8. Level 3 Repair (VIETMOBILE.

VN)

8-1. Components Layout

U7003
Ambient sensor

SOC8003
RCAM3 CONN

SOC8002
RCAM1 CONN

CN7000
SIM/SD CARD
Socket

U1004
U6000
POWER AMP
IF PMIC

ANT6000,ANT6001
Motor Contact ANT6005, ANT6004
ANT6002, ANT6006
ANT1002 SIDE KEY CONTACT
U7001 UCP400 UME5000 U6005
GND CCP
SPK AMP AP MEM Direct charger

MIC7000 SOC8000
SUB MIC VT CAM
U2009
CONN
DRX LFEM

U3001
BT/WIFI/FM

PAM2000
HIGH BAND PA

SOC8004
RCAM4 CONN
U2001
Transceiver
LED6000
FLASH LED
U1000

SOC8001 MAIN CA PAMID

RCAM2 CONN
U7006
CODEC

U7004 SOC6000 U6002 U6003 SOC9000

ACC&GYRO BATTERY PMIC PMIC C2C FPCB
SENSOR CONN CONN

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair (VIETMOBILE.VN)

ANT1001, ANT1002 SOC1002

SPK CONN Con to Con CONN

SOC1001
BTP CONN

SW1005

SW1002 RF Switch

RF Switch
ANT1007
Ant CONN

ANT1004 ANT1003 SW1001 ANT1006 SW1003

Ant CONN Ant CONN RF Switch Ant CONN RF Switch

U1003
FM LNA

ANT1010
Ant CONN CON1000
Ant CONN

ANT1008
Ant CONN

ANT1009
Ant CONN U1001
Grip Sensor

ANT1005
SW1004 U1002 ANT1000 Ant CONN
RF Switch Hall IC Ant CONN

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
 SM-A525F Block Diagram SM-A525F/M
Common

MAIN2 ANT
MB/HB EBI0_CA(0:5)
PRX_TR_IN_B7 PRX_MHUHB1
EBI0_DQ(0:15)

EBI0_CLK/CKE/CS/DMI/DQS

TX_TR_OUT_B7_38_40_41_CH0 EBI1_CA(0:5)
TX_CH0_HB1
HB FEMid
TX_PA_OUT_B7
EBI1_DQ(0:15)
Memory
TRX_ANT_HB
SFMD3L0F001 EBI1_CLK/CKE/CS/DMI/DQS
LPDDR4 4/6/8GB
TRX_B40 HB PAM DDR_RESET_N
uMCP 128GB
Coupler Diplexer WIPS33232-01
UFS TX/RX
HHM22137A3 DPX252690DT-5075C1K LNA
K PRX_TR_IN_B38_40_41 PRX_MHUHB2
MXD8921HS UFS REFCLK
TRX_B38_41
UFS_RST_N

TX_PA_OUT_B1 VBUS_IF
OVP VBUS_OVP

TX_PA_OUT_B2 TX_TR_OUT_B1_2_3_4_66 KTS1682

TX_CH0_MB2
TX_PA_OUT_B3
SBU1/2 IF CON
TX_PA_OUT_B5_26 MUIC_D_P/N
TX_TR_OUT_GSMHB TX_CH0_MB1
TX_PA_OUT_B8 CC1/2
CPL_MHB

TX_PA_OUT_B20 IF_PMIC_SDA/SCL
TX_PA_OUT_B12_17 LMB TX_TR_B5_8_12_13_17_20_28_71 TX_CH0_LB2 CC_SDA/SCL
Direct Charger
MAIN1 ANT IFPMIC
TX_PA_OUT_GSMHB MMMB PA IF_PMIC_INTB IF_PMIC_SDA/SCL PCA9468UK
LB QM58110
TX_PA_OUT_GSMLB TX_TR_OUT_GSMLB TX_CH0_LB1 TYPE_C_INT SM5714
TX_PA_OUT_B4_66 USB_AP_D_P/N VBATGND_DC_SENSE
VBAT_SENSE
TX_PA_OUT_B28 AP_UART_RXD/TXD
VBATTERY_CON
CAM_FLASH_EN CSP Battery
A525M Only
CAM_TORCH_EN
B13 DPX TX_PA_OUT_B13
PRX_ANT_MB TRX_B13
Coupler ANTMB B8682 VBATGND_SENSE

COUPLER-10L- FLASH LED

PRX_ANT_LB ANTLB
ALL-065T-
1WAY-HIGH- PRX_TR_IN_B13 PRX_LMHB1
MICROSTRIP
VDD_MOT_3P3 MOTOR
MAIN CA FEMid PRX_TR_IN_B12_17 PRX_LMHB2 PM_SW_ON POWER KEY
LMSWKQGS-K72 NVBUSOK

QLINK_TX1_N SDM_CXO VOL_DN Vol DOWN

A525F Only SDM_RF_XO
QLINK_TX1_P PMIC Crystal
SLEEP_CLK Oscillator
SAW FILTER
PRX_MHB1 PM6150 38.4MHz
PRX_TR_IN_B32 QLINK_RX1_P SDM_RESIN_N
SAFFB1G47AA0F3K
SDM_PS_HOLD HALL IC(SUB)
QLINK_RX1_N HALL_INT2
ET3712A30
PRX_LMHB4 QLINK_RX2_P

(VIETMOBILE.VN) SDR675 QLINK_RX2_N

SUB_DET SUB PBA
SPMI_DATA/CLK
TX_PA_OUT_B28 SPDT PRX_MHB5 QLINK_RX3_P FAULT_N
B28 DPX PRX_TR_IN_B28_71
TRX_B28
B1250 PRX_SW_IN_B28 MXD8621E QLINK_RX3_N
PRX_LMB1

PRX_TR_IN_G1900_B2 SUB_REV
PRX_LMB3
GRIP_I2C_SDA/SCL GRIP SENSOR
PRX_TR_IN_G850_B5 GRIP_INT2 PMIC(SUB)
PRX_LMB2 LOWER
QLINK_CLK_P PM6150A VOL_UP Vol UP
PRX_TR_IN_EGSM_B8
PRX_MHB4 QLINK_CLK_N
CAM_FLASH_EN
PRX_TR_IN_B20
PRX_MHB2
FG_ERR
PRX_TR_IN_G1800_B3 RFFE1_CLK
PRX_MHB3 TSP_INT
OCTA_CON_DET
RFFE1_DATA
PRX_SW_IN_B1 PRX_TR_IN_B1_4_66
SPDT LNA SPDT TSP_SDA/SCL VDD_LCD_ELAVDD_7P6
VDD_LCD_ELVDD_4P6
MXD8621E MXD8921HS MXD8621E Display VDD_LCD_ELVSS_-4P4
PRX_SW_IN_B4_66 PRX_TR_IN_B1_4_66_CA OCTA_MIPI_D(0:3)_P/N Display
EL_ON2 PMIC
SUB ANT1 OCTA_MIPI_CLK_P/N
EL_ON1 S2DOS15X04-6030
LB OCTA_RST_N

EL_ON1_DET

6AXIS_INT1 6 Axis Sensor

TR_FBRX FBRX_IN_P 6AXIS_INT2 ICM-42605M CAM_SPI_CS/SCK/MOSI/MISO

DRX_ANT_LB LB DRX LFEM

DRX_TR_IN_B5_8_20_28_71_GSMLB DRX_LMB1
SM7125
DRX_TR_IN_B12_13_17 DRX_LMHB1
SFML5E0K001
CAM MCU
AP_MCU_SDA/SCL CAM_OIS_SDA/SCL
STM32G051
SAW
SAFFB2G59AA1F3K
CAM_AF_EEP_I2C_SDA/SCL RCAM1
RCAM1_SENSOR_I2C_SDA/SCL
MIPI_RCAM1_C-PHY_3LANE
64M OIS
RCAM1_MCLK / RCAM_FSYNC / RCAM1_RST_N
DRX_TR_IN_B7_38_40_41 DRX_MHUHB1
RCAM2_SENSOR_I2C_SDA/SCL RCAM2
DRX_TR_IN_B1_4_66 DRX_MHB1 MIPI_RCAM2_DATA/CLK 5M
M/HB DRX DRX_TR_IN_B1_4_66CA_B2_3_GSMHB DRX_MHB3
RCAM2_MCLK / RCAM_FSYNC / RCAM2_RST_N BOKEH
LFEM CAM_AF_EEP_I2C_SDA/SCL
QDM3870
FCAM_SENSOR_I2C_SDA/SCL FCAM
MIPI_FCAM_DATA/CLK
32M
SUB ANT2 FCAM_MCLK / FCAM_RST_N
CAM_PMIC
MB/HB/GPS ANT CAM_AF_EEP_I2C_SDA/SCL
RCAM3
DRX_ANT_MHB RCAM3_SENSOR_I2C_SDA/SCL
RCAM3_MCLK / RCAM_FSYNC / RCAM3_RST_N 12M
SAW
DRX_B38_41
SAFFB2G59AA1F3K SUPER WIDE
MIPI_RCAM3_RCAM4_DATA/CLK
MIPI SWITCH MIPI_RCAM3_DATA/CLK

SAW
A525F Only PI3WVR648GEAEX-71 MIPI_RCAM4_DATA/CLK RCAM4
DRX_B32
SAFFB1G47AA0F3K 5M
RCAM4_SENSOR_I2C_SDA/SCL
RCAM4_MCLK / RCAM_FSYNC
MACRO

GPS Extractor LNA SAW RCAM3 RCAM3 RCAM3 RCAM1 RCAM1 CAM MCU RCAM4 RCAM4
QM28014 GNSS_RF_L1_IN GNSS_RF_L1_IN GNSS_IN_L1 RCAM2_LDO_EN
MXDLN16U SFHG89BF302
AVDD LDO AVDD LDO DVDD LDO OIS AVDD LDO DVDD LDO AVDD LDO DVDD LDO
WiFi 5G ANT RCAM3_LDO_EN

WL_BT_RFIO_2G_CH0 RCAM1_LDO_EN
RCAM4_LDO_EN
WL_BB_IQ_TX CAM_PMIC_I2C_SDA/SCL

WiFi 5GHz : 5180 ~ 5825MHz WL_RFI_5G_CH0 WL_BB_IQ_RX HALL IC(MAIN)

HALL_INT
SPDT ET3712A30
WiFi 2.4G ANT SAW
DEA165500BT-
MXD8621E BT_FM_CLK
WL_RFO_5G_CH0
2208A1K
BT_FM_DATA Proxy&RGB Sensor
PROXY_LIGHT_SDA/SCL
STK31610-230S
BT/WIFI/FM 38.4M_CLK
WCN3988 Magnetic Sensor
BT/BLE : 2402 ~ 2480MHz WCSS_CH0_CMD_CLK/DATA
MAGNETIC_SDA/SCL
AK09918C
WiFi 2.4GHz : 2412 ~ 2472MHz
SAW
SAFFB2G45MA0F3 WL_BT_RFIO_2G_CH0 WL_BT_COEX_CLK/DATA BTP_RST_N Finger Print Sensor
BTP_SPI_CS/SCLK/MOSI/MISO
K GW9578
WL_SW_CTRL
FM ANT MAIN MIC
MAIN MIC P/N
HCI_UART_RTS/CTS/TXD/RXD SUB MIC P/N SUB MIC
SWR_TX_CLK/DATA1/DATA2
LPI_UART_1_TXD/RXD CODEC EAR MIC P/N EAR MIC
FM_LNA SWR_RX_CLK/DATA1/DATA2
MXDLN10T CODEC_IRQ_N WCD9380
EAR OUT L/R EAR_OUT
EAR_L_DET/EAR_OUT_FB

Global RF Band Information NFC ANT SPK AMP I2C SDA/SCL SPK_OUT_P/N SPK
SPK_I2S3_BCLK/DO/DI/WS SPK AMP SPK_SNS_P/N
GSM : 850/ 900/ 1800/ 1900 AMP_EN
SPK_AMP_INT
TAS2562HYFPR

WCDMA : B1/ B2/ B4/ B5/ B8 NFC_EN

SPK AMP I2C SDA/SCL

LTE FDD : B1/ B2/ B3/ B4/ B5/ B7/ B8/ B12/ B13/ B17/ B20/ B28/ B32/ B66 NFC_FIRM SPK_I2S3_BCLK/DO/DI/WS RCV AMP RCV_OUT_P/N
RCV_SNS_P/N
RCV
NFC TAS2562HYFPR
LTE TDD : B38/ B40/ B41
NFC_IRQ AMP_EN
S3NRN4VXS1 NFC_CLK_REQ SPK_AMP_INT
-MX30 SIM_DET
T_FLASH_DET_N
NFC_SCL_1P8
SDC_DATA/CLK/CMD
NFC_SDA_1P8
SIM1 RST/CLK/DATA SIM / uSD
SIM2 RST/CLK/DATA SOCKET

NFC_SWP1
 BOTHHOLE4004
BOTHHOLE4008 U7003
BOTHHOLE4005
C8017
L8004
ANT3000

C3000 TP3005

TP3006

TP3000
CON4001
TP3001

TP3002

TP3004
ANT1001
TP3003
C3001
ANT3002

SOC8003

R7009
TP7010

C7042

U8004
R4014 R4013 C8019
C8031

ANT1000 U8011U8007
TP7020

C8030
C8018

U8003
C8033
C8026

C8032

R8011
TP8004

TP8003 C8027
R4012 R4010

U8001
C8059

U8006
TP8005

C8060
C8025
R8008
C7046

R8005
C7050

CN7000
L7019

R4028
R4026
R8010
R8009
C8061
C7049
C8054 C8055

R8006
L7018
R7010
C8067

L8001
C6104
C7052
C8068

U8008
R4009
R4007
R7012 C6103 R7014

C8049
C8050 C8051
R8007
C8010

SOC8002
C7000
R4019
R4020

C7055 R7018 C7005

C7047

BOTHHOLE4000 BOTHHOLE4001
TP7000 C7004
R4029
TP7002

C7019 C7020
R7016
GND1
L7002

U7000 L7008
TP7003

TP7004 R7020 R4030

L7009 C8008 R4031
C7012 C8011 C8005
R4006
SM-A525F/M
C7015
C7014
C7013

C8006

L6011
R4041
R4040
Common

C5074
R8004

R8000 R8003 R8001 R8002 R4011 C5099 C5121 C5097

C8020 C8012 C8016 C8058 C8004
R4037
R4047

C8035 C8045 C8036

C7053
R7013

UCP400

C8040
C8041
R7017 C1062 C1053 C1054 R5001
R5000 C8043
C8042

C8046
C8047
C8048
TP3014

C5094
C1082 C8038
U8005
U1004
L1034L1035L1036L1037C1058 L1054 L1048 C1089
C1042C1044 C1046 C1051L1040 L1055 C1088 C1093

C6032
C8034
TP7001
C1043 C1045 C1047C1052 C1064 L1056 L1051 L1053

L1046

SC9001

C8044
TP7013

C8039

C6012
C1083 TP7012

C5095
C1069
OSC6000

R4042
R4043
C8037

UME5000
L1043 C5101 C6010 R6002
C1073
TP5003 TP5002
C5130 C6110 R6003

R6000 R6031 ZD6001

TP5007
TP5005
R6010

L6000
C1061 C5127
TP5004

C6005 C6007

D6000
L1065 VBUS
TP_SLEEP_CLK
TP5001
TP5006

C5126 C5102
C4004

D6001
C1059 TP4002 TP5008

SC9002
C1060
C1067 C6017

U6000
C1066 C6001 R6009

ZD6000
C6008
C6009
L1041
C1049
C6002 C6019 GND
L1038 C6000
C1050
C6020
TH6000

R6012
C1056
C1055

C1057

C6004
C6016

C6003
C6078
R7004 TP5000

ANT6003
R4046 TP6003
TH4000 C4005
U7001

C7031 R4035
C9015 BOTHHOLE4007
TP4001

R4044 L6006
L9003

C7029
C7036
R4036
C6113
R4039
R4038
C9004
C9003
C9005

TP6006
BOTHHOLE4003
L9002
C7028

C9017L9004
C9016

R4034 C9014
C5079
C9011 L9005

C5077L3016L3015
C5118

C5078
R6007

C5100
C5080

C5120 C5119 C5098

C5117

R6006
C6114
R4024
R4022

U6005
R4045
C6119
C3043

C9010
C7037
R4027

C9013

C6120
TP3015 TP3012
C3051

R4025 TP3013

C7056

ZD6004
C6117

TP3016
L6015
C3058 C3048
C6115
ANT6000 ANT6001
L7015
L7014
R7021 R7022

C7038
R6026
R7019

U3007

ZD6006

TP3011

U9000 L9001 ANT6005 ANT6004

C9000 L9000

L7010 R3002 C3059 C6092 C6097

ZD6005
C3060 R6027
C7051
C7040

C7039

TP3009 TP3010 C6111 C3052 L6017

C6025

C7030 BOTHHOLE4002 R3001 C3053 C6091

U6007

C6023

C9007
C9009
C9006
C9008

V5000
R5044

R6025
C9002
C9001

ANT1002
C3054 C6077
ANT6002 ANT6006
C3047

L6014
C3046

C3050
C3049

C3042
R4002
R4000

R6001
ZD6003

JTAG4000 JTAG4001

JTAG4002
 R7011MIC7000
ANT2001 ANT2000 ANT2002 ANT2004 ANT2003

L2050
L2053

U2000

L2001

L2007 C2043
L2006 L2010

C2130
L2004
R4015

L2000 C2000

C7043
C7003

R4016
R7003
C2036 C7006
L2005

C2001

F2000
C2109 C3035 L3011

L3020 C3061 L3024 C2032

C3023 C3022
C3020
C3021
C3019
C3018
C3029
C3028
R3000
C2039

L7003
L2003
C2045 C3033 C3034 U7005
C7007

L2016L2014
SOC8000
TP_WCSS_DATA TP_WCSS_CLK

C3016

U3001
C3017 C2021

L3005
L3004

C2044
C2046
L3018 C3063 C3067 TH3000
C3003

L3000
C9022 C3007

C3015
C3030
U3008
C3065

L3019

C3032

L3002
U3000

L3001
C2047

C3002
C2112 BOTHHOLE4006 C3014 L3003

U2008
L2013
C2113

C3013
C3025
C3027
F3000

L3010
C3004
C3062 L2012 TP3007

C3024

L2046 C2120 C2119

L2045 C2121 C2118
C2116 C3031 C3026

L2038
TP3008

C2117

R4003 R4001
C8002

C3068 C3069C3070
R4017 R4018

L2011
ZD1000 C2051

U2003
L2048

C8003
F2006

C8001
C8062
L8000
C2115 C2114 C2111 C2110
L2044

