Apple powermac g3 blue.white サービスマニュアル

 

 Troubleshooting

Symptom Charts/System - 37

 

system software with the CD that came with the unit.

3 Verify software is Power Macintosh compatible (contact 

developer). Also, try booting with extensions off to determine 

if there are system init problems.

4 Run Disk First Aid.

5 Test for bad memory. Run MacTest Pro in loop mode 

overnight to test the memory. If MacTest Pro finds a bad 

memory module, or other hardware, replace the hardware in 

question with a known-good module.

6 Clear parameter RAM. Hold down Command-Option-P-R 

during startup but before “Welcome to Macintosh” appears.

7 Remove all SDRAM DIMMs and try replacing them one at a 

time to test. Replace any bad DIMMs.

8 Reset the logic board. Refer to “Resetting the Logic Board” 

mentioned earlier in this chapter.

9 Replace logic board. 

10 Replace processor module.