Samsung E730 Service Manual Trouble Shooting
7. Flow Chart of Troubleshooting
7-1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.4V
Yes
Yes
Check the Clock at
R401=32KHZ
Yes
C424(+VDD_IO_LOW) &
C423(+VDD_IO_HIGH) = "H"?
Yes
No
Change the Battery
No
Check the PMU related to VINTC405(VINT) = 2.7V?
No
Resolder OSC400
No
Check the related circuit
C402(+VDD_GSM_CORE)
= 1.8V?
Yes
Check for the clock at C303
= 26MHz
Yes
Check the initial op eration
Yes
END
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No
No
7-1
Check the +VDD_GSM_CORE circuit
Check the clock generation circuit
(related to U100)
Flow Chart of Troubleshooting
ONKEYN
C405
OSC400
CC7V-T1A
C411
Typical 3.7V
+VDD_RX_TX
+VCC_SYN
+VDD_IMAGE
+AVDD_HFA
+VDD_IO_HIGH
+VDD_IO_LOW
R402
C407
VBAT
+AVDD
V400
R403
R404
C410
C412
C414
C415
C416
C422
C424
C425
C406
C408
SIMD3VBAT
SIMCKCD
_SIMRSCD
1
C409
SIMVCC
SIMIOCD
_REC1
BU_RST
2.9V
37
SCP
38
SCN
39
D3VDD
40
41
42
43
44
45
SIMEN
46
GPO3
47
GPO2
48
GPO1
49
GND
50
GND
51
GND
52
GND
53
NC
54
NC
C413
R405
V401
TP400
+VDD_SLEEP
1.8V
+VDD_IO_LOW
1.8V
SIM_VCC
SIM400
SIM_IO
SIM_CLK
1
6
2
5
3
SIM_RST
C417
C418
C419
C421
C420
4
G78GG
G
910
AUX_ON
SCL
SDA
32KHz_DIGIT
PON_TX
REF_ON
SIMRST
SIMCLK
POS
C426
NEG
31
32
29
30
27
26
25
28
OSCI
REFC
OSCO
_ONKEY
24
RF2VDD
23
RF12VBAT
22
RF1VDD
21
D1VDD
20
LPD1VBAT
19
LPVDD
18
HCVBAT
17
HCVDD
16
D2VDD
15
IOD2VBAT
14
IOVDD
13
_REC2
_RSTHC
MICBIAS
11
10
12
C423
34
33
36
VINT
35
VBAT
VCHG
VSAVE
CPVDD
CPVBAT
CHGDRV
CHGCUR/BATMAX
U400
_SIMRSHC
SIMIOHC
_IRQ
9
SDA
SIMCKHC
PWREN16PWREN2
SCL
CLK32K
7
3
8
5
2
4
MIC_BIAS
2.15V
RSTON
IT_PMU
SIMIO
R406
26M_CLK
C312
+VCC_SYN
R313
R315
+VCC_SYN
U302
5
1
VCC
NC
2
INA
3
4
GND
OUTY
R314
C315
26M_DIGIT
D_REF_CLK
7-2
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7-2. Initial
Flow Chart of Troubleshooting
Initial Failure
Yes
Q300 pin 4 (RSTON) ="H"
Yes
Is U200 R214, R215
OK?
