
Troubleshooting
5-6
Troubleshooting
Power Subsystem Troubleshooting Table
Use the following table to troubleshoot specific power subsystem problems. The numbers in
the left-hand column indicate specific references from the Power column in the
Main Trouble-
shooting Table
.
TABLE 2-4.
Power Subsystem Troubleshooting Table
Power Supply Alarms
Power supply alarms are indicated by red LEDs on the front of each power supply module.
They consist of voltage, fan, and temperature alarms.
•
The voltage alarm indicates that one of the supply voltages is either too high or too low.
•
The fan alarm indicates that the fan has stalled.
•
The temperature alarm indicates that the temperature is elevated in the power supply. This
may be caused by dirt or dust blocking the airway, a defective cooling fan, or by operation
in extreme temperatures.
Note: Optional redundant power supplies may be fitted to UTAH-400 systems.
In this configuration, the failure of a power supply should not affect nor-
mal system operations, but users would be unaware of the power supply
failure. Thus, it is highly advisable to utilize the SMPTE alarm output pro-
vided at the rear of the chassis.
Problem
Check
1
No video output
•
Power applied to video frame?
•
Warning indicators on the front of each power supply?
•
Control cable between chassis connected?
2
No audio output
•
Power applied to audio frame?
•
Warning indicators on the front of each power supply?
•
Control cable between chassis connected?
3
Alarm active
•
Voltage alarm active (LED on)?
•
Fan alarm active (LED on)?
•
Temperature alarm active (LED on)?
4
Controller power
•
Power applied to controller frame?
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 ...