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COS-100HD-B User's Guide
9 Troubleshooting
In case the COS-100HD-B does not work correctly, please check the following items first. Also refer to
manuals for connected devices as well, since they may possibly be the cause of the problem.
･Is the COS-100HD-B powered on correctly?
･Are cables connected correctly?
･Are there no short circuits, disconnections, or loose connections?
･Are appropriate cables for the COS-100HD-B being used?
･Connected devices are set correctly?
･Are there any nearby objects that may cause noise?
If additional assistance is required, please check the following items and refer to manuals of connected
devices as well.
Problem
● Video output
Video is not output.
58
Cause/Check item/Solution
If there are no problems with cable connections, first check [1] and
[2] below.
[1]
Is the EDID resolution setting of this device set to the input
resolution supported by the display device?
・If the EDID resolution is set to 1080i, some TVs do not
support that resolution.
・For output resolution for TVs (480i to 1080p), check the
vertical synchronous frequency .
・For output resolution for PCs (VGA to QWXGA), video may
not be output to LC monitors.
[2] Are signals output from the input device?
If the SIGNAL LED of the transmitter illuminates, check
[3]to[7];if it does not illuminate, check [8] and [9].
[3] If signals protected by HDCP are input, does the sink device
support the HDCP?
If the sink device that is not HDCP compliant is connected:
- only video without content protection (such as analog input
and test pattern) can be output
- black is output when signal with content protection is input.
Some source devices check whether the sink device is HDCP
compliant or not and they output video depending on the
result. In such a case, disable HDCP input in "7.3.1 [ C01 ]
HDCP input setting".
[4] If a test pattern of the transmitter is displayed, the input side
has problems. replace the HDMI cable with a shorter one (16
ft. (5 m) or shorter).
If a test pattern of the receiver is not displayed, the output side
has problems.
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