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IMP-400UHD User's Guide
11 Troubleshooting
This chapter recommends what to do if you have problems operating the IMP-400UHD.
In case the IMP-400UHD does not work correctly, please check the following items first.
･Are the IMP-400UHD and all devices plugged in and powered on normally?
･Are cables connected correctly?
･Are there no loose connections?
･Are correct cables supported by devices being used?
･Are specifications of connected devices matched to each other?
･Are settings of the sink device correct?
･Are there any nearby objects that may cause noise?
If the problem still cannot be solved, perform the following actions. Refer to manuals of connected devices as
well, since they may possibly be the cause of the problem.
Problem
●Video output
Video is not output.
58
Cause/Check item/Solution
Check the error code in "8.11.2 Sink device status".
･Error code 2:
Check if the source device is connected and powered on.
･Error code 3:
Signal is not input. Check [1] to [5] on the next page.
･Error code 4:
A problem may occur in the source device or HDCP
authentication. Check [2], [4] and [5].
･Error code 5:
If a sink device that is not HDCP compliant is connected:
- only video without content protection can be output
- black is output when signal with content protection is input.
- Some HDMI/DVI devices check if the connected device is
HDCP compliant and determines whether to output HDCP
signal or not. Since the IMP-400UHD is HDCP compliant,
audio may not be output if the IMP-400UHD is connected to
a sink device or AV amplifier that does not support HDCP. In
this case, disable HDCP input from the input device in "8.1.2
Input HDCP settings".
･Error code 6 and 7:
A problem occurs in the source device.
･Error code A:
Set "7.2 Selecting input channels" to a value other than "OFF".
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