![](/html/50/5055/5055889d87921053388f9f5fab93b951c0479981cddcbade5b573adb6f9af206/bg1.png)
9. Flow Chart of Troubleshooting
9-1-1.
Power ON
Power On' does not work
'
Check the current consumption
Yes
Current consumption
Check the Vbat Voltage
Voltage
Check the pin of UCD3
Pin#M7
>= 100
Pin#A6
Pin#D6
in#L8
P
mA
Yes
>=3.3V
Yes
:1.8V
:2.9V
Yes
=2.9V
=1.8V
No
No
00
No
Check UCD300and
No
Check UCD300 and C301,C303
Download again
Charge the Battery
C343,
C344
Yes
Check the clock signal at pin#12of RFT100
Freq
Vrms
Vpp
Check the initial operation
≒
=26
>=300
1000
END
MHz
mV
mV
Yes
Yes
No
Check the clock generation circuit
relatedtoOSC
(
100,
Pin9,Pin10,
)
9-1
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Flow Chart of Troubleshooting
C
C
C
3
3
3
0
4
0
3
0
C302
C329
C
C
4
4
C326
3
2
3
5
C336
C
C
4
4
C342
3
3
2
6
C340
C339
C341
C
C304
3
3
C337
3
C335
C
3
3
8
C319
L301
T
-
D
E
-
E
-
1
6
1
F
G
0
0
C331
C332
1
1
3
3
D
C
U
C344
C
3
2
0
DCDC_OUT
VRF_2.9V
A
C
_
_
V
V
V
5
2
2
.
.
.
1
1
1
_
_
_
F
D
D
R
C
C
V
C
C
V
V
7
8
3
3
3
3
C
C
TH300
R300
R302
HI_MONO_OUT_N
HI_MONO_OUT_P
LO_MONO_OUT_N
LO_MONO_OUT_P
MAIN_MIC_IN_N
MAIN_MIC_IN_P
EAR_MIC_IN_N
EAR_MIC_IN_P
STEREO_OUT_L
STEREO_OUT_R
C323 C325C324
V
V
V
8
8
8
.
.
.
2
1
2
_
_
_
T
D
A
B
S
C
V
V
C
V
0
9
4
3
3
3
C
C
RADIO_L
RADIO_R
PWR_KEEP
JIG_ON
PWR_ON
V
9
.
2
_
D
C
C
V
1
4
3
C
EAR_ADC
ICHRG
C305
V
8
.
1
_
PAM_VRAMP
D
C
C
V
VLDO_COREA_S
3
2
4
4
3
3
C
C
R301
KEY_BL1
KEY_BL2
RXTX_DATA
RXTX_EN
RTX_I_N
RTX_I_P
RTX_Q_N
RTX_Q_P
TXPSTB
4
4
3
C
C306
G
-
A
X
C306
C
R
3
3
2
0
1
1
C304
A4
B4
B3
A2
B1
C1
C2
D1
D2
M3
M2
L3
L2
R13
R14
R12
P11
G13
J13
G12
G11
N15
L13
K15
K14
H11
J12
M14
M13
P6
E5
C4
F14
J5
H6
J6
D7
C7
D9
N2
R2
J4
J3
K3
K4
H5
L5
P13
P12
C10
A6
D6
E14
F12
D14
C15
B15
C12
D13
1
C
C303
3
2
8
O
C
S
3
2
C
7
3
0
C
0
3
1
5
C
C
C
3
3
3
1
0
0
0
9
8
C
C
C
3
3
3
2
2
2
5
4
3
C305
TH300
R300
