Samsung GT-S7262 Block Diagram
Level
8.
Block Diagram
8-1.
Repair
3
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.
Level3Repair
PCB Diagrams
8-2.
8-2-1.
Top
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.
Level3Repair
8-2-2.
BOTTOM
8-3
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
8-3-1.
Power On
Cell-phone can`t power on.
Check the Battery Voltage
it more than
Is
Power-on the phone and check
the power-on current
Check the ONKEY
TAC401
(
Yes
No
.
V?
3.5
mA
100
≥
)
No
Yes
Abnormal
If its voltage level is extremely low(under
And re-try to the power-on operation.
Charging the battery by TA.
Change the battery.
Change the FRONT LCD Assy.
or re-download binary
Change the TAC401
.
3.0
V),
Normal
Check the UCP300 output
voltage.
C338
(
Change PBA
END
Check the UCP300
Yes
Yes
1.1
≒
V)
If the output voltage is not satisfied with normal
No
condition, Change the UCP300
Each voltage level has
※
±10%
margin.
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.
Level3Repair
ON_SW
VDDLDO_2.2V
VDDARM_1.2V
VDDMEM_1.2V
4
6
8
9
3
4
4
3
3
C
C
C
6
6
0
0
0
0
0
0
2
2
1
1
1
1
1
1
C
D
T
Y
V
R
U
W
A
A
M
M
M
M
N
N
M
M
M
I
I
E
E
E
E
E
E
E
O
O
M
M
M
M
M
M
M
D
D
D
D
D
D
D
D
D
L
L
_
_
D
D
D
D
D
D
D
V
C
C
V
V
V
V
V
V
D
D
C
C
D
D
V
V
R415
TAC401
1005
NC
3
C408
5
0
0
1
ZD400
NC
NC
NC
4
5
6
12
S1
S2
NC
VSIM2_3.0V
VDDSD3_1.8V
VSIM1_3.0V
VDD_SD_3.0V
VCAM_IO_1.8V
TSP_3.0V
VDDSD3_1.8V
VDD_IO_1.8V
8
7
1
1
3
3
C
C
VDDCORE_1.1V
1
0
5
5
3
3
C
C
7
8
0
0
0
1
1
1
1
1
A
A
P
N
M
A
A
M
M
M
M
E
E
R
R
A
A
M
M
D
D
D
D
D
D
D
D
V
V
V
V
4
3
2
V
5
5
5
0
3
3
3
1
C
C
C
6
5
4
3
3
8
7
6
5
4
1
1
1
1
1
1
1
1
1
1
A
A
A
A
Y
Y
Y
Y
Y
Y
A
A
A
A
M
M
M
M
M
M
M
M
M
R
A
D
D
V
M
R
R
R
R
R
R
R
R
R
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
V
V
V
6
7
5
5
3
C
1
5
6
5
4
1
1
1
1
1
1
1
A
Y
V
V
V
W
A
E
E
M
M
M
M
R
R
R
R
R
R
O
O
A
A
A
A
C
C
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
8
5
5
5
3
3
3
C
C
C
1
1
0
9
1
1
1
2
1
1
V
V
U
U
W
E
E
E
E
E
R
R
R
R
R
O
O
O
O
O
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
0
0
1
1
0
9
2
0
1
1
2
1
2
2
1
1
1
2
T
T
T
T
P
P
N
R
R
E
E
E
E
E
E
E
E
E
E
R
R
R
R
R
R
R
R
R
R
O
O
O
O
O
O
O
O
O
O
C
C
C
C
C
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
