Samsung SGH-S342i User manual

GSM TELEPHONE
SGH-S342i
GSM TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. PCB Diagrams
6. Block Diagrams

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1. SGH-S342i Specification
1-1
This Document can not be used without Samsung's authorization
1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1 PCS1900
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 1~124 0~124 &
975~1023 512~885 512~810
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~13dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km -

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SGH-S342i Specification
1-2
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2. GSM TX power class
TX Power
control level GSM900
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
10 23±2dBm
11 21±2dBm
12 19±2dBm
13 17±2dBm
14 15±2dBm
15 13±2dBm
16 11±3dBm
17 9±3dBm
18 7±3dBm
19 5±3dBm
TX Power
control level DCS1800
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
TX Power
control level PCS1900
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm

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2. SGH-S342i Flow Chart of Troubleshooting
2-1
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1.Baseband
1. Power ON
'Power On' does not work
Voltage >=3.3V
Download again
Charge the Battery
Pin#J12 >= 2.8V Check U100 and C111
Check U100 and U114
Freq = 13MHz
Vrms >=300mV
Vpp≒900mV
Check the clock generation circuit
(related to OSC700)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#G11 =
1.5V
No
Yes
Check the current consumption
Check the Vbat Voltage
Check the pin of U100
Checktheclocksignalatpin#27ofU700
Current consumption
>= 100mA
Pin#A13 and
pin#A14 =2.8V

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SGH-S342i Flow Chart of Troubleshooting
2-2
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2. Initial
Initial Failure
The pin #G11 of U100 =
1.5V and
the pin #J12 of U100 =
2.825V ?
Check the U100
(if it has some problem, it is to be replaced.)
Yes
No
Is the pin #K9 of U100
"Low →High" ?
Yes
No Check the U100
(if it has some problem, it is to be replaced.)
There is 32.768kHz wave
forms at the C214 and
C215
Yes
No
Check the U200
Is the pin #A4 of U100
is "High"
The voltage is "High" at
the C113,C110,C119 Check the U100
Check the U700
LCD display is O.K
No
No
Yes
Yes
Yes
Check the LCD part
No
Sound is O.K
Yes
No
Check the Audio part
END
Yes

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SGH-S342i Flow Chart of Troubleshooting
2-3
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3. Sim Part
Check the voltage at
pin#1 of CN100 >=
2.8V ?
"Insert SIM is displayed on the LCD
Check the SIM
connector's (CN100)
connection to SIM card
Check the U100
Resolder or change CN100
END
No
Yes
Yes
Yes
Yes
No
No
Is there any signals
pin#2,#3,#4 of CN100 ? Check the U200
Check the SIM Card

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SGH-S342i Flow Chart of Troubleshooting
2-4
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4. Microphone Part
Is the assembled status
of microphone O.K?
Microphone does not work
Reassembled the microphone
Resolder or change
R406,C416,R407,C405,R410,C413,
R421,C421,R420,R425,C427,C422
END
No
Yes
Yes
Yes
Yes
No
Is microphone ok?
No
Check U700
Check the reference voltage on mic path
C406 ≒2.0V ?
Yes

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SGH-S342i Flow Chart of Troubleshooting
2-5
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5. Speaker Part
There is no sound from the Speaker
Is the terminal of Speaker
O.K ?
No
Replace the Speaker
Yes
Are there any signals at
the C502,C503
No
Yes
Check LCD or Replace CN500
Thetypeofsound
from the Speaker is
Melody
Is there any signals
at the pin#5 and
pin#7 of U400 ?
Is there any signals
at the pin#2 and
pin#10 of U400 ?
Yes No
The pin#4 of
U400 is "Low"
The pin#4 of
U400 is "High"
Check the
U401
Check the
U401
Yes Yes
NoNo
Check the U200
Check the U400
Yes Yes
No No
END

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SGH-S342i Flow Chart of Troubleshooting
2-6
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6. Camera Part
"Camera" function dose not work
Yes
Check the connect
CN500
Yes
U302 PIN 5 = 2.8V?
Yes
R402 < 25MHz
Connect the camera module
Check U202 and C210
C308, U301
No
No
No
END

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SGH-S342i Flow Chart of Troubleshooting
2-7
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F700 CHECK
pin13 ≥-65dBm ?
2.RF
1. EGSM RX
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
CHECK
ANT700,R708 contact ?
U700
pin 9,31: 2.8V ?
F700 CHECK
pin1,2 ≥-65dBm ?
U700 CHECK
pin20,21 ≥-65dBm ?
C732,CN700
resolder or change
F700
resolder or change
resolder or change
U100 pinA13, C119
change or resolder
U700 CHECK
pin 8 : 13MHz ?
Vp-p : 950mV?
OSC700
change or resolder
U700
resolder or change
U100 CHECK!!
U700
pin1,2,3,28 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES

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SGH-S342i Flow Chart of Troubleshooting
2-8
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F700 CHECK
pin13 ≥-65dBm ?
2. DCS RX
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
CHECK
ANT501,R708 contact ?
U700
pin 9, 31: 2.8V ?
F700 CHECK
pin3,4 ≥-65dBm ?
U700 CHECK
pin18, 19 ≥-65dBm ?
C732,CN700
resolder or change
F700
resolder or change
C734,C735,L707
resolder or change
U100 pinA13, C119
change or resolder
U700 CHECK
pin 8 : 13MHz ?
Vp-p : 950mV?
OSC700
change or resolder
U700
resolder or change
U100 CHECK!!
U700
pin1,2,3,28 Vp-p
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES

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SGH-S342i Flow Chart of Troubleshooting
2-9
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F700 CHECK
pin13 ≥-65dBm ?
3. PCS RX
CONTINUOUS RX ON
RF INPUT : 660CH
AMP : -50dBm
NORMAL CONDITION
catch the channel? CHECK
ANT700,R708 contact ?
U700
pin 9, 32: 2.8V ?
F700 CHECK
pin5,6 ≥-65dBm ?
U700 CHECK
pin16,17 ≥-65dBm ?
C732,CN700
resolder or change
F700
resolder or change
C726,C727,L704
resolder or change
U100 pinA13, C119
change or resolder
U700 CHECK
pin 8 : 13MHz ?
Vp-p : 950mV?
OSC700
change or resolder
U700
resolder or change
U100 CHECK!!
U700
pin1,2,3,28 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
F700 CHECK
pin12 : 2.8V
YES
U100
check & change
NO

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SGH-S342i Flow Chart of Troubleshooting
2-10
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4. EGSM TX
F700 pin 10 :
about 2~3
dBm?
C732,CN700
check&change
F700
pin11:2.8V? U100
check & change
U701 pin12 :
about 4~5dBm?
F700
check & change
U701
pin8,20 : 3.7
V?
NO NO
YES
YES
YES
NO
NO BATTERY
check & change
U701
pin 22 : 1.6V ?
YES
NO
U701 pin6
about : -5dBm
?
YES
U701
pin 2 : 3V?
YES
YES
U701
change or resolder
NO
U100
check
U100
check
NO
U700
pin9,32 : 2.8V ?
U100 pinA13,C119
change or resolder
YES
U700
pin8 : 13MHz ?
Vp-p : 950mV?
U700
pin4,5,6,7:100m
V?
YES
U100
change or resolder
NO
NO
U700
change or resolder
YES
NO
OSC700
change or resolder
CONTINOUS TX ON CONDITION
TX POWER DAC: 600 CODE APPLIED
CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

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SGH-S342i Flow Chart of Troubleshooting
2-11
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5. DCS TX
F700 pin 8 :
about 2~3
dBm?
C732,CN700
check&change
F700
pin9 : 2.8 V?
U100
check & change
U701 pin17 :
about 4~5dBm?
F700
check & change
U701
pin8,20 : 3.7
V?
NO NO
YES
YES
YES
NO
NO
BATTERY
check & change
U701
pin 22 : 1.4V ?
YES
NO
U701 pin5
about : -5dBm ?
YES
U701
pin 2 : 3V?
YES
YES
U701
change or resolder
NO
U100
check
U701
check
NO
U700
pin9,32 : 2.8V ?
U100 pinA13,C119
change or resolder
YES
U700
pin8 : 13MHz ?
Vp-p : 950mV?
U700
pin4,5,6,7:100m
V?
YES
U100
change or resolder
NO
NO
U700
change or resolder
YES
NO
OSC700
change or resolder
CONTINUOUS TX ON CONDITION
CH : 698CH(DCS)
TX POWER CODE: 520 CODE Aplied
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

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SGH-S342i Flow Chart of Troubleshooting
2-12
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6. PCS TX
F700 pin 13 :
about 7~8
dBm?
C732,CN700
check&change
F700
pin9 : 2.8 V? U100
check & change
U701 pin17 :
about 4~5dBm?
F700
check & change
U701
pin8,20 : 3.7
V?
NO NO
YES
YES
YES
NO
NO BATTERY
check & change
U701
pin 22 : 1.4V ?
YES
NO
U701 pin5
about : -5dBm ?
YES
U701
pin 2 : 3V?
YES
YES
U701
change or resolder
NO
U100
check
U100
check
NO
U700
pin9,32 : 2.8V ?
U100 pinA13,C119
change or resolder
YES
U700
pin8 : 13MHz ?
Vp-p : 950mV?
U700
pin4,5,6,7:100m
V?
YES
U100
change or resolder
NO
NO
U700
change or resolder
YES
NO
OSC700
change or resolder
CONTINUOUS TX ON CONDITION
CH : 660CH(PCS)
TX POWER CODE: 520 CODE Aplied
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

