Page 1 Moto G (3rd Generation) TROUBLESHOOTING GUIDE Subhead (Arial, U/L, 36pt) © 2009 Motorola Proprietary & Confidential Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 2: Table Of Contents
10. LED / Vibrator / uSIM / microSD Troubleshooting ……..………..………….….. 194 11. Sensors Troubleshooting ……………………………………………...………….. 206 12. Touch Troubleshooting …………………………………………………………..218 13. Display Troubleshooting ……………………………………………………….….. 223 14. Camera Troubleshooting ………………………………………………..………… 230 15. Audio Troubleshooting …………………………………………………………….. 247 16. Headset Jack Troubleshooting ………………………………………………..….. 264 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 3: Snapshots Of Antennas
SNAPSHOTS OF ANTENNAS Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 4 ANTENNA AND ANTENNA FEED LOCATIONS Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 5 MAIN ANTENNA (LTE/WCDMA/CDMA/GSM) MATCHING CIRCUIT NA/VZW/Sprint/Latam/APAC SKUs EU/China SKUs EU/China SKUs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 6 LTE ANTENNA MATCHING CIRCUIT Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 7 LTE ANTENNA MATCHING CIRCUIT EU/China SKUs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 8 DIVERSITY ANTENNA (LTE/WCDMA/CDMA) MATCHING CIRCUIT NA/VZW/Sprint SKUs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 9 DIVERSITY ANTENNA (LTE/WCDMA/CDMA) MATCHING CIRCUIT EU/China SKUs EU/China SKUs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 10 GPS/WIFI/BT MATCHING CIRCUIT All SKUs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 11 FM MATCHING CIRCUIT Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 12: Snapshots Of Main Board
SNAPSHOTS OF MAIN BOARD Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 13 Snapshots of Main PCB / Daughter Board – Top and Bottom Top Side (Battery side) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 14 Main Board – Top Placement Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 15 Main Board – Bottom Placement Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 16: Lte/Wcdma/Cdma/Gsm Troubleshooting
LTE / WCDMA / CDMA / GSM TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 17 Master Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 18 North America SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 19 VZW SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 20 Sprint/Boost/USC SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 21 EMEA SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 22 LATAM SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 23 APAC SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 24 China CDMA SKU Block Diagram Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 25 LTE/WCDMA/CDMA/GSM RADIO CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 26 WCDMA B1 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 27 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 28 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 29 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 30 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 31 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 32 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 33 LTE B2,B25/WCDMA B2/CDMA BC1 Tx and Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 34 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 35 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 36 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 37 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 38 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 39 LTE/WCDMA B3/B4 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 40 LTE B3 TX Check Chart – No TX (EU/APAC/China SKU) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 41 LTE B3 TX Check Chart – Low TX (EU/APAC/China SKU) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 42 LTE B3 RX Check Chart (EU/APAC/China SKU) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 43 LTE B3 TRX CIRCUITS (PA + DPX + SP10T + SP2T) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 44 LTE B3 TRX Circuits (WTR + PA + DPX + SP10T + SP2T) Layout Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 45 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 46 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 47 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 48 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 49 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 50 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 51 LTE/WCDMA B5/B26 / CDMA BC0/10 Tx and Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 52 DUPLEXER & FAIL SP10T CHECK & REPLACE FL7150,L7157,C7154,U7000,C7001,C7000,C7027 CHECK ? COUPLE R & FAIL CHECK & REPLACE CONNECTOR C100,L101,J100,U100,R100 CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 53 PAM GAIN & C7111, C7113, U7110, C7115,R7109, DPX LOSS R7102,U7100,L7150,L7152,L7153,C7151,L7157, CHECK ? C7154,L7158, FL7150 FAIL SP10T LOSS CHECK & REPLACE CHECK ? U7000,C7027 COUPLER & FAIL CHECK & REPLACE CONNECTOR U100,R100,C100,L101,J100 CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 