Apple powermac g3 blue.white Service Manual

 

 Troubleshooting

General/Logic Board LEDs - 8

 

There are seven LEDs on the Power Macintosh G3/Macintosh 

Server G3 (Blue and White) computer. A graphic follows that 

identifies their logic board location.

 

If a CD and/or Zip are attached to the ATA bus, this LED will 

illuminate at power/on restart time for a few seconds. After that, 

it is unlikely it will illuminate again in a trouble-free system. If 

this light stays on for a prolonged period, this is a sign of trouble 

on the ATA bus. If devices are connected to the ATA bus and this LED 

is dark at boot time, that is also likely a sign of trouble. If a hard 

disk drive were attached to this bus, the LED would flicker 

regularly indicating drive activity (reads/writes). 

 

  There is no DS2 or DS3 on the board