DVX LTE - Troubleshooting Guide (1).pptx

Subhead (Arial, U/L, 36pt)DVX LTETROUBLESHOOTING GUIDES 2009 Motorola Proprietary & ConfidentialDVX LTE EE TEAMApril 15, 2014 Table of ContentsSnapshots of Antennas and Main Boards3GSM6WCDMA20LTE37CDMA54GPS63WLAN / BT / FM66Charging84Prox & IR Sensor90uSIM94Vibrator and sensors97microSD103Touch109Display113Camera and Flash LED121Audio137

Main AntennaQuad-band GSM UMTS Bands 1, 2, 4, 5, 8LTE Bands 2, 3, 4, 5, 8LTE AntennaLTE Band 7, 12, 17, 20Diversity AntennaUMTS Bands 1, 2, 4, 5, 8LTE Bands 2, 4, 5, 17Bluetooth/WifiAntennaGPS AntennaAntennasSnapshots of Main PCB

Top Side(Battery side)Bottom Side(Display side)

EMEA version shown. Please check BOM for different variantsGeneral Radio Check

GSM Quad Band RXPlease also refer to DVX LTE RF Flow DiagramsSTARTENDDPX MATCHING CHECK ?CHECK & REPLACE R3100,R3101, C3100, C3101, R3104, C3104, C3105, C3102, C3106, C3108,C3109,C3110, C3111, R3114, C3112, C3113, C3114, C3115, C3116, C3117, C3118, C3119, C3120, C3121, C3122.

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4501, L4508, C4576, C4513, L4509, L4510, C4539.

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE S4500, R4599, R4500, C4506A, E4500, C4506B, C100, L101, J100.

WTR2605 Voltage CHECK ?

CHECK & REPLACE C3004GSM850 Receiver UMTS Global & AWS Check ChartGSM850 Receiver Circuitry-UMTS Global

STARTENDDPX MATCHING CHECK ?CHECK & REPLACE R3100,R3101, C3100, C3101, R3104, C3104, C3105, C3102, C3106, C3108,C3109,C3110, C3111, R3114, C3112, C3113, C3114, C3115, C3116, C3117, C3118, C3119, C3120, C3121, C3122.

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4502,C4511,L4512,C4575, C4541, L4514.

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE S4500, R4599, R4500, C4506A, E4500, C4506B, C100, L101, J100.


CHECK & REPLACE C3004GSM900 Receiver UMTS Global Check ChartGSM900 Receiver Circuitry-UMTS Global

STARTENDSAW MATCHING CHECK ?CHECK & REPLACE R3100,C3100,C3102,C3103,C3104,C3105,C3106,C3107,R3110,C3110,R3120,C3120,C3122,C3123,C3124,C3125,C3126,C3127,R3128

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4809, L4566, C4566, L4569, L4562, C4567, L4563, L4564

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE U4000,C4016,C4000,C4004,C100,L101,J100


CHECK & REPLACE R3000, C3004GSM1800 Receiver UMTS Global & AWS Check ChartGSM1800 Receiver Circuitry-UMTS Global

STARTENDSAW MATCHING CHECK ?CHECK & REPLACE R3100,C3100,C3102,C3103,C3104,C3105,C3106,C3107,R3110,C3110,R3120,C3120,C3122,C3123,C3124,C3125,C3126,C3127,R3128

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4809, L4565, C4565, L4569, L4562, C4567, L4563, L4564

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE U4000,C4016,C4000,C4004,C100,L101,J100


CHECK & REPLACE R3000, C3004GSM1900 Receiver UMTS Global & AWS Check ChartGSM1900 Receiver Circuitry-UMTS Global

GSM Quad Band TxPlease also refer to DVX LTE RF Flow DiagramsGSM Quad Band Tx Check Chart No Tx

QRCT GSM Power Transmit



WCDMAPlease also refer to DVX LTE RF Flow DiagramsWCDMA B1 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DPLX & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114

FAILOKOKFAILOKFAILOKFAILCHECK & REPLACE C4524,C4525,C4530,C4531CHECK & REPLACE FL4500, C4514,L4504,S4500OK


RF CONNECTOR CHECK ?CHECK & REPLACER4599,C100,L101,J100FAILGo to TX CHECK CHART- Low TXPA Input & Output MatchCHECK?OKFAILCHECK & REPLACE C4537,C4521, L4535, C4555, U4502WTR1625 TX LevelCHECK ?END2PA GAIN & DPLX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4555, C4521, L4535, U3000CHECK & REPLACE C4537,C4521, L4535, C4555, U4502, FL4500CHECK & REPLACE R4599,S4500WCDMA B1 TX Check Chart Low TXCHECK & REPLACE C100,L101,J100STARTENDDPLX & MATCH CHECK ?OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4500, C4544, S4501, C4546, L4505, L4560

