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Error Code   Description            Recommended Action
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2419 - xx    ECG/VGC ROM checksum   The following steps apply to error
             test failed            codes 2402 - xx through 2456 - xx:
2421 - xx    ECG/VGC 640 x 200      1. Run the Diagnostics Utilities.
             graphics mode test     2. Disconnect external monitor and
             failed                    retest with internal LCD monitor.
                                    3. Replace the display assembly and
2422 - xx    ECG/VGC 640 x 350         retest.                     
             16 color set test      4. Replace the system board and retest.
             failed                 
 
2423 - xx    ECG/VGC 640 x 350      
             64 color set test
             failed
2431 - xx    640 x 480 graphics
             test failure
2432 - xx    320 x 200 graphics
             (256 color mode)
             test failure
2448 - xx    Advanced VGA
             Controller test
             failed
2451 - xx    132-column Advanced
             VGA test failed
2456 - xx    Advanced VGA 256
             Color test failed
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2458 - xx    Advanced VGA BitBLT    Replace the system board and retest.
             test
2468 - xx    Advanced VGA DAC
             test
2477 - xx    Advanced VGA data
             path test
2478 - xx    Advanced VGA BitBLT
             test
2480 - xx    Advanced VGA
             Linedraw test
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