U2009

C2053
C2052
U9002

U9015

C2090
C2050

C2095
C2096
C7048
ANT7001 C2128 C2125 C2123
C2079 L2026

C7022 C7023
L2049 C2124 C2122 C2074
C2075
L2009 L2008

C2108
PAM2000

U9016

C2073
C2076
F1008
ANT7000 C2033
L2002
C2071
U2005 C2063
C2067
C2066 L2025
L2015

L2020
C2065

C2077
C2101 L2031

C2017
C2015
C2016
C2003 C2018

C2102
L2035

C2091
L2029
TP2001
C2087 C2089
C2002 C2004 C2106

C2007 C2006 C2020

C2019

U2007
C2135

C2008 C2011
C2134

C2105
C3064

U2001
F3003 C2014 C2129

C1029 L2037
C2012
L3021

SC9003

C1028
L3023 L3022 C1012
C2042

C1011
C2107
C2040
R1005

C2005
C2010 C2009
C2064
C2013
C2028
C2024 C2027 C2025

C1000
C2022 C2030 C2023

C2031

C1007 L1009
L1019 C1018
L1013 L1005
L1083 R2000
C2029
SOC8004

L1008
C1014 L1011

C2026
C6107

L1014
C6083
C6084
C6087
C6085
C6088
L1004 C1038

L1006
C1105
L1064
C1102
L1062
RFS1001
R6021 C1001

L1030
R6019
C6102 L1007
C6073 R6029 C6076 U1008 L1082

L1061 C1106
U6003
C6108 C1013

F1001
U1002
C1104

C1099 L1025
U1007

U1003
C6081
TP6004
C6079 C6105
L8003

L1029
C6100
C6095 L1000

L1002 L1001
C1101 C1021

L1079 C1004
L1080 L1003
C1002C1003
L6018
C6101
C8023 C8021 C8022 C1025 C1036
C6096
SM-A525F/M L6016
C6090

C1010
C6093 C1031

R1000
C1015
C1005

L1024
C1024
C6098

L1028 COUP1001
LED6000

TP6005

C1020
C6094 R1006

U1000
C1030

C6099

L1026
R6028
C6106

C6072
C6071

Common
C1008

L6007
C6070

L6013
R1001
C5123

C6074

C1016 C1009
L1015 L1010
C9027 R6013 C6029 C6075 C6080
C6086
C6082
RFC1000

L1016
C1017
ANT8000

L6009

L6010
C6089

SC9004
C6022

L6008
C5056 C5057 C5059
C6038

L6012
C6024
C6026

L6005
C6056

COUP1000
R1007

L1031
C1041 C1026
C6057 C6030

C1085
C5073 C1033
L1018 C1076 C1079 L1032

L1023
C5070
C5069
C6054 C5058 C5043

L6004

L1012
C5075 C6031 C6027
C5165

L8005 C5105
C5166 C5015 C5048 C5010 C5011 C5039
C5051
F1004
C5106
C5008

R1003 C1022
R1004 R1002 C1027
C6062 C6013R6005
C6055 C6014
R6008 R6030

C5001 C5068

C1091
C5026 L1017
C8014 C5009
C5137
C5167

C1090
C5124
C5052
C5156

C5104 C5000 C5072

C5149
SOC8001 C8015
C5076 C5116 C5103 C5012
C5053

F1006
C5096 C1098
HDC4000

C1094

L1058
C5062 C5046

L1057
C5148 C5045 C5054
C5047 C5037

C5125 C5093
C6021

C1097 C1096
C1023
C5002 C5030 C5014

U6002
C6006
L6001
C5115

C5036 C4002C4003 C5041

C5029
C5142 C5145
C5150

R6004 C5090 C5088 C5087

L1020
C6011
C5147 C5155

BOOT0 C6035 C5081 C5091 C5136 C5109 C5143 C1006 TH2000

ID
C6036 C5146
C5089
C5007 C5005 C5035
C5033
USB_N C6058
C5031
C5133

C5164
C4001
C4000
R4033
R4032

C5153
USB_P
L6002 C5028 C5107
C5004 C5144

C7018
C7025
C6015 L7007 C7026 L7006 C7017
C6053

C6039
C5034 C5082
C5151

C5152

C5032 C5110 C5131 TP7009

C6028
C5163

TP6000

C5141 C5049 C5006 C5027 C7024

C7035
TP7016 TP7018 C5044
L7013
ZD6002

L8002 C8013 L7011

C6066 C6065
C6046
C6067
C6047

C5085

C6034 C5138 C5018 C5025

C5042 C5024
C6068
C6018

C5128

U7006
TP4000

C7027
C5055
C5038
C5040

C6033 C5139 C5023

C6044

C5129
C7002
L6003
TP7008
C6060 C7011
C6042 C6041
C6040

C6049
F9000

R6014

C6043

C6050 TP7005 TP7007 C7034

C6059
C6061

TP7006
C6052 C7032
C6051

C6048 C6037 C6109

TP2000
R6015

C6045 R7002
L7005 C7033
C7009
R7000

R7015
C7016
C7008
C7054
C3037 C3038

R7007
C8028 C8029

C7010

R4005 C7001
R7008
TP9001 TP9000
SOC6000

U3004

U9010
U9009
U9014
U9011
L7004
U8002
C6069

U6001

R9002 C7021
C2127
C2126

R4004
R4008
TP7014
R9000
C7045
R4049
R4048

SOC9000
C6064

D6002

R6017
ANT3009
U7004

CON4000
L7017
L7016
C7041

TP7015
R6018
TP7017

R6016 C3057
R4050

TP_UB1 TP7019
R9004
R9008

C3056
C9020
C9021

R9003

R9001
C9019
C9018
R4023
U9013
U9012

R4021
C9012

ANT3008
ZD9001
TP_UB0 U7002 R3003
C7044 TP7011
ZD9000
8. Level 3 Repair

8-3. Flow chart of Troubleshooting.