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE S4500 ,R4599,C100,L101,J100


CHECK & REPLACE R2000, C2000, Y2000,U2000,C3500,C3003,C2007,C3004WCDMA B1 RX Check ChartCHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114

WCDMA B2 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DPLX & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114FAILOKOKFAILOKFAILOKFAILCHECK & REPLACE C4524,C4525,C4530,C4531CHECK & REPLACE FL4506, C4509,L4520,S4500OK


RF CONNECTOR CHECK ?CHECK & REPLACER4599,C100,L101,J100FAILGo to TX CHECK CHART- Low TXOKFAILPA Input & Output MatchCHECK?CHECK & REPLACE C4532,C4521, L4535, C4555, U4502WTR1625 TX LevelCHECK ?END2PA GAIN & DPLX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4555, C4521, L4535, U3000CHECK & REPLACE R4599,S4500WCDMA B2 TX Check Chart Low TXCHECK & REPLACE C4532, U4502,FL4506CHECK & REPLACE C100,L101,J100STARTENDDPLX & MATCHING CHECK ?OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4506,C4564, L4521, L4522

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?


WCDMA B2 RX Check ChartCHECK & REPLACE R2000, C2000, Y2000,U2000,C3500,C3003,C2007,C3004CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114

CHECK & REPLACE S4500 ,R4599,C100,L101,J100STARTENDTX VOLTAGE CHECK?DPLX & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114CHECK & REPLACE C4524,C4525,C4530,C4531WTR1625Voltage CHECK ?

RF CONNECTOR CHECK ?CHECK & REPLACER4599,C100,L101,J100Go to TX CHECK CHART- Low TXCHECK & REPLACE C4522 , L4541 , C4561 ,C4534, C4572, L4548, U4502WCDMA B4 TX Check Chart No TXFAILFAILFAILFAILFAILFAILOKOKOKOKOKOKCHECK & REPLACE FL4503, C4510,L4516,S4500PA Input & Output MatchCHECK?WTR1625 TX LevelCHECK ?END2PA GAIN & DPLX LOSS CHECK ?FAILFAILFAILRF CONNECTORCHECK FAILSP10T LOSS CHECK ?CHECK & REPLACE C4522, C4561, L4541, U3000CHECK & REPLACE R4599,S4500WCDMA B4 TX Check Chart Low TXOKOKOKOKOKCHECK & REPLACE C100,L101,J100CHECK & REPLACE C4534,C4572, L4548, U4502,FL4503STARTENDDPLX & MATCHING CHECK ?OKFAILOKFAILOKFAILFAILOKCHECK & REPLACE FL4503,R4551, C4543, S4501, L4505, L4560, C4546

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?WTR1625 Voltage CHECK ?


CHECK & REPLACE S4500 ,R4599,C100,L101,J100WCDMA B5 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DPLX & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114FAILOKOKFAILOKFAILOKFAILCHECK & REPLACE C4524,C4525,C4530,C4531OK

WTR1625Voltage CHECK ?

RF CONNECTOR CHECK ?CHECK & REPLACER4599,C100,L101,J100FAILGo to TX CHECK CHART- Low TXOKFAILCHECK & REPLACE C4516, L4539 , FL4507 , C4519 ,C4535, L4550, U4502CHECK & REPLACE FL4501, C4513,L4508,C4576,S4500PA Input & Output MatchCHECK?WTR1625 TX LevelCHECK ?END2PA GAIN & DPLX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK CHECK & REPLACE C100,L101,J100FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4516,L4539, U3000CHECK & REPLACE C4535, L4550, U4502,FL4501CHECK & REPLACE R4599,S4500WCDMA B5 TX Check Chart Low TXSTARTENDDPLX & MATCHING CHECK ?OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4501, L4510, C4539, L4509

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?



CHECK & REPLACE S4500 ,R4599,C100,L101,J100WCDMA B8 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DPLX & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114FAILOKOKFAILOKFAILOKFAILCHECK & REPLACE C4524,C4525,C4530,C4531OKWTR1625 Voltage CHECK ?

RF CONNECTOR CHECK ?CHECK & REPLACER4599,C100,L101,J100FAILGo to TX CHECK CHART- Low TXOKFAILCHECK & REPLACE FL4502, C4511,L4512,S4500PA Input & Output MatchCHECK?CHECK & REPLACE C4516, L4539 , FL4507 , C4519 ,C4536, L4552, U4502WTR1625 TX LevelCHECK ?END2PA GAIN & DPLX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK CHECK & REPLACE C100,L101,J100FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4516,L4539, U3000CHECK & REPLACE C4536, L4552, U4502,FL4502CHECK & REPLACE R4599,S4500WCDMA B8 TX Check Chart Low TXSTARTENDDPLX & MATCHING CHECK ?OKFAILOKFAILOKFAILOKFAILOKXO FrequencyCHECK ?

