the LPU board of NE40E&80E restart itself

Latest reply: Mar 27, 2016 18:58:15 1633 1 0 0
Product and version:NE40E&80E V600R007C00SPC300

The phnomenon :Suddenly, the LPU board of NE40E&80E restart itself, and the business service interrupts.
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Osaideo Created Mar 27, 2016 18:58:15 Helpful(0) Helpful(0)

Alarm Information
Nov 27 19:27:21.500.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[185]:SlotID 1, i2c1, address33, channel3 voltage below fatal threshold, voltage is  0.00V.
Nov 27 19:27:21.470.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[186]:SlotID 1, i2c1, address33, channel2 voltage below fatal threshold, voltage is  0.00V.
Nov 27 19:27:21.470.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[187]:SlotID 1, i2c1, address33, channel0 voltage below fatal threshold, voltage is  0.00V.Nov 27 19:27:30.680.1+03:00 DC02-WAN-R1 %%01SRM/4/MBUSBOARDRESET(l)[149]:MonitorBUS detects SlotID1 reset !
Handling Process

(1)Check the logs, we find there are many warnings :

Nov 27 19:27:21.470.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15168985]:SlotID 1, i2c1, address33, channel0 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.470.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15168985]:SlotID 1, i2c1, address33, channel0 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.470.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15168992]:SlotID 1, i2c1, address33, channel2 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.500.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15168993]:SlotID 1, i2c1, address33, channel3 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.500.8+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15168994]:SlotID 1, i2c1, address33, channel4 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.550.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169001]:SlotID 1, i2c1, address33, channel5 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.550.8+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169002]:SlotID 1, i2c1, address33, channel6 voltage below fatal threshold, voltage is  0.02V.

Nov 27 19:27:21.560.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169003]:SlotID 1, i2c1, address33, channel7 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.580.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169008]:SlotID 1, i2c1, address33, channel8 voltage below fatal threshold, voltage is  0.01V.

Nov 27 19:27:21.600.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169009]:SlotID 1, i2c1, address33, channel9 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.620.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169010]:SlotID 1, i2c1, address33, channel10 voltage below fatal threshold, voltage is  0.00V.

Nov 27 19:27:21.640.1+03:00 DC02-WAN-R1 %%01SRM/1/VOLBELOWFATALFAIL(l)[15169017]:SlotID 1, i2c1, address33, channel11 voltage below fatal threshold, voltage is  0.01V.

(2)after confirm with R&D, the power module is damaged.
Root Cause

the damaged power module causes the LPU board restart itself
Solution

apply spare part, replace a new LPU board.

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