Specifications

iMac G5 (17-inch iSight) Troubleshooting — General Info 124
Press the power button at the rear of the unit.
Observe the LEDs, which will come on indicating the computer status as indicated below:
LED 1 Operation: Should turn on as soon as the power cord is plugged into the system,
indicating that line voltage is present and basic power supply functionality is OK.
LED 2 Operation: Should turn on as soon as the power button is pressed, indicating the
remainder of the power supply system is functioning.
LED 3 Operation: Should turn on as soon as the system conrms that communication is
established with the LCD display. The display and backlights should be on.
LED 4 Operation: Turns on in the event that the processor overheats.
To shut o the computer with the front bezel removed, press the power button at the rear of
the unit for at least ve seconds. The green LEDs will go out.
4.
5.
6.