54 CHECK & REPLACE WTR4905 FAIL R3102,C3100,C3103,R3112,C3110,C3113,C3116, Voltage C3121 CHECK ? FAIL CHECK & REPLACE DPX & FL7150,C7155,L7157,C7154,L7158, MATCHING L7162,L7160,C7161 CHECK ? SP10T, CHECK & REPLACE FAIL COUPLER U7000,C7000,C7001,C7098, RF CON. U100,R100,C100,L101,J100 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 55 APAC/NA/China B5 Input Matching for LNA of WTR4905 MMMB PA Matching for duplexer antenna port, Latam/APAC/NA/China SP10T voltage Matching for Antenna Coupler out connector Output match & Switch for WTR4905 drive out Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 56 DPX + SP10T) Layout Input match for PA MMMB PA Matching for WTR4905 SP10T antenna port Output match for PA SP10T Coupler Input Matching for LNA of WTR4905 B5/B26/ BC0/BC10 ANT CON Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 57 LTE B20, WCDMA B8 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 58 CHECK ? C7024, FL7020, C7093, C7092 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U100B, C100B, L101B, J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 59 L7453, FL7450, L7460, C7461, L7479, C7066, C7024 CHECK ? DIPLEXER FAIL LOSS CHECK & REPLACE FL7020, C7093, C7092 CHECK ? COUPLER & FAIL CHECK & REPLACE CONNECTOR U100B, C100B, L101B, J100B CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 60 FL7450, L7455, L7460, C7461, L7479, C7456, C7476, MATCHING L7481, C7482, L7483 CHECK ? DIPLEXER, CHECK & REPLACE FAIL COUPLER C7066, C7024, FL7020, C7093, C7092, RF CON. U100B, C100B, L101B, J100B CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 61 LTE B20 TRX Circuits Output m atch & S witch f or W TR4905 d rive o ut Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 62 LTE B20 TRX Circuits Input m atch f or M MMB P A Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 63 LTE B20 TRX Circuits Output m atch f or M MMB P A Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 64 LTE B20 TRX Circuits Matching f or D uplexer T X P ort Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 65 LTE B20 TRX Circuits Matching f or D uplexer A NT, R X p orts a nd W TR i nput m atching Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 66 LTE B20 TRX Circuits Diplexer Coupler a nd R F c onnector Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 67 MMMB P A W TR PA o utput match D uplexer D iplexer Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 68 SP10T CHECK & REPLACE FL7170,L7177, C7174,U7000,C7001,C7000,C7027 CHECK ? COUPLE R & FAIL CHECK & REPLACE CONNECTOR C100,L101,J100, U100 CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 69 CHECK & REPLACE PAM GAIN & DPX LOSS C7111, C7113, U7110, C7115,R7109, CHECK ? R7102,U7100,L7171,L7172,L7177,FL7170,C7174 FAIL SP10T LOSS CHECK & REPLACE CHECK ? U7000,C7027 COUPLER & FAIL CHECK & REPLACE CONNECTOR U100,R100,C100,L101,J100 CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 70 CHECK ? CHECK & REPLACE WTR4905 FAIL R3102,C3100,C3103,R3112,C3110,C3113,C3116,C312 Voltage CHECK ? FAIL CHECK & REPLACE DPX & FL7170,C7175,L7182 MATCHING CHECK ? SP10T, CHECK & REPLACE FAIL COUPLER U7000,C7000,C7001,C7027, RF CON. U100,R100,C100,L101,J100 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 71 WCDMA B8 TRX CIRCUITS (PA + DPX + SP10T) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 72 WCDMA B8 TRX Circuits (WTR + PA + DPX + SP10T) Layout Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 73 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 74 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 75 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 76 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 77 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 78 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 79 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 80 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 81 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 82 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 83 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 84 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 85 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 86 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 87 LTE B12/B17 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 88 CHECK ? NA sku : C7066, C7095, FL7050, C7093, C7092 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U7,C100B,L101B,J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 89 CHECK & REPLACE FAIL DIPLEXER Common: L7479, C7081 LOSS SPRINT sku : C7065, U7050, C7091 CHECK ? NA sku : C7066, C7095, FL7050, C7093, C7092 COUPLER & FAIL CHECK & REPLACE U100B,C100B,L101B,J100B CONNECTOR CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 90 C7461, L7460 CHECK ? SP4T, CHECK & REPLACE FAIL COUPLER, Common: L7479, C7081, U100B,C100B,L101B,J100B RF CON. SPRINT sku : C7065, U7050, C7091 CHECK ? NA sku : C7066, C7095, FL7050, C7093, C7092 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 91 B12/17 TRX Circuits (PA + DPX + SP4T or Diplexer) Matching for Antenna Coupler out connector Matching for