Samsung SGH-E850 User manual

GSM TELEPHONE
SGH-E850
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-E850 Specification
This Document can not be used without Samsung's authorization
1-1
GSM900 DCS1800
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
ARFCN range 975~1023
0~124 512~885
Tx/Rx spacing 45MHz 95MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 30dBm~0dBm
Power Class 5pcl~19pcl 0pcl ~ 15pcl
Sensitivity -102dBm -100dBm
TDMA Mux 8 8
Cell Radius 35km -

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2. SGH-E850 Flow Chart of Troubleshooting
2-1
This Document can not be used without Samsung's authorization
1.Baseband
1. Power ON
Power On does not work
Voltage >= 3.3V
Download again
Charge the Battery
Check U100 and C110
pin#A13 and pin#A14
=2.8V
Check U100 and C113
Freq = 13MHz ,
Vrms ≥300mV
and
Vpp 뵃900mVpp
Check the clock generation circuit
(related to OSC300)
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
Check the V bat. Voltage
Check the pin of U100
Checktheclocksignalatpin#8ofU700
Check the initial operation
Check the current consumption
Current consumption
>=100mA
pin#G11 =
1.8V
pin#J12 >=
2.8V

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SGH-E850 Flow Chart of Troubleshooting
2-3
This Document can not be used without Samsung's authorization
ID
IAD
SIMCLK SIMDATA SIMRST SIMVCC
NR
IAD
KC
IAD
OD
IAD
100NF
C119
56PF C100
2.2UF C104
VCCD
VCCA
0
2.7K
R120
R118
C122
1UF
6 7
GG
89
GG
10
CN100
1
1 22
3
34
4 55
6
401PT
NC
C121
NCR711
100K
R121
C110
470nF
VCCB
TP109
201PT
VBAT
R105 0
R102 1.2K
41R
NG
ERV
31M
PG
ERV
H11
VRTC
K12
VSIM
1SSV
5G
4K2SSV
2R3SSV
6P4SSV
31R
M
CVXV
1D
QANEOX
B11
VL4S_B
D10
VL5S_A VL5S_B C9
G11
VLDO_1
J12
VLDO_2
A13
VLDO_3
B12
VLDO_4
B10
VLDO_5
A14
VLDO_6
C12
VLDO_7
A10
VREF
76DDV
6ABDDV
11NDDDV
VDDV
11L
5N1O
I_DDV
4J2O
I_DDV
4CLTCO
_DDV
E14
VEXT
F15
VIB_DRV
9L
NE_GNR
_B
IV
A12
VL4S_A
P10
UP_IO
R10
UP_RST
F14
VAC C
E13
VBAT
3J1DDV
J13
VDD12
3M2DDV
3DDV
6N
C11
VDD34
01C5DDV
31B
SDI_PSC M7
N7
SDO_PSC
C2 SERCK
SERDA
C1
SERLE1
B1
SERLE2
A2
K14
SIM_CLK
J11
SIM_IO
SIM_RST K11
7E
PXT
N9
UP_CLK
RESETN_CSP
9K
O
_TESER
F13
RING_DRV
RTC_ALMN H10
4N
KLC
_CTR
L2 RWN
6D
N
IXTXR
7D
P
IXTXR
6C
NQXTXR
7C
PQXTXR
L8
SCLK_PSC
OCTL4
A4
OCTL5
G6
B3 OCTL6
OCTL7
A3
7L
FUB_1W
SP
9M
PEEK
_RW
P
51C
N
1W
S
_RW
P
41C
2W
S
_RW
P
6B
1FERAR
5B
2FERAR
R3
41N
PN
IC
IM
51P
NTUOC
IM
51N
PTUOC
IM
01N
EDOM
5CN
1
26CN
5P
7CN
E6 OCTL0
OCTL1
C5
F5 OCTL2
OCTL3
E5
11FRUCH
_DNG
4BLTCO
_DNG
51B1CSP_DNG
51K2CSP_DNG
01L
QRTN
I
I|O
L3
G13
LED1_D RV
G12
LED2_D RV
6R
CM
41M
NN
IC
IM
01J61SDNG
01K71SDNG
8F2SDNG
9F3SDNG
01F4SDNG
7G5SDNG
8G6SDNG
9G7SDNG
01G8SDNG
6H9SDNG
31PVDNG
RTN
ID
6FBDNG
01MDDNG
8EQDNG
7F1SDNG
7H01SDNG
11SDNG
8H21SDNG
9H
7J31SDNG
8J41SDNG
9J51SDNG
D3 DB14 D2 DB15 K3 DB2
J5 DB3 J6 DB4
H5 DB5
G3 DB6 G4 DB7
F4 DB8 F1 DB9
3P
CSN_PSC K8
4R
KC
IAD
ID
IAD6L
6M
OD
IAD
4P
NR
IAD
K1 DB0
DB1
K2
F2 DB10 F3 DB11
E2 DB12 E3 DB13
NBTUOA
PBTUOA21R
41L
NN
IXUA
51M
PN
IXUA
31L
NTUOXUA
31K
PTUOXUA
31D3CDA_XUA
E11
CH_BD RV
F12
CH_ISEN D14
CH_RES
CREF E9
N1 N2 AB4
AB5
M2
AB6
M1
AB7
K7 K5 AB8
E10
ADC_AUX1
D15
ADC_AUX2
9D
CFA
21N
NATUOA
11P
PATUOA
21P
U100
K6 AB0
AB1
P1
L5 AB2
AB3
100PF C107
0
VBAT
R709
VRF
VCCD
C126
470NF
VCC_1.8A
VCCD
N
20V
I_414BR
M100
NEG
2
POS
1
301PT
U102
C123 56PF
C109
1UF
101PT
VCCA
10V
10UF
C117
33PF C106
U101
MAX4840
2.2UF C108
0R109
001R0
R116 10
NC
C120
VRTC
0
R119
33PF C105
C118 10V 10UF
R114
FN
001611C
0
470nF C112
C103
100NF
10UF
10V
C114
4.7UF C113
C125 470nF
100NF
C101
VCCD
470nF C111
D1
2
D
5D
D
6
3
G
4S
301U
HD
6241
IS
VBAT
33PF C102
3 2
R107 0
DTC144EM Q101
1
6.3V
2.2UF
C124
C115 10NF
CP_INT
TA_VEXT
SVC_LED
RST
SVC_LED
TX_BAND_SEL
TX_EN
SERDAT
DSP_DB(0:15)
DSP_AB(0:8)
CHG_ONICHRG
MICINP
AUXINP
DCS_TX_EN GSM_TX_EN
CHG_DET
RTX_QP
RTX_QN
PATUOA
PGERV
CM
_M
31KLC
NO
_G
IJ
KEY_ROW(0)
DSP_IO
CSP_RESET
DSP_AB(1) DSP_AB(0)
VREF
DSP_DB(1) DSP_DB(6) DSP_DB( 11) DSP_DB(12) DSP_DB(10)
DSP_RWN
SI_EN
SERLE
SERCLK
RTX_IP
RTX_IN
DSP_DB(0)
UP_CS
PTUO
XUA
NTUO
XUA
NN
IXUA
PBTUOA
NBTUOA
NATUOA
AFC
DSP_AB(8) DSP_AB(7) DSP_AB(6) DSP_AB(5) DSP_AB(4) DSP_AB(3) DSP_AB(2)
PTUOC
IM
NTUOC
IM
NN
IC
IM
BACKLIGHT
TN
I_PSD
DSP_DB(9) DSP_DB(8) DSP_DB(7) DSP_DB(5) DSP_DB(4) DSP_DB(3) DSP_DB(2) DSP_DB(15) DSP_DB(14) DSP_DB(13)
KEY_COL(2)
SIMRST SIMDATA SIMCLK
TXPOWER
UP_SDI UP_SCLK
K
23KLC
RTCALARM
NO
_RW
P
PWR_KEEP

