Specifications

14 - PowerBook G4 (17-inch DLSD/1.67/1.5/1.33GHz) Troubleshooting
General Information
bootable disc. The computer may be hanging before the video goes on. This situation may
occur if the software is corrupted or the hard drive is not responding.
If the issue persists when started up to a valid bootable disc, there may be a hardware
issue. If the sleep light never turns on at startup and there is no audible boot chime or
drive noise, proceed with troubleshooting the hardware.
Caps lock LED power check
There are situations when the system is giving indications that it is shut down (no sleep
light, no hard drive access, screen is dark, no blower, and so on). However, the logic board
may still be running. In this case, the logic board is drawing power and generating heat.
Warning: In this situation, if the computer is put in an enclosed environment like a
carrying bag, the computer can overheat.
Check this situation by pressing the caps lock key.
for PowerBook G4 (17-inch 1.67GHz):
If the LED glows, the PMU is running on the logic board. After pressing the caps lock key
and perhaps other methods of waking it up fails, including closing the lid to go to sleep and
try waking again, hold the power button down for six seconds to force a shut down of the
computer. Restart the system to check if it boots up normally.
Note: Previously when the keyboard was connected directly to the power manager this
method worked under all conditions, however as a USB device, the OS may be hung and
the keyboard cannot respond. So if the caps lock light does not come on, the computer
may be drawing power. If in doubt, hold the power button down for six seconds to force a
shut down of the computer.
for PowerBook G4 17-inch (1.5GHz) and earlier computers:
If the LED glows, the PMU is running on the logic board. After pressing the caps lock key
and perhaps other methods of waking it up fails, hold the power button down for six
seconds to force a shut down of the computer. Restart the system to check if it boots up
normally.