Yes
Check the 16bit data signal
& memory CE
Yes
END
No
Check the circuit related to reset
No
Check the U200
7-3
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Flow Chart of Troubleshooting
+VDD_GSM_CORE
+VDD_GSM_CORE_C
+VDD_IO_LOW
R201
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
2
K8
J18
E10
E12NCE13
E18
D14
B10
NC
NC
NC
NC
NC
NC1NC
A14
CKI
L15
MCLKSEL
B16
XIN32K
V16
CLK32O
L14
GPIOB11
B15
XOUT32K
G12
RSTBB
U16
RSTEXT
A10
IO0
A11
IO1
B8
IO2
D9
IO3
E7
IO4
D10
IO5
B7
IO6
E8
IO7
G8
IO8
G7
IO9
A8
IO10
D8
IO11
A7
IO12
B9
IO13
A6
IO14
B6
IO15
J7
ADD0_BE0
J8
ADD1_BE2
A9
IO16
A3
IO17
A2
IO18
D1
IO19
A1
IO20
B2
IO21
A4
IO22
B5
IO23
D4
IO24
D5
IO25
B4
IO26
C1
IO27
E4
IO28
E5
IO29
B3
IO30
E6
IO31
A5
ADD18
B1
ADD19
F1
ADD20
E1
ADD21
F4
ADD21
F5
ADD23
G4
WE_E
E2
OE_R_W
K4
CS3
H5
CS1
G2
CS0
J5
BE1
H4
GPIOA8
H7
ADV
L7
GPIOA18
J11
GPIOA12
R1
GPIOB5
P1
GPIOA16
P5
GPIOA19
P7
GPIOB8
R4
GPIOB9
V1
GPIOB10
M5
GPIOA0
U1
GPIOA13
K7
GPIOA14
L8
GPIOA15
K11
GPIOA20
TP222
F2
GPIOB2
TP223
J4
GPIOA7
U4
GPIOA6
A16
KROW0
A18
KROW1
C17
KROW2
B17
KROW3
A17
KROW4
D18
KCOL0
C18
KCOL1
D17
KCOL2
E17
KCOL3
B18
KCOL4
HDP2
HDP0
HDP1
HDP3
HDP4
L12
V17
P15
P18
U15
N17
PIPESTAT(2)
PIPESTAT(0)
PIPESTAT(1)
TRCPKT(0)
TRCPKT(1)
NC
HDP5
HDP6
J14
TRCPKT(2)
TRCPKT(3)
HDP7
R14
TRCPKT(4)
RSTRTC
HDP8
P14
R15
TRCPKT(5)
TRCPKT(6)
H17
HDP9
V15
TRCPKT(7)
BBPWR
HDP10
U6
M4
B11
A13
A15
M15
VDDC
VDDC
VDDC
VDDA2
VDDBB
VDDRTC
HDP11
HDP12
TCKL5TDO
TMS
TDI
TRST
RTCK
L4
K5
F18
V14
N15
G10
G11
+VDD_IO_LOW
L200
+AVDD
R7
C2
U10
P12
VDDC
VDDC
VDDE1
VDDCLK
+VDD_IO_HIGH
+VDD_IO_HIGH_C
+VDD_USB
R200
U2
N2
H9
H2
E9
D6
M9
T17
T18
J12
E14
G15
VDDE1
VDDE1
VDDE1
VDDE1
U11
VDDE2
VDDE2
VDDE2
VDDE2
VDDE2N4VDDE2
VDDE1
VDDE1
VDDE1
VDDE1
U200
GNDC
GNDC
GNDC
JSEL
GNDC
GNDE
GNDC
GNDE
U5
D2
M2
R12
K12
K14
B12
A12
GNDEP4GNDE
GNDE
GNDE
GNDE
GNDE
GNDE
GNDE
GNDE
GNDE
GNDE
P2
J2
D7
G9
F15
E15
M10
H10
D11
D12
+VDD_IO_LOW
C200
+AVDD
+AVDD_HFA
N5
G5
V13
R10
H12
H15
G18
BE3
TXD1
VDDE4
VDDE3
VDDREF
GNDE
GNDE
GNDE
GNDE
V6
U3
P17
U12
R18
VDDVB
VSSBB
M8
GPIOA11
VDDVBO
M7
GPIOA1
P10
GPIOA2
L10
GPIOA10
H8
GPON0
M1
GPON1
R13
RFSIG0
M12
RFSIG1
M11
RFSIG2
V5
GPIOA3
P9
GPIOA4
L11
GPIOA5
R11
RFSIG6
P11
RFSIG7
T2
GPIOA21
R2
GPIOA22
R5
GPIOA23
U18
RFCLK1
R17
RFDO1
G1
GPIOA9
V18
RFEN0
H1
RESET
V10
MCLK
R9
AUXDAC1
R8
AUXDAC2
V11
AUXDAC3
C217
U14
VREF
V12
MICBIAS
V8
QN
V7
QP
U8
IN
U7
IP
J1
AUXADC1
K1
AUXADC2
K2
AUXADC3
L1
AUXADC4
L2
AUXADC5
J17
HFR1
H18
HFR2
K15
EAR1
J15
EAR2
M18
MICN
N18
MICP
L17
AUXMICN
M17
AUXMICP
K18
ANL
L18
ANR
D13
FSC
E11
DCL
B13
DD
B14
DU
N1
GPIOA24
T1
GPIOA25
L9
GPIOA26
U17
SCL
M14
SDA
TP221
P8
GPIOA30
P6
GPIOA27
R6
GPIOA28
G17
SIMCLK
D15
SIMIO
N14
SIMPWR
F17
SIMRST
V2
GPIOA17
V3
GPIOA29
V4
GPIOA31
F14
USBCN
G14
USBDM
H11
USBDP
VSSA4
VSSCLK
VSSREF
VSSA5
VSSVBO
VSSVB
V9
U9
P13
U13
K17
H14
TP225
R218
+AVDD
C213
C214
TP200
TP202
TP203
R203
TP206
TP207
TP208
TP209
R206
TP213
TP215
TP224
TP226
TP227
TP228
TP229
TP230
TP231
TP232
RSTON
TP233
R220
C201
MES_BATT
VF
TEMP_PRODUCT
EAR_ADC
HFR_P
HFR_N
EAR1
EAR2
RTCK
J_SEL
TRSTn
TDO
TDI
TCK
TMS
C202
BT_RST
TXD1
TXD2
RXD2
IMAGE_INT
IMAGE_RESET
REF_ON
BT_INT
PON_TX
EXT2
DCS
KEY_LED_ON
RF_CLK
RF_DATA
RF_EN
RSTEXTn
EDGE1_PA
AFC
RAMP
MIC_BIAS_BB
MIC_N
MIC_P
AUXMICN
AUXMICP
FSC
DCL
R213
NC
DD
DU
R_CONTROL
MELODY_SEL
JACK_EN
END_OF_CHG
FLASH_EN
SIMCLK
SIMIO
SIMRST
EXT1
LCD_BL_ON
CHG_ON
USBCN
USBDM
USBDP
+VDD_IO_HIGH_C
C203
R208
C222
C223
+VDD_IO_LOW
USB Interface
JTAG
R202
R205
R211R210R209
ANL
ANR
DAI & Bluetooth data Interface
+VDD_IO_LOW
C204
C205
C206
STROBE
TP205
IT_PMU
M_INT
CLKBURST
D_REF_CLK
C219
C220
+VDD_IO_HIGH
R214
RX_TX_QN
RX_TX_QP
RX_TX_IN
RX_TX_IP
R215
C207
SCL
SDA
+VDD_GSM_CORE_C
C209
C208
C210
+VDD_IO_LOW
+VDD_IO_LOW +VDD_IMAGE
+VDD_IO_HIGH
R307
RSTON
S_RST_IMAGE
LCD_RESET
S_RST
R309
Q300
S2
D2
4
3
G2
G1
5
2
D1
S1
1
6
7-4
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Flow Chart of Troubleshooting
7-5
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Flow Chart of Troubleshooting
7-3. Charging Part
Abnormal charging part
Yes
Check the U505 pin 1
> 4.9V
Yes
U505 pin 5 = "L"?
Yes
U505 pin 3 = "L"?
Yes
Check the U505 pin 10
≒ 4.2V
No
No
No
No
Check the circuit related to
V_EXT_CHARGE
Resolder or replace U505
Check the circuit related to
AUX_ON signal
Resolder or replace U505
Yes
END
7-6
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BATTERY CHARGING
V_EXT_CHARGE
5.0V
+VBUS
AUX_ON
CHG_ON
C504
Flow Chart of Troubleshooting
Typical 3.7V
VBAT
+VDD_IO_HIGH
ZD501C503
C506
R511
U502
GND
ICDL
GND
USBON
IMIN
10
BAT
9
8
7
6
R515
1
CRDL
2
USB
3
_PPR
4
_CHG
5
_EN
11
R514
ZD500
R510
R512
C505
Typical 1.4V
MES_BATT
USB_CHG_ONEND_OF_CHG
7-7
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Flow Chart of Troubleshooting
7-4. Sim Part
Phone can't access SIM Card
SIM400 pin 1,5 = "H"?