R302
VCCD_2.9V VCCA_2.8V
C301
C300
0
5
4
2
5
1
7
1
2
1
1
1
1
1
1
N
K
M
L
P
N
D
C
N
1
0
6
7
8
8
9
9
4
1
6
1
1
F
F
F
F
F
K
K
K
K
E
N
5
K
0
1
F
4
8
L
P
1
6
1
G
F
VCCD_1.8V
UCD300
7
8
9
G
G
G
0
0
1
C
S
O
1
C115
C116
L110L115
C
C
C
1
1
1
4
3
3
7
8
3
C303C302
AX113E
B6
SIM_CLK
E6
SIM_IO
B5
SIM_RST
N5
SIM1_CLK
L6
SIM1_DATA
M6
SIM1_RST
E3
F3
F2
P1
CNTL_DAT_CSP
N9
CNTL_EN_CSP
D10
VBAT
G5
N7
AINT
B11
F1
L9
DINT
B12
B13
L301
D3
L10
PSW1_BUF
R3
RTC_CLK
P3
SCUSTB
C9
A12
F5
C5
N4
K7
E8
E9
MOTOR_EN
L7
VIB_RNG_EN
N6
CLK26M_ABB
R6
CLK_EN_ABB
R4
FLASH_RST
P5
RST
G4
G3
K13
VAMICREF
K10
K12
J11
C326
L14
F13
K11
C329
M10
UP_CS
P10
UP_SCLK
R10
UP_SDI
M9
UP_SDO
B10
C6
E13
E11
E2
A14
1
2
5
0
0
7
8
9
7
1
1
J
H
H
H
H
G
1
4
3
5
0
0
1
7
3
9
8
1
1
1
1
1
1
1
J
J
E
A
M
J
F
C
A
A
N
M
C335
GND_SW
C336
C110C111
7
B
6
2
F
1
0
T
0
L
1
0
6
C
1
4
2
VRF_2.9VVSYN_2.8V
C308 C310
C309
C315
DCDC_OUT
C319
GND_SW
VSIM_2.9V
C320
OSC300
VBAT
C331
C103
M
P
C100
R100
C109
R
C108
L
L
L
1
1
1
0
0
0
5
4
3
C117C118
R307
1
POS
BAT300
2
NEG
C321
C328C327
VBAT
C332
C333
GND_SW
VRF_2.9V
R100
VRF_2.9V
C111
26MHZ_BT
RTX_I_P
RTX_I_N
RTX_Q_P
RTX_Q_N
C103
C100
OSC100
2431
C101
C102
1
7
0
8
9
2
3
4
5
3
2
3
2
2
3
3
3
3
1
2
3
4
5
C110
6
7
8
9
10
RFT100
1
2
1
1
26
25
GSM850_LNA_IN_N
24
GSM850_LNA_IN_P
23
GSM900_LNA_IN_N
22
GSM900_LNA_IN_P
21
20
DCS_LNA_IN_N
19
DCS_LNA_IN_P
18
PCS_LNA_IN_N
17
SBLE
SBDT
SBCK
CLK26M_DBB
PCS_LNA_IN_P
6
5
4
3
1
1
1
1
C115
GSM_PAM_IN
DPCS_PAM_IN
VRF_1.5V
VRF_1.5V
C109C108
C116
9-2
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Flow Chart of Troubleshooting
9-1-2.
Initial
Initial Failure
Yes
The pin#A6 of UCD3
1.8V
the pin#D6 ofUCD3
2.9V ?
Is the pin#P5 of UCD300
Low→High"
"
There is
forms at the
32.768
and
C327
00 =
00 =
Yes
?
Yes
kHz wave
and
C328
No
No
No
if it has some problem, it is to be replaced.)
(
if it has some problem, it is to be replaced.)
(
Check the UCD300
Check the UCD300
Check the UCD300
Yes
The voltage is"High" at the
C301,C302,C303
Yes
LCD display is O.K
Yes
Sound is O.K
Yes
END
No
Check the UCD300
No
Check the LCD part
No
Check the Audio part
9-3
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Flow Chart of Troubleshooting
C
C
C
3
3
3
0
0
4
3
1
C305
R302
0
C
C303
3
2
8
O
C
S
3
2
C
7
3
0
C
0
3
1
5
C
C
C
3
3
3
0
0
1
8
9
0
C
C
C
3
3
3
2
2
2
5
4
3
TH300
R300
C302
C329
C
C
4
4
C326
2
3
5
3
C336
C
C
4
4
C342
3
3
2
6
C340
C339
C341
C
C304
3
3
C337
3
C335
C
3
3
8
C319
L301
1
F
6
-
T
D
G
-
-
3
1
E
E
1
1
X
-
A
G
0
3
0
C331
C332
U
C
D
C344
C306
C
R
C
3
3
3
0
2
2
1
0
1
VCCD_2.9V VCCA_2.8V
C300
DCDC_OUT
VRF_2.9V
A
C
_
_
V
V
V
5
2
2
.
.
.
1
1
1
_
_
_
F
D
D
R
C
C
V
C
C
V
V
TH300
R300
R302
HI_MONO_OUT_N
HI_MONO_OUT_P
LO_MONO_OUT_N
LO_MONO_OUT_P
MAIN_MIC_IN_N
MAIN_MIC_IN_P
EAR_MIC_IN_N
EAR_MIC_IN_P
RADIO_L
RADIO_R
STEREO_OUT_L
STEREO_OUT_R
PWR_KEEP
PWR_ON
C323 C325C324
V
V
V
8
8
8
.
.
.
2
1
2
_
_
_
T
D
A
B
S
C
V
V
C
V
JIG_ON
V
9
.
2
_
D
C
C
V
EAR_ADC
C305
V
8
.
1
_
D
C
C
V
ICHRG
R301
KEY_BL1
KEY_BL2
RXTX_DATA
RXTX_EN
RTX_I_N
RTX_I_P
RTX_Q_N
RTX_Q_P
PAM_VRAMP
TXPSTB
VLDO_COREA_S
7
9
0
8
3
3
3
3
3
3
C
C
C
2
4
3
1
4
4
4
4
4
3
3
3
3
3
C
C
C
C
C
C304
4
2
7
1
1
1
N
M
C
N
A4
B4
B3
A2
B1
C1
C2
D1
C306
D2
M3
M2
L3
L2
R13
R14
R12
P11
G13
J13
G12
G11
N15
L13
K15
K14
H11
J12
M14
M13
P6
E5
C4
F14
J5
H6
J6
D7
C7
D9
N2
R2
J4
J3
K3
K4
H5
L5
P13
P12
C10
A6
D6
E14
F12
D14
C15
B15
C12
D13
1
9
8
4
1
6
1
F
K
K
K
K
N
VCCD_1.8V
C301
0
5
5
1
2
5
1
1
1
1
K
K
L
P
N
D
0
0
9
7
8
6
1
1
F
F
F
F
F
E
C303C302
AX113E
4
8
L
P
UCD300
0
1
8
7
9
6
7
1
1
H
G
G
G
G
F
G
5
0
4
0
8
H
1
9
9
7
8
1
1
1
1
J
J
J
H
M
J
H
N
M
B6
SIM_CLK
E6
SIM_IO
B5
SIM_RST
N5
SIM1_CLK
L6
SIM1_DATA
M6
SIM1_RST
E3
F3
F2
P1
CNTL_DAT_CSP
N9
CNTL_EN_CSP
D10
VBAT
G5
N7
AINT
B11
F1
L9
DINT
B12
B13
L301
D3
L10
PSW1_BUF
R3
RTC_CLK
P3
SCUSTB
C9
A12
F5
C5
N4
K7
E8
E9
MOTOR_EN
L7
VIB_RNG_EN
N6
CLK26M_ABB
R6
CLK_EN_ABB
R4
FLASH_RST
P5
RST
G4
G3
K13
VAMICREF
K10
K12
J11
C326
L14
F13
K11
C329
M10
UP_CS
P10
UP_SCLK
R10
UP_SDI
M9
UP_SDO
B10
C6
E13
E11
E2
A14
1
2
C335
1
0
3
5
3
7
1
1
1
1
E
A
F
C
A
A
GND_SW
C336
VRF_2.9VVSYN_2.8V
C308 C310
C309
C315
DCDC_OUT
C319
GND_SW
VSIM_2.9V
C320
OSC300
VBAT
C331
R307
1
POS
BAT300
2
NEG
C321
C328C327
VBAT
C332
C333
GND_SW
9-4
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Flow Chart of Troubleshooting
9-1-3.
