Diagnostic Alert: Loss of Sync event on module

Potential Symptoms

  • One of the SATA ports fails the module self test using a known working SATA cable.
  • Module self test will not start on module.
  • VIP-4060 PL5 port A/B test shows red modules.
  • LED port indicator(s) on the back of the module(s) may be blinking faster than the normal rate. 
  • The connector for that port may be fully or partially pulled off the module.

IDM / System Health Event(s)

  • Loss of Sync event may be present on module.
  • Checksum Error events may be present on module

Environment

  • Product: DB-4000, DB-4100, DB-4200, DVX, DVN
  • Component: PL5x module 
  • Control System:

Cause

  • The module receives ProLink5 data on two ports - A and B. A loss of sync on one port will cause the module to switch to the other port. While a loss of sync itself is a non-visual event, it may be caused by the reset or failure of a ProLink5 node (PLR or module) directly connected to the PLR, and therefore may be an indirect indicator of a visual outage.
  • A persistent loss of sync on a ProLink5 circuit indicates that module data redundancy has been lost. Another loss of sync on the same circuit will result in a visual outage affecting all modules between the two points of failure.
  • Failed SATA port on the module.

Resolution

  • Look for events indicating that the ProLink5 node connected to Port A of the module experienced a reset or diagnostic failure, and use the display's webcam to determine if there are any visual issues occurring on the display.
  • If no such events exist, inspect the Serial SATA cable connection between the module and the ProLink5 node connected to port A of the module.
  • Replace the module.

Related Resources

KB ID: DD2357343


DISCLAIMER: Use of this content may void the equipment warranty, please read the disclaimer prior to performing any service of the equipment.

DAKTRONICS DOES NOT PROMISE THAT THE CONTENT PROVIDED HEREIN IS ERROR-FREE OR THAT ANY DEFECTS WILL BE CORRECTED, OR THAT YOUR USE OF THE CONTENT WILL PROVIDE SPECIFIC RESULTS. THE CONTENT IS DELIVERED ON AN "AS-IS" AND "AS-AVAILABLE" BASIS. ALL INFORMATION PROVIDED IN THIS ARTICLE IS SUBJECT TO CHANGE WITHOUT NOTICE. DAKTRONICS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTIES OF ACCURACY, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. DAKTRONICS DISCLAIMS ANY AND ALL LIABILITY FOR THE ACTS, OMISSIONS AND CONDUCT OF YOU OR ANY THIRD PARTIES IN CONNECTION WITH OR RELATED TO YOUR USE OF THE CONTENT. ADJUSTMENT, REPAIR, OR SERVICE OF THE EQUIPMENT BY ANYONE OTHER THAN DAKTRONICS OR ITS AUTHORIZED REPAIR AGENTS MAY VOID THE EQUIPMENT WARRANTY. YOU ASSUME TOTAL RESPONSIBILITY FOR YOUR USE OF THE CONTENT AND ANY LINKED CONTENT. YOUR SOLE REMEDY AGAINST DAKTRONICS FOR DISSATISFACTION WITH THE CONTENT IS TO STOP USING THE CONTENT. THIS LIMITATION OF RELIEF IS A PART OF THE BARGAIN BETWEEN THE PARTIES.

The above disclaimer applies to any property damage, equipment failure, liability, infringement, or personal injury claim arising out of or in any way related to your use or application of the content, whether such claim is for breach of contract, tort, negligence or any other cause of action.