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SGH-S342i Flow Chart of Troubleshooting
2-13
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CSP2600
10NF
C100
VCCA
VCCB
C119
1uF
VCCD
NC
C116
100K
R100
100NF
C102
1uF
C114
LM60CIM3X
U101
GND
3
2VO VS 1
6.3V
10UF
C110
334
4
55
6
6
G
78
GG
91 0
G
CN100
11
22
C112
1uF
100PF
C109
VCCA
VBAT
VCCD
11.3K,1%
R102
10UF
C120
VCCB
K4
VSS3R2
VSS4P6
VXVCM
R13
XOENAQ
D1
6.3V
VLDO_4 B12
VLDO_5 B10
VLDO_6 A14
VLDO_7 C12
VREF A10
VREGN
R14
VREGP
M13
VRTC H11
VSIM K12
VSS1G5
VSS2
C4
VEXT E14
VIB_DRV F15
VIB_RNG_EN
L9
VL4S_A A12
VL4S_B B11
VL5S_A D10
C9
VL5S_B
VLDO_1 G11
VLDO_2 J12
VLDO_3 A13
J13
VDD2M3
VDD3N6
C11
VDD34
VDD5C10
VDD67B13
VDDBA6
VDDDN11
VDDVL11
VDD_IO1N5
VDD_IO2J4
VDD_OCTL
SIM_CLK K14
SIM_IO J11
SIM_RST K11
TXP
E7
UP_CLK N9
UP_IO P10
UP_RST R10
VACC F14
VBAT E13
VDD1J3
VDD12
RXTXIN
D6
RXTXIP
D7
RXTXQN
C6
RXTXQP
C7
SCLK_PSC L8
M7
SDI_PSC
SDO_PSC N7
SERCK
C2
C1 SERDA
B1 SERLE1
SERLE2
A2
M9
PWR_SW1N
C15
PWR_SW2
C14
RAREF1
B6
RAREF2
B5
R3 RESETN_CSP
K9RESET_O
RING_DRV F13
RTC_ALMN H10
RTC_CLK
N4
RWN
L2
NC7
P5
OCTL0
E6
C5 OCTL1
OCTL2
F5
E5 OCTL3
A4 OCTL4
G6 OCTL5
OCTL6
B3
A3 OCTL7
PSW1_BUF
L7
PWR_KEEP
I|O
LED1_DRV G13
LED2_DRV G12
MC
R6
MICINN
M14
MICINP
N14
MICOUTN
P15
MICOUTP
N15
MODE
N10
1
NC5
NC62
G7
GNDS6G8
GNDS7G9
GNDS8G10
GNDS9H6
GNDVP13
GND_HCURF11
GND_OCTLB4
GND_PSC1B15
GND_PSC2K15
INTRQ
L10
L3
GNDS11H8
H9
GNDS12
GNDS13J7
GNDS14J8
GNDS15J9
GNDS16J10
GNDS17K10
GNDS2F8
F9
GNDS3
GNDS4F10
GNDS5
DB5
H5
DB6
G3
DB7
G4
DB8
F4
DB9
F1
DINTR
P3
GNDBF6
GNDDM10
GNDQE8
GNDS1F7
GNDS10H7
K1
K2 DB1
DB10
F2
DB11
F3
DB12
E2
DB13
E3
DB14
D3
DB15
D2
DB2
K3
J5 DB3
DB4
J6
AUX_ADC3D13
CH_BDRV E11
CH_ISEN F12
CH_RES D14
E9
CREF
K8
CSN_PSC
DAICK
R4
DAIDI
L6
DAIDO
M6
DAIRN
P4
DB0
E10
ADC_AUX2 D15
AFC
D9
AOUTAN
N12
AOUTAP
P11
AOUTBN
P12
AOUTBP
R12
AUXINN
L14
AUXINP
M15
AUXOUTN
L13
K13AUXOUTP
AB0
K6
P1 AB1
AB2
L5
N1 AB3
AB4
N2
M2 AB5
AB6
M1
K7 AB7
AB8
K5
ADC_AUX1
U100
1.2K
R101
100NF
C101
VCCD_1.8
VBAT
33PF
C107
VCCD_1.5
C118
1UF
R103
100
1uF
C113
VRTC
C111
1uF
C103
10NF
1M
R104
VRF
DAIDO
33PF
C108
C117
100NF
DAIRN
DAIDI
VCCD_1.8
VCCB
VBAT
DAICK
33PF
C104
VCCD
TS414R IV02E
BAT1
NEG 2
POS 1
C115
100NF
2.2UF
C106 C105
100NF
AUXOUTN
AUXINP
MICINP
MICINN
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
BP_VF
TX_BAND_SEL
RF_EN
AUXINN
XOENAQ
PSW1_BUF
PWR_KEEP
UP_CS
AUXOUTP
AOUTBP
AOUTBN
AOUTAP
AOUTAN
AFC
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(1)
DSP_DB(0)
CLK32K
RTCALARM
RST
FLASH_RESET
JIG_ON
PWR_ON
TX_EN
MICOUTP
MICOUTN
CLK13M_MC
KEY_BACKLIGHT
DSP_IO
INTRQ
DSP_INT
SERDAT
SERCLK
UP_SDO
UP_SDI
UP_SCLK
RTX_QP
RTX_QN
RTX_IP
RTX_IN
DSP_RWN
DSP_DB(0:15)
DSP_AB(0:8)
DCS_TX_EN
GSM_TX_EN
SIMRST
SIMDATA
SIMCLK
TXPOWER
SERLE

