Monitor - IBM Aptiva Hardware Maintenance Manual

Machine type 2137, 2138 and monitors type 2122, 2124, 2126 and 2127 for service level a
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Monitor

First, set the system to VGA mode. To do this in Windows 95, depress the F8
function key during startup. Safe mode (VGA) will be set for Windows 95. 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 95, 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 5-28 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.
NOTE: If the monitor was not sold together with the system unit, you may
need to refer to the service information provided with the monitor.
2-42

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