LNA Input of WTR4905 Diplexer PA power supply Output match for PA filter Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 92 B12/17 TRX Circuits (WTR + PA + DPX + SP4T or Diplexer) Layout WTR4905 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 93 LTE B13 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 94 FL7465, C7471, FL7466, C7067, C7096, C7025, CHECK ? C7094, C7092 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U100B,C100B,L101B,J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 95 DPX LOSS U7100 ,C7166, C7492, FL7465, C7471, CHECK ? FAIL LPF LOSS CHECK & REPLACE CHECK ? FL7466, C7067, C7096, C7025, C7094, C7092 COUPLER & FAIL CHECK & REPLACE U100B,C100B,L101B,J100B CONNECTOR CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 96 FAIL CHECK & REPLACE L7483, C7476, C7466, FL7465 , C7471 , FL7466, DPX & LPF CHECK ? C7067, C7096, C7025, C7094, C7092 COUPLER, FAIL CHECK & REPLACE RF CON. U100B,C100B,L101B,J100B CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 97 B13 TRX Circuits (PA + DPX +LPF) Matching for Antenna Coupler out connector Matching for LNA Input of WTR4905 Matching for duplexer Rx port PA power supply filter Output match for PA Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 98 B13 TRX Circuits (WTR + PA + DPX + LPF) Layout Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 99 LTE B28A/B Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 100 FL7435, L7440, C7441, FL7450, L7460, C7461, CHECK ? L7479, C7065, C7063, U7050, C7091 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U100B,C100B,L101B,J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 101 C7435, L7433, C7460, L7453, L7437, U7410, FL7435, L7440, C7441, FL7450, L7460, C7461, L7479, C7065, CHECK ? C7063, FAIL SP4T CHECK & REPLACE CHECK ? U7050, C7091, COUPLER & FAIL CHECK & REPLACE U101B,C100B,L101B,J100B CONNECTOR CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 102 C7446 , U7475 , C7480 ,L7483, FL7450, C7461, L7460, CHECK ? L7479, C7456, C7461, L7460, FL7435, L7440, C7441 SP4T, CHECK & REPLACE FAIL COUPLER, C7065, C7063,U7050, C7091, C7081, RF CON. U101B,C100B,L101B,J100B CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 103 LTE B28A/B TRX Circuits (PA + DPXs + SP2Ts+SP4T) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 104 B28A/B TRX Circuits (WTR + PA + DPXs + SP2Ts+SP4T) Layout Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 105 TDD/TD-SCDMA B34/39 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 106 CHECK & REPLACE CHECK ? U7000, C7027 COUPLER & FAIL CHECK & REPLACE CONNECTOR U100, C100, L101, J100 CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 107 FAIL Tx Filter CHECK & REPLACE Check FL7220, C7226 FAIL SP10T CHECK & REPLACE CHECK ? U7000, C7027 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U100, C100, L101, J100 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 108 R3102, C3100, C3103, R3112, C3110, C3113, C3116, Voltage C3121 CHECK ? SP10T, CHECK & REPLACE FAIL COUPLER, U7000, C7010, FL7010, L7015, R7015, C7016, L7036, RF CON. C4812, L7037, C7027, U100, R100, C100, L101, J100 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 109 R3102, C3100, C3103, R3112, C3110, C3113, C3116, Voltage C3121 CHECK ? SP10T, CHECK & REPLACE FAIL COUPLER, U7000, C7013, FL7010, L7015, R7015, C7016, L7036, RF CON. C4812, L7037, C7027, U100, R100, C100, L101, J100 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 110 LTE/TD-SCDMA B34/39 TX CIRCUITS (PA + FILTER + SP10T) PA voltage BPF Matching for BPF antenna port MMMB PA Input for PA Output match for PA SP10T voltage Antenna Matching for connector Coupler out SP10T Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 111 LTE/TD-SCDMA B34/39 RX CIRCUITS RX Filter SP10T Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 112 B34/39 TRX Circuits (WTR + PA + SP4T + SP2T) Layout WTR4905 Input Matching for LNA of WTR4905 BPF Output Matching BPF Band 39 Input Matching BPF SP10T Coupler BPF Output Matching BPF Band 34 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 113 TDD LTE B40 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 114 CHECK & REPLACE CHECK ? FL7350, C7356, U7050, C7091 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U100B,C100B,L101B,J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 115 GAIN & BPF U7300, C7308,U7340, C7346, FL7350, L7355, L7347, LOSS C7356, L7358 CHECK ? FAIL SP4T LOSS CHECK & REPLACE CHECK ? U7050,C7091 COUPLER & FAIL CHECK & REPLACE CONNECTOR U100B,C100B,L101B,J100B CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 116 CHECK ? FAIL CHECK & REPLACE PA & BPF L7394, L7392, C7393, C7391, C7346, L7347, FL7350, MATCHING L7358, C7356 CHECK ? SP4T, FAIL COUPLER, CHECK & REPLACE U7050,C7091,U100B,C100B,L101B,J100B RF CON. CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 117 B40 TRX Circuits (PA + BPF+ SP4T+SP2T) PA voltage Output match for PA PA with Switch SP2T Input Matching for LNA Output match for of WTR4905 WTR4905 drive out Antenna connector SP4T voltage SP4T Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 118 B40 TRX Circuits (WTR + PA + SP4T + SP2T) Layout WTR4905 Input Matching for LNA of WTR4905 SP2T SP4T Coupler Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 119 TDD LTE B41 Tx and Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 120 FAIL BPF&SP4T CHECK & REPLACE C7361,L7362,FL7360,L7367,C7365,L7368,L7369,C73 CHECK ? 