SP10T,RF CON. CHECK ?WTR1625 Voltage CHECK ?

WCDMA B8 RX Check ChartCHECK & REPLACE R2000, C2000, Y2000,U2000,C3500,C3003,C2007,C3004CHECK & REPLACE FL4502,C4575,C4541,L4514CHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114

CHECK & REPLACE S4500 ,R4599,C100,L101,J100STARTENDWTR1625L Signal CHECK?OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE U3000, L4843, L4842, L4840, L4839, L4827, C4827, L4828, C4821, C4837, L4821

XO FrequencyCHECK ?

Rx SAW & Match CHECK?CHECK & REPLACE FL4822, C4841 , L4841 ,FL4820, C4838 , L4838 ,FL4817, C4826 , L4826 ,FL4815, C4820, L4820


Diversity RX Check Chart For WCDMA B1, B2, B4, B5, B8SP12T CHECK?CHECK & REPLACE S4800,R4805, C45800A,C4800BFAILCHECK & REPLACE R3100,R3101,R3102,R3103,R3104,R3105,R3106,R3107,R3108,R3109,R3110,R3111,R3112,R3113,R3114CHECK & REPLACE R2000, C2000, Y2000,U2000,C3500,C3003,C2007,C3004RF connector CHECK?CHECK & REPLACE C170,J170FAILLTEPlease also refer to DVX LTE RF Flow DiagramsLTE B17 RX Check Chart

LTE B17 DRX Check Chart

LTE B17 TX Check Chart No TX

LTE B17 TX Check ChartLow TX

LTE B7 RX Check Chart


LTE B7 TX Check ChartNo Power

LTE B7 TX Check ChartLow Power




LTE B20 TX Check ChartLow Power




LTE B3 TX Check ChartLow PowerCDMAPlease also refer to DVX LTE RF Flow DiagramsCDMA BLOCK DIAGRAM

CDMA BC1 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DUPLEXER & SP10TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACE R3600,R3601,R3602,R3603,R4604,R3605,R3606,R3607,R3608,R3609,R3610,R3611,R3612,R3613,R3614,C3600,C3601,C3602,C3603,C3604,C3605,C3606,C3607,C3608,C3609,C3610,C3611,C3612,C3613,C3614,C3615,C3616,C3617,C3618,C3619,C3620,C3621,C3622,C3623,C3624,C3625,C3626

FAILOKOKFAILOKFAILOKFAILCHECK & REPLACE C4524,C4525,C4530,C4531

CHECK & REPLACE FL4506,L4519,L4520,C4509,S4500,R4500,E4500

OK


RF CONNECTOR CHECK ?CHECK & REPLACEC100,L101,R4599,R4550,R4544FAILGo to TX CHECK CHART- Low TXPA MODE & MATCHCHECK?OKFAILCHECK & REPLACE C4540,C4547,C4548,C4549,C4554,C4562L4545,L4546,C4532,C4521,C4555,L4535,U4502

WTR1625 TX LevelCHECK ?END2PAM GAIN & DPX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK CHECK & REPLACE C100,L101,J100FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4521,C4555,L4535PDM = 76 (set same PDM count and compare Tx power level with a good unit)CHECK & REPLACE C4521,C4555,L4535,U4502,C4532,L4545,L4546C4509,L4519,L4520PAM Gain = 26~30 dB in high gain modeDPX Loss = 2.1~3.0 dBCHECK & REPLACE S4500,R4599

CDMA BC1 TX Check Chart Low TXSTARTENDDPX & MATCHING CHECK ?CHECK & REPLACE R3600,R3601,R3602,R3603,R4604,R3605,R3606,R3607,R3608,R3609,R3610,R3611,R3612,R3613,R3614,C3600,C3601,C3602,C3603,C3604,C3605,C3606,C3607,C3608,C3609,C3610,C3611,C3612,C3613,C3614,C3615,C3616,C3617,C3618,C3619,C3620,C3621,C3622,C3623,C3624,C3625,C3626

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4506,L4521,L4522,C4564

XO FrequencyCHECK ?

