Apple powermac 8500 series Servicehandbuch

 

 Troubleshooting

Symptom Charts/System 

 

 (Continued)

 

 - 8

 

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 Replace power cord.

4 Check battery. 

5 Reset Cuda chip. (Refer to The Cuda Chip in Basics for 

instructions.)

6 Reset logic board. (Refer to Resetting the Logic Board in 

Basics for instructions.)

7 Replace power supply.

8 Replace processor card.

9 Replace logic board. Retain customer's DIMMs.