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SGH-E850 Flow Chart of Troubleshooting
2-2
This Document can not be used without Samsung's authorization
2. Initial
The pin #G11 of
U100 = 1.8V and
the pin #J12 of U100
뵃2.825V ?
Initialization Failure
Check the U100
(If it has some problem, it has to
be replaced.)
END
No
Yes
Is the pin #K9 of
U100
"Low->High"?
Yes
Check the OSC600
There is 32.768kHz
wave forms at the
C614 and C615
Check the LCD Part
Yes
No
No
Yes
Yes
Yes
The Voltage is "High"
at the
C112,C108,C109
Check the Audio Part
No
Check the U100
(If it has some problem, it has to
be replaced.)
Check the OSC300
The pin #3 of
OSC300
Check the U100
LCD display is O.K No
No
Yes
Yes
Sound is O.K
No

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SGH-E850 Flow Chart of Troubleshooting
2-4
This Document can not be used without Samsung's authorization
2
34
1
OSC600
VBAT
100NF
C616
R610
0
0
R609
XRTCALARM_N E8
XTIC_MODE D12
C6
XOSC32OUT
B7
XCPTSTSTOP_CKO M12
X1RTC A7
D10
X2RTC
B11
XAG0
XAG1 A11
XAG2 E11
D11
XAG3
XBSWN
C614
12PF 12PF
C615
330K,1%
R611
330K,1%
R613
R605 100K
R608 0
R606
10K,1%
ICHRG
TEMP
BP_VF
CLK32K
RTCALARM
RST
2.7K
10NF
R314
C302
10NF
C301
560
R315
VRF
R317
10NF
C308
10NFC304
100K
1NFC303
1
OSC300
BUFFIN
56
BUFFOUT
2
GND
3
OUT VCC
4
VCONT
10NFC306
R323
150
R312 100
10NF
C300
CLK13M_TR
CLK13M_MC
CLK13M_RF
CLK13M_YMU
AFC