SP10T,RF CON. CHECK ?CHECK & REPLACE S4500,R4500,E4500,C4506A,C4506B,C100,L101,J100


CHECK & REPLACE C3500,C3501XO Freq = 19.2 MHzCDMA BC1 RX Check ChartCDMA BC0 TX Check Chart No TXSTARTENDTX VOLTAGE CHECK?DUPLEXER & SP8TCHECK ?TX LEVEL CHECK ?2CHECK & REPLACER3600,R3601,R3602,R3603,R4604,R3605,R3606,R3607,R3608,R3609,R3610,R3611,R3612,R3613,R3614,C3600,C3601,C3602,C3603,C3604,C3605,C3606,C3607,C3608,C3609,C3610,C3611,C3612,C3613,C3614,C3615,C3616,C3617,C3618,C3619,C3620,C3621,C3622,C3623,C3624,C3625,C3626

FAILOKOKFAILOKFAILOKFAILCHECK & REPLACEC4524,C4525,C4530,C4531

CHECK & REPLACE R4500,E4500,C4506A,C4506B,S4500,C4513, C4576,L4508,L4509,L4510,C4539,FL4501

OK


RF CONNECTOR CHECK ?CHECK & REPLACEC100,L101,J100,R4599FAILGo to TX CHECK CHART- Low TXPA MODE & MATCHCHECK?OKFAILCHECK & REPLACE C4540,C4547,C4548,C4549,C4554,C4562, C4513,L4536,L4537,C4535,L4549,L4550FL4507,C4516,L4539

WTR1625 TX LevelCHECK ?END2PAM GAIN & DPX LOSS CHECK ?OKFAILOKFAILOKFAILOKRF CONNECTORCHECK CHECK & REPLACE C100,L101,J100FAILOKSP10T LOSS CHECK ?CHECK & REPLACE C4516,L4539,FL4507,L4537PDM = 77 (set same PDM count and compare Tx power level with a good unit)CHECK & REPLACE L4549,L4550,C4535,L4532,L4537,C4519,FL4507,L4539,C4516PAM Gain = 25~29 dB in high gain modeDPX Loss = 2~4 dBCHECK & REPLACE L4508,C4576,C4513,R4599CDMA BC0 TX Check Chart Low TXSTARTENDDPX & MATCHING CHECK ?CHECK & REPLACER3600,R3601,R3602,R3603,R4604,R3605,R3606,R3607,R3608,R3609,R3610,R3611,R3612,R3613,R3614,C3600,C3601,C3602,C3603,C3604,C3605,C3606,C3607,C3608,C3609,C3610,C3611,C3612,C3613,C3614,C3615,C3616,C3617,C3618,C3619,C3620,C3621,C3622,C3623,C3624,C3625,C3626

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACE FL4501,L4510,L4509,C4539

XO FrequencyCHECK ?

SP8T,RF CON. CHECK ?CHECK & REPLACE S4500, R4500,,E4500,C4506A,C4506B,C100,L101,J100,R4599


CHECK & REPLACE C3500,C3501XO Freq = 19.2 MHzCDMA BC0 RX Check ChartSTARTENDAntenna Con. CheckCHECK & REPLACE R3600,R3601,R3602,R3603,R4604,R3605,R3606,R3607,R3608,R3609,R3610,R3611,R3612,R3613,R3614,C3600,C3601,C3602,C3603,C3604,C3605,C3606,C3607,C3608,C3609,C3610,C3611,C3612,C3613,C3614,C3615,C3616,C3617,C3618,C3619,C3620,C3621,C3622,C3623,C3624,C3625,C3626

OKFAILOKFAILOKFAILOKFAILOKCHECK & REPLACEC170,R125,J170,C171,C172,C173,L170,L172,L183,C183,C184,C184,C183,L181,C181,D180,R183,L180,C180,R181,R182,R180,Q180

XO FrequencyCHECK ?

SP12T RF CON. CHECK?CHECK & REPLACE R4805,C45800A,C45800B,E4800,S4800


CHECK & REPLACE C3500,C3501XO Freq = 19.2 MHzDiversity RX SV Check Chart For CDMA BC0, BC1Matching CON. CHECK?CHECK & REPLACE BC0:C7101,L7102,L7103,L7105,C7104,FL7100

BC1:C7121,L7122, L7123,L7124,C7125,FL7120FAILGPSGPS Troubleshoot Flow ChartGPS Voltage CheckExternal LNA gain check (17.8 dB)GPS Front/Inter-stage filter checkStartEndCheck VREG_L14_RF and replace U2000

Check and replace FL8500

Check and replace U8500

OkOkOk

GPS External LNA U8500GPS front end SAW FL8500GPS Front End BlockWLAN / BT / FMBluetooth/WiFi power-on failure

WLAN/BT power-on failure Symptoms: WLAN DL test firmware test commands fail Bluetooth power-on test commands failStep 1 for BT/Wi-Fi power-on failure

Check if the other functionality fails as well, e.g. check WLAN power on if Bluetooth can not be powered on. Check Bluetooth power on if WLAN can not be powered on.

Both WLAN and Bluetooth share the same IC and most of the circuit, so if one of the BT/Wi-Fi fails, the other should fail as well. If only one of them fails, it is highly likely that it is not a hardware problem and it could just that the BT/Wi-Fi is turned on through the UI already and the test commands can not turn it on again.Step 2 for BT/Wi-Fi power-on failureIf 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 Antenna Schematic

RF & 19.2MHz TCXO input Schematic

4600BT/ WIFI RFIO U4600FL4619L4600L4602C4602L4601C4616C4615L4623L4616L4621L4622Power supply Schematic

C4704Part placement

WLAN / BT Antenna Part placement

Part placement

BT/ WiFi RF ComponentsVREG_L16_3P0 Components VREG_L24_1P3 Components19.2MHz TCXO ComponentsVREG_1P2 Component

VREG_L10_1P8 ComponentVREG_L6_1P8 Component

FM RF componentsStep 3 for BT/Wi-Fi power-on failureIf 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.

Debugging BT / WLAN Power-up FailureCheck clock supplies19.2MHz Clock: NET TCXO_IN check at component C4600

Check DC Voltages:Typical DC voltages in WCN3620 (U4600)areaR4710, C4710,C4711, C4712, C4714, E4710, C4717, C4718, C4719 and C4720 should be 1.3VC4703 and C4704 should be 3.3VC4700 and C4701 should be 1.8V

Debugging BT / WLAN Power-up FailureCheck connections WCN3620 and MSM8226:WLAN: no probing point use x-ray or other means to make sure following is soldered properlyPins 54, 59, 47 and 53 of U4600 (these are connection points of IQ lines)Pins 55, 26, and 48 of U4600(these are connection points of DATA lines)

Bluetooth: no probing point use x-ray or other means to make sure following is soldered properlyPins 18, 33 and 28 of U4600 (these are connection points of control, SSBI and data lines)

Debugging BT/WLAN low TX powerProbe 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 powerPlease measure the output power in test mode using the Labview test SW and procedures described in the following link

Wi-Fi https://drive.google.com/a/motorola.com/?tab=mo#folders/0B_CJcTa8m_DpaHptN1NGcFF2UlUBT https://drive.google.com/a/motorola.com/?tab=mo#folders/0B_CJcTa8m_DpUXdnNXhIYTRoUjQ

Bluetooth/WiFi TX/RX RF failureBT/Wi-Fi TX/RX RF failureSymptoms:Wi-Fi Radiated TX test value out of limitsBluetooth radiated TX test value out of limitsWi-Fi scan test failsBluetooth ping test fails

Step 1 for BT/Wi-Fi TX/RX RF failureLook for visible damage of the BT/WiFi Antenna, Antenna Contacts and BT/WiFi circuits

Step 2 for BT/Wi-Fi TX/RX RF failureIf there is no visible sign of antenna damage and antenna contacts damage, its most likely something wrong in the BT/Wi-Fi chips or circuits. Open up the shield and look for misplaced or damaged RF front-end components. 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.

If FM RSSI is out of limits Check whether the headset connection between the phone and the FM signal generator are correctly doneCheck and make sure that the headset jack is not damagedThen check for any visible damage around the FM antenna/Antenna matching componentsThen open up the Wi-Fi/BT shield and check whether the FM Rx matching components placed correctly/damagedThen Check connections between WCN3620 and MSM8226:FM: no probing point use x-ray or other means to make sure following is soldered properlyPins 50 of U4600 (FM Rx RF line)Pins 41 and 46 of U4600(these are connection points of SSBI and DATA lines)

Debugging FM RSSI failure ChargingCHARGING TROUBLESHOOTINGCharge path: USB connector J5200 -> U2000 (pin 161, 172) -> U2000 (pin 162) -> U2000 (pin 143,155) -> U2000 (pin 154,166) -> L2110 -> U2000 (pin 152, 164) -> U2000 (pin 139, 151, 163) -> R2100 -> J5200 (pin 4)CHARGING TROUBLESHOOTINGCHARGING TROUBLESHOOTINGCHARGING TROUBLESHOOTINGCHARGING TROUBLESHOOTINGIn the event of charging issues, check charging voltages along the charging path:Measure USB_PWR charger input voltage at D5001 pin1. The voltage should be between 4.3 - 5VMeasure VCHG voltage at C2116. The voltage should be lower the USB_PWRCheck battery voltage at J5200 pin4. It should be 4.35V or lower. If battery is 2.1 or 0, there maybe a short in the circuit somewhere. The battery fault safe circuit is triggered.Check battery ID voltageCheck thermistor voltageProx & IR Sensor

IR Proximity Sensor Ambient Light SensorIR proximity sensor and ambient light sensor are built into U9720MSM8226 U1000 uses I2C bus to communicate to U9720

In the event of IR proximity or ambient light sensor issue at board level:Check for input power VREG_L19_2P85 at U9720 pin 1 (or C9721) Check I2C bus activities during IR proximity/ambient light sensor access (I2C_SCL_SENS, I2C_SDA_SENS)Check B_PLUS voltage at IR LED Anode (D9720 pin 1)Check voltage at IR LED Cathode (D9720 pin 2) during IR proximity detection is enable. There should be ~1V drop when D9720 is turned on (see scope shot below)

In the event of IR proximity or ambient light sensor issue at phone level: Check for missing/missed alignment of IR rubber seal (see picture below)Missing/missed alignment of IR rubber seal can cause IR saturation and/or ambient wrong reading

IR Proximity Sensor Ambient Light Sensor

Rubber SealuSIMSIMDVX LTE only has one SIM connector. DVX had two connectors, but DVX LTE removed one SIM to make room for a microSD connector.The SIM interface includes a SIM card detection function.

In the event of a SIM issue:Do a through visual check on the SIM connector (J5520) for any sign of mechanical contact issues, including foreign material (FM) on any contact pinCheck SIM power (VREG_L22, either at 1.8V or 2.95V) at J5520 pin C7Check VREG_L6_1P8 voltage for 1.8V (probe on R5522) Check for SIM card detection signal (UIM1_DET) at J5520 pin DS (active HIGH: ~1.8V when SIM card is inserted, ~ 0V when card removed)Soon after the phone turns on, check the SIM bus interface signal activity during the initial SIM access (UIM1_RST, UIM1_CLK, UIM1_DATA)SIMVibrator and sensors

Sensor Accelerometer / GyroscopeCheck that 1.8V and 2.85V supply voltages are correct. Check that R1200 and R1201 are placed (these are pullups for the sensors I2C interface). Check that both the I2C signals (at R1200 and R1201) and the interrupt signals (at R9754 and R9757) above are operating when the sensor is in operation mode by moving and rotating the phone.2.85V Supply1.8V SupplyInterrupt Signal - AccelerometerI2C Data SignalInterrupt Signal - GyroscopeI2C CLK SignalSensor Accelerometer / GyroscopeCan also use the CQATest app to see accel and gyro data changing over time:dial *#*#2486#*#* to open the appGo into Menu Mode -> Sensor -> Accelerometer (or Gyroscope)

R1200 & R1201: probe I2Cs CLK and DAT signals at these 1.8V pullups

Sensor Magnetometer

No operation: Check if the sensor is broken. It is fragile (see images at right).Check if 1.8V and 2.85V supply voltages are correct. Check that R1200 and R1201 are placed (see image below). At R1200 and R1201, check that the I2C signals are operating when the sensor is in operation mode by moving and rotating the phone.Note: reset & interrupt lines are buried and unreachable.Magnetometers Cracks2.85V Supply1.8V SupplyInterrupt SignalI2C Signals: CLK, DATAReset SignalSensor MagnetometerCan also use the CQATest app to see data changing over time by 1) dialing *#*#2486#*#* to open the app, and 2) going into Menu Mode -> Sensor -> MagnetometerHeading error: Make sure to calibrate compass applications before using them by moving the phone in a figure 8 pattern. Make sure not to have any magnetic objects (including accessories) around the phone. Note that calibration inside buildings can sometimes be problematic if there are steel structures.

R1200 & R1201: probe I2Cs CLK and DAT signals at these 1.8V pullupsSensor Hall Effect Sensor

No operation: Check VREG_LVS1_1P8 for 1.8V at C9774/C9775. Check if HE2_SOUTH (at C9776) goes low when the smart cover is closed (and back to high 1.8V when the cover is opened). For faulty operation when cover is flipped around: Check if the magnetic shields are there and not damaged. Hall Effect sensor for dock is NOT USED. Hall Effect sensor IS USED for smart cover.Two magnetic shields are used to block magnetic flux when the Smart cover is flipped around.

Magnetic Shield on boardMagnetic Shield on Smart CoverSMART COVER DETECTDOCK DETECT (NOT USED)microSDPCB LayoutmicroSD

SD connectorSDshield

MSM8926Card detection check:Do a through visual check on the microSD connector (J5800) for any sign of mechanical contact issues, including foreign material (FM) on any contact pin.Make sure R5800, R5801, C5820 are placed.Check VREG_L6_1P8 for 1.8V (probe at R5800). If card is removed, check SD_CARD_DET_N for 1.8V. Is card is inserted, check that SD_CARD_DET_N is Low (probe at C5820/R5800/R5801).microSD

R5800/R5801/C5820

microSD 2010 Motorola Mobility, Inc. - Internal ConfidentialVoltage checks: Check that SDCARD_VDD / VREG_L18_2P95 is at 2.95V (probe at J5800 pin 4 or C5800). Check that SDCARD_VDDIO / VREG_L21_2P75 is either at 1.8V or 3V (probe at R5818 OR at the pullup resistors R5805/ R5806/ R5807/ R5808/ R5810).

Probe for SDCARD_VDDIO (R5818)Probe for SDCARD_VDD (C5800)

R5818pullups

microSDCheck the CLK, CMD, and DATA(3:0) signals:Make sure FL5800W is soldered and placed properly.Make sure the six CLK, CMD, DATA beads are properly placed and soldered: R5809, R5813, R5814, R5815, R5916, R5817.Check FL5800WCheck beads

SDshieldFL5800W6 beads

microSD 2010 Motorola Mobility, Inc. - Internal ConfidentialCheck the CLK, CMD, and DATA(3:0) lines (contd):Check that R1007 is placed (near MSM).Check that the SD card is mounted: On the phone, go to Settings->Storage->SD Card to confirm the card size and that its mountedIf needed, initiate transfers to/from card and probe CLK, CMD, DAT(3:0) for bus activity.

Check R1007R1007MSM8926TouchSynaptics single layer touch (Touch-On-Display)There are 12 X channels (Tx) and 26 Y channels (Rx)

Touch flex connects to the main flex via an 9-pin ZIF connector41-pin main ZIF connectorSchematic on display connector

AVDD should be 3.1VVDD should be 1.8VTSP_RESET_N from MSM GPIOTSP_INT_N = 1.8V State change interrupt. Low when touch event occursI2C lines (SCL, SDA) should be pulled up to 1.8VTroubleshootingNo touch: Check power supply voltages;ADDD (pin 39) = 3.1VVDD (pin 31) = 1.8VCheck touch connector and flexes on display flex

DisplayDisplayThis display is a color Active Matrix Liquid Crystal Display (AMLCD) of glass construction with White pixels on a Black background. The display consists of 720 (RGB Stripe) x 1280 pixels with a color depth of 16.7M colors (24 bpp). The display interface is four data lane MIPI in video mode.Chip-on-glass (COG) with the driver located at bottom front of panel.Touch-On-Display (TOD) touch sensor.9 LEDs on flex for serial backlighting.Tearing Effect output signal.Display operates in MIPI video mode without onboard RAM.Module shape

Assembly141

Schematic

VSP/VSN = +/-5.4VVDDIO = 1.8VWLED from PMICPower-up sequence

Power-down sequence

TroubleshootingNo display or V-line or distorted color: Check Power Supply voltages: VSP (pin 4) = +5.4VVSN (pin 3) = -5.4VVDDIO (pin 5) = 1.8V

Check to make sure there is data activity on all MIPI differential pair lines while display is on.

Check reset line. It should be set high (1.8V) after power on.Camera & Flash LED

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialMain Imager

184/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialMain Imager (cont.)

18

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialMain Imager pinout

32) NC31) GND30) CAM_R_RST_N_FL29) GND28) CAM_R_I2C_SCL_FL27) CAM_R_I2C_SDA_FL 26) GND25) NC9) GND10) GND11) MIPI_CSI-412) MIPI_CSI-513) GND14) CAM_R_PWDN_N_FL15) NC16) GND24) GND23) GND22) VREG_L15_2P821) CAM_DIG_1P820) CAM_DIG_1P819) CAM_R_AGND 18) CAM_R_A_REG17) GND8) GND7) MIPI_CSI-36) MIPI_CSI-25) GND4) MIPI_CSI-13) MIPI_CSI-0 2) GND1) MCLK

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialMain Imager TroubleshootingTroubleshooting Tips: - Check Main reference clk = 24Mhz

Check MIPI data/clk exist on all linesAfter imager APP is launched.

-Check CAM_R_PWDN is high (1.8V)

-Check Analog regulator output = 2.8V

-Check VDDIO logic supply = 1.8V

-Check VDD_AF supply = 2.8V

-Check I2C clk/sda activity is present.

Check reset is high (1.8V)

For _FL signals, check for unsoldered Pins of FL6121

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFront Facing VGA ImagerThe Front Facing (FF) imager is 1.26Mp.The sensor is a color CMOS SOC image sensor with Bayer (Green, Red, Green, Blue) pattern filter.The sensor consists of a minimum of 1296 active horizontal pixels and 976 active vertical pixels.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 (frames per second) image data at 1296x976 full resolution (720P) on a mobile device to enable image capture and video clip capture. Analog Supply regulator (2.8V) located on main transceiver PCB.

121Front Facing 1.2Mp Imager

Front Facing 1.2Mp Imager(cont.)

121

Front Facing 1.2Mp ImagerPin #1 location

Front Facing VGA Imager TroubleshootingTroubleshooting Tips (with Imager on):

-Check Main reference clk = 24Mhz

Check MIPI data/clk exist on all linesAfter imager APP is launched.

-Check reset is high (1.8V)

-Check I2C clk/sda activity is present

-Check Analog regulator output = 2.8V

Check VDDIO logic supply = 1.8V

For _FL signals, check for unsoldered Pins of FL5620

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFLASH-LEDQualcomm PM8226 LED driver channel used for camera flash Still image flash controlled via SW control programming internal to PM8226 registers.Torch Mode (LED continuously on in video mode) controlled via internal PM8226 registers. Flash duration and brightness configured via internal PM8226 registers. Low current torch mode used for image pre-capture.Only one High Output LED (OSRAM/Souel Semi) is required. Separate FLASH-LED flex assembly for improved LED/Lens uniformity.

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFLASH-LED

FLASH-LED connects to Pad-M6100/M6101 via flex assembly.

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFLASH-LED (cont.)External 5V supply that Is the source for the FLASH-LED voltage/current (always on).4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFLASH-LED PCB Layout LED contact locations

VCAM_FLASH, connects to Pad-M6100, Anode.Cathode(M6101)4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFLASH-LED Flex Assembly (mounted to inner rear housing)

VCAM_FLASH, connects to Pad-M6100, Anode.Cathode(M6101)

4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialTroubleshooting Tips:

Check VREG_5P0 for 5V supply (always on).

Check output voltage on VCAM_FLASH = 5.0V when FLASH event is enabled.

Check contact pads M6100 & M6101 are making good connection with FLASH-LED assembly.

.

FLASH-LED TroubleshootingAudioDVX AUDIO DEVICES4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialBACKEarpiece3.5mm Headset JackMain MicrophoneSecondary MicrophoneLoudspeakerFront viewback viewMic Locations and Functions4/21/2014 2010 Motorola Mobility, Inc. - Internal ConfidentialFunctional Name: Main Microphone

Factory Nomenclature: Primary, mic 1

Uses:Speech in handset and speakerphone modesFunctional Name: Secondary Microphone

Factory Nomenclature: Noise cancelling mic, mic 2

Uses:Noise suppression for voice callsMultimedia audio recordingFront viewNo Audio ComplaintsThe CQA apk can be used to verify a broken audio path. Under the Audio menu, select Mic Loopback.The DEFAULT MIC setting loops mic1 to the earpiece. The SECONDARY MIC setting loops mic2 to the earpiece.If both of those are not function, the earpiece speaker path may be damaged. In the 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.

Primary MicrophoneIf the Primary mic is not functioningCheck mic bias at C5702. This should be 2.1V when the microphone is enabled.Check the microphone assembly to make certain it is not damaged, which may indicate a broken diaphragm

Primary microphone output check

Secondary MicrophoneIf the Secondary mic is not functioningCheck mic bias at R5753 or C5753. This should be 2.1V when the microphone is enabled.Check the microphone assembly to make certain it is not damaged, which may indicate a broken diaphragm

Secondary microphone output check

Earpiece Speaker (Handset Mode DOWNLINK)The earpiece speaker does not have any series components. There are shunt components to ground that can be checked (C5791, C5792).The earpiece speaker has a nominal impedance of about 32This is a linear amplifier output, where playing a tone would produce a clean AC output voltage.

Loudspeaker 2010 Motorola Mobility, Inc. - Internal ConfidentialThe loudspeaker can be probed at L5780 and L5781Signal waveform probed at L580 and L581 should look similar to waveform shown belowThe impedance of the loudspeaker should be around 8 when probing on the component

3.5 mm headset 3.5 mm headset

At built level:Check the pins on the headset jack for any bent or broken pins.On the PCB:Series components L4900,E4901, E4903, and L4904 must be physically placed and measure using a DMM. Replace if any are found to be open circuit.ESD Diodes VR4900, VR4901, VR4902, VR4903 must be open circuit. Measure these with a DMM to ground. If any short circuit is found, replace the ESD diode.Shunt caps C4900, C4901, C4903, C4904 must not be shorted across.Capacitors C4915, C4916, C4917, and C4918 must be placed and not damaged. These are series components of the audio path.Resistors R4900, R4901,R4902, and R4903 must be placed. These can be probed with a DMM, where continuity must exist.U4900 must have voltage on the VDD line, and can be probed on either C4913. This should measure 1.8V.U4900 must have voltage on the MICVDD line. This can be probed at C4914. This should measure 2.75V.Debug Procedure: headset

Documents

DVX LTE - Troubleshooting Guide (1).pptx