Oscilloscope Digital Multimeter

Power Supply + driver, ESD Safe Tweezer

8960 & Spectrum Analyzer Soldering iron

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-1. Power On

No Power

YES
NO Charge device with TA.
Check Battery voltage ≥ 3.8V? Swap battery if battery voltage is too
low (less than 3.0V)

YES

Does Boot sound and Yes

vibration motor work when Swap FRONT-LCD ASSY

power on?

No

NO
When pressing the Power key, SWAP Power key FPCB
R6025 voltage is low?

YES Check voltage of U6002

L6001 = 1.13V , L6002 = 0.868V , L6003
= 0.912V, L6004 = 1.056V , L6005 =
NO
Check voltage 2.04V
TP6005 = 1.8V Swap U6002, if measured value is not
same with above.
※ Consider voltage margin ±10%
YES

NO
Check clock of OSC6000 Swap OSC6000
38.4MHz? ※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)
YES

Check Power on

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-2. Initial

Initialize (booting) fail

Yes

Download the latest binary

(SW)

Not OK
Check whether the charging is ok with TA.
Not OK
Check whether the device is flooded or SW
Check 8-4-1 Power on
routing.
Check whether VBAT connect to GND
OK

Swap UCP400

Not OK

Swap PBA

OK

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-3. No Service

No service

Yes
No

Home screen → Phone → CP : A526BXXXX

Keypad → *#1234# → Check
Check the connection of coaxial cable
Phone version → CP :
A526BXXXX or unknown

Yes
No
Check the Voltage No
C6044, C6045 : 0.8V
Replace the U6002
C6053 : 1.8V
C6059 : 2.7V

Yes
No
No
Check the clock OSC6000
Is the frequency 38.4MHz? Replace the OSC6000

Yes
No

Replace the U400

Yes
No

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-4. SIM Part

INSERT SIM CARD

YES
예
NO
SIM is OK? Swap SIM socket

YES

NO Change SIM card.

Check voltage of SIM card
If sim card does not work after change,
(C7052) 1.8V or 3.0V?
check CN7000 (Crack etc).

YES

NO
Check SIM RST / CLK / DATA.
(SIM1 : TP7001, TP7010, R7012) Check UCP400 (Crack etc)
Signal OK?

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-5. T-Flash Part

Insert T-Flash card

Yes
No
No
Is SIM socket ok? Replace SIM socket

Yes
Check the T-flashNo
Voltage. Change to the new T Flash card.
(C7048) = 2.96V ? No If it doesn`t still work T Flash card after
changing
the T FLASH, Check the CN7000
Yes
(Crack etc)
No

Check the t-flash No

CMD / CLK / D0
(R7010, L7019, TP7020) Check the UCP400 (Crack etc)
Is signal ok?

Yes
No

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-6. Cable Charging Part (Normal/Fast)

INSERT charging cable

YES

NO
VBUS_OVP(C6064)
= 5V or 9V ? Change TA or cable

YES

NO

VBUS_IF(C6069)=5V or 9V ?
Swap U6003

YES

NO
Check charging Swap U6000

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-7. OTG

OTG NOT OK

YES

NO
VBUS_IF(C6005) Check U6000
= 5V ? (crack, open, damaged, etc.)

YES

NO
Check voltage Check U6001
VBUS_OVP(C6064) = 5V ? (crack, open, damaged, etc.)

YES

NO
Check OTG Change OTG Gender

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-8-1. Magnetic Sensor

Magnetic sensor doesn’t work

YES

Voltage Check. NO
Check U6003 (Crack etc.)
C7043 = 1.8V

YES

I2C Line check NO

Replace U7005
R4015, R4016
(I2C 가 정상인가?)
YES

UCP400 Check 이상

(crack, open, etc.) Replace UCP400

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-8-2. 6Axis Sensor

6-axis sensor doesn’t work

YES

Voltage check NO
Check U6003 (Crack etc.)
C7045 = 1.8V ?

YES

NO
I3C line check Replace U7004
(R4048, R4049)

YES

UCP400 Check 이상
Replace UCP400
(crack, open, etc.)

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-8-3. RGB Light sensor

RGB Light Sensor doesn’t work

YES

Voltage Check NO
Check U6003 (Crack etc.)
R7009 = 1.8V ?
(Sensor’s IO 전압)
YES

NO
R4010, R4012 Check
Replace U7003
(I2C is OK?)

YES

비정상
UCP400 Check
Replace UCP400
(crack, damaged, etc.)

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-8-4. Hall Sensor

Hall Sensor in Sub PBA doesn’t work

YES
NO
Voltage Check NO
Check U6003 (Crack etc.)
C1021 = 1.8V ?