66,C7060,U7050,C7050,C7051,C7091,C7081 COUPLE R & FAIL CHECK & REPLACE CONNECTOR U7,C100B,L101B,J100B CHECK ? FAIL TX LEVEL Go to TX CHECK CHART- Low TX CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 121 C7301,L7302,C7303,C7309, FAIL PAM GAIN & CHECK & REPLACE BPF LOSS U7340,C7361,L7362,FL7360,L7367,C7365,L7368,L736 9,C7366,C7060 CHECK ? FAIL SP4T LOSS CHECK & REPLACE CHECK ? U7050,C7091,C7081 COUPLER & FAIL CHECK & REPLACE CONNECTOR U7,C100B,L101B,J100B CHECK Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 122 CHECK & REPLACE WTR4905 FAIL R3102,C3100,C3103,R3112,C3110,C3113,C3116,C312 Voltage CHECK ? FAIL CHECK & REPLACE PA & BPF L7386,C7384,C7385,C7378,C7318,L7395,C7396,U734 MATCHING 0,C7361,L7362,FL7360,L7367,C7365,L7368,L7369,C7 CHECK ? 366,C7060 SP4T, FAIL COUPLER, CHECK & REPLACE U7050,C7091,C7081,U7,C100B,L101B,J100B RF CON. CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 123 Input match for PA PA with Output match for Switch WTR4905 drive out B41 SAW Output match filter for PA Matching for Antenna Coupler out connector SP4T voltage Matching for SP4T antenna port SP4T Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 124 B41 TRX Circuits (WTR + PA + SAW FILTER + SP4T) Layout Matching for SP4T antenna port SP4T ANT CON on Bottom Input match for PA Output match for PA Output match for WTR4905 drive out WTR4905 Input Matching for LNA of WTR4905 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 125 Diversity Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 126 Diversity Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 127 Tuner Check L173, C174, L172, C173, C171, R135 FAIL SP10T RF CHECK & REPLACE CHECK? C171, C4803, FAIL CHECK & REPLACE Matching C4823, FL4820, C4821, C4822, C4824, C4819, CHECK? L4811, C4812, C4819 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 128 XO Supply Circuit From PMIC8916 WTR4905 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 129 WFR4905 Voltage Supply Circuits Vreg_L4_1P8 WTR4905 Vreg_L1_1P0 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 130 SP10T Just Latam SKU B7 ANT_DIV B7, B40, B41 B1, B2/25,B3,B4,B34,B39 SP10T B5/26, B8,B12/17,B13,B20,B28 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 131 High Bands - B7, B40, B41 NA/EMEA SKU – B7 Sprint SKU – B41 Latam SKU – B7 APAC SKU – B7 and B40 SP10T B7 Latam Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 132 Mid Bands - B1, B2/25, B3, B4, B34, B39 NA/VZW/Sprint SKU – B2/B25, B4 EMEA/APAC SKU – B1, B3 China SKU – B3, Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 133 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 134 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 135 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 136 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 137 Low Bands - B5/26, B8, B12/17, B13, B20, B28 NASKU – B5, B12/17 VZW SKU – B13, BC0, Sprint SKU – B5/26, B12/17 EMEA SKU - B20,B8 APAC SKU – B5, B28,B8 B12/17 ANT_DIV B5/26, BC0/10 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 138 Diversity Circuit Layout Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 139 GSM Quad Band Rx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 140 GSM Radio Check Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 141 CHECK & REPLACE EMEA SKU -FL7155, C7156, C7158 MATCHING The other SKUs – FL7170,L7157,C7154,L7162 CHECK ? Common - L7158,L7160,C7161,L7162 SP10T, CHECK & REPLACE FAIL RF CON. J100, L101,C100, U100,U7000, CHECK ? L7099,C7098,C7000,C7001 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 142 GSM850 Receiver Circuitry EMEA NA/VZW/Sprint/ Latam/APAC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 143 GSM850 Receiver Layout WTR4905 EMEA NA/VZW/Sprint/Latam/APAC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 144 CHECK ? FAIL CHECK & REPLACE NA/VZW/Sprint -FL7175, C7178, C7176 MATCHING EMEA/Latam/APAC – FL7170,C7154,C7175,L7177 CHECK ? Common - L7182,L7180,C7181 SP10T, CHECK & REPLACE FAIL RF CON. J100, L101,C100, U100,U7000, CHECK ? L7099,C7098,C7000,C7001 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 145 GSM900 Receiver Circuitry NA/VZW/Sprint EMEA/Latam/ APAC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 146 GSM900 Receiver Layout WTR4905 NA/VZW/Sprint Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 147 R3102,C3100,C3101,C3103,C3105,R3112, C3113, Voltage C3111,C3110,R3115,C3116,R3120,C3121 CHECK ? FAIL CHECK & REPLACE NA/VZW/Sprint /Latam- FL7000,C7243, C7069 MATCHING EMEA/APAC – FL7200,C7203,C7216,L7205,C7205 CHECK ? Common – U7000,U7030,C7032,C7034,C7033,C7035,L7045,L7044,C7043 SP10T, CHECK & REPLACE FAIL RF CON. J100,L101,C100,U100,U7000,L7099,C7098,C7000,C70 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 148 GSM1800 Receiver Circuitry NA/VZW/Sprint / Latam EMEA/APAC Common Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 149 R3102,C3100,C3101,C3103,C3105,R3112, C3113, Voltage C3111,C3110,R3115,C3116,R3120,C3121 CHECK ? FAIL CHECK & REPLACE NA/VZW/Sprint /Latam/APAC-L7237,C7236,FL7230,C7241,C7206, MATCHING EMEA – C7069,FL7000, C7242, CHECK ? Common – U7000,U7030,C7032,C7034,C7033,C7035,L7045,L7044,C7043 SP10T, FAIL CHECK & REPLACE RF CON. J100,L101,C100,U100,U7000,L7099,C7098,C7000,C7001 CHECK ? Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 150 GSM1900 Receiver Circuitry NA/VZW/Sprint / Latam/APAC EMEA Common Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 151 GSM Quad Band Tx Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 152 Voltage C3111,C3110,R3115,C3116,R3120,C3121 CHECK ? FAIL CHECK & REPLACE GSM LB- C7111,C7113,U7110,C7118, C7136,7135 MATCHING GSM HB– C7121,C7123,U7120,C7128,C7141,C7140 CHECK ? Common – U7100,C7100,C7101,C7102,C7103,C7104,C7105,C7106,C7107, SP10T, CHECK & REPLACE FAIL RF CON. J100,L101,C100,U100,U7000,R100,L7025,C7027,R7000,C7000, CHECK ? C7001,E7000. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 153 GSM Quad Band Tx Circuitry Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 154 GSM Quad Band Tx Circuitry GSM LB Tx GSM HB Tx Common Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 155: Gps Troubleshooting
GPS TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 156 GPS Troubleshoot Flow Chart Start Check Voltage VREG_L18_2P7 and Check replace U2000 Ok GPS Front/ Check and replace Inter-stage FL7660/FL7680 filter check Ok External Check and replace LNA gain U7670 check Ok Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 157 GPS Front End Block Interstage FL7680 GPS front External end SAW LNA U7670 FL7660 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 158: Wlan / Bt / Wifi Troubleshooting
WLAN / BT / WiFi TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 159 Bluetooth/WiFi Power-On Failure WLAN/BT power-on failure Symptoms: WLAN DL test firmware test commands fail Bluetooth power-on test commands fail Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 160 BT/Wi-Fi is turned on through the UI already and the test commands can not turn it on again. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 161 If both BT and WLAN fails, it is highly indicative of a hardware failure. Location of the Bluetooth and WLAN circuit (Shown on the next few pages) Check for any visible damage around the BT/WLAN antenna/IC area. BT/Wi-‐Fi A ntenna S chema5c Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 162 RF & 19.2MHz TCXO Input Schematic C4600 U4600 C4616 C4615 FL4619 L4616 BT/Wi-‐Fi R FIO L4623 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 163 VREG_L5_1P8 U4600 C4700 C4711 VREG_L7_1P8 C4701 C4702 C4714 E4710 C4716 C4715 C4717 C4718 C4704 R4703 C4719 C4720 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 164 Part Placement Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 165 VREG_L9_3P3 C omponents VREG_S3_1P3 C omponents 19.2MHz T CXO C omponents C4702 VREG_L7_1P8 C omponent VREG_L5_1P8 C omponent Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 166 Step 3 for BT/Wi-Fi Power-On Failure If no visible damage can be seen, open up the shield and check for any visible damage on the IC and components. Look for misplaced or damaged components. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 167 –  Typical DC voltages in WCN3620 (U4600) area •  C4711, C4714, E4710, C4715, C4716, C4717, C4718, C4719 and C4720 should be 1.3V •  R4703 and C4704 should be 3.3V •  C4700 and C4701 should be 1.8V Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 168 –  Bluetooth: no probing point – use x-ray or other means to make sure following is soldered properly •  Pins 18, 33 and 28 of U4600 (these are connection points of control, SSBI and data lines) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 169 •  Probe and measure the output power at the antenna contact area or at R060 and see in a spectrum analyzer if you see if the phone is transmitting any power •  Please measure the output power in test mode using the Labview test Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 170 –  BT/Wi-Fi TX/RX RF failure •  Symptoms: –  Wi-Fi Radiated TX test value out of limits –  Bluetooth radiated TX test value out of limits –  Wi-Fi scan test fails –  Bluetooth ping test fails Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 171 Step 1 for BT/Wi-Fi TX/RX RF failure Look for visible damage of the BT/WiFi Antenna, Antenna Contacts and BT/WiFi circuits Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 172 Please refer to the previous slide describing the layout of the WLAN circuit. –  It is recommended to probe the amplitude of the TX signal along the RF path to look for the failure component. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 173: Fm Troubleshooting
