Sm A326b Troubleshooting

8. Level 3 Repair

8-1. Components Layout

PBA ( Bottom )

PBA ( Top)

Type -C

V_BATTERY

VS2_PMU_1P35

VS1_PMU_2P0

VSYS

VSYS

VS1_PMU_2P0

VSYS

VS1_PMU_2P0

VSYS

VS1_PMU_2P0

VSYS

VSYS

VS2_PMU_1P35

PWRKEY

VOL/DN

RCV

MAIN MIC

SUB MIC

VBUS

Battery

5000mAh

OVP

ET9539AM

TXC

RCV_OUT_P/N

VDD_MAIN_MICBIAS_2P8

MAIN_MIC_P/N

VDD_SUB_MICBIAS_2P8

SUB_MIC_P/N

EAR_MICBIAS_2P7

EAR_OUT_R/L_IN

EAR_MIC_3.5_P

EAR_L_DET

VPROC1/2,VCORE,VPU,VS1/2,

VMODEM,VGPU11/12

VFE28,VAUX18,VBIF28,VUSB,VIBR,

VCN33_1/2,VEMC,VSIM1,VSIM2,

VIO28,VUFS,VCN18,VRF18,VIO18,

VEFUSE, VM18, VCAMIO, VAUD18

VBUCK1~4

PVDD1~4

VSYS

FLASH

CC1/2

VBUS

LDO

TLV75511PDQNR

LDO

ET51518YB

LDO

ET51529YB

LDO

ET51528YB

LDO

ET51512YB

LDO

ET51528YB

LDO

ET51512YB

LDO

ET51528YB

LDO

ET51512YB

LDO

ET51528YB

LDO

ET51528YB

LDO

RP109L111D-TR

RCAM1_DVDD_1P05

CAM_VDDIO_1P8

RCAM1_AVDD1_2P8

RCAM1_AFVDD_2P8

RCAM2_DVDD_1P8

RCAM2_AVDD_2P8

RCAM3_DVDD_1P2

RCAM3_AVDD_2P8

RCAM4_DVDD_1P2

RCAM4_AVDD_2P8

FCAM_AVDD_2P8

REAR CAMERA

48M(Wide)

2M(Bokeh)

8M(UW)

5M(Macro)

FRONT CAMERA

13M

FCAM_DVDD_1P05

PMIC #1

MT6359

BUCKPMIC

MT6315

SUB PMIC

MT6360UP-A

A32 5G BB Block Diagram

LPDDR4A/B_DQ(0~15),LPDDR4A_DQS_0/1_P/N

LPDDR4A/B_CLK_P/N, LPDDR4A/B_CKE_0/1, LPDDR4A/B_CS_0/1,

LPDDR4A/B_CA(0~5), LPDDR4B_DMI_0/1

UFS_REFCLK,UFS_RST_N

UFS_TX_0/1_P/N,UFS_RX_D0/1_P/N

VDD_T_FLASH_3P0

MICROSD_DATA(0:3)

3IN2 SOCKET

MICROSD_CLK,CMD

VDD_VIM2_1P8_3P0

SIM2_RST, SIM2_CLK

SIM2_DATA

VDD_NFC_SIM1_1P8_3P0

SIM1_RST, SIM1_CLK, NFC_SWP

SIM1_DATA

SIM_TRAY_DET

TSP_SCL/SDA_1P8

TSP_SPI_MISO, TSP_SPI_SCN, LCD_RST, TSP_RST, TSP_TA

LCD_ID, LCD_DET, LCD_ESD_DET, TSP_INT, LCD_PWM_CON

OCTA_MIPI_D0~D3, CLK

VSYS

EL_ON1_DET

LCD DC/DC

SENSOR_SPI_MISO

6AXIS_INT,6AXIS_INT2

SENSOR_SPI_MOSI, SENSOR_SPI_CLK, SENSOR_SPI_CS_N

SENSOR_SCL,SDA

PROXY_INT

GRIP_INT1

GRIP1_SCL,SDA_1P8

GRIP_INT2

GRIP2_SCL,SDA

VDD_BTP_3P3

BTP_SPI_CLK, MISO, MOSI

BTP_IRQ

NFC_EN

NFC_FIRM

NFC_IRQ

NFC_CLK_REQ

NFC_SCL/SDA_1P8

CONN_TOP/WB/BT_CLK/DATA

CONN_HRST_B

CONN_WF_CTRL0~2

WF0/BT_/Q_IP/IN

GPS_I/Q

SPK_AMP_I2C_SCL/SDA_1P8

SPK_I2S3_DO/DI/WS/BCLK

VDD_LCD_ELVDD_4P6

VDD_LCD_ELVSS_-4P4

VDD_LCD_ELAVDD_7P3

EL_ON1,EL_ON2

SENSOR

ACC + GRYO

ICM-42605-M

MAGNETIC

MMC5633NJ

PROXY

STK33519

GRIP (MAIN)