Yes
No
Check the sim charge pump
Yes
After Power ON,
Check SIMCLK Signal on
pin3 of SIM400 in a few second
Yes
After SIM card insert,
SIM400 pin 2 = "H(SIM_RST)"?
Yes
Check the SIM Card
Yes
END
No
Check the Clock
No
Replace PBA
7-8
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Flow Chart of Troubleshooting
C406
C408
D3VDD
SIMEN
BU_RST
2.9V
+VDD_SLEEP
37
SCP
38
SCN
39
40
41
42
43
44
45
46
GPO3
47
GPO2
48
GPO1
49
GND
50
GND
51
GND
52
GND
53
NC
54
NC
C413
R405
V401
TP400
C421
1.8V
+VDD_IO_LOW
C418
C419
1.8V
SIM_VCC
SIM_IO
SIM_CLK
SIM_RST
C417
C420
SIM400
1
6
2
5
3
4
G78GG
G
910
AUX_ON
SCL
SDA
32KHz_DIGIT
PON_TX
REF_ON
SIMRST
SIMCLK
POS
NEG
31
32
29
30
27
26
25
28
OSCI
REFC
OSCO
_ONKEY
24
RF2VDD
23
RF12VBAT
22
RF1VDD
21
D1VDD
20
LPD1VBAT
19
LPVDD
18
HCVBAT
17
HCVDD
16
D2VDD
15
IOD2VBAT
14
IOVDD
13
_REC2
_RSTHC
_IRQ
MICBIAS
11
10
12
C423
33
VINT
VBAT
VCHG
VSAVE
CHGDRV
U400
_SIMRSHC
SIMIOHC
SIMCKHC
PWREN16PWREN2
7
9
8
5
C426
34
35
CPVDD
CHGCUR/BATMAX
SDA
CLK32K
3
4
36
CPVBAT
2
SIMD3VBAT
_SIMRSCD
SCL
1
C409
SIMVCC
SIMIOCD
SIMCKCD
_REC1
7-9
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Flow Chart of Troubleshooting
7-5. Microphone Part
Microphone does not work
Yes
Check the connection
from MIC
Yes
Check the circuit
from U200 to MIC
Yes
Check U601, U602 PIN 1
= ' H' ?
Yes
Check the MIC
No
No
No
No
Resolder MIC
Resolder the C603, C607, R601, R604
R630, R631
Check the JACK_EN signal
Replace the MIC
Yes
END
7-10
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Flow Chart of Troubleshooting
MICROPHONE
MIC600
6
78
123
ZD600
MIC_BIAS
Close to microphone
U600
C601
MIC_CP
C605
45
C607
R605
JACK_EN
R606
7
S1
8
1B1
9
VCC
10
S0
11
1B0
12
VCC
C609
6
GND
5
0B1
4
A1
3
GND
2
0B0
1
A0
Close to MCP
C600
L600
L601
MIC_BIAS
MIC_BIAS_BB
R600
R601
C603
R602
C606
R603
R604
C602
MIC_P
C604
MIC_N
C608
7-11
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Flow Chart of Troubleshooting
7-6. Speaker Part(Melody)
Speaker does not work
Yes
Check the U602
Pin 3, 15
Yes
Check the U604 Pin 5
U300 pin 17,18 ≒ 1.8V?
Check the R714, R715
(EAR1)
Yes
(When U300 operate)
Yes
No
Check the U300
No
Check the U604 Pin 1 (LOUD_EN),
Resolder U604
No
Resolder U300
No
Resolder U602
Yes
Check LCD MODULE
SPK+, SPK-
= Operate
Yes
Is Speaker working?
Yes
END
No
No
Check the board to board
Change the Speaker
7-12
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Connector
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