FM TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 174 5. (For non-DTV variant) Open up the DTV shield and check whether R6010F placed correctly (For DTV variant) Open up DTV shied and check whether C6015, C6014, L6015, S6010, R6011 placed correctly, and check S6010 voltage 2.85V Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 175 FM: no probing point – use x-ray or other means to make sure following is soldered properly •  Pins 50 of U4600 (FM Rx RF line) •  Pins 41 and 46 of U4600 (these are connection points of SSBI and DATA lines) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 176 FM Frontend (Non-DTV Version) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 177 FM Frontend (DTV Version) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 178 FM Rx Matching FM R x m atching/ WAN ﬁ ltering components Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 179 FM P art P lacement/RouMng Matching components Frontend components Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 180: Dtv Troubleshooting
DTV TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 181 DTV Schematic - 1 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 182 DTV Schematic - 2 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 183 Vreg_L17_2P85: C4765 should be 2.85v •  Vreg_L6_1P8: C4755 should be 1.8v •  DTV_RF_DIG_LDO_IN: C4757 should be 1.8v •  DTV_DIG_LDO_OUT: C4756, E4751 should be 1.1v 7. Check X-ray if any solder issue under U4750 (DTV FC8300W) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 184: Power Up Failure Troubleshooting
POWER UP FAILURE TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 185 K10. You can verify it at a resistor R5031 or a test point below. If this signal does not get lower, likely the button is failing. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 186 4. A power up sequence is started. From regulator Vreg_S4, to Vreg_L5, one by one, the regulator comes up. And then the PMIC clock comes up and feeds to MSM. Check the picture for reference. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 187 TP_MSM_RESIN_N can be used to verify the signal PON_RESET_N. MSM will run the primary boot load SW. 7. MSM responds back by pulling up PS_HOLD, telling PMIC to keep power up. R2001 can be measured to verify this signal. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 188 PMIC is bad and its internal logic is messed up. Replace the PMIC. Here are some pins to measure, REF_BYP at C2001, AVDD_BYP at C2002, and the above signals in the power up steps. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 189 Power Up Failure Troubleshooting Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 190: Charging Troubleshooting
CHARGING TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 191 Charging Troubleshooting •  (Charge Path 1/2): USB Connector M5001-> Charger IC U5201 (pin A5, B5) -> L540 -> Charger IC U5201 (pin D3, E3) USB Connector Charger IC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 192 Charging Troubleshooting •  Charge Path (2/2): -> Charger IC U5201 (pin D3, E3) -> Charger IC U5201 (pin D4, E4) -> R5201 -> Battery Connector P5200 (pin 1) Charger IC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 193 ●  Battery temperature should be between 0ºC ~ 45ºC to be fully charged. Check thermistor voltage at test point (TP_BAT_THERM). It should be around half of battery voltage at room temperature (25ºC). Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 194: Led / Vibrator / Usim / Microsd Troubleshooting
LED / VIBRATOR / USIM / microSD TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 195 SOL LED is driven by U2000 PM8916 CHG_LED_SINK (pin M13) and B_PLUS •  Note: LED is being used only for SOL functionality. Notification LED functionality is not being used and will display the message on the LCD display. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 196 Check voltage at LED Anode (pin 2) and Cathode (pin 1) of D5401A •  LED Anode voltage = B_PLUS (3.2V to 4.3V) and Cathode voltage = ~(B_PLUS – 3.1V LED forward voltage) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 197 When vibrator is active (being driven), the voltage delta between pin 1 and pin 2 of the vibrator should be around 2.4V. When vibrator is not being driven, voltage at pin 1 and pin 2 are about the same. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 198 Rotary Vibrator Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 199 2 SIM connectors on Moto G (3rd Generation) placed on a Daughterboard connected to the main PCB board via 40 pin B2B connector. •  Each SIM connector is operated independently with its own power, detection and SIM bus interface. (at MSM) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 200 Daughter Board SIM Connector Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 201 Check SIM bus interface signal activities during SIM access (UIMx_RST, UIMx_CLK, UIMx_DATA). During normal operation after power up, the clock runs at 3.85 MHz, reset is high, and the SIM bus operates at 1.8V or 3V. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 202 •  Moto G (3rd Generation) supports one microSD connector placed on a Daughter board connected to the main PCB board via a 40-pin B2B connector © 2010 Motorola Mobility, Inc. - Internal Confidential 2/2/2015 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL...