A96T356HF

GRIP (SUB)

A96T356HF

Finger

BM23FR0.8-10DS

VSYS

NFC

S3NRN4VX

BT/WIFI/GPS

MT6631

SPK AMP

SMA1303-W

VDD_SIM1_1P8_3P3

VDD_NFC_SIM1_1P8_3P0

VDD_GPS_A1P8,FM_AVDD28,

AVDD18_WBT,AVDD33_WBT

SPK_OUT_P/N

VSYS

VIO18_PMU

SD

CARD

SIM2

SIM1

VSYS

RCAM1_SENSOR_I2C_SDA/SCL

RCAM1_3_4_FCAM_EEP_SDA/SCL

RCAM1_MCLK

RCAM1_MIPI_D0~D3,CLK

RCAM1_RST_N,FSYNC_MAIN_OUT

RCAM2_SENSOR_I2C_SDA/SCL

RCAM2_MCLK

RCAM2_MIPI_D0~D1,CLK

RCAM2_RST_N,FSYNC_MAIN_OUT

RCAM3_SENSOR_I2C_SDA/SCL

RCAM1_3_4_FCAM_EEP_SDA/SCL

RCAM3_MCLK

RCAM3_MIPI_D0~D3,CLK

RCAM3_RST_N,FSYNC_MAIN_OUT

RCAM4_SENSOR_I2C_SDA/SCL

RCAM4_MCLK

RCAM4_MIPI_D0,CLK

RCAM4_RST_N,FSYNC_MAIN_OUT

FCAM_SENSOR_I2C_SDA/SCL

RCAM1_3_4_FCAM_EEP_SDA/SCL

FCAM_MCLK

FCAM_MIPI_D0~D3,CLK

FCAM_RST_N

AUD_NLE,DAT,CLK I2S

SYSRSTB,SRCLKENA0/1, WATCHDOG

EXT_PMIC_PG, EXT_PMIC_EN1/2

SCP_VREQ_VAO

PWRAP_SPI0

AP_PMIC_CLK_32K

058812

SPMI_M_I2C

EINT_6315_1,EXT_PMIC_PG

EXP_PMIC_EN2, SRCLKENA0/1,WATCHDOG

VOL /UP

SUB_PMIC1_I2C_SCL/SDA_1P8

CC1/2

EINT_SUBPMIC_/PD_IRQB, EXT_PMIC_PG, CHRDETB

CAM_FLASH_TORCH/STORBE

EXT_PMIC_EN1, WATCHDOG, SRCLKENA1, SIM_TRAY_DET

VSYS

M

VDD_VIB_3P3

AP

MT6853

uMCP MEMORY

TSP

ILI9882N(ILITEK)

LCD

6.5" HD+

Vcut

VDD_SENSOR_1P8

VDD_GRIP_3P0

VDD_BTP_3P3

LDO

ET51530YB

SPK

VDD_TSP_A3P0

VDD_LCD_1P8

VDD_LCD_3P0

VSYS

VUFS18_PMU,VEMC_PMU

EMI_VDD1,2

SUB ANT 1

DRX L/M/HB

DRX MIMO N7/41

PRX MIMO N79

MAIN ANT 3/4

DRX MIMO N78/N79

PRX MIMO 1/3

QM13324

SP4T

MIPI_ANT0

(#S1)

QM13324

SP4T

MIPI_ANT0

BT/WIFI ANT

BT/WIFI

CABLE_DET_MIMO

SUB ANT 5

N78/79 DRX

LFD181G65MPUF177

Diplexer

(#M3)

DRX_ANT_MHB

DPX202700DT-4179A1K

Diplexer

GPS

(#M3-1)

DRX_ANT_LB

FCC ID : A3LSMA326B

(#S5)

MXD8648MS

SP4T

RFFE 2

SFWG42CBB02

B1/3

(#M3-2)