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SGH-E850 Flow Chart of Troubleshooting
2-5
This Document can not be used without Samsung's authorization
I
D
I
A
D
SIMCLK SIMDATA
SIMRST
SIMVCC
N
R
I
A
D
K
C
I
A
D
O
D
I
A
D
100NF
C119
56PF
C100
2.2UF
C104
VCCD
VCC
A
0
2.7K
R120
R118
C122
1UF
6
7
GG
89
GG
10
CN100
1
1
22
3
34
4
55
6
4
0
1
P
T
NC
C121
NCR711
100K
R121
C110
470nF
VCCB
TP109
2
0
1
P
T
VBAT
R105 0
R102
1.2K
4
1
RN
G
E
R
V
3
1
MP
G
E
R
V
H11
VRTC
K12
VSIM
1
S
S
V5
G
4
K
2
S
S
V
2
R
3
S
S
V
6
P
4
S
S
V
3
1
RM
C
V
X
V
1
DQ
A
N
E
O
X
B11
VL4S_B
D10
VL5S_A
VL5S_B C9
G11
VLDO_1
J12
VLDO_2
A13
VLDO_3
B12
VLDO_4
B10
VLDO_5
A14
VLDO_6
C12
VLDO_7
A10
VREF
7
6
D
D
V
6
A
B
D
D
V
1
1
N
D
D
D
V
V
D
D
V1
1
L
5
N
1
O
I
_
D
D
V
4
J
2
O
I
_
D
D
V
4
C
L
T
C
O
_
D
D
V
E14
VEXT
F15
VIB_DRV
9
LN
E
_
G
N
R
_
B
I
V
A12
VL4S_A
P10
UP_IO
R10
UP_RST
F14
VAC C
E13
VBAT
3
J
1
D
D
V
J13
VDD12
3
M
2
D
D
V
3
D
D
V6
N
C11
VDD34
0
1
C
5
D
D
V
3
1
B
SDI_PSC M7
N7
SDO_PSC
C2 SERCK
SERDA
C1
SERLE1
B1
SERLE2
A2
K14
SIM_CLK
J11
SIM_IO
SIM_RST K11
7
EP
X
T
N9
UP_CLK
RESETN_CSP
9
KO
_
T
E
S
E
R
F13
RING_DRV
RTC_ALMN H10
4
NK
L
C
_
C
T
R
L2 RWN
6
DN
I
X
T
X
R
7
DP
I
X
T
X
R
6
CN
Q
X
T
X
R
7
CP
Q
X
T
X
R
L8
SCLK_PSC
OCTL4
A4
OCTL5
G6
B3 OCTL6
OCTL7
A3
7
LF
U
B
_
1
W
S
P
9
MP
E
E
K
_
R
W
P
5
1
CN
1
W
S
_
R
W
P
4
1
C2
W
S
_
R
W
P
6
B1
F
E
R
A
R
5
B2
F
E
R
A
R
R3
4
1
NP
N
I
C
I
M
5
1
PN
T
U
O
C
I
M
5
1
NP
T
U
O
C
I
M
0
1
NE
D
O
M
5
C
N1
2
6
C
N
5
P7
C
N
E6 OCTL0
OCTL1
C5
F5 OCTL2
OCTL3
E5
1
1
F
R
U
C
H
_
D
N
G
4
B
L
T
C
O
_
D
N
G
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
0
1
LQ
R
T
N
I
I|O
L3
G13
LED1_DRV
G12
LED2_DRV
6
RC
M
4
1
MN
N
I
C
I
M
0
1
J
6
1
S
D
N
G
0
1
K
7
1
S
D
N
G
8
F
2
S
D
N
G
9
F
3
S
D
N
G
0
1
F
4
S
D
N
G
7
G
5
S
D
N
G
8
G
6
S
D
N
G
9
G
7
S
D
N
G
0
1
G
8
S
D
N
G
6
H
9
S
D
N
G
3
1
P
V
D
N
G
R
T
N
I
D
6
F
B
D