Sim Part
Insert SIM is displayed on the LCD
"
Yes
Check the SIM connector's
SIM
(
Check the voltage at pin#1
pin#2,#3,#4 of SIM
connection to
600)
SIM card
Yes
of SIM
600 >= 2.8V ?
Yes
Is there any signals
600 ?
No
No
No
Resolder or change SIM
Check the UCD300
Check the UCD3
600
00
Yes
Check the SIM Card
END
9-5
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VSIM_2.9V
SIM_RST
SIM_CLK
C604
Flow Chart of Troubleshooting
C
C
SIM600
C302
615141
6
5
4
SIM_IO
12
11
10
13
C607
1
2
3
7
8
C605C603
9
C
4
2
5
C
4
3
6
C304
C337
C341
C329
C
4
C326
3
3
C336
C
4
C342
3
2
C340
C339
C
3
3
3
C335
C
3
3
8
C319
L301
1
F
-
D
G
T
0
1
6
0
C331
C332
1
1
3
E
-
E
-
U
C
D
3
C344
C
3
2
0
C
3
3
3
0
4
0
0
3
1
X
-
A
G
C
C303
3
2
8
O
C
S
3
2
C
7
3
0
C
0
3
1
5
C
C
C
3
3
3
1
0
0
0
9
8
C
C
C
3
3
3
2
2
2
3
4
5
C306
R
C
C305
3
0
1
TH300
3
2
1
R302
R300
7
3
3
C
C
_
V
2
.
1
_
D
C
C
V
VRF_2.9V
V
5
.
1
_
F
R
V
8
3
3
C
A
_
V
2
.
1
_
D
C
C
V
TH300
R300
R302
HI_MONO_OUT_N
HI_MONO_OUT_P
LO_MONO_OUT_N
LO_MONO_OUT_P
MAIN_MIC_IN_N
MAIN_MIC_IN_P
EAR_MIC_IN_N
EAR_MIC_IN_P
STEREO_OUT_L
STEREO_OUT_R
PWR_KEEP
C323 C325C324
V
V
V
8
8
8
.
.
.
2
1
2
_
_
_
T
D
A
B
S
C
V
V
C
V
0
9
1
4
3
4
3
3
3
C
C
C
RADIO_L
RADIO_R
JIG_ON
PWR_ON
V
9
.
2
_
D
C
C
V
DCDC_OUT
EAR_ADC
ICHRG
C305
RXTX_DATA
V
8
.
