Knowledge Base - FAQ

HCU loses its boot record if it is shut down

Tuesday, December 31, 2019
Submitted by ryan.grace on January 25, 2023 - 3:46pm
HCU loses its boot record if it is shut down
Almost 100% of the time this is caused by a bad Lithium battery on the CPU card inside the HCU. You must always firest tuen the HCU off. Unscrew and slide the CPU from its slot. Remove the battery. It is not round but square and may times it is yellow or black. Go to your local battery replacement store and purcahse it. Replace the battey and reconfigure the HCU IP info.

Product Family:

Support at Every Step

We provide support, services, comprehensive training and the resources you need. It’s all part of what we do to maximize the value of your VIAVI investment.

Value add services that compliment your VIAVI system solution and instrument portfolio to provide a total cost of ownership

Customer Service that provides Return Material Authorization (RMA) for repair and calibration

Technical education solutions, product training, and blended learning for technicians who are using new products or working with existing tools

Technical Assistance Center to assist you in using/configuring products or address issues regarding product performance