Summary: When replacing the AC power board PAIA/PAIB on the MA5610/MA5616, if the operator removes the power board without powering off it beforehand (removing the 220 V AC power connector on the panel), there are potential safety hazards.
Product Line : Access Network Product Model: MA5616/MA5610
When replacing of the AC power board PAIA/PAIB on the MA5610/MA5616, the operator removes the AC power board without powering off the board beforehand (disconnecting the 220 V AC power plug from the panel).
Removing the power board before disconnecting the 220 V power plug from the board panel causes potential safety hazards.
The MA5610s/MA5616s installed with the PAIA or PAIB power boards that are delivered to sites before September 1, 2009 are affected.
The safety specifications of the H831PAIA/H831PAIB AC power boards used on the MxUs cannot fully meet the requirements, which may produce potential safety hazards to operators who remove the power boards without complying with safety rules.
Impact and Risk
There are potential safety hazards.
Measures and Solutions
The safety specifications of the AC power boards delivered after September 2009 have been strengthened.
Use the inspection tool to check the boards on the live network. Rectify the board with potential safety hazards.
For the inspection tool script, detailed delivery data, rectification method, contact CS coordinator Xue Guoqiang (Employee ID: 98735) for China market and Nie Bo (Employee ID: 92548) for markets outside of China.
Prewarning Expiration Condition
This prewarning will expire after the board check is complete.