1
_
PAM_VRAMP
D
C
C
V
VLDO_COREA_S
2
3
4
4
3
3
C
C
R301
KEY_BL1
KEY_BL2
RXTX_EN
RTX_I_N
RTX_I_P
RTX_Q_N
RTX_Q_P
TXPSTB
4
4
3
C
C306
VCCD_2.9V VCCA_2.8V
C300
C304
2
4
7
1
1
1
N
M
N
C
A4
B4
B3
A2
B1
C1
C2
D1
D2
M3
M2
L3
L2
R13
R14
R12
P11
G13
J13
G12
G11
N15
L13
K15
K14
H11
J12
M14
M13
P6
E5
C4
F14
J5
H6
J6
D7
C7
D9
N2
R2
J4
J3
K3
K4
H5
L5
P13
P12
C10
A6
D6
E14
F12
D14
C15
B15
C12
D13
1
6
9
8
4
1
1
F
K
K
K
K
N
VCCD_1.8V
C301
0
5
5
1
2
5
1
1
1
1
K
K
P
L
N
D
0
0
9
8
7
6
1
1
F
F
F
F
F
E
C303C302
4
8
L
P
UCD300
0
1
9
6
7
7
8
8
9
1
1
H
H
H
G
G
G
G
F
G
AX113E
C308 C310
C315
C336
VRF_2.9VVSYN_2.8V
C309
DCDC_OUT
C319
GND_SW
C320
C331
VSIM_2.9V
OSC300
VBAT
C332
C321
VBAT
R307
1
POS
BAT300
2
NEG
C328C327
C333
GND_SW
B6
SIM_CLK
E6
SIM_IO
B5
SIM_RST
N5
SIM1_CLK
L6
SIM1_DATA
M6
SIM1_RST
E3
F3
F2
P1
CNTL_DAT_CSP
N9
CNTL_EN_CSP
D10
VBAT
G5
N7
AINT
B11
F1
L9
DINT
B12
B13
L301
D3
L10
PSW1_BUF
R3
RTC_CLK
P3
SCUSTB
C9
A12
F5
C5
N4
K7
E8
E9
MOTOR_EN
L7
VIB_RNG_EN
N6
CLK26M_ABB
R6
CLK_EN_ABB
R4
FLASH_RST
P5
RST
G4
G3
K13
VAMICREF
K10
K12
J11
C326
L14
F13
K11
C329
M10
UP_CS
P10
UP_SCLK
R10
UP_SDI
M9
UP_SDO
B10
C6
E13
E11
E2
A14
1
2
C335
5
4
0
7
8
1
J
J
H
1
0
3
5
0
1
7
3
9
1
1
1
1
1
1
1
J
E
A
M
J
F
N
C
A
A
M
GND_SW
9-6
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Flow Chart of Troubleshooting
9-1-4.
Microphone Part
Microphone does not work
Is the assembled status of
microphone O.K?
Check the reference voltage on mic path
Yes
No
Reassembled the microphone
Yes
Yes
On booting,
VAMICREF
On booting,
between MIC+
END
≒
2.5V ?
Yes
≒0.9
Yes
V?
No
No
Check UCD300 or R436
Resolder or change
L404,L405,C432,C433
①
②
9-7
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MIC400
Flow Chart of Troubleshooting
C
R
2
2
1
1
9
0
C
1
3
0
B
3
1
S
-
3
R
0
K
Q
TA502
0
B
5
T
C
ZD505
R
6
1
4
ZD401 ZD402
C504
MIC400
9
0
4
C
NEAR MIC
1
0
4
D
1
Z
2
3
4
T
R
O
H
S
8
3
4
R
L404
L405
2
0
4
D
Z
NEAR BB
-
-
-
>
--->
C432
C433
R436
C436
C425
C
4
0
9
L
4
R
4
0
3
8
4
MAIN_MIC_IN_
MAIN_MIC_IN_
5
L
4
0
5
C
4
2
5
C
4
3
6
C
3
3
8
R436
C341
C304
C337
C335
C
4
3
3
C
4
3
2
C319
C302
C329
C326
C336
C342
C340
C339
C
3
3
3
L301
1
F
G
-
D
T
6
0
0
C331
C332
1
1
3
E
-
E
-
1
C
D
3
C344
G
-
A
X
U
C306
C
C
R
3
3
3
2
2
0
1
0
1
C
3
0
1
C
3
2
8
C
3
2
7
C
3
1
5
C305
R302
C
C
3
3
0
4
0
3
C303
O
S
C
3
0
0
C
C
C
3
3
3
1
0
0
0
9
8
C
C
C
3
3
3
2
2
2
3
4
5
TH300
R300
VCCD_2.9V VCCA_2.8V
C300
DCDC_OUT
VRF_2.9V
TH300
C
A
_
_
V
V
V
5
2
2
.
.
.
