Apple PowerBook Duo Dock (including Duo Dock Plus) - Manual (Page 15)

Turning on the PowerBook Duo System
To turn on the docked PowerBook, press the Power On key on your
external keyboard. On Apple keyboards, the key is marked with a triangle
pointing left.
Once the PowerBook is on, you have access to all equipment connected to the
Duo Dock.
Trouble?
m Nothing happens when you press the Power On key.
Review the setup instructions and make sure everything is plugged in
correctly. Then try pressing the Power On key again. If you still get no
results, press the power button on the back of the dock.
m You hear sounds that suggest the PowerBook is working, but you can’t see
anything on the monitor.
Make sure the monitor cable is plugged in correctly.
Make sure the monitor’s power cord is plugged in and make sure that
its power switch is on. Then adjust the brightness and contrast controls
as necessary.
Power button
9 Using the PowerBook Duo Dock