
Troubleshooting
5-4
Troubleshooting
Video Subsystem Troubleshooting Table
Use the following table to troubleshoot specific video subsystem problems. The numbers in the
left-hand column indicate specific references from the Video column in the
Main Trouble-
shooting Table
.
TABLE 2-2.
Video Subsystem Troubleshooting Table
Problem
Check
1
No video output
•
Control cable connected, or internal con-
troller functional?
•
Different input works on output bus?
•
Other outputs functional?
2
Unable to select a specific input
•
Control panel programming correct?
•
Output signal level locked or protected?
3
Unable to select any input
•
Control cable connected?
•
Control panel defective?
•
Controller failure?
4
Video flash when switching
between inputs
•
Input sources timed correctly?
•
Input reference signal present and timed?
•
Input reference correct standard?
•
Correct video standard jumper set on con-
troller board?
5
Inputs / Outputs inaccessible
•
Expansion matrix crosspoint cards
present?
6
Sync missing on video output
(analog)
•
Sync present on selected input?
•
Normal DC level on input?
7
Video output level incorrect
•
Input level correct
•
Output terminated at destination (analog)?
•
Input/output compensation jumpers cor-
rectly set?
8
Sparkles on video output (digital)
•
Input signal amplitude too low?
•
Cable length > 300 meters on input?
9
Monitor Matrix not functional
•
Selected correctly on control panel?
Summary of Contents for Utah-400
Page 1: ...The Utah 400 Digital Routing Switcher 144x144 Systems System Setup and Operation ...
Page 14: ...TOC 6 The Utah 400 ...
Page 18: ...F 4 List of Figures ...
Page 31: ...144x144 Router 1 13 System Configurations FIGURE 1 4 144x144 with Redundant Crosspoints ...
Page 32: ...Introduction 1 14 Introduction ...
Page 66: ...Configuration and Operation 3 10 Configuration and Operation ...
Page 94: ...Utah 400 Components 4 28 Utah 400 Components ...
Page 124: ...Troubleshooting 5 10 Troubleshooting ...