基站小区失效倒换测试步骤（英文版）

merlinc

1，Description：
	XXXXX O01_BBU01 NR Cell Unavailable  ,NR DU Cell TRP Unavailable,  AAU2 link  faulty.
	Red   light on board UBBPg2a( interface01, Slo5 of BBU)
2,Alarm PIC:
	As showedn in Sheet "PIC"
3, Prior  Analysis:
	3.1	Xn interface Faulty
		X2 interface Faulty
		This arlarm normally dut to  configuration of neibour cell
		it should be debugged on the background,not SE' duty.
	3.2	DU cell TRP unavaliable
		This arlarm normally dut to software  version update.
		it should be debugged on the background,not SE' duty.
	3.3	RU Unit CPRI interface Error
		Red   light on board UBBPg2a( interface01, Slo5 of BBU)
		it is SE' duty to test.
4,Preparation:
	Tools:	Multimeter
		Optical power meter if can
		Laptop
		Cellphone with camera
		Safety suits and protective tools
		Tools box inludeing wrenchs,  screwdrivers,and so on.
	Spare:
		SFP if can
		CPRI if can
		UBBPg2a if can
		Accessories including Waterproof  mastic,Waterproof tape,Electrostatic discharge tape,copper lugs and so on.
5, Switch  Test
	5.1	Points for attention
		The principle of switching test is  due to elimination method
		Each time only switch one  component.By test, we can tell if the component ok.
		And in order to  prove that action is always right, we  should take a picture after every check.
		Because we have identified that it  is link or AAU or interface problem, so we just check link light in switch  test.
		For   cell working well or not, we don't care it in testing.
	5.2	The objects will be tested
		Power of AAU--AAU is a precision  device, so it is very sensitive to voltage
		SFP on board UBBPg2a( interface01,  Slo5 of BBU)
		SFP of AAU2
		CPRI of AAU link
		the interface 01 of board UBBPg2a(  Slo5 of BBU)
		AAU5645
		Confustion 1:
			AAU on site, but  in my  list, there should be  RRU.
	5.3	The process		In test, pls note  SN  codes of all tested emothion.
		5.3.1	Take pic
			take a photo on BBU panel
			Take a photo on board UBBPg2a(  interface01, Slo5 of BBU)
			Take a photo on board UBBPg2a(  interface01, Slo4 of BBU)
			take a photo on AAU2 type label
			take a photo on AAU2 light
		5.3.2	Power Checking
			Firstly ,checking the power of  output to AAU2 from DCDP in cabnet.Take a PIC pls.
			Secondly checking the power of input  to AAU2 on the tower or manpole.Take a PIC of AAU2 lights pls.
			Remark:	Loose joints can easily cause problems or burn out of the equipmen
		5.3.3	SFP of BBU checking
			In switch test, we want to find the  broken part.
			So please just change the part to be tested  to another good cell link.
			Because there may be damage to  multiple parts, every part needs to be switch tested.
			Certenly, when all parts have been  tested, we can move good part to broken AAU2 link for confirmation.
			Pls apply permission from NOC,  firstly.
			5.3.2.1	Move SFP on board UBBPg2a( interface01, Slo5 of BBU) to other good cell  link.
				if the good cell link still up, the tested SFP is good.
				Otherwise, the tested SFP is fault.
				pls take a PIC for this to show light status.
				Return to the replaced unit to restore the original good link to normal
				Make sure the link light back green.
			5.3.2.2	If there  is  SFP on board UBBPg2a( interface01, Slo4 of  BBU) also, pls repeat 5.3.2.1 steps.
				Ps: sometime AAU can take two CPRI .
		5.3.4	SFP of AAU2 Checking
			Move tested SFP to other good cell  link .pls repeat 5.3.2.1 steps.
			Ps: sometime AAU can take two  SFP,pls do  switch  test one by one. Do not do two switch test  at same time , pls.
		5.3.5	CPRI of AAU  Checking
			Move tested CPRI to other good cell  link .pls repeat 5.3.2.1 steps.
			Ps: sometime AAU can take two  CPRI,pls do  switch  test one by one. Do not do two switch test  at same time , pls.
		5.3.6	the interface 01 of board UBBPg2a(  Slo5 of BBU) Checking
			Move other good cell link to this  interface.pls repeat 5.3.2.1 steps.
		5.3.7	If there is link to the interface 01  of board UBBPg2a( Slo4 of BBU), pls do this Checking
			Move other good cell link to this  interface.pls repeat 5.3.2.1 steps.
		5.3.8	AAU2(AAU5645) checking
			Move other good cell link to AAU2 ,  pls repeat 5.3.2.1 steps.
		5.3.9	Confirmation
			Certenly, when all parts have been  tested, we can move good part to broken AAU2 link for confirmation.
			If you think it not necessary, this  step can be ignored.
6, Apply  spare
		If manager ask, pls put all PIC in  sheet "PIC" in this test report,
		If manager is nice people, just show  related PIC to him.
		Write down SN code and hardware  type, send it to manager . Then spare will be prepared in a few days.
	Work is done, thank you for efforts.