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Troubleshooting Symptom Charts/System - 7
System shuts down
intermittently
1 Make sure air vents are clear. Thermal protection
circuitry may shut down system. After 30 to 40 minutes,
system should be OK.
2 Make sure power cord is firmly plugged in.
3 Verify fan is plugged in and working (if present). Replace if
necessary. (Note: Some 90 MHz versions of the Power
Macintosh 7200 logic board have a fan that plugs into the
logic board near the processor.)
4 Replace power cord.
5 Check battery.
6 Reset Cuda chip. (Refer to The Cuda Chip in Basics for
instructions.)
7 Reset logic board. (Refer to Resetting the Logic Board in
Basics for instructions.)
8 Replace power supply.
9 Replace logic board. Retain customer's DIMMs.