Compaq 1600XL Maintenance & Service Manual page 66

Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,
1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258
Error Code Description
2419-xx ECG/VGC ROM checksum test
failed
2421-xx ECG/VGC 640 x 200 graphics
mode test failed
2422-xx ECG/VGC 640 x 350 16 color set
test failed
2423-xx ECG/VGC 640 x 350 64 color set
test failed
2424-xx ECG/VGC monochrome text
mode test failed
2425-xx ECG/VGC monochrome graphics
mode 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
Error Code Description
2458-xx Advanced VGA BitBLT test failed
2468-xx Advanced VGA DAC test failed
2477-xx Advanced VGA data path test
failed
2478-xx Advanced VGA BitBLT test failed
2480-xx Advanced VGA LineDraw test
failed
18 T
ROUBLESHOOTING
Presario 1600XL Series
Video Test Error Codes (Continued)
Video Test Error Codes (Continued)
P
RESARIO
Recommended Action
1. Run the Configuration and Diagnostics
Utilities.
2. Disconnect external monitor and test
with internal LCD display.
3. Replace the display assembly and
retest.
4. Replace the system board and retest.
Recommended Action
The following applies to error codes
2458-xx through 2480-xx:
Replace the system board and retest.
N M S
OTEBOOK AINTENANCE AND
G 1600XL S
ERVICE UIDE ERIES