V
V
V
V
VDD_IO_1.8V
0
1
1
9
8
7
6
5
4
1
2
1
1
1
1
1
1
1
L
L
L
L
L
L
N
M
M
E
E
E
E
E
E
E
E
E
R
R
R
R
R
R
R
R
R
O
O
O
O
O
O
O
O
O
C
C
C
C
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
V
V
V
VDD_IO_1.8V
VCAM_IO_1.8V
VDD_2.5V
4
0
3
C
0
9
2
1
3
3
C
C
VDD_IO_1.8V
0
6
2
3
5
1
6
1
1
1
F
E
A
L
L
A
A
F
E
N
N
N
I
I
I
N
R
_
_
_
D
3
1
O
C
I
D
D
D
I
C
V
S
S
D
D
D
D
D
D
D
D
V
V
V
V
3
2
1
2
2
3
3
C
C
2
6
3
C
9
1
0
0
1
1
2
1
A
L
L
L
A
2
N
N
N
I
I
I
O
_
I
_
_
D
O
M
M
I
D
C
C
M
V
L
L
A
D
D
C
D
D
D
V
V
D
V
5
4
2
2
2
3
3
3
C
C
C
VBAT
VBAT
0
9
6
5
3
3
C
C
1
1
2
2
4
2
2
1
2
A
Y
A
0
1
O
O
I
I
D
D
D
D
V
V
1
1
4
2
3
3
3
2
3
3
2
F
C
D
J
P
N
N
N
A
A
A
6
6
6
D
D
L
A
A
3
3
3
L
P
P
D
D
D
D
D
P
T
T
V
V
_
D
D
D
A
A
A
A
D
V
V
V
_
B
B
_
I
I
A
A
A
D
V
V
S
S
V
C
D
A
M
M
7
6
5
0
0
0
3
3
3
C
C
C
L
VBUS_5V
VBATVBAT
R
T
C
_
B
I
V
1
6
3
C
5
6
3
8
C
0
3
R
5
4
4
0
4
8
2
U
D
T
A
B
B
V
3
7
7
8
3
3
3
3
3
3
2
2
2
E
E
E
H
H
T
U
D
D
T
T
A
A
B
V
V
C
P
A
A
A
A
A
A
V
E
R
D
T
A
B
V
E
G
D
K
R
S
B
S
E
H
C
I
L
D
N
N
C
U
V
P
V
E
E
V
B
K
S
S
_
I
_
T
T
A
A
B
B
V
V
VCAMC_1.8V
TSP_3.0V
VDDRF_2.85V
8
0
9
1
0
0
1
1
3
3
3
3
C
C
C
C
8
6
3
C
5
4
0
9
5
5
5
5
5
5
5
0
2
2
3
C
A
3
2
2
3
2
2
3
2
3
E
D
D
D
L
C
N
D
T
E
P
K
R
A
A
A
A
A
1
0
0
T
2
8
T
B
D
A
D
V
V
U
U
S
M
M
M
M
I
I
1
1
S
U
O
O
A
A
S
S
B
B
D
_
_
D
C
C
D
D
3
1
M
M
D
D
D
D
D
D
D
D
V
M
M
V
V
V
D
D
S
S
C
C
V
V
D
D
D
D
D
D
D
D
V
V
V
V
VDD_IO_1.8VVCAMA_2.8V
VDD_3.0V
VDD_IO_2.8V
VDD_2.5V
4
2
3
1
1
3
3
C
C
9
6
3
C
7
2
7
8
7
2
3
2
2
2
D
T
V
N
M
A
F
V
T
A
E
3
_
R
O
R
D
D
D
O
M
D
D
D
C
M
V
V
V
M
A
A
C
C
D
D
D
V
D
V
6
5
1
1
1
3
3
3
C
C
C
VDDLDO_2.2V
VREF
5
3
3
C
6
7
6
6
3
3
3
C
C
6
3
C
0
7
3
C
7
7
2
2
E
R
A
8
8
V
V
1
2
D
D
D
D
V
V
0
0
3
L
2
1
7
7
3
3
C
C
5
5
5
5
3
5
5
7
5
4
2
3
2
2
3
2
3
2
3
J
H
B
K
M
T
Y
V
R
U
A
A
A
A
5
F
U
A
B
B
O
O
O
O
O
V
E
F
P
V
B
A
D
D
D
2
E
D
D
D
D
V
V
D
R
L
L
D
L
L
D
D
D
V
_
_
_
_
D
D
D
D
X
X
X
V
V
V
V
V
L
L
L
R
A
A
A
A
D
T
A
B
V
VDDARM_1.2V
VDDMEM_1.2V
VBAT
VBAT
7
6
3
3
3
3
C
C
1
0
4
4
3
3
C
C
2
1
0
0
3
3
L
L
6
3
6
6
2
2
2
J
H
K
A
A
A
O
O
D
D
L
L
_
_
V
V
R
R
D
D
T
T
A
A
B
B
V
V
0
3
2
1
2
4
3
3
3
3
3
3
3
3
3
J
J
J
K
H
K
K
K
A
A
A
A
A
A
A
A
M
M
M
M
M
M
M
M
M
E
E
E
E
E
E
R
R
R
A
A
A
M
M
M
M
M
M
_
_
_
_
_
_
_
_
_
X
X
X
X
V
V
V
