LG Nexus 5 Service Manual
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3. TROUBLE SHOOTING - 141 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Main MIC C16024DNIC1602633p 33p C1602 5 1800 FB16000 1800 FB16001 D1601 0D16008D16009 MIC16000 GOERTEK -42DB 150OHM OMNI 1.5 TO 3.6V 3.10 * 2.5 * 1.1T 4 3 2 1P G1G2O MAIN_MIC_GND MAIN_MIC_BIAS MAIN_MIC_P Main MIC RevH => Rev10 (0702) MEMS, Top Type, Wide Band
3. TROUBLE SHOOTING - 142 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.8.4 SUB MIC troubleshooting A sub MIC is located on Main PCB. It operates in case of voice call (Speaker phone). START Check the MIC signal by Speaker Loop back test Yes Yes Yes Yes Yes No No No No No Is Speaker sound OK? Change the WCD9320(U10000) Is receiver Sound OK? END END END END END Change The main PCB Check the MIC mesh filter, rubber. Is voice signal ok? Check the MIC hole to make clear the voice signal path Is voice signal ok? Check the sub MIC. Is voice signal ok?
3. TROUBLE SHOOTING - 143 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only LGE Internal Use Only Sub MIC Rubber Front Assembly TOP WCD9320 Sub mic(MIC10000)
3. TROUBLE SHOOTING - 144 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only MIC10000 GOERTEK -42DB 150OHM OMNI 1.5 TO 3.6V 3.10 * 2.5 * 1.1T 4 3 2 1P G1 G2 O D10001 UCLAMP0541Z EAH61693001 D10002D1000 3 C10024 33p FB10004 1800 C1002333p 1800 FB10005 SUB_MIC1_GND SUB_MIC1_BIAS SUB_MIC1_P RevC->Rev10 (0628) Sub_MIC1 '13.03.18 Sub mic(MIC10000)
3. TROUBLE SHOOTING - 145 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.8.5 Ear-MIC troubleshooting Ear MIC control signals are generate by MSM8974(U3000), WCD9320(U10000), FSA8008UMX(U7001). Case A. Unable detection of headset insert. START Didn’t display headset icon and did play sound via Speaker although headset insert Yes Yes Yes No No No Check the left signal and detection line short when headset inserted? Change the WCD9320(U10000) Is receiver Sound OK? END END END Change The main PCB Check the EARJACK sound play via headset? Check the left signal(HPH_L) and detection line(EARJACK_DETECT) are shorted when headset inserted. See PCB Contact terminal also.
3. TROUBLE SHOOTING - 146 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only LGE Internal Use Only Check detection is okay TOP WCD9320
3. TROUBLE SHOOTING - 147 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOT EAR_Detect(Test Point) HPH_L(Test Point) C10001 100p R10038 8.2 0 R1003 4 R10037 8.2 C10000100pC1000 2 10nD10007 EAH61995401 RClamp0521Z.TN TD10008ZD10003D10006 J10000 EAG63511001 HG05-AB3590 S/W_Detect SPK_L SPK_R MIC GNDFB10001 1800 FB100021800 DNI R10031 FB10000 1800 R10005 10KR10004 10K EJ_MICHPH_REF HPH_LHPH_R EARJACK_DETECT revA->revB(04.22) Delete:revB->revC(0603) Change:rev10->rev11_update(0903) Change:rev10->rev11(0729) Change:rev11->rev11_update(0903) Side contact '13.04.09 0.4mm 3.5pi Ear Jack Connector EAR_Detect(Test Point)HPH_L(Test Point)
3. TROUBLE SHOOTING - 148 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Case B. No Sound from Ear-mic START Check the Mic signal by Voice recording. Yes Yes Yes No No No Check parts about Mic Bias(1.8V) works well ? Change the WCD9320(U10000) Is receiver Sound OK? END END END Change The main PCB Check the touch FPCB Mic is OK?
3. TROUBLE SHOOTING - 149 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only TOP Mic Bisa(Test Point) C10001 100p R10038 8.2 0 R1003 4 R10037 8.2 C10000100pC1000 2 10nD10007 EAH61995401 RClamp0521Z.TN TD10008ZD10003D10006 J10000 EAG63511001 HG05-AB3590 S/W_Detect SPK_L SPK_R MIC GNDFB10001 1800 FB100021800 DNI R10031 FB10000 1800 R10005 10KR10004 10K EJ_MICHPH_REF HPH_LHPH_R EARJACK_DETECT revA->revB(04.22) Delete:revB->revC(0603) Change:rev10->rev11_update(0903) Change:rev10->rev11(0729) Change:rev11->rev11_update(0903) Side contact '13.04.09 0.4mm 3.5pi Ear Jack Connector Mic Bisa(Test Point)
3. TROUBLE SHOOTING - 150 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.9 Camera 3.9.1 8M OIS Camera Trouble Shooting 8M OIS camera control signals are generated by MSM8974 Disconnect and reconnect camera connector (CN9000) Yes Yes No No No No START TP1 : 1.2V TP2, TP3 : 1.8V TP4 : 2.7V TP5, TP6 : 2.8V Camera is OK? Camera is OK? TP7 : 19.2MHz END Change the Main Board Change the Camera module END Yes Yes