Page 53
724-746-5500 | blackbox.com
Chapter 6: Troubleshooting
6.2 Picture
Problem:
Incorrect picture display.
Possible Cause #1:
Connection is disturbed.
Possible Solution #1:
Check the connection, length, and quality of the DVI-D
cable to monitor; tighten cable thumbscrews.
Possible Cause #2:
Transmission parameters are not suitable or not optimally set
for conditions.
Possible Solution #2a:
Run Auto Configuration (see Section 4.2.2).
Possible Solution #2b:
If necessary, set the parameters for the picture settings
manually (for example, phase and clock) (see Section
4.2.2).
Problem:
Parts of the picture are missing.
Possible Cause:
Wrong setting of picture size.
Possible Solution:
Optimize picture settings (see Section 5.1).
Problem:
Horizontal picture jitter.
Possible Cause:
Wrong settings of phase and clock.
Possible Solution:
Readjust phase and clock manually (see Section 4.2.2).
Problem:
Characters are smeared.
Possible Cause:
Wrong setting of phase.
Possible Solution:
Readjust phase manually (see Section 4.2.2).
Problem:
Fine vertical lines are missing.
Possible Cause:
Wrong setting of clock.
Possible Solution:
Readjust clock manually (see Section 4.2.2).
