Apple powermac g3 blue.white Service Manual

 

 Troubleshooting

General/Logic Board Troubleshooting - 4

 

There is a power-on self test that resides in the ROM of the Power 

Macintosh G3/Macintosh Server G3 (Blue and White). This test 

automatically runs whenever the Power Macintosh G3 is powered 

on after being fully shut down (the power-on self test does not run 

if the machine is only restarted). If a problem is detected during 

the test, you will not hear a normal startup chime. Instead, the 

system will beep as explained below.
•

 

 No RAM is installed or detected.

•

 

Incompatible RAM types are installed (for example, 

both SDRAM and EDO installed).
•

 

No RAM banks passed memory testing. 

•

 

Bad checksum for the remainder of the boot ROM 

block. The ROM is bad and probably cannot be fixed.