N
G
0
1
M
D
D
N
G
8
E
Q
D
N
G
7
F
1
S
D
N
G
7
H
0
1
S
D
N
G
1
1
S
D
N
G8
H
2
1
S
D
N
G9
H
7
J
3
1
S
D
N
G
8
J
4
1
S
D
N
G
9
J
5
1
S
D
N
G
D3 DB14
D2 DB15
K3 DB2
J5 DB3
J6 DB4
H5 DB5
G3 DB6
G4 DB7
F4 DB8
F1 DB9
3
P
CSN_PSC K8
4
RK
C
I
A
D
I
D
I
A
D
6
L
6
MO
D
I
A
D
4
PN
R
I
A
D
K1 DB0
DB1
K2
F2 DB10
F3 DB11
E2 DB12
E3 DB13
N
B
T
U
O
A
P
B
T
U
O
A
2
1
R
4
1
LN
N
I
X
U
A
5
1
MP
N
I
X
U
A
3
1
LN
T
U
O
X
U
A
3
1
KP
T
U
O
X
U
A
3
1
D
3
C
D
A
_
X
U
A
E11
CH_BDRV
F12
CH_ISEN D14
CH_RES
CREF E9
N1
N2 AB4
AB5
M2
AB6
M1
AB7
K7
K5 AB8
E10
ADC_AUX1
D15
ADC_AUX2
9
DC
F
A
2
1
NN
A
T
U
O
A
1
1
PP
A
T
U
O
A
2
1
P
U100
K6 AB0
AB1
P1
L5 AB2
AB3
100PF
C107
0
VBAT
R709
VRF
VCCD
C126
470NF
VCC_1.8A
VCCD
N
2
0
V
I
_
4
1
4
B
R
M100
NEG
2
POS
1
3
0
1
P
T
U102
C123
56PF
C109
1UF
1
0
1
P
T
VCCA
10V
10UF
C117
33PF
C106
U101
MAX4840
2.2UF
C108
0R109
0
0
1
R
0
R116 10
NC
C120
VRTC
0
R119
33PF
C105
C118
10V
10UF
R114
F
N
0
0
1
6
1
1
C
0
470nF
C112
C103
100NF
10UF
10V
C114
4.7UF
C113
C125 470nF
100NF
C101
VCCD
470nF
C111
D
1
2D5
D
D6
3G4
S
3
0
1
U
H
D
6
2
4
1
I
S
VBAT
33PF
C102
3
2
R107 0
DTC144EM
Q101
1
6.3V
2.2UF
C124
C115
10NF
CP_INT
TA_VEXT
SVC_LED
RST
SVC_LED
TX_BAND_SEL
TX_EN
SERDAT
DSP_DB(0:15)
DSP_AB(0:8)
CHG_ONICHRG
MICINP
AUXINP
DCS_TX_EN
GSM_TX_EN
CHG_DET
RTX_QP
RTX_QN
P
A
T
U
O
A
P
G
E
R
V
C
M
_
M
3
1
K
L
C
N
O
_
G
I
J
KEY_ROW(0)
DSP_IO
CSP_RESET
DSP_AB(1)
DSP_AB(0)
VREF
DSP_DB(1)
DSP_DB(6)
DSP_DB(11)
DSP_DB(12)
DSP_DB(10)
DSP_RWN
SI_EN
SERLE
SERCLK
RTX_IP
RTX_IN
DSP_DB(0)
UP_CS
P
T
U
O
X
U
A
N
T
U
O
X
U
A
N
N
I
X
U
A
P
B
T
U
O
A
N
B
T
U
O
A
N
A
T
U
O
A
AFC
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
P
T
U
O
C
I
M
N
T
U
O
C
I
M
N
N
I
C
I
M
BACKLIGHT
T
N
I
_
P
S
D
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
KEY_COL(2)
SIMRST
SIMDATA
SIMCLK
TXPOWER
UP_SDI
UP_SCLK
K
2
3
K
L
C
RTCALARM
N
O
_
R
W
P
PWR_KEEP