SFMR9Z0L001-SYM1

DRX FEM

Switch

Switch

B1(4) Rx

B3 Rx

B34 Rx

B39 Rx

B41 Rx

B40 Rx

B7 Rx

MHB_TRX1

MHB_TRX2

MHB_TRX3

B26(5) Rx

B8 Rx

LB_TRX1

LB_TRX2

LB_TRX3

LB_TRX4

MIPI

Control

MXDLN16U

GPS LNA

RFFE1

LNA

SFWG45AQE02

2.4G(SAW)/5G DIPLEXER

SFHG89BF302

RFFE1

(#M3-1-1)

LFB213G50CT2E367

SRS_OUT3_N79

SRS_OUT3_N78

(#M3-1-2)

(#M3-2-1)

(#M3-2-2)

MXD8621E

SPDT

ATTEN

SFWG62DBB02

SRS_OUT3_N41

SAFFB742MAA0F3K

B7502

SFH806BA002

BGS14MPA9

SP4T

RFFE1

SRS_OUT2_N78

SAMSUNG

CONFIDENTIAL

(#S5-2)

SRS_OUT2_N79

LFB213G50CT2E367

MXD8018US

N78 LNA

RFFE1

LNA

MXD8018MS

B3 LNA

RFFE1

LNA

MXD8018MS

B1 LNA

RFFE1

LNA

DRX_LNA_IN_B7_4RX

DRX_LNA_IN_B41_4RX

DRX_LNA_IN_B7

DRX_LNA_IN_B38_40_41_N40_N41

DRX_LNA_IN_B1

DRX_LNA_IN_B4_66

DRX_LNA_IN_B2_PCS

DRX_LNA_IN_G1800_B3

DRX_LNA_IN_B12_17

DRX_LNA_IN_B20

DRX_LNA_IN_B28

DRX_LNA_IN_G850_B5_26

DRX_LNA_IN_EGSM_B8

MXD8018U

N78 LNA

RFFE1

LNA

DRX_TR_IN_N78_4RX

PRX_TR_IN_B3_4RX

PRX_TR_IN_B1_4RX

MT6191

RFFE1

DRX LNA BANK

1

1

2

DRX_TR_IN_N78

DRX_TR_IN_B7_N41_4RX

DRX_TR_IN_B7_38_40_41_NR

DRX_TR_IN_B1_4_66

DRX_TR_IN_B2_3_GHB

DRX_TR_IN_B12_17_20_28

DRX_TR_IN_B5_8_GLB

GPS_RF_IN

WB_RF_2G

WLAN_RF_5G

A32_5G RF BLOCK Diagram

MT6190W

Transceiver

LB

MB

Juw

5G RF

TRx

2.4G WiFiIBT RF

WiFi {

BT

Shared

RF

TRx

TX0A0_MB0

RXD_MHB_LNA11

RXD_MHB_LNA10

RXP_UHB_LNA26

TX0A0_MB1

TX0A0_LB1

TX0A0_LB0

RXP_LB_LNA03

RXP_LB_LNA02

MRX0

MRX1

TX1A0_MB0

TX0A0_HB0

TX1A0_HB1

RXP_MHB_LNA16

RXP_MHB_LNA17

RXP_MHB_LNA18

RXP_MHB_LNA19

TX1A0_HB0

RXP_UHB_LNA24

TX1A0_CB0

RXP_CB_LNA25

XO_IN

TX0_TR_OUT_MB

DRX_TR_IN_B1_4RX

DRX_TR_IN_B3_4RX

PRX_TR_IN_N78_4RX

TX0_TR_OUT_GSMHB

TX0_TR_OUT_GSMLB

TX0_TR_OUT_LOW

RXD_CB_LNA23

RXD_UHB_LNA22

RXD_UHB_LNA20

RXD_CB_LNA21

RXP_MHB_LNA14

RXP_MHB_LNA15

RXD_MHB_LNA04

RXD_MHB_LNA05

RXD_MHB_LNA07

RXD_MHB_LNA06

RXD_LB_LNA01

RXD_LB_LNA00

RXP_CB_LNA27

GPS_RFIN

WB_RF_2G

WF_RF_5G

HB

HB

56

3-wire

Ctn

5G

PTA

Control

WBT

2-wire

Ctn

PTAT

WBT

Control

2

From

MT6631N/B

BT/WIFI/GPS

5G WiFi RF

GPS RF

GPS 2-wire

GPS dig

DET ínput

2

0

HRX

GPS RF

RFIC_PDET

NR_CPL_OUT_TX1

TX1_TR_OUT_MB

TX0_TR_OUT_HB

TX1_TR_OUT_HB

PRX_TR_IN_B7_41_N41_4RX

PRX_TR_IN_B7_38_40_41_N7_41

PRX_TR_IN_B2_3_39_GHB

PRX_TR_IN\