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SGH-S342i Flow Chart of Troubleshooting
2-14
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JTAG
BOARD_HOLE
TRIDENT
10NF
C204
G2
NC
R222
R221
0
A3212ELH-SAMSUNG
U201
3
GND
OUT 21 VCC
C211
47PF
24
R214
VRTC
NC
C218
100K
100NF
R207
10PF
C200
VCCD_1.8
C214
NC
R209
USB_3.3V
6.3V
10UF
C210
G3
R210
1.5K
C217
NC
20
17 TRST
27 TXD
23 V_BATT 8
V_BUS
13
14
MOT+
RXD
26
SPK+ 11
12
SPK-
21 TCK
19 TDI
TDO
18
TMS
ANT
32
D+ 9
10
D-
F-WE
22
GND 7
GND
24
25 HP/POWER
MIC+
28
28
29 29
33
30
30
31 31
4
4
55
6
6
CN201
JTAG-32PIN
11
15 15
16
16
2
2
100NF
C201
0
R217
47K
R202
100NF
C216
Q200
DTC114EM
13
2
C202
6.8NF
C212
100NF
100NF
C213
C215
10PF
VCCD_1.8
VCCD_1.8
22NF
C208
BLM10A102SGPT
L200
USB_5V
10NF
C206
G4
4
R201
100K
3EN
GND
2
IN
1OUT 5
REF_BYP
VC040205X150R
V201
U202
MIC5205-3.3BM5
R205 10K
10K
10KR204
R203
VCCD_1.8
3
15
VPU
1_OE
VCCD
C203
10NF
2
16
SOFTCON
8
SPEED
5
SUSPND
VDD
13
VDDIO
7
4
VM
VO 11
VP
6
17
GND
GND
18
GND
1920
GND
NC21
22 NC
NU
14
RCV
USS810M-D
U203
D+ 10
9
D-
12
FSE0
GND
47K
R208
VSS9H12
VSSA_DR11
VSSA_UF18
X1RTC
H19
F19X2RTC
M9
M10
VSS16
VSS17M11
M12
VSS18
A18
VSS2
VSS3G8
VSS4G9
VSS5H8
H9
VSS6
VSS7H10
H11
VSS8
VDD_IO_1P8_6
VDD_IO_1P8_7D9
D18
VDD_IO_1P8_8
VDD_IO_1P8_9F1
G18
VRTC
VSS1A2
J12
VSS10
VSS11K8
L7
VSS12
VSS13L8
M8
VSS14
VSS15
VDD_IO_1P8_13T18
U1
VDD_IO_1P8_14
VDD_IO_1P8_15U5
U12
VDD_IO_1P8_16
VDD_IO_1P8_17W8
W18
VDD_IO_1P8_18
B6
VDD_IO_1P8_2
VDD_IO_1P8_3B12
VDD_IO_1P8_4B16
VDD_IO_1P8_5C1
C14
VDD_CORE2
VDD_CORE3G2
H18
VDD_CORE4
VDD_CORE5M2
N18
VDD_CORE6
VDD_CORE7V7
VDD_CORE8V13
VDD_IO_1P8_1B4
L4
VDD_IO_1P8_10
VDD_IO_1P8_11L16
P1
VDD_IO_1P8_12
T12
TEST1 U15
T14
TEST2
TEST3 V16
TMSW14
R12
TRSTN
TX0
M3
TX1
K7
T11
VDDA_D
F17
VDDA_U
VDD_CORE1B8
B13
R3SPCLK0
M18
SPCLK1_PIO18
T3SPFS0
SPFS1_PIO15 N15
SPRXD0
R4
SPRXD1_PIO17 M17
SPTXD0_I2SD
U2
N16
SPTXD1_I2SD_PIO16
U14
TCK
V14
TDI
TDO
PIO47
G5PWM1_PIO46
RESTNG15
RIO_PIO01
P3
RTCALARMN
H17
N2RTS0_PIO04
RWN V6
M1RX0_IRQ28
L6RX1_IRQ28
SIMCLK
P4
T2SIMIO
PIO33
PIO34 R14
PIO35_A_A25_BOOTSEL
F2
F16PIO36_USB_OEN
PIO37_USB_DATA
E17
J15PIO38_MCI_CLK
L14PIO39_MCI_CMD_EN
PIO40_MCI_DAT_EN
M14
R16PIO41_IRDATX
PIO42_IRDARX
R17
N14PIO43_MCI_DAT0_EN
J16
PIO22_MCI_DAT
1
L12
L13PIO23_MCI_DAT
2
PIO24_MCI_DAT
3
L15
V19PIO25
PIO26
U16
PIO27
U19
W17PIO28
E14 PIO30_WAITN
PIO31_IRQ6 P12
PIO32
R13
U18
B19
PIO08_MCI_CMD
J13
C19PIO09_USB_VPI
PIO10
V17
PIO11_USB_VMI
C18
D17PIO12_USB_VPO
E16PIO13_USB_VMO
P5PIO14_SIMRST
P15PIO19_PWRKEEP
PIO20_SYSCLKREQ
P19
K13PIO21_MCI_DAT
0
J4
J8KEYBRD4
KEYBRD5
H6
H4KEYBRD6
KEYBRD7
H1
H3KEYBRD8
KEYBRD9
G6
1
NC1
NC22
G16OSC32OUT
PIO00_IRQ5 P16
PIO07_USB_SUSP
IOBIT1_PIO06 N11
IRQ1 M16
M19
IRQ2
IRQ3 P17
P18
IRQ4
J7KEYBRD0
KEYBRD1
J6
G4KEYBRD10
H2KEYBRD11_PSW1_BUF
J5KEYBRD2
KEYBRD3
T7
R8
D_D4
D_D5 V8
U8
D_D6
D_D7 T8
T9
D_D8
R9
D_D9
FLASHRSTN
H14
T15
INT0
IO W6
V12
IOBIT0_PIO05
N6
R6
D_A8
U6
D_D0
D_D1 T6
P8
D_D10
D_D11 P9
N8
D_D12
D_D13 N9
N10
D_D14
D_D15 P11
R7
D_D2
D_D3
N5DCD0_PIO44
P2DSR0_PIO02
DTR0_PIO03
N4
V1
D_A0
D_A1 W2
W3
D_A2
D_A3 V3
U4
D_A4
T5
D_A5
V4
D_A6
D_A7
F11
E11 A_D6
A_D7
G12
D11 A_D8
A_D9
E12
A_OEN
B14
A_WEN
D14
W12
CKI
N12
CKO_IACK
T17
CPTSTSTOP_CKO
CTS0_PIO29
M6
A_D0
A_D1
E9
C12 A_D10
A_D11
A12
F12 A_D12
A_D13
D12
E13 A_D14
A_D15
D13
F9 A_D2
A_D3
G10
G11 A_D4
A_D5
H16 A_BE0N
A_BE1N
A17
A14 A_CS0N
A_CS1N
C15
G14 A_CS2N
A_CS3N
J14
D15 A_CS4N
A_CS5N
C16
A_CS6N
F15
A_CS7N
B17
A8
E3
F5 A_A22
A_A23
F4
F3 A_A24
A_A3
A6
C6 A_A4
C5 A_A5
D7 A_A6
A_A7
E7
C4 A_A8
A_A9
C2
B3
B1 A_A12
A_A13
D6
D5 A_A14
A_A15
D3
E8 A_A16
A_A17
F8
A_A18
E6
A_A19
D2
A_A2
D8
E4 A_A20
A_A21
M4
ATCK_CTS1
ATDI_RTS1 L5
T13
ATDO_PWM2
ATMS_PIO45 K12
B7 A_A0
C8 A_A1
A3 A_A10
A_A11
TRIDENT-HP
U200
G1
VCCB
VCCB
NC
R219
C209
100NF
R206 100K
U204
TC7SH32FU(TE85L)
A2
B1
GND
3
VCC
5
Y
4
100K
R215
R213
100K
DTA144EM
Q201
1
3
2
1K
R216
USB_3.3V
C207
10NF
C205
100NF
R220
VCCD_1.5
R211
0
R200 NC
47K
VCCD_1.8
CC4V-T1 32.768KHz 9pF
OSC200
R212 24
JIG_ON
BP_VF
BL_LED_EN
DIMMING_EN
USB_DMNS
TR_RST
FLASH_RESET
USB_CON
SDS_TXD
SDS_RXD
JIG_ON
VBAT
CP_TDO
CP_TDI
CP_TMS
CP_TCK
RST
CP_WEN
ANT
USB_OEN
USB_SUSP
LOWER_BYTE
KEY_ROW(0:4)
A(0)
A(25)
D(0:15)
A(0:25)
USB_DET
CAM_FLASH
SUB_BYPASS_CS
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(1)
DSP_DB(0)
DSP_DB(0:15)
FLASH_RST
RST
FLASH_RESET
USB_VPI
USB_VPO
USB_DPLS
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DEBUG_RTS
DEBUG_DCD
DEBUG_DSR
DEBUG_RI
KEY_COL(0:4)
KEY_COL(2)
KEY_COL(1)
KEY_COL(0)
KEY_ROW(3)
KEY_ROW(2)
KEY_ROW(1)
KEY_ROW(0)
KEY_ROW(4)
KEY_COL(3)
PSW1_BUF
YMU_IRQ
USB_VPI
USB_VMO
USB_DATA
USB_VPO
USB_OEN
UP_SCLK
UP_SDO
IRDA_TX
UP_SDI
IRDA_RX
SDS_TXD
SDS_RXD
DEBUG_TXD
DEBUG_CTS
DEBUG_RXD
DEBUG_DTR
YMU_CS
UPPER_BYTE
DSP_AB(0:8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
DSP_AB(8)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
CP_WEN
CP_OEN
RAM1_CS
LCDC_CS
ROM2_CS
RAM2_CS
ROM1_CS
A(11)
A(2)
A(1)
USB_VMO
USB_DATA
USB_VMI
A(22)
A(23)
A(24)
D(15)
D(14)
D(13)
D(12)
D(11)
D(10)
D(9)
A(8)
A(7)
A(6)
A(5)
A(4)
A(21)
A(3)
A(20)
A(19)
A(18)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
SIMRST
USB_VMI
IRDA_EN
USB_SUSP
LCDC_INT
CLK32K
KEY_COL(4)
JACK_IN
INTRQ
DSP_IO
DSP_INT
CLK13M_TR
CP_TMS
CP_TDO
CP_TDI
CP_TCK
A(10)
A(9)
TR_RST
DSP_TMS
DSP_TDO
DSP_TDI
DSP_TCK
UP_CS
SIMDATA
SIMCLK
DSP_RWN
RTCALARM
USB_CON
DLC_DETECT
EAR_SWITCH
AUDIO_OUT_SEL
USB_DET
XOENAQ
PWR_KEEP

