     Color monitor errors.

        501  Color memory test failed, horizontal sync.,
             frequency test, or video test failed.
        508  User indicated display attribute failure.
        516  User indicated character set failure.
        524  User indicated 80x25 mode failure.
        532  User indicated 40x25 mode failure.
        540  User indicated 320x200 mode failure.
        548  User indicated 640x200 mode failure.

        24xx Enhanced Graphics Adapter (EGA) errors
        24xx PS/2 System board Video Graphics Array (VGA)
                errors

        39xx Professional graphics controller errors

        74xx IBM PS/2 Display adapter (VGA Card) errors