G406L User Guide Document: G406L-2
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Technical Support
20. Trouble Shooting
20.1. Front Panel LED lights
➢
User should see Input / Output LED lights in each channel. If no light illuminated in specific
channel, please check Input / Output connecting cables, signal source & monitor in that channel.
➢
If user sees continuous flashing
at 0.5” interval in Power LED, it means OSD may be locked.
Please press [Menu] key for 5 seconds, it will disable [OSD locked] function.
➢
If Power key LED is
flushing at 1” interval, the OSD Menu is locked and can’t be used. Please use
remote controller and press [850] number keys to disable OSD Menu Lock.
20.2. Intermittent or Loss of Input Signal
➢
Check the HDMI cable quality and make sure all cables are fitted correctly. 4k/60 signal requires
high speed certified cables.
➢
Cable length: Connecting cable length should be short as possible. Replace a short cable to verify
the possible root cause.
➢
HDCP compliant issues: If the input source or the monitors are not HDCP compliant, it is possible
to stop G406L from negotiating HDCP link and show intermittent, abnormal or no image.
➢
Resolution issues: check if signal source and connecting cables can provide right signal requested
by G406L.
➢
DVI/HDMI signal compatibility: some display devices may only support HDMI or DVI video signal
and execute wrong signal format detecting. The default output is HDMI. User can change output
with DVI format through [Options]
→
[Setting]
→
[DVI]
→
[On].
➢
Usually, to swap with different cable, output channel, signal source and monitor can verify the root
cause for the failure.
➢
When it is possible to have signal compatibility issue, user can add one HDMI splitter or switch in
the middle to change signal impedance. It may fix the issue.
20.3. Image rotation can
’t be implemented
➢
If the input signal is above 4k/2k @30Hz, image 90/270 degrees rotation function will be disabled.
20.4. Video quality issues
➢
Use the highest resolution and number of color bits (RGB 4:4:4) images allowed by G406L to be
used as a signal source whenever possible.
➢
There are a number of lower-quality AV players, the specification and actual output are difference,
or because of the use of lower color sampling bits or poor image compression technology,
resulting in lower quality or image is not smooth (LAG).
➢
If the use of H.264/H.265 compressed files, please select a player with hardware decoding to get