V
1
1
1
8
.
_
_
_
1
F
D
D
_
R
C
C
T
V
C
B
C
V
V
V
7
8
9
3
3
3
3
3
3
C
C
C
R300
R302
HI_MONO_OUT_N
HI_MONO_OUT_P
LO_MONO_OUT_N
LO_MONO_OUT_P
MAIN_MIC_IN_N
MAIN_MIC_IN_P
EAR_MIC_IN_N
EAR_MIC_IN_P
RADIO_L
RADIO_R
STEREO_OUT_L
STEREO_OUT_R
PWR_KEEP
PWR_ON
C323 C325C324
V
V
8
8
.
.
2
2
_
_
A
D
C
S
V
C
V
0
1
4
4
3
3
C
C
JIG_ON
V
9
.
2
_
D
C
C
V
EAR_ADC
ICHRG
C305
V
8
.
1
_
D
C
C
V
VLDO_COREA_S
2
4
3
C
KEY_BL1
KEY_BL2
RXTX_DATA
RXTX_EN
RTX_I_N
RTX_I_P
RTX_Q_N
RTX_Q_P
PAM_VRAMP
3
4
3
C
R301
TXPSTB
4
4
3
C
C304
5
4
2
7
1
1
1
1
N
M
D
C
N
A4
B4
B3
A2
B1
C1
C2
D1
C306
D2
M3
M2
L3
L2
R13
R14
R12
P11
G13
J13
G12
G11
N15
L13
K15
K14
H11
J12
M14
M13
P6
E5
C4
F14
J5
H6
J6
D7
C7
D9
N2
R2
J4
J3
K3
K4
H5
L5
P13
P12
C10
A6
D6
E14
F12
D14
C15
B15
C12
D13
1
0
6
8
9
4
1
1
1
F
K
K
K
K
N
E
VCCD_1.8V
C301
0
5
1
2
5
1
1
1
K
K
L
P
N
0
9
6
8
7
1
F
F
F
F
F
C303C302
4
8
L
P
UCD300
0
1
1
F
9
8
8
7
9
6
7
1
H
H
H
G
G
G
G
G
AX113E
C336
VRF_2.9VVSYN_2.8V
C308 C310
C309
C315
DCDC_OUT
C319
GND_SW
VSIM_2.9V
C320
OSC300
VBAT
C331
R307
1
POS
BAT300
2
NEG
C321
C328C327
VBAT
C332
C333
GND_SW
B6
SIM_CLK
E6
SIM_IO
B5
SIM_RST
N5
SIM1_CLK
L6
SIM1_DATA
M6
SIM1_RST
E3
F3
F2
P1
CNTL_DAT_CSP
N9
CNTL_EN_CSP
D10
G5
N7
B11
F1
L9
B12
B13
D3
L10
R3
P3
C9
A12
F5
C5
N4
K7
E8
E9
L7
N6
R6
R4
P5
G4
G3
K13
K10
K12
J11
L14
F13
K11
M10
P10
R10
M9
B10
C6
E13
E11
E2
A14
5
4
0
9
8
7
1
J
J
J
H
1
5
0
0
1
1
J
N
3
1
7
3
1
1
1
1
1
E
A
M
F
C
A
A
M
VBAT
AINT
DINT
L301
PSW1_BUF
RTC_CLK
SCUSTB
MOTOR_EN
VIB_RNG_EN
CLK26M_ABB
CLK_EN_ABB
FLASH_RST
RST
VAMICREF
C326
C329
UP_CS
UP_SCLK
UP_SDI
UP_SDO
1
2
C335
GND_SW
9-8
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![](/html/50/5055/5055889d87921053388f9f5fab93b951c0479981cddcbade5b573adb6f9af206/bg9.png)
Flow Chart of Troubleshooting
9-1-4.
EAR Microphone Part
Ear Microphone does not work
On booting,
EAR_MIC+
On booting,
MICBIAS_EAR_2.6V
On booting,
EARMIC_MIAS_EN
Check UCP200
≒
2.0V ?
