Specifications

m The software (driver) needed to communicate with the device may not be
installed in your System Folder. See the instructions that came with the
device.
m Two or more devices in the SCSI chain may have the same ID number.
Check the ID number of each device to make sure each one has its own
number between 1 and 6, and change any numbers that are not unique.
See Chapter 8 for help using SCSI devices.
External monitors
The external monitor is dark.
m Screen dimming may be on. Press any key or touch the trackpad button to
restore the screen’s brightness.
m There may be no power to the monitor. Make sure that the monitor’s power
cord is connected, and that its power switch is on.
m Try adjusting the monitor’s brightness and contrast controls.
The external monitor looks like it’s on, but the screen is blank.
m The computer’s power adapter must be plugged in when you use an
external monitor. With the computer in sleep or shut down, plug in the
power adapter and then wake or start up the PowerBook.
m Check to make sure the video cable connection is secure.
Disk drives and disks
The computer won’t start up from the hard disk, or the hard disk icon doesn’t appear on
the desktop.
m There may have been a temporary software problem. Shut down the
computer, wait at least 10 seconds, and then turn it on again.
m There may be a problem with the system software on the hard disk. You
can try two things:
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Chapter 12