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User Guide for Cisco Digital Media Manager 5.4.x
OL-15762-05
Chapter 15 Touchscreens, Projectors, and Displays
Reference
Problem The image is intermittently black (CSCtw78742; CSCts83613).
Solution
Avoid incompatible combinations.
•
Have you used a DVI connector while our HDMI resolution autodetect feature was enabled on
your DMP? And then, was the reported resolution called “1920 x 1080?” If so, you must disable
the autodetection feature. Cisco DMP models support DVI connections only in combination
with VESA-standard resolution values—and VESA standards do not include “1920 x 1080.”
Instead, their equivalent is called “VESA_1080p.” You must choose and apply this resolution
value manually.
•
Do not enable HDMI autodetection with a display whose resolution is “DVI_1920p.”
•
Disable our HDMI resolution autodetect feature on your DMP when it reports that any 1080p
presentation system characterizes its resolution as “VESA_1080p.” Then, impose the resolution
value manually that DMPs use: “HDMI_1080p.”
Problem The image is blurred.
Solution
Try these possible workarounds.
•
Run Frequency Coarse and Fine tuning.
•
Turn Off the display, remove its accessories and signal cables, and then turn it On again.
•
Set the resolution and frequency to the recommended ranges.
Problem The image is too light OR too dark.
Solution
Adjust the brightness and contrast.
Problem Colors are not consistent, OR shadows are too dark, OR white areas are too white.
Solution
Adjust the color.
Troubleshoot Audio Quality
Problem Sound is too quiet OR is not audible.
Solution
Check the volume level.
Problem Sound frequency is too high OR too low.
Solution
Check the levels for treble and bass.
Troubleshoot the Handheld Remote Control Unit
Problem Buttons do not respond.
Solution
Check...
•
Battery polarities (+/-).
•
If batteries have lost their charge.
•
If the power is turned On.
•
If the power cord is connected securely.
•
If a fluorescent or neon lamp is turned On nearby.
Note When you use Digital Signs to lock your remote control and the front panel controls for your display, the
remote control cannot unlock them. Instead, you must switch the Safety Lock, Remote Control Lock, and Panel Lock
toggles all to Off in Digital Signs.