Muxlab HDMI 1x4 Distribution Hub - Manual (Page 19)

© MuxLab Inc. HDMI 1x4 Distribution Hub Installation Guide
Page 19
4.
Troubleshooting
The following table describes some of the problem symptoms, the
probable causes and possible solutions. If the information below
does not solve the problem, the technical support contact
information can be found at the end of this section.
Problem Probable Solutions
No Image • Check that the Power LED (blue) is ON. If not, check power supply
• Check that the Source LED (orange) is ON. If not, check that the HDMI source is on, and (if
applicable) that the Transmitter Balun is on
• Check that at least one Display LED (orange for Local Display, green for Remote Display) is ON.
If not, check that display devices are on and (if applicable) Receiver Baluns are on
No Image • If Source LED and at least one Display LED is ON, check that UTP/STP cables are not inverted
No Image • Display devices may not support the current EDID setting. Set EDID selector to Position 1 or 2
No Image
• Ensure that the HDMI source is plugged to the Hub input, not the Hub output
• Power down and then power up the Hub
No Image
• Connect the display devices directly to the HDMI source to ensure that this works
• Ensure that HDMI cables are less than 6 ft long
• Ensure that Receiver/Transmitter Baluns are powered up and work on their own
• Ensure that Power Supplies are not mixed-up (Hub requires 1.25 A; Baluns require 500 mA)
White Dots in Image
or Flickering Image
or Choppy Sound
• Verify cable lengths
• Use STP cables
• Set EDID selector to Position 1 or 2
• If cascading multiple hubs, ensure that UTP cable lengths are 25% less than maximum allowable
Wrong Image
Appears • Only one source may be connected to the Distribution Hub at any one time. MuxLab does not
support switching between input ports
Not All Display
Devices Work
• Ensure that all cable lengths are within specification
• If EDID selector is in Position 3, ensure that lowest resolution display device is connected to the
Copy Port.
• Set EDID selector to Position 1 or 2
• Ensure that the HDMI source is outputting a signal compatible with all the display devices (try
1080i or 480p). NOTE: The EDID selector does not prevent the user from choosing an
incompatible mode