Page 203 Daughter Board microSD Connector Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 204 Main board - Power supply and Card Detect (from daughter board) (to MSM) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 205 Check microSD card detection signal at J5800 pin 10 or VR5801 (active LOW when microSD card is inserted). •  Check for activity on microSD bus interface signals during microSD access (SDC2_CLK, SDC2_CMD, SDC2_D[3:0]). Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 206: Sensors Troubleshooting
SENSORS TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 207 IR proximity or ambient light sensor issue at phone level: •  Inspect the zip connector on main PCB board •  Check physical connection of zip connector and flex •  Rework zip connect or replacing the flex as needed Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 208 Proximity/ALS Sensor Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 209 Proximity/ALS Sensor Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 210 G-force reading of ~ 9.8 next to “Total Acceleration”. If no data is shown, then the IC may be faulty. •  Check the interrupt line, which is buried: ACCEL_INT / ACCEL_INT_2 •  Make sure the sensor hub (U6000) is working correctly: see the “Sensor Hub” section Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 211 Accelerometer Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 212 If no data is shown or the data isn’t changing values, then the IC may be faulty. •  Check the reset and interrupt lines, which are buried: MAG_RESET_N and COMPASS_INT Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 213 Magnetometer Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 214 PCB. When this is done, the display will turn off. The display will turn back on once the magnet is moved far enough away. •  Make sure the sensor hub (U6000) is working correctly: see the “Sensor Hub” section Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 215 Hall Effect Sensor Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 216 Check the active-LOW reset line (STM_NRST): should be high for normal operation •  Check the 32 KHz clock (CLK_XMCS) at U6000 pin A6 (buried line) •  Use x-ray to check for shorts under the sensor hub IC Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 217 Sensor Hub Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 218: Touch Troubleshooting
TOUCH TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 219 On-Cell (similar to DVX or Styx) •  Synaptics S2316 •  13 TXs * 28 RXs –  TDI (Taiwan Display Inc.) •  In-Cell (similar to Lux/Lynx) •  Synaptics S3346 •  27 TXs * 15 RXs Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 220 Panel is facing user. FPC bonding area is next to speaker port at top of phone. In this image it is toward bottom. Touch flex connects to the main flex via an 9- pin ZIF connector Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 221 VIO should be 1.8V from RST_N from MSM VREG_L6_1P8 GPIO INT_N = 1.8V State change VDDA should be 3.3V powered by PMIC interrupt. Low when VREG_L16_UIM3 regulator touch event occurs through U5330. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 222 Product ID: s3346b Build ID: 1b5aff Config ID: 27011520 –  Where Product ID: s3346 = TDI, Product ID:s2726 = INX or BOE 5)  If above tests pass, check for a panel crack Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 223: Display Troubleshooting
DISPLAY TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 224 Display Circuit Location Components for Display and Backlight Display and Touch Connector Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 225 Display Signal Check Green components placed, Red components NOT placed Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 226 Backlight Driver Signal Check Green components placed, Red components NOT placed Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 227 CABC Signal as seen on an oscilloscope Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 228 MIPI signal as seen on an oscilloscope (zoomed out) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 229 MIPI signal as seen on an oscilloscope (zoomed in) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 230: Camera Troubleshooting
CAMERA TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 231 Camera Troubleshooting Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 232 (MIPI). I2C is used for control. ▪  Analog Supply regulator (2.8V) located on Main PCB. ▪  Digital Supply regulator (1.05V) located on Main PCB. ▪  Full 1080P video mode ▪  Zero Shutter Lag Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 233 Main Imager 1 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 234 Main Imager (cont.) 1 Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 235 Main Imager Pinout (Looking through PCB) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 236 - Check MIPI data/clk exist on all lines After imager APP is launched. - Check reset is high (1.8V) - Check I2C clk/sda activity is present. - Check Main reference clk = 23.8Mhz Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 237 The Module is capable of auto exposure, white balance, color correction, and color conversion. ▪  This device provides a finished image at up to 30 fps. ▪  Analog Supply regulator (2.8V) located on main transceiver PCB. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 238 Front Facing VGA Imager Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 239 Front Facing VGA Imager (cont.) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 240 Front Facing VGA Imager Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 241 - Check MIPI data/clk exist on all lines After imager APP is launched. - Check reset is high (1.8V) - Check I2C clk/sda activity is present - Check Main reference clk = 23.8MHz Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 242 Flash LED uses two LEDs that are placed on the Flash PCB, see next slide for a picture ▪  The flash LED drive resides on the main board, see next slide for a picture Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 243 Flash LED uses two LEDs that are placed on the Flash PCB as shown below LEDs Daughter Card Flash PCB Rear housing Spring Touching Flash PCB Flash PCB Top Side Flash PCB Top Side Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 244 Flash LED and Flash LED Drive ▪  Flash LED PCB make contacts through four spring contacts that are on the daughter card as shown below Flash_White_POS FLAS_GND EEPROM_DATA Flash_Amber_POS Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 245 ▪  Flash LED Drive resides on the main PCB and the output of the driver goes to the daughter board then through the spring contacts to the FLASH PCB as shown below Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 246 2.8V and during strobe around 3.6V 3)  Check I2C interface of the Flash LED drive (I2C_SDA_cAM and I2C_SCL_CAM) 4)  Ensure that the Flash PCB is making contacts with the daughter card Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 247: Audio Troubleshooting
AUDIO TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 248 Second M ic Headset j ack Loudspeaker Speaker Secondary M ic Primary M ic Front of the phone Back of the phone Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 249 •  N oise suppression for voice calls •  M ultimedia audio recording Functional Name: Main Microphone Uses: •  S peech in handset and speakerphone modes Primary M ic Back of the phone Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 250 “AUDIO” menu of the CQA apk, select “Ear Speaker” and then “Play Harvard speech pattern”. •  The loudspeaker can be tested by selecting “Loudspeaker via the CQA apk. Music should start playing. •  Loudspeaker functionality can be checked quickly by playing a ringtone. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 251 Primary Microphone Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 252 Check the microphone assembly to make certain it is not damaged, which may indicate a broken diaphragm. Check the microphone output at C5700 or C5701. The AC amplitude should increase when audio is present. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 253 Secondary Microphone Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 254 Check the microphone assembly to make certain it is not damaged, which may indicate a broken diaphragm. Check the microphone output at C5751 or C5750. The AC amplitude should increase when audio is present. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 255 4.) Block the primary mic port, listen audio in earpiece. If primary mic is sealed, there will be no /very low audio in Handset earpiece. If primary mic seal is broken, block and unblock audio level almost same. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 256 4.) Block the second mic with tape, listen earpiece audio. If second mic is sealed, there will be no/very low audio in Handset earpiece. If second mic seal is broken, block and unblock audio level almost same. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 257 Earpiece Earpiece circuit in the daughter board. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 258 There are shunt components to ground that can be checked (C5786, C5787, and VR5784,VR5785). •  The earpiece speaker has a nominal impedance of about 32Ω. •  This is a linear amplifier output, where playing a tone would produce a clean AC output voltage. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 259 Loudspeaker Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 260 The loudspeaker can be probed at L5780 and L5781 •  The impedance of the loudspeaker should be around 8Ω when probing on the component •  The output is a class D waveform (sample wave shown below) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 261 3.5mm Headset Jack Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 262 3.5mm Headset Jack Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 263 3.5mm Headset Jack Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 264: Headset Jack Troubleshooting
HEADSET JACK TROUBLESHOOTING Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 265 Measure voltage at Sleeve_Jack ,voltage should be around 2.3 volt. •  When headset is Inserted: Measure voltage at Sleeve_jack, voltage should be around 1.07 volt ~2.4volt(depending on mic impedance of the headset used) Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...
Page 266 Measure voltage across Ref Des R4931(HS_ADC): When no headset inserted: Voltage across R4931 should be 1.63 volt When headset inserted: Voltage across R4931 should be 0.73volt~1.63 volt depending on the headset mic impedance. Moto G (3rd Generation) MOTOROLA CONFIDENTIAL TROUBLESHOOTING GUIDE...

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