72     IBM Desktop System HMM
Monitor
First, set the system to VGA mode. To do this in 
Windows 98, depress the F8 function key during 
startup. Safe mode (VGA) will be set for Windows 98. 
Use the operating system's video setup to change the 
monitor resolution.
The monitors that come with the system are DDC2A/
B or DDC1/2B+ (Display Data Channel) compliant. 
While starting Windows 98, the DDC2 monitor passes 
resolution and frequency information to the system. 
The system interprets the data and sets up the proper 
refresh rate.
If the monitor type is set to the power saving mode, 
the screen remains black and the LED lights or 
flashes in amber color. When the monitor is turned on 
alone, or is turned on and connected to a powered-off 
system unit, the monitor LED blinks in amber color. 
Under the normal operating conditions, the LED lights 
in green color.
NOTE: 
 Some monitors have a detachable system I/O 
signal cable between the monitor and the 
system unit. Check the line voltage, power 
cord, and continuity for the system I/O signal 
cable before replacing the monitor. See 
“Monitor Port Signals” on page 127 for pin 
identification. 
001 -  START
•
 Power off the system unit and monitor. 
•
 Remove all adapter cards.
•
 Make sure that the monitor I/O signal cable is 
properly connected to the system unit and monitor. 
•
 Make sure that the power cords are properly 
connected to the system unit and monitor, and that 
the line voltage is correct. 
•
 Make sure that the monitor contrast and 
brightness controls are not turned too low. 
•
 Make sure that the diagnostics diskette is in the 
diskette drive. 
•
 Power on the monitor, and wait 20 seconds. 
•
 Power on the system unit.