Compaq Presario 18XL Maintenance & Service Guide Presario 1800/1800T Serie - Page 50

Presario 1800/1800T Series Models: XL280, XL380, XL381, and XL390 Error Code 501-xx 502-xx 503-xx 504-xx 505-xx 506-xx 507-xx 508-xx 509-xx 510-xx 511-xx 512-xx 514-xx 516-xx Video Test Error Codes Description Video controller test failed Video memory test failed Video attribute test failed Video character set test failed Video 80 x 25 mode 9 x 14 character cell test failed Recommended Action The following steps apply to error codes 501-xx through 516-xx: 1. Disconnect external monitor and test with the Notebook display. 2. Replace the display assembly and retest. 3. Replace the system board and retest. Video 80 x 25 mode 8 x 8 character cell test failed Video 40 x 25 mode test failed Video 320 x 200 mode color set 0 test failed Video 320 x 200 mode color set 1 test failed Video 640 x 200 mode test failed Video screen memory page test failed Video gray scale test failed Video white screen test failed Video noise pattern test failed 14 TROUBLESHOOTING PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES