Apple powermac 8500 series Servicehandbuch
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Troubleshooting
Symptom Charts/System - 6
System
Does not power on,
screen is black, fan is
not running and LED
is not lit
1 Check power cables.
2 Plug monitor directly into wall socket, and verify that
monitor has power.
3 Reseat ROM SIMM (if present) and processor card. The logic
board must have a processor card installed to operate.
4 Reset Cuda chip. (Refer to The Cuda Chip in Basics for
instructions.)
5 Reset logic board. (Refer to Resetting the Logic Board in
Basics for instructions.)
6 Replace power cord.
7 Replace power supply.
8 Replace processor card.
9 Replace logic board. Retain customer's DIMMs.