YES
NO
비정상
U1002 Check Replace U1002
상
(crack, damaged, etc.)
NO

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-8-5. Fingerprint Sensor

Fingerprint sensor doesn’t work

YES

NO
Check the connectors of Connect the Main PBA SOC9000
Main PBA & Sub PBA
And Sub PBA SOC1002 again

YES
o NO
Check voltage
Swap U6003 in Main PBA
C1002 = 3.3V in Sub PBA

YES
o NO
Check SPI of fingerprint sensor
Swap UCP400 in Main PBA
4, 6, 8, 10pin of SOC1001 in Sub PBA

YES
o

Swap fingerprint
sensor module

YES
o

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-9-1. Microphone Part - Main MIC

Check operation of bottom MIC

With *#0*# loopback RCV_1stMic

YES

Check Sub PBA NO

Swap Main PBA CODEC (U7006)
L1010 Voltage = 1.8V

YES

Check Sub PBA NO

Swap SUB PBA MIC1001 or L1012
L1012 MAIN_MIC_P

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-9-2. Microphone Part - Sub(2nd) MIC

Check operation of Top MIC

with *#0*# loopback SPK_2ndMic,

YES

Check Main PBA NO Swap Main PBA CODEC (U7006)

C7003 Voltage = 1.8V

YES

Check Main PBA NO

Swap Main PBA MIC7000 or L7003
L7003 SUB_MIC_P

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-10. Speaker Part - Bottom speaker

Check operation of *#0*# SPEAKER ▼

YES

NO
Check SUB PBA C clip
Swap SUB PBA ANT1001, 1002
ANT1001,1002 are normal

YES

NO
Check the SPK Output Swap Sub PBA L1001, L1002
at SUB PBA Swap Main PBA AMP (U7001)
L1001,L1002

YES

Swap BOT Speaker Module

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-11. Speaker Part - Top speaker

Check operation of *#0*# SPEAKER ▲

Check operation of *#0*# RECEIVER

YES

Check Main PBA C Clip NO

ANT7000, ANT7001 Swap Main PBA ANT7000, ANT7001

YES

Check the signal at NO

Swap Sub PBA L7008, L7009
L7008, L7009 Swap Main PBA AMP (U7000)

YES

Swap Receiver(Top SPK) Module

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-12. BT/WIFI

BT/WiFi does not work.

YES

Check ANT path Any damage.

YES
2.4G – ANT2002, ANT2003, L2010, C2043, C2109, Re-solder or change
L2007, F2000, C2032
5G – ANT3000, C3000, C3007, C9022 Antenna path components.

NO
No

Check RF path NO
2.4G – L2014, L2016 Re-solder or change
5G – L3000, F3000, L3001, C3003, C3004, RF path components.
U3000, C3002

YES

YES
Check U3001 Any damage Re-solder or change
(Crack, open, etc.) U3001 component.

NO
No

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-13. GPS

GPS is not working

YES

NO
Check GPS function ON Enable GPS Function in the setting

YES

NO
Check the ANT contact 1. Resolder or Replace the ANT1002, ANT1003
ANT2002, ANT2003 2. Replace the front

YES

Check (crack, open, etc) NO

L2010, C2043, C2109, L2007, F2000, C3061, Resolder or change the wrong element
L3019, L3018, C3063, U3008, C3065, C3062, (open, crack, deviation, etc)
L3021, F3003, L3022

YES

NO
Check 76.8MHz Clock at output Replace the OSC6000
OSC6000 PIN NUM3

YES

NO
Check the Voltage Replace the U3006 or U6002
L3014 = 1.8V

YES

NO
Check the Voltage
L3018 = 1.2V Replace the U3008

YES

Resolder or change U2001

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-14. NFC

NFC does not work.

YES

YES
Check ANT contact Any damage. Re-solder or change
ANT3008, ANT3009 Antenna path components.

NO

Check NO
NFC_CLK_19.2M Re-solder or change
(TP3013) U6002 component.
Is it ok?

YES

Check RF path
R3003, C3057, C3056, C3052, R3001, YES
Re-solder or change
L3015, C3053, C3054, C3058, L3016, Damaged components
C3059, C3060, R3002
Any damage
(Crack, open, etc.)

NO

YES
Check U3007 Re-solder or change
Any damage. U3007 components.

NO

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-15. FM Radio

FM Radio not working

YES

NO
Check the Earjack Change Earjack

YES

Check the Connector NO Change the SOC1002, SOC9000

SOC1002(SUB), SOC9000 (check SUB PCB, C to C FPCB)

YES

NO
Check the Voltage
Resolder or Replace the U1003(SUB)
L1021(SUB) = 1.8V

YES

NO
Check the below point
-SUB PCB : C1032,C1033,C1034 (a) Resolder or Replace the SUB PCB
-Main PCB : C3033,C3035,L3011, (b) Resolder or Replace the U3004
C3034

YES

Swap the Main PCB

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-16. Display

OCTA is still off after PWR ON

Yes

No
Check the connection of Reconnect SOC9000
SOC9000

Yes

Check the Voltage No

VDD_LCD_3P0 = 3.0V (C6061) Resolder or Replace U6002
VDD_LCD_1P8 = 1.8V (C6056)

Yes

Check the Voltage

ELVDD_4P6 = 4.6V (C9010) No
ELVSS_-4P4 = - 4.4 ~ 0V (C9011) Resolder or Replace U9000
ELAVDD_7P9 = 7.9V (C9000)