X
X
L
L
L
L
L
L
R
R
R
D
D
D
T
T
T
A
A
A
B
B
B
V
V
V
VBAT
VDDCORE_1.1V
VBAT
9
8
3
3
3
3
C
C
2
4
3
C
3
0
3
L
1
0
9
8
7
1
0
3
J
A
9
8
7
3
3
2
2
2
3
2
2
2
J
J
J
J
H
K
K
H
K
A
A
A
A
A
A
A
A
A
E
E
E
E
E
E
M
M
M
R
R
R
R
R
R
R
R
R
O
O
O
O
O
O
A
A
A
_
_
_
C
C
C
C
C
C
_
_
_
_
_
_
V
V
V
X
X
X
V
V
V
R
R
R
L
L
L
R
R
R
D
D
D
T
D
D
D
T
T
T
T
T
A
A
A
A
A
A
B
B
B
B
B
B
V
V
V
V
V
V
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
Initial Failure
Yes
Re-download latest SW on the
Check the oscillator clock waveform.
mobile phone.
Abnormal
MHz:OSC100
26
Normal
Change UCP300
Abnormal
Change PBA
Abnormal
Check the OSC100.
Crack, open etc.)
(
Check the output clock waveforms and frequency.
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
3
4
21
OSC100
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.
Level3Repair
8-3-3.
No Service
No service
Yes
Check memu setting
Menu→applications→setting→wireless and network
mobile networks→network mode→setting is auto mode
Check the Main Antenna
not-exist or damaged
No
Check the RFS100, L100, C103,
C102,C100,C101,L102,L101,C104 is
well soldered
→
?
Yes
Replace Main Antenna
No
C102,C100,C101,L102,L101,C104 correspondingly.
Re-solder RFS100, L100, C103,
Yes
Check C105,C106,C107>=3.0 V?
Abnormal
Change the PBA
Yes
END
No
Replace the U100
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
DCS_RX_N
DCS_RX_P
PCS_RX_P
PCS_RX_N
GSM850_RX_N
GSM850_RX_P
GSM_RX_N
GSM_RX_P
ANT100
L103
DCS/PCS_TX
GSM850/900_TX
C118
L105
C120
L107
C122
L108
L109
ANT101
L100
C102
C123
C124
C125
C127
RFS100
C100
21
COMMON
ANT
G
C103
C109
1005
C112
C111
F100
6
OUT
7
OUT
1
IN
OUT
8
OUT
9
G
G
G
G
G
L106
0
3
2
5
4
1
F101
6
OUT
7
OUT
1
IN
8
OUT
9
OUT
G
G
G
G
G
L110
0
4
3
5
2
1
C101
G
3
4
L104
C114
C113
C119
C126
L101
L102
VBAT
C104
C108
15
VBAT1
3
VBAT2
6
RFIN_HB
7
RFIN_LB
25
RX1
26
RX2
D
D
D
D
D
D
D
D
D
N
N
N
N
N
N
N
N
N
G
G
G
G
G
G
G
G
G
1
8
2
7
8
6
9
4
5
3
1
1
1
1
VBAT
C106
C105
2
2
T
N
A
U100
D
D
D
D
D
D
D
N
N
N
N
N
N
N
G
G
G
G
G
G
G
9
0
8
9
0
1
3
1
3
2
2
2
2
2
C107
14
ENABLE
12
SW1
10
TX_EN
11
VRAMP
D
D
D
D
D
D
D
N
N
N
N
N
N
N
C
C
G
N
G
G
G
G
G
G
N
2
5
1
6
3
7
4
4
3
3
3
3
3
2
3
2
C110
TX_Module
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.
