Issue Description
Product type: MA5600
Baords type : H565ADEE
Software version : V3R3
Symptom: (when power on for the first time all service board is not working but the control board working )
story:
in one site we ONE DSLAM cabinet contains three frame (A,B and C)
when the site is powered up all ADEE boards in Frame A,B are not (working)
cabinet
(the LED is still off) and all ADEE cards in frame C are powered on normally
Alarm Information
in Frame A : the fan tray is working nomally and SCU working nomally but all ADEE boards are not working
when use the
Display board 0 the out put is :
Handling Process
to allocate the problem i made :
1.unplug and plug the one off the Faulty boards in Frame A (the board still off)
2.Switch off SW1 in PDU in order to power off the Frame A and then Switch on to power on and measure the voltage (all the board are powered off except the SCU board (main control board)
3.Swap one board(ADEE) from Frame C with one from Frame A (we found that Board form frame C directly works normally in Frame A)
and (the Board form frame A still power off ) the problem allocated in ADEE hardware in all boards in frame A.
4.by using multi _meter i have checked the Fuse ( F1
multi-meter
i all boards in Frame A and B we found them are faulty (this fuse is connected to power source in order to protect the boards from un expected power changes)
to solve the problem i replace the Damage fuses and re-install the board inside the frame the board powered on normally.
Root Cause
the problem reason :
1.power problem (over/under voltage)
2.Frame problem(can’t connect the power to ADEE boards)
3.problem with SCU
4.the ADEE boards are Damaged
Suggestions
1.it is better if you will power on the site it is better to check the voltage of power system and protections of the service in order to avoid electrical problems that might affect the equipment.
2.it is better to keep one Additional service board only for test.
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