AppleVision 1710, ColorSync 17-inch Displays: Screen flickers without ADB

Incorrect cable setup can cause the following symptoms on an AppleVision 1710, 1710AV displays and on ColorSync 17-inch Displays (AV model included) connected to a Power Macintosh 4400: If you turn on the computer first and then turn on the monitor, the screen may come up in 640-by-480 resolution and may flicker.

Note: The ColorSync 17-inch and 20-inch Displays were formerly named the AppleVision 750 and AppleVision 850 Displays, respectively. The "AV" suffix is appended to the monitor name as appropriate.

If an AppleVision monitor's ADB cable is not connected to the computer, the monitor will default to 640-by-480 resolution and you will be unable to use AppleVision software to configure your monitor. In addition, if you are using the display with a Power Macintosh 4400, the screen may flicker if two conditions are met:
- the ADB cable is not connected AND
- you turned on the computer before turning on the monitor. (If you power on the monitor before you turn on the computer, the flickering will not occur.)

To correct this problem, shut down the computer and the monitor (use the monitor's on/off button), and check to be sure that:
- the monitor's ADB connector is securely plugged in to the Macintosh ADB connector.
- the monitor's video connector is securely attached to the Macintosh built-in video connector.
- the Macintosh keyboard cable is connected to the monitor's ADB port.
See your User's Manual for complete setup instructions.

After verifying that the cable setup is correct, power on the computer and display, and check to make sure that the screen is now normal.

Published Date: Feb 20, 2012