Yes

Replace Display module

Yes

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-17. Rear CAMERA (64M)

Rear Wide cam cannot operate

yes

no
Check cam connector on pba Reconnect SOC8002

yes

Check Voltage
C8006 : 1.1V
no
C8067 : 2.9V
Replace U8005
C8068 : 1.8V
C8011: 1.8V
C8008 : 2.8V

yes

Check CAM_MCLK pulse no

Change main pba
26Mhz (R8000)

yes

change rear cam module

yes

end

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-18. Front Cam (32M)

Front cam cannot operate

yes

no
Check cam connector on pba reconnect SOC8000

yes

Check voltage
no
C8003 : 1.05V Change U8005
C8002 : 1.8V
C8001 : 2.9V

yes

no
Check VTCAM_MCLK pulse
Change main pba
26Mhz (R8001)

yes

Change front cam module

yes

end

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-19. TSP

Touch Screen not work

Yes

No
Check the connection of Reconnect SOC9000
SOC9000

Yes

Check the Voltage

VDD_TSP_3P0 (C6105) = 3.0V
No
Replace U6003, U6002
VDD_TSP_1P8 (C6053) = 1.8V

Yes

Replace Display module

Yes

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-20. Motor

Motor doesn’t work

YES

NO
ANT6000, ANT6001 Check After reconnect, Check

YES

NO Replace
Voltage Check
C6025 = 3.3V ? U6007

YES

NO
MOT_EN Check
Replace UCP400
R6001 = 1.8V ?

YES

Replace motor

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-21. GSM850/900, WCDMA B5/8, LTE B5/8/12/17/20/26/28 TRX

It is not catching the channel

In normal condition

YES

Check ant path any damage NO Resolder or change

(RFS1001,ANT1003~ANT1004) Antenna path components
Is it ok? (SUB PBA)
)

YES

Check TRX path any damage NO Resolder or change

(RFC1000~U1000) TRX path components
Is it ok?

YES

NO Resolder or change
Check U1000 or U2001 path any damage
U1000 or U2001 TRX path
(Crack, open, etc), is it ok?
components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-22. GSM DCS/PCS, WCDMA B1/2/4, LTE B1/2/3/4/7/32/38/40/41/66 TRX

It is not catching the channel

In normal condition

YES

Check ant path any damage NO

Resolder or change
(RFS1002, ANT1006 ~ ANT1009)
Antenna path components
Is it ok? (SUB PBA)
)

YES

Check TRX path any damage NO

(RFC1001~U1000,U2007) Resolder or change
Is it ok? TRX path components

YES

Check U1000,U2007 or U2001 path any NO Resolder or change

damage U1010,U2007 or U2001 TRX path
(Crack, open, etc), is it ok? components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-23-1. GSM850/900, WCDMA B5/8, LTE B5/8/12/17/20/26/28 DRX [SM-A525F]

It is not catching the channel

In normal condition

YES

Check ant path any damage NO Resolder or change

(ANT2000) Antenna path components
Is it ok?
)

YES

Check DRX path any damage NO Resolder or change

(ANT2000~U2008) DRX path components
Is it ok?

YES

NO Resolder or change
Check U2008 or U2001 path any damage
U2008 or U2001 DRX path
(Crack, open, etc), is it ok?
components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-23-2. GSM850/900, WCDMA B5/8, LTE B5/8/12/13/17/20/26/28 DRX [SM-A525M]

It is not catching the channel

In normal condition

YES

Check ant path any damage NO Resolder or change

(ANT2000) Antenna path components
Is it ok?
)

YES

Check DRX path any damage NO Resolder or change

(ANT2000~U2008) DRX path components
Is it ok?

YES

NO Resolder or change
Check U2008 or U2001 path any damage
U2008 or U2001 DRX path
(Crack, open, etc), is it ok?
components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-24-1. GSM DCS/PCS, WCDMA B1/2/4, LTE B1/2/3/4/7/32/38/40/41/66 DRX [SM-A525F]

It is not catching the channel

In normal condition

YES

Check ant path any damage NO

Resolder or change
(ANT2002)
Antenna path components
Is it ok?
)

YES

Check TRX path any damage NO

(ANT2002~U2009) Resolder or change
Is it ok? DRX path components

YES

NO Resolder or change
Check U2009 or U2001 path any damage
U2009 or U2001 DRX path
(Crack, open, etc), is it ok?
components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair

8-4-24-2. GSM DCS/PCS, WCDMA B1/2/4, LTE B1/2/3/4/7/38/40/41/66 DRX [SM-A525M]

It is not catching the channel

In normal condition

YES

Check ant path any damage NO

Resolder or change
(ANT2002)
Antenna path components
Is it ok?
)

YES

Check TRX path any damage NO

(ANT2002~U2009) Resolder or change
Is it ok? DRX path components

YES

NO Resolder or change
Check U2009 or U2001 path any damage
U2009 or U2001 DRX path
(Crack, open, etc), is it ok?
components

YES

Change the board

YES

END

Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.