Samsung SCQ-041AP - Manual (Page 49)

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Appendix C, Troubleshooting
While using the system, certain unexpected situations may cause
problems with the system. Many times system difficulties can be solved
through a simple troubleshooting check.
If you encounter any problem using the SCQ-041P, please check the
following points.
If the screen is off.
Check the power cable and all other data cables in the other
components.
If the Function buttons in the front of the system are not working.
Check if the current mode is the alarm mode.
If you cannot convert the quarter screen display to single screen display.
Check whether the monitor cable is connected to the QUAD ONLY
OUTPUT terminal marked with “ ” from the output terminals in the
back of the SCQ-041P.
If the problem persists after taking the actions described above, please
contact the supplier to get expert technical assistance.
NOTE
If you are not familiar with the system, please ask for our professional
assistance.