Apple powermac 8500 series Servicehandbuch
Troubleshooting
Symptom Charts/Video
(Continued)
- 14
Video
(Continued)
Boot tone is present
and screen lights up,
but nothing is
displayed on screen
1 Reset Cuda chip. (Refer to The Cuda Chip in Basics for
instructions.)
2 Reset logic board. (Refer to Resetting the Logic Board in
Basics for instructions.)
3 Replace monitor cable.
4 Test with known-good monitor. Replace monitor if
necessary. Refer to appropriate monitor manual to
troubleshoot defective monitor.
5 Replace processor card.
6 Replace logic board. Retain customer's DIMMs.