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Troubleshooting Symptom Charts/Video - 12
Screen is black, no
boot tone and drive
does not operate, but
fan is running and
LED is lit
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 Remove all DRAM DIMMs and try replacing them one at a
time to test. Replace any bad DIMMs.
4 Replace processor card.
5 Replace logic board. Retain customer's DIMMs. Note: When
you replace the logic board, be sure the LED cable is not
interfering with the power actuator.
6 Replace power supply.