18
Video to PC/HDTV Switching Scaler w/Audio
5. Troubleshooting
There are no field serviceable parts or circuits in the device. If you
think that the device is malfunctioning, please first try to reset to
factory default settings:
3.1 Resetting the AC138A to Factory Defaults
To reset all parameters back to the factory preset value, press the
“Mode” and “Adjust” buttons simultaneously for over 10 seconds. The
‘Power’ led will turn off when the buttons are pressed and then turn on
again when the reset has occurred.
3.2 Calling Black Box
If you determine that your unit is malfunctioning, do not attempt to
repair the unit. Contact Black Box Tech. Support at 724-746-5500.
Before you do, make a record of the history of the problem. We will be
able to provide more efficient and accurate assistance if you have a
complete description, including:
• The nature and duration of the problem;
• The components involved in the problem—that is, what type of
cable, makes and models of computers and monitors, etc.
• The results of any testing you’ve already done.
3.3 Shipping and Packaging
If you need to transport or ship your AC138A:
• Package it carefully. We recommend that you use the original
container.
• Before you ship the unit back to Black Box for repair or return,
contact us to get a Return Authorization (RA) number.