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Level
8.
Block Diagram
8-1.
GGOOYYAA ((WWIIFFII))
Repair
3
MMEEMMOORRYY
PPOOWWEERR
&&
AAUUDDI IOO
EAR_MIC_BIAS_2 .8V
EAR_MIC
MAIN_MIC
SPK
EARSPK
CCOONNNNEECCTTOORR
LLCCDD && TTSSPP
CCAAMMEERRAA
V_BAT_SW
[RP152L002B- TR]
RCV
SPK_N/P
CONNECTOR
CONNECTOR
DDIISSPP__33VV33
LDO
VVRREEGG__11VV88
VV__MMEEMM__AA__22VV8 8
VDD_TSP_2V8
VDD_DIG_1.8V
V_MEM_A2V8
V_SD_3V3
V_MMC_3 V3
VDD_S IM_3V0
V_RAMP _2V8
V_USB_3 .1V
LVDS_1V8
VCC3V3_WLAN
VDD_SEN_ 3V3
LVDS_1V2
V_GPS_1.8V_PMU
EAR_MIC_BIAS_2.8V
VCORE_MAI N_1.2 V
VREG_1V8
VREG_1 .2V
V_3G_DI G_RF
RCV_P/ N
EAR_MIC_N/ P
MAIN_MIC_N/P
MIC_BIAS_1.6 5V
EAR_ADC_3.5
EARSPK_L/ R_3. 5
L_DET
GND_DET
IF
VV__BBAATT__IIFF
BATTERY
VV__BBAATT__CCEELLLL
LCD
TSP_VENDOR(1:2)
VV__BBAATT__SSWW
LOAD SWITCH
[ET3148A]
V_BAT_SW
BAT SWITCH
[ET3153]
LLVVDDSS__11VV22
LLVVDDSS__33VV33
LLVVDDSS__11VV88
LVDS_RX_(0:3)_P/ N_F
LVDS_CL K_P/N _F
LED_VOUT_19.8V
TSP
VV__CCAAMM__IIOO__11VV88
VV_ _CCAAMM__AA__22VV88
8GB eMMC
[ SDIN7DU2-8G- 944]
VVRREEGG__11VV88
L
D
O
B
PMIC
U
[PM820]
C
K
Audio
I/F
IF_DM/DP/ ID
VBUS_5V_IF
VV__MMMMCC__33VV33
VV__SSDD__33VV3 3
VVRREEGG__1 1VV88
[ CSSP- AQFDN120- 6534VT]
VVMMBBAATT
LED_K
STBYB
TX(00:29)
RX(00:17)
VVRRE EGG__11VV88
VVDDDD__TTSSPP__22VV88
2M
CAMERA
VVRREEGG__1 1..22VV
LVDS IC
32.768MHz
HIFI_SDATA_IN/OUT/ SYNC/BITCLK
PWR_KEY
TEMP_CHAMBER
TEMP_AP
VVRREEGG__11VV88
CHG_CUR
[ SMB328AET]
VVBBUUSS__MMUUIICC
JIG_ON_N
[ RT8973WSC]
CONNECTOR
LCD BLIC
[ RT8511B]
TOUCH IC
[ BT532]
MC2_DAT(0:7)
MC2_CLK
MC2_CMD
XXTTAALL
CLK_32K_8777
PMIC_32KHZ_OUT
CLK_32KHZ_AGPS
PMIC_RST_OUT
PCM_TXD/RXD/SYNC/CLK
VLT_LVL_SEL1/2
SYS_CLK_EN
PMIC_INTN
PMU_SCL/ SDA
CODEC_INT
TThheerrmmiissttoorr
TThheerrmmiissttoorr
Charger IC
VVRREEGG__1 1VV88
VV__BBAATT__SSWW
MUIC+OVP
SD
MIPI_LCD_D(0: 3)P/ N
TSP_LVDSSDA/SCL
LCD_BACKLIGHT_PWM_QL
LED_BACKLIGHT_RESET
TSP_LVDS_SDA/SCL
5M_I2C_SCL/SDA
MIPI_5M_D0 :1_P/ N
MIPI_5M_CLK_P/N
5M_CAM _MCLK
5M_CAM_RSTN/ STBY
V_BAT_SW
CHG_SDA/SCL
MUIC_DM/DP
MUS_SDA/SCL
MUIC_TXD/RXD
SD_D(0:3)
SD_CMD
SD_CLK
SD_DET_N
QCLK_OUT
LVDS_RST_N
TOUCH_IRQ
CHG_STAT
MUIC_INT
eMMC/MMC
4.5 SD 3.0
I/F
PMU I/F
HS USB 2.0
Dual Core 1. 2 GHz
8Gb POP LPDDR2
[ H9TKNNN8JDAPLR- NGHR]
eMMC/MMC
4.5 SD 3.0
I/F
LCD MIPI
DSI-4
TSP
I2C
MIPI CSI- 4
Main CAM
AP / CP
[PXA986]
+
WLAN/ BT
A- GPS
UART
Keypa d
Sensor
RRFF PPAARRTT
CLK_32KHZ_AGPS
HOME KEY
3G_CLK_26MHZ_WIFI_IN
VVDDDD__WWIIFFII__11..88VV
BT/WIFI
[ 88W8777]
VV__GGPPSS__11..88VV
VOL KEY
PWR KEY
VVCCCC33VV33__WWLLAANN
GPS
[ 88L2000]
RF_CNTL0_P/N
TTCCXXOO
26MHz
VVRREEGG__1 1VV88
WLAN_RF
BT_RF
SAW
[SFHG89DA00 2]
GPS_LNA_EN
BT/WIFI
SP2T
[ RDASW25]
LNA
[RDALN16]
Band pass
Filter
(2.4GHz)
SAW
[SFHG89DA002]
Antenna
MMOOTTOORR
&&
KKEEYY
GPS
BT/WIFI
Antenna
XXTTAALL
26MHz
CLK_32K_8777
BT_PCM_TXD/ RXD
BT_PCM _CLK/ SYNC
WLAN_SD_DATA(0:3)
I/F
WLAN_SD_CL K/CMD
WLAN_WU_HO ST
HOST_WU_WLAN
WLAN_PDn
GPS_CAL_CLK
AP_AGPS_RESETn
AP_AGPS_ONOFF
GSP_TXD/RXD
VOL_UP / DOWN
PWR_KEY
I/F
HOME_KEY
SSEENNSSOORR
ISC
SEN_SCL/ SDA
ACC_INT
ACCELERATOR SENSOR
[ BMA254]
VVDDDD__SSEENN__33VV33
VVRREEGG__11VV88
8-1
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’swritten authorization is strictly prohibited.
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PCB Diagrams
8-2.
8-2-1.
Top
Level3Repair
8
9
8
3
1
1
C
R
5
6
0
1
0
0
1
1
3
3
3
3
R
R
R
R
TP_WLAN_WU
TP_HOST_WU
TP_PCM_RXD
TP_PCM_TXD
TP_WIFI_CLK_EN
R409
N
_
1
D
_
M
5
_
P
T
TP_5M_D0_N
TP_5M_CLK_P
TP_5M_STBY
8-2-2.
TP_5M_D1_P
P
_
0
D
_
M
5
_
P
T
TP_5M_CLK_N
N
T
S
R
_
M
5
_
P
T
Bottom
8-2
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’swritten authorization is strictly prohibited.
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Level3Repair
Flow Chart of Troubleshooting
8-3.
Equipments
Oscilloscope
Power Supply
Digital Multimeter
driver, ESD Safe Tweezer
+
8960 &
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’swritten authorization is strictly prohibited.
Spectrum Analyzer
8-3
Soldering iron
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Level3Repair
8-3-1.
Power On
Device can`t power on.
Check the Battery Voltage
it more than
Is
Check the power key
open, etc)
(
Power-on the phone and check
the power-on sound is ok?
Yes
No
Yes
3.4
V?
.
No
Abnormal
Yes
Charging the battery by TA.
Change the power key
And retry to the power-on operation.
Change the FRONT ASSY
Check the U701 output voltage
C427,C428
(
C430
>1.2
Check the Clock OSC400
Is that frequency32KHz?
check the initial operation
END
>1.8
Yes
Yes
V,
V)
No
No
If the output voltage is not satisfied with normal
condition, Change the U401
Change the OSC400
If OSC400 does not still work, Change the U401
This problem is internal oscillator of U401
Test condition(Oscilloscope setting)
※
us.div(time division)
:20.0
8-4
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’swritten authorization is strictly prohibited.
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Level3Repair
C
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8-5
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’swritten authorization is strictly prohibited.

Level3Repair
8-3-2.
Initial(Lock up)
Initial Failure(Lock up when booting)
Re-download SW the phone.
Check the AP Reset
Check the oscillator clock waveforms.
32.768
OSC400 is operating when
phone is not in sleep mode
Download success
RESET_INn
R340 or R339)
(
Yes
KHz:OSC400.
No
No
Abnormal
If Phone do not go download mode, boot code area
of EMMC is damaged.
It need to change the UME300(EMMC)
Change the UCP300/change the PBA
Check the OSC400.
Crack, open etc.)
(
Check the output clock waveforms and frequency.
Test condition(Oscilloscope setting)
※
us.div(time division)
:20.0
@ 32.768
Khz
Normal
Change UCP300, U401
Abnormal
Change PBA
END
8-6
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’swritten authorization is strictly prohibited.

Level3Repair
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8-7
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’swritten authorization is strictly prohibited.
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Level3Repair
8-8
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’swritten authorization is strictly prohibited.

Level3Repair
8-3-3.
Charging Part
TA/USB Insert
Charging Sequence Start
VBUS_5V_IF=5V(C454)
VBUS_MUIC=5V(C401)
Battery is Charging?
Yes
Yes
Check the
Yes
Yes
No
No
No
Check CURRENT_TEST=5V,
or may not connected TA/USB
Resolder or Replace U402
Resolder or Replace L408, U400
END
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8-9
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’swritten authorization is strictly prohibited.