No
≒2.6V?
No
≒2.9V?
No
Yes
Yes
Check R409,R430,R437
R422,R434
Yes
Is the status of C434 O.K?
No
Check C434
Is the signal of VBAT OK?
No
Check R427 and BTC500
Yes
Yes
Check UCD300
Check U404
EAR_MIC_IN_P
EAR_MIC_IN_N
F
6
0
C
C600
R430
C
6
6
0
0
1
6
C602
C218
R229
R228
R418
R
4
2
4
C
2
1
7
R227
R226
R
4
U402
3
3
R
4
2
9
6
0
4
C
C426
C429
C417
R
4
2
8
R
4
R
2
4
5
2
7
TA400
U
2
0
0
TA400
4
0
4
U
C434
R409
R437
C
4
2
8
ZD608
R218
R224
ZD607
C434
R402
C406
C429
C
C
4
4
2
1
6
7
MICBIAS_EAR_2.6V
7
3
4
R
9
0
4
R
C
3
0
3
2
U
3
4
R
3
1
5
C
L
3
3
0
3
2
0
R412
2
0
4
R
1
9
0
2
-
0
8
0
0
5
-
4
-
0
6
0
C
0
D
H
C615
EAR_MIC+
C427
C
C
4
4
L408
0
0
1
0
L407
0
8
-
5
4
1
2
0
6
F
9-9
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
![](/html/50/5055/5055889d87921053388f9f5fab93b951c0479981cddcbade5b573adb6f9af206/bga.png)
Flow Chart of Troubleshooting
C
1
3
1
-
3
R
0
K
3
Q
S
B
TA502
R
6
1
4
5
C
L
L
4
4
R
4
4
0
0
9
0
3
8
4
5
C
5
0
0
BATT_OPEN_CHECK
T
B
MIC400
ZD504
VBAT
ZD505
C504
ZD505
C504
ZD401 ZD402
TA502
BTC500
1
2
3
4
5
6
7
ZD400
R
4
2
2
R434
R431
C507
R430
C427
L
R432
5
0
0
R420
U
4
0
5
L505
C418
EAR_SW
VCCD_1.8V
4
U405
VCCD_1.8V
R432R431
5
1
3
2
R422
R434R420
0
0
4
D
Z
EAR_AD
EAR_KEY
MICBIAS_EAR_2.6V
C428
VBAT
U404
41
2
3
5
R427
EARMIC_BIAS_E
R428
9-10
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
![](/html/50/5055/5055889d87921053388f9f5fab93b951c0479981cddcbade5b573adb6f9af206/bgb.png)
Flow Chart of Troubleshooting
9-1-5.
Receiver Part
There is no sound from the Receiver
Is the terminal of Receiver
Is there any signals at the
R400 and R401 of UCD3
2
O.K
END
C
3
3
0
U
3
4
R
3
1
5
C
L
3
3
0
3
2
0
R412
Yes
?
Yes
Yes
C218
R229
R228
R418
R
4
2
4
R
4
3
3
R
4
2
9
00?
C
2
1
7
R227
R226
U402
R
4
2
5
No
No
C
C600
6
0
6
2
9
R409
R437
4
0
4
U
ZD608
R218
R224
ZD607
C434
R402
C406
C429
C
C
C
4
4
4
2
2
1
8
6
7
U
2
0
0
TA400
R
4
2
8
R
4
2
7
Replace the Receiver
CheckUCD300,L407,L408
F
6
0
C
6
0
1
-
8
C602
1
0
-
0
4
0
-
0
0
0
0
C615
8
0
5
6
H
D
C
C
C
4
4
L408
0
0
0
1
L407
1
4
-
5
2
0
6
F
L407
LO_MONO_OUT_P
L408
C400
C401
RCV+
9-11
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
-VCRN_TUO_ONOM_OL