Service manual

Always On UPS Systems
M0704_NX_Series_Service_Manual V2.17 2012-06-12 57
20. POWER SUPPLY (3B PCB)
This is the main power supply for the PCB and is the interface between the Main Control PCB and the Battery supply.
It provides battery condition information to the Main Control PCB to control the Rectifier/Charger. It also provides visual
indication of the charging mode.
Figure 20.1
Location of 3B PCB in the PCB Module