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CHAPTER 1: HEADLINE
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CHAPTER 10: TROUBLESHOOTING
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BLACKBOX.COM
TABLE 10-1. PROBLEMS/CAUSES/SOLUTIONS
PROBLEM
POTENTIAL CAUSE
SOLUTION
Losing color or no video signal output
1. The cables may not be connected correctly or
may be broken.
2. Failed or loose connection
1. Check whether the cables are connected correctly
and are in working condition.
2. Make sure the connection is secure.
No output image when switching
1. No signal at the input/output end
2. Failed or loose connection
3. Input source is HDCP but the HDCP compliance
is switched off.
4. The display doesn’t support the input resolution.
1. Check with an oscilloscope or multimeter
if there is any signal at the input/output end.
2. Make sure the connection is secure.
3. Send command /%[Y]/[X]:[1]. or change the HDCP
compliance status in GUI.
4. Switch for another input source or enable the display
to learn the EDID data of the input.
Cannot control the device via front
panel buttons
Front panel buttons are locked.
Send command /%Unlock or select unlock in GUI
interface to unlock.
Cannot control the device via IR remote
1. The battery is depleted.
2. The IR remote is broken.
3. Beyond the effective range of the IR signal
or not pointing at the IR receiver
4. The IR receiver connected to IR In port is not
with a carrier.
1. Replace the battery.
2. Contact Black Box Technical Support
at 877-877-2269 or [email protected].
3. Adjust the distance and angle and point right at the
IR receiver.
4. Replace with an IR receiver with carrier.
Power Indicator remains off when
powered on
Failed or loose power connection
Check whether the cables are connected correctly.
EDID management does not work
normally
The HDMI cable is broken at the output end.
Replace with another HDMI cable that is in good
working condition.
There is a blank screen on the display
when switching.
The display does not support the resolution of the
video source.
1. Switch again.
2. Manage the EDID data manually to make the
resolution of the video source automatically
compliant with the output resolution.
Cannot control the device by control
device, such as a PC, through RS-232
port
1. Wrong connection
2. Wrong RS-232 communication parameters
3. Broken RS-232 port
1. Verify that there is a secure connection between the
control device and the unit.
2. Type in the correct RS-232 communication
parameters: Baud rate: 9600; Data bit: 8;
Stop bit: 1; Parity bit: none.
3. Contact Black Box Technical Support
at 877-877-2269 or [email protected].