SAMSUNG Proprietary-Contents may change without notice
SGH-S342i Flow Chart of Troubleshooting
2-15
This Document can not be used without Samsung's authorization
MEMORY
CAM ASIC
6.3V
10UF
C301
VCCD_1.8
C313
100PF
VSS C4
L1
VSS
VSS L2
L5
VSS
VSS L6
L7
VSS
VSS L8
G7
WAIT
R-WE# D5
J1
S-CS1#
S-CS2 C5
S-VCC K4
J8 VCCQ
VCCQ
K7
L3 VCCQ
B4
VSS
2
NC
P-MODE/P-CRE
K8
K5
P-VPP
D6
P1-CS#
P2-CS# K2
C2
R-LB#
R-OE# H1
R-UB# F3
B5 F1-VCC1
F1-VCC1
L4
F2-CE#2
G8
F2-OE#2
H8
B6 F2-VCC
F2-VCC
K6
K3 F3-CE#
NC 1 DU
A7
A8 DU
F4 F-RST#
F-VPP,F-VPEN D4
F-WE#
F5
F-WP# E4
K1 F1-CE#1
J2 F1-OE#1
D8 G2
J3
D9
M1
DU
DU M2
M7
DU
DU M8 DU
A1
A2 DU
D14 H6
J7
D15
D2 G3
H4
D3
D4 J5
G5
D5
D6 J6
H7
D7
E5
AVD#
C6
CLK
D0 H2
H3
D1
D10 G4
J4
D11
D12 H5
D13 G6
A25
E3
A3
D1
B1 A4
A5
C1
F2 A6
A7
E2
F6 A8
A9
D7
B2 A18
A19
B3
E1 A2
E6 A20
A21
B7
C7 A22
C3 A23
A24
D3
E7 A10
A11
B8
C8 A12
A13
D8
F7 A14
A15
E8
F8 A16
A17
D2
U300
G1 A0
A1
F1
C300
100NF
C311
100NF
100NF
C315
VCCD
A
2
GND
3
VCC 51 VCC1
4
Y
VCCD_1.8
VCC_CAM
U303
C5
C303
100NF
C9
TESTEN
VCP
P3
K4
VSS1 G4
VSS2 D6
VSS3
VSS4 L7
C8
VSS5 L9
VSS6 J11
VSS7
A6 WAIT#
WE#
PLLVDD
PLLVSS
N3
A7 RD#
RESERVED1 G1
RESERVED2 F1
RESET#
B8
C6 SA0
SCANEN
C14
B5 SCK#
G2 SCS#
A8 SI
P1
A14
NC3
NC4 P14
E5
NC5
NC6 1
2
NC7
NT
C7
F11 PIOVDD1
PIOVDD2
C10
L12 PIOVDD3
PIOVDD4
D8
M4
GPIO6
B11
L14 GPIO7
GPIO8
B10
L13 GPIO9
L4 HIOVDD1
HIOVDD2
F4
D7 HIOVDD3
HIOVDD4
D5
B4 M|R#
A1
NC1
NC2
GPIO15
GPIO16
A13
B14 GPIO17
GPIO18
B13
A2 GPIO19
GPIO2
M12
GPIO20
P13
B2 GPIO21
N12 GPIO3
GPIO4
M13
M14 GPIO5
F14
K12
FPSO A9
FPVIN1
FPVIN2 B9
GPIO0
A10
P12 GPIO1
GPIO10
P2
N2 GPIO11
GPIO12
N1
GPIO13
N14
GPIO14
N13
B1
FPDAT3 E14
E13
FPDAT4
FPDAT5 E12
D14
FPDAT6
FPDAT7 G14
C12
FPDAT8
FPDAT9 G12
C13
FPFRAME
D12
FPLINE
F13
FPSCLK
FPSHIFT
FPDAT0
FPDAT1 B12
K13
FPDAT10
FPDAT11 K14
J13
FPDAT12
FPDAT13 J12
H12
FPDAT14
FPDAT15 D13
H13
FPDAT16
FPDAT17 H14
F12
FPDAT2
L3
M3
DB4
DB5 L2
M2
DB6
DB7 D2
D3
DB8
DB9 D4
C11 DRDY
FPA0 J14
G13
FPCS1X
FPCS2X A11
A12
CS#
C4
A4
DB0
DB1 A3
E4
DB10
DB11 E3
E2
DB12
DB13 E1
F3
DB14
DB15 F2
B3
DB2
DB3
CM2VREF N7
G11
CNF0
CNF1 L11
K11
CNF2
CNF3 D9
E11
CNF4
CNF5 D11
L10
CNF6
L5
COREVDD1
COREVDD2 D10
H11
COREVDD3
M7
P7
CM2CLKOUT
P4 CM2DAT0
CM2DAT1
N4
N5 CM2DAT2
CM2DAT3
M5
L6 CM2DAT4
CM2DAT5
M6
P5 CM2DAT6
CM2DAT7
N6 CM2HREF P6
N9 CM1DAT0
CM1DAT1
P9
N10 CM1DAT2
CM1DAT3
M10
M11 CM1DAT4
CM1DAT5
N11
P10 CM1DAT6
CM1DAT7
P11
CM1HREF M8
CM1VREF N8
CM2CLKIN
AB5
AB6
H4
J1 AB7
AB8
J3
J2 AB9
BE#0
B6
BE#1
A5
L8 CIOVDD
M1
CLKI
CM1CLKIN M9
CM1CLKOUT P8
AB11
AB12
K1
K2 AB13
AB14
L1
C3 AB15
AB16
C2
C1 AB17
AB18
D1
AB2
B7
H2 AB3
AB4
G3
H3
U301
H1 AB1
AB10
J4
K3
TP300
VCCD
VCCD
VCCD_1.8
100NF
C307
VCCD_1.8
VCCD_1.8
VBAT
VCCD_1.8
100NF
C302
R303
0
22K
R300
R304
VCCD_1.8
0
C304
100NF
C312
10NF
100NF
C309
100NF
C310
5
OUT
U302
4
BYP
EN
3
2GND
1IN
VCCD_1.8
100NF
C306C305
10NF
100PF
C308
4.7K
R301
R305
0
4.7K
R302
VCC_CAM
100PF
C314
LCD_RS
D(14)
D(0:15)
CAM_SCL
A(1)
VCCD_1.8
SUB_BYPASS_CS
CAM_RST
CAM_RST
CAM_RESET
LCD_D(7)
Y(0:7)
Y(6)
Y(7)
Y(5)
Y(4)
Y(3)
Y(2)
Y(0)
Y(1)
LCD_WEN
PCLK
MCLK
HZREF
VTREF
CLK32K
D(13)
LCD_D(0:15)
UPPER_BYTE
LCDC_CS
A(19)
LCDC_INT
CP_WEN
CP_OEN
FLASH_RST
LCD_D(0)
LCD_D(1)
LCD_D(2)
LCD_D(3)
LCD_D(4)
LCD_D(5)
LCD_D(6)
D(0)
D(1)
D(2)
D(4)
D(5)
D(6)
D(7)
D(8)
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(3)
A(1:18)
CAM_SDA
CAMPWR_EN
D(15)
LOWER_BYTE
LCD_D(10)
LCD_D(11)
LCD_D(12)
LCD_D(13)
LCD_D(14)
LCD_D(15)
LCD_D(8)
LCD_D(9)
D(6)
D(7)
D(8)
D(9)
D(10)
D(11)
D(12)
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(0:15)
CAMPWR_EN
A(1)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
A(17)
A(18)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
LCD_CS
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(0)
D(1)
A(1:25)
UPPER_BYTE
CP_OENFLASH_RST
CP_WEN
ROM1_CS
CP_OEN
ROM2_CS
RAM1_CS
RAM2_CS
LOWER_BYTE
CP_WEN
D(0:15)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)A(18)
A(19)
A(20)
A(3)
A(21)
A(22)
A(23)
A(24)
A(25)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(1)
A(2)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
A(17)