Level3Repair
8-3-4.
Sim Part
Insert SIM card
Yes
Check SIM500/SIM501 to
soldering well
Yes
Check the SIM Voltage.
C513,C517)
(
>= 3.0?
Yes
END
VSIM1_3.0V
No
No
Resolder or replace SIM500/SIM501
Change to the new SIM card.
If it doesn`t still work SIM card after changeing
the SIM card, Check the UCP300(Crack etc)
VSIM2_3.0V
SIM500
VCC 1
CLK 3
GND 5
IO
GND
GND
GND
GND
GND
GND
5
0
0
1
C520
C512C511
R509
NC
SIM2_RST
SIM2_CLK
SIM2_IO
R508
NC
2RST
6VPP
7
8
9
10
11
12
13
5
0
0
1
C513
5
0
0
1
C514
C515
5
0
0
1
C516
SIM1_RST
SIM1_CLK
SIM1_IO
SIM501
RST 2
VPP 6
IO
GND
GND
GND
GND
GND
GND
1VCC
3CLK
5GND
7
8
9
10
11
12
13
5
0
0
1
C517
5
0
0
1
C518
C519
8-10
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
8-3-5.
Charging Part
TA/USB Insert
TA/USB is normal?
VBUS_5.0V_IF(C414)
Battery is Charging?
Yes
Yes
Yes
Yes
=5.0V?
No
No
No
Change TA or USB
Replace C414
Resolder or Replace U401
END
8-11
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
VDD_IO_1.8V
IFC400
VBUS_5.0V_OVP
VBUS_5V
JIG_ON_JTAG
1
1
2
2
3
3
4
4
5
5
6
S1
7
S2
8
NC
9
NC
10
NC
11
NC
12
NC
13
NC
R421
R422
R423
R424
2
0
C414
4
G
G
D
A
A
T
T
J
J
_
_
2
2
D
D
X
X
T
R
R420
5
3
6
4
0
0
0
0
4
4
4
4
D
D
D
D
USB_D_N
USB_D_P
TXD2
RXD2
3
1
Q400
2
JIG_ON
R406
5
0
4
C
6
0
4
C
R410
R411
R408
1
VIN
2
ISET
3
GND
4
LDO
5
IEOC
U401
RT9532HGQW
D
N
G
1
1
CHGSB
EN|SET
BATT
R401
R402
10
9
PGB
8
7
GND
6
R409
CHG_DET
CHG_STATE
D400
CHG_EN
FG_CHG
VBAT
8-12
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
8-3-6.
Microphone Part
Check microphone function
in voice call receiver mode
or in Voice Recording mode
Check the main MIC500 is
placed for any damage
Check the voltage at
L511
Yes
Yes
=2.8V
No
No
Resolder or replace the main MIC500
Resolder or replace UCP300
Yes
Check component soldering
statuses of C539, C540, L512
Yes
END
No
Resolder or replace C539, C540,L512
8-13
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
GND
6
GND
5
PWR
4
GND
3
GND
2
OUT
1
MIC500
VMIC_BIAS_2.1V
L511
L512
C531
C534
MIC_OUT_N
MIC_OUT_P
2
0
5
D
C536
C539
C540
R526
8-14
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
8-3-7.
Speaker Part
Play MP3 with maximum volume level.
SPK Module is Contacted?
Check speaker function.
Yes
Check SPK500 PAD and
No
Check the signals on
L500, L501
Yes
No
Contact SPK500 and SPK Module well
Resolder or replace C501, C500, ZD500,
ZD501, L500,L501
Yes
Replace speaker
8-15
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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