Marine PC MPC-AWM3V User Manual page 18

APPENDIX B
Symptom: Display has rolling "bars" across the screen or vertical shaded bars on
Possible Problem
Defective video cable
Interference from adjacent equipment
Horizontal size is not adjusted
Symptom: Picture quality, image stability is distorted.
Possible Problem
Proper cable grounding and shielding
Improper video display settings
Display unit is farther than 3 m (10 ft) from signal
source
Multiple Monitors are driven from the same signal
source.
Monitor has incorrect or bad sync signals.
Symptom: Display image is not properly sized
Possible Problem
OSD adjustments need to be made
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UM-MPC-AWM3V(A) 10/2011
(CONT'D)
Solution
On a known good display source, confirm the video
cable is not defective.
For proper grounding and shielding, verify use of a
proper video cable.
Keep the cable away from sources of EMI such as
electric motors, or unshielded RF
sources such as radar and microwave.
In the OSD, adjust the Video Horizontal controls.
Solution
Verify the use of a proper video cable with suitable
grounding and shielding. Keep the video cable away
from sources of EMI and RFI.
Check signal source for proper signal.
Check for proper display properties selection of the
display pixel setting.
Single cable lengths in excess of the standard 3 m
(10 ft) cable should be of high quality shielded ca-
ble. Contact DSE for information on custom cables.
Splitting the video signal divides the strength of
the signal. A video signal booster (line driver) is
recommended if installation requires more than one
Monitor driven from a single video source.
Check for proper video cable installation, or replace
suspected faulty cable.
Solution
Adjust the Video Vertical and Horizontal
controls through the OSD.