SAMSUNG Proprietary-Contents may change without notice
SGH-S342i Flow Chart of Troubleshooting
2-16
This Document can not be used without Samsung's authorization
EAR_MIC_P
EAR_SPK_N
AUDIO
EAR_MIC_N
EAR_SWITCH
EAR_SPK_P
JACK_IN
C423
470PF
R421
39K,1%
100NF
C435
R40139
VCCA
1UF
C422
C418
100NF
39
R440
390PF
C416
220
C434
NC
180K
R419
R423
10K,1%
R407
C428
180PF
BLM10B750SBPT
L400
C414
10PF
NC
C433
470PF
C421
VCCD_1.8
10K,1%
R420
VBAT
10PF
C408
2.2K,1%
R405
C403
22NF
R403
39R400
43K
V+
R418
2.2K,1%
14
GND 6
4IN1
8
IN2
5NC1
7
NC2
2NO1
10
NO2
1
MAX4684ETB
U400
COM1
3
COM2 9
11
GG
12 13
GG
R441
39
C431
NC
R410
10K,1%
C413
1UF
C427
100NF
C410
1UF
C401
220PF
VC040205X150R
V402
1
2
34
5
6
ESDA6V1-5P6
ZD400
G
11 12
GG
13 14
G
33
44
55
66
77
88
99
1674787-1
CN400
11
10 10
22
R411
0
100NF
C400
NC
C426
VCCD
R402
150K
VBAT
NC
C430
7
VDD
9
VREF
VSS
8
/CS
29
3
/IRQ
/RD
31
/RST
4
28
/WR
LED
2
19
MTR
5
NC
PLLC
6
17
SPOUT1
SPOUT2
18
15
SPVDD
SPVSS
16
EQ3
14
33
G
G
34 35
G
G36
HPOUT-L/MONO
10
11
HPOUT-R
IOVDD
32
25
D2
D3
24 23
D4
D5
22 21
D6
D7
20
EQ1
12
13
EQ2
U401
30
A0
1
CLKI
D0
27
26
D1
R417
2.2K,1%
C425
33PF
6.3V
C404
10UF
C419
390PF
10K,1%
R406
75K
R425
R422
100K
R424
2.2K,1%
C412 10UF
10V
VC040205X150R
ZD401
22NF
C429
C417
1NF
C402
220PF
C409
VCCD_1.8
100NF
C411
10UF
10V
ICEBERG-FPCB
MAIN1
3.3K
75K
R414
R413
0
C406
33PF
R404
R412
6.3V
18K
6.3V
33UF
C420
R427
10UF
C415
V401
VC040205X150R
39K,1%
C405
1UF
L401
BLM10B750SBPT
AUXINP
YMU_SPK1P
AOUTAP
AOUTAN
SPK1P
SPK1N
EAR_SWITCH
AUDIO_OUT_SEL
AOUTBP
AOUTBN
A(0)
MICINP
MICINN
AUXOUTN
AUXINN
JACK_IN
YMU_SPK1N
YMU_CS
AUXOUTP
MICOUTP
MICOUTN
YMU_IRQ
RST
D(5)
D(6)
D(7)
D(4)
D(3)
D(1)
D(0)
CP_WEN
CP_OEN
D(2)
YMU_SPK1P
CLK13M_YMU
YMU_SPK1N
YMU_VIB_EN

