Samsung S5560i Troubleshooting 6
Level
8.
Block Diagram
8-1.
Repair
3
8-1
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PCB Diagrams
8-2.
8-2-1.
Top
(2010.12.17
Rev
0.5)
8-2
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8-2-1.
Bottom
8-3
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Flow Chart of Troubleshooting
8-3.
presetting methods for checking TP
※
GND&TP(exp. VBAT=
-
look over the coming out signal.
-
TA300
,
C303
using Oscilloscope
)
GND
Oscilloscope
←
TP(Test Point)
8-4
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Multi-meter
←
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Checking the TP(test point) using Multi-meter
←
EX) to look up the TP, shunt Cap.-if checking the GND, you can listen"beep"
-
if checking the Signal, you can't listen it.
8-5
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LOGIC
8-3.
8-3-1.
Power On
Power switch on
NG
Check the current
consumption
>= 100
mA?
Yes
Check the battery
voltage
>= 3.45?
Yes
Check the clock at
OSC300
=32
kHz
Yes
C220(1.28V_VCORE)=1.28V?
C211(3.0V_DIG)=3.0V?
C214(1.8V_MEM)=1.8V?
C221(2.7V_VRF)=2.7?
C224(1.3V_VRF)=1.3V?
C208(1.3V_VCXO)=1.3V?
NO
Download
NO
Change the battery
NO
?
Resolder OSC300
NO
Check the U300
Yes
Check the clock
MHz
26
?
Yes
Check the initial operation
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NO
Check the clock generation circuit
OSC200
8-6
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VDD_ANA_3V0
VDD_CAM_A_2V8
VDD_ANA_1V2
VDD_VRF_1V3
VDD_VRF_2V7
VDD_USBOTG_2V5
VDD_LCD_2V9
VDD_USB_NVRAM_3V3
VDD_CAM_IO_1V8
VDD_CAM_AF_2V8
VDD_MOT_3V0
VDD_TSP_3V0
VDD_CORE_1V28
VDD_MEM_1V8
VDD_CAM_CORE_1V2
VDD_AMP1_3V0
VDD_SD_3V0
VDD_DIG_3V0
VDD_VCXO_1V3
VDD_SIM_3V0
LDO_EN4
SCL
SDA
C331
C330 C329C320
C346
C323
C319 723C523C
C318
C322
VBAT
VDD_MEM_1V8
C300
C303
TA300
C305
L300
L301
L302
C324
C328
C326
9
3
J
C
T
T
A
B
B1
C304
IN1
B2
IN2
C2
IN3
C5
IN4
C6
IN5
C8
IN6
D7
IN7
B3
INLV
B8
ALDO1
B7
ALDO2
C3
LVLDO1
C4
LVLDO2
A8
RFLDO1
A7
RFLDO2
B4
MSLDO1
B6
MSLDO2
F9
AUXLDO1
F8
AUXLDO2
E8
AUXLDO3
E7
AUXLDO4
E6
AUXLDO5
C1
LX1
A2
LX2
E1
LX3
D2
FB1
A3
FB2
F2
FB3
A6
HCLDO1
A5
HCLDO2
B5
IOLDO
F6
LCLDO
A4
SIMLDO
F3
I2CCLK
F4
I2CDAT
F7
EN5
E5
EN4
D
N
G
9
9
E
G
C332
VDD_MEM_1V8
1
F
D
D
D
D
V
V
P
P
H
U300
D
D
N
N
G
G
1
J
VBUS_IF
C301
2
8
7
9
C302
D
C
D
G
L
D
S
IN
V
D
U
O
V
B
C
V
V
J7
COMN1
J8
COMP2
J2
C1N
H2
C1P
H9
DN1
J9
DP2
H1
OUTN
G1
OUTP
H3
INA1
F5
INB2
H7
UT1
G7
UR2
H8
UID
H6
SL1
H5
SR2
J6
HPL
J5
HPR
G3
PC1
E4
PC2
A9
XIN
B9
XOUT
G5
INB1
G4
INA2
G6
MIC
D3
IRQB
G8
BC
D4
C313
REFBP
D5
RESETB
H4
VBIAS
E3
PWRONB
D6
32KHZ
1
NC
2
NC
3
1
2
S
D
D
D
S
N
N
N
V
P
G
G
G
P
P
P
H
2
1
1
4
J
E
A
D
C333C321C317C316
TP_USB_DM
TP_USB_DP
TP_USB_TXD
TP_USB_RXD
TP_PMU_IRQ
DM_IF
DP_IF
C306
USB_DM
USB_DP
C307
PMU_IRQ
C315
RST_BB
TA301
SPK_N
SPK_P
EAR_L
AMP_N
FM_R_OUT
USB_TXD
USB_RXD
JIG_ID
R301
R302
R303
C314
EAR_SPK_L
EAR_SPK_R
PC
BT_REQ_CLK
C310
OSC300
C311
FM_L_OUT
AMP_P
EAR_R
ONKEY
32K_CLK
8-7
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8-8
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8-3-2.
LCD Working
Power Switch On
LCD Display
On?
Yes
NO
LCD FPCB
connector is co
rrectly connecti
ned?
Yes
F400, F401,
F402, HDC401
Correctly moun
ted?
NO
NO
correctly connect
F400, F401,
F402, HDC401
Resolder
,
Yes
LCD
Replace
Yes
C421
LED_P_18V=18V?
NO
Replace U402&Check
neighboring circuits
8-9
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8-10
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8-11
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8-12
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8-3-3.
TSP
Operate TSP
NG
Check
TSP Connecting
YES
Change TSP Module
No Problem? Change main PBA
NO
Reconnecting TSP
NO
YES
END
8-13
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