SAMSUNG Proprietary-Contents may change without notice
SGH-S342i Flow Chart of Troubleshooting
2-17
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VIBRATION
EMI FILTER
IRDA
KEY
BACK LIGHT LED
LCD CONNECTOR
R518
82
C501
100NF
12
1
1
2
2
33
4
4
55
SEND
KEY-XBS
5POINT-VOLUME
VOL500
C507
10UF
6.3V
KEY-XBS
PWR
12
AOT-0603P-B01-
ALED514
KEY-XBS
UP
12
5
IN
6
IN
OUT
7
8OUT
9OUT
OUT
10
F502
NFA21SL307X1A45L
1
GG
2
IN 3
IN 4
ZD506
AVLC5S02100
33PF
C509
VCCD_1.8
IWS-164-WXWFLED510
VBAT
C508
33PF
LED509
AOT-0603P-B01-
A
AVLC 5S 02 100
ZD516
V501
VC040205X150R
LED501
AOT-0603P-B01-
A
150
R517
33PF
C502
C519
470PF
IN 4
5
IN
6
IN
OUT
7
8OUT
9OUT
OUT
10
F504
NFA21SL307X1A45L
1
GG
2
IN 3
AVLC 5S 02 100
ZD518
CLEAR
KEY-XBS
12
0
KEY-XBS
12
AOT-0603P-B01-
ALED513
12
150
R519
LED506
AOT-0603P-B01-
A
KEY-XBS
SHARP
12
VCCD
AOT-0603P-B01-A LED516
KEY-XBS
5
LED507
AOT-0603P-B01-
A
200
R516
150
R515
C510
33PF
8OUT
9OUT
OUT
10
F503
NFA21SL307X1A45L
1
GG
2
IN 3
IN 4
5
IN
6
IN
OUT
7
12
4
KEY-XBS
12
AVLC5S02100
ZD501
STO
KEY-XBS
C506
470nF
R525
LED515
47K
2
KEY-XBS
3
12
AOT-0603P-B01-A
DOWN
KEY-XBS
1
KEY-XBS
9
12
33PF
C511
KEY-XBS
LEFT
12
82
R514
100
R513R512
200150
R511
150
R509
100
R510
12
VCC_CAM VBAT
2
KEY-XBS
VCCD
ZD510
ZD504
R529
150
R528
390330
R527
150150
R526
6
KEY-XBS
12
R520
VBAT
9OUT
OUT
10
33PF
C512
1
GG
2
IN 3
4
IN
5
IN
6
IN
7OUT
OUT
8
4.7UF
C504
F500
NFA21SL307X1A45L
ZD505
AVLC 5S 02 100
ZD517
150PF
C517
C505
100NF
150PF
C515
MENU
KEY-XBS
12
I
KEY-XBS
12
ZD503
C514
33PF
ZD502
8OUT
9OUT
OUT
10
F505
NFA21SL307X1A45L
1
GG
2
IN 3
IN 4
5
IN
6
IN
OUT
7
6.3V
10UF
C518
AOT-0603P-B01-
A
LED508
8
KEY-XBS
12
AOT-0603P-B01-
A
LED502
150PF
ZD509 C516
68
R504
LED504
AOT-0603P-B01-
A
C503
33PF
ZD508
KEY-XBS
1
12
ZD507
4
IN
IN 5
IN 6
7OUT
OUT
8
OUT
9
10 OUT
NFA21SL307X1A45L
F506
G
12
G
3
IN
330NF
AVLC 5S 02 100
ZD519
BYPCTL
GND
VIN VOUT
C500
LED503
MIC5219-3.3BM5
U702
AOT-0603P-B01-
ALED512
VCCD_1.8
AOT-0603P-B01-
A
68
VBAT
R503
C513
33PF
5
IN
6
IN
OUT
7
8OUT
9OUT
OUT
10
F501
NFA21SL307X1A45L
1
GG
2
IN 3
IN 4
CAM
4POINT-VOLUME
11
2
2
3
3
44
6VCC
LED500
HSDL-3209
7GND
IOVCC
5
LEDA
1
RXD
2
4SD
3TXD
LED511
AOT-0603P-B01-
A
50 50
6
6
7
78 8
9
9
43 44 44
45 45 46 46
47 47 48 48
49 49
5
5
36
37
37 38
38
39
39
4
4
40
40
41 41 42 42
43
29
29
3
3
30
30
31
31 32
32
33
33 34
34
35
35 36
21
21 22
22
23
23 24
24
25 25 26
26
27
27 28
28
14
15
15 16
16
17
17 18
18
19
19
2
2
20
20
CN500
1
1
10
10
11
11 12
12
13
13 14
ZD500
AVLC 5S 02 100
14-5602-050-001-829
2
AOT-0603P-B01-
A
LED505
KEY-XBS
7
12
KEY-XBS
RIGHT
1
KEY-XBS
*
12
YMU_VIB_EN
KEY_BACKLIGHT
LCDVIB_EN
FLASH_RST
BL_LED_EN
CAM_SDA
CAM_SCL
MCLK
PCLK
KEY_COL(4)
KEY_ROW(1)
KEY_ROW(2)
LCD_D(9)_FO
LCD_D(15)_FO
LCD_D(1)_FO
LCD_D(11)_FO
LCD_D(5)
LCD_D(3)
LCD_D(7)
LCD_D(13)
LCD_D(5)_FO
LCD_D(3)_FO
LCD_D(13)_FO
LCD_D(7)_FO
LCD_CS
LCD_WEN
LCD_RS_FO
LCD_CS_FO
LCD_WEN_FO
LCD_RS
CAM_FLASH
CAM_FLASH_FO
IRDA_RX
CAM_Y(5)
CAM_Y(4)
CAM_Y(7)
CAM_Y(6)
CAM_Y(1)
CAM_Y(0)
CAM_Y(3)
CAM_Y(2)
Y(5)
Y(7)
Y(6)
Y(4)
Y(1)
Y(3)
Y(2)
Y(0)
LCD_D(9)
LCD_D(15)
LCD_D(1)
LCD_D(11) LCD_D(12)
LCD_D(4)
LCD_D(2)
LCD_D(14)
LCD_D(6)_FO
LCD_D(14)_FO
LCD_D(12)_FO
LCD_D(10)_FO LCD_D(10)
LCD_D(8)_FO
LCD_D(0)_FO
LCD_D(2)_FO
LCD_D(4)_FO
LCD_D(8)
KEY_ROW(3)
KEY_ROW(0)
KEY_COL(3)
KEY_COL(1)
DIMMING_EN
LCD_D(3)_FO
HZREF
VTREF
CAM_RESET
LCD_D(0)
LCD_D(6)
LCD_D(10)_FO
LCD_D(8)_FO
LCD_D(0)_FO
LCD_D(2)_FO
LCD_D(4)_FO
CAM_FLASH_FO
LCD_RS_FO
CAM_Y(3)
SPK1P
CAM_Y(6)
CAM_Y(4)
CAM_Y(2)
CAM_Y(0)
LCD_D(15)_FO
LCD_D(11)_FO
LCD_D(9)_FO
LCD_D(1)_FO
LCD_D(13)_FO
LCDVIB_EN
SPK1N
LCD_WEN_FO
LCD_CS_FO
CAM_Y(5)
CAM_Y(7)
LCD_D(6)_FO
LCD_D(14)_FO
LCD_D(12)_FO
CAM_Y(1)
KEY_COL(0:4)
KEY_COL(2)
KEY_COL(0)
KEY_ROW(0:4)
KEY_ROW(4)
PWR_ON
IRDA_TX
IRDA_EN
LCD_D(5)_FO
LCD_D(7)_FO