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-6
This Document can not be used without Samsung's authorization
3. Sim Part
Check the Voltage
at pin#1 of
CN100 ≥2.8V
"Insert SIM" is displayed on the LCD
Check the U100
Check the SIM Card
END
No
Yes
Yes
Yes
No Check the U600
Is there any
Signals
pin#2, #3, #4 of
CN100?
Check the SIM
connector's(CN10
0) connection to
SIM card
Resolder or change CN100
Yes
No

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SGH-E850 Flow Chart of Troubleshooting
2-7
This Document can not be used without Samsung's authorization
SIMCLK SIMDATA
SIMRST
SIMVCC
C102
33PF
C105
33PF
C106
33PF
C103
100NF
C104
2.2UF
334 4
5
5
66
G
78
GG
910
G
CN100
11
2
2

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-8
This Document can not be used without Samsung's authorization
4. Charging Part
The pin #17, #18 of
CN300 is TA_VEXT 뵃
5V?
Abnormal charging operation
The pin #4 of U103
is "HIGH"?
Replace TA or Check CN300
Check the U101,U103
Check the U102
END
No
Yes
Yes
Yes
No
No
The pin #4 of U102
is "HIGH"?
No
The pin #6 of U102 is
LOW Check U102 or TA
Yes
The pin #5 of U102 is
LOW(During charging)
The ICHRG = 1V(during
charging)
and 뵃180mV(full
charging)?
Solder again or change
R118
Check U102 or TA
No
Yes
No
Yes

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-9
This Document can not be used without Samsung's authorization
I
D
I
A
D
SIMCLK SIMDATA
SIMRST
SIMVCC
N
R
I
A
D
K
C
I
A
D
O
D
I
A
D
100NF
C119
56PF
C100
2.2UF
C104
VCCD
VCC
A
0
2.7K
R120
R118
C122
1UF
6
7
GG
89
GG
10
CN100
1
1
22
3
34
4
55
6
4
0
1
P
T
NC
C121
NCR711
100K
R121
C110
470nF
VCCB
TP109
2
0
1
P
T
VBAT
R105 0
R102
1.2K
4
1
RN
G
E
R
V
3
1
MP
G
E
R
V
H11
VRTC
K12
VSIM
1
S
S
V5
G
4
K
2
S
S
V
2
R
3
S
S
V
6
P
4
S
S
V
3
1
RM
C
V
X
V
1
DQ
A
N
E
O
X
B11
VL4S_B
D10
VL5S_A
VL5S_B C9
G11
VLDO_1
J12
VLDO_2
A13
VLDO_3
B12
VLDO_4
B10
VLDO_5
A14
VLDO_6
C12
VLDO_7
A10
VREF
7
6
D
D
V
6
A
B
D
D
V
1
1
N
D
D
D
V
V
D
D
V1
1
L
5
N
1
O
I
_
D
D
V
4
J
2
O
I
_
D
D
V
4
C
L
T
C
O
_
D
D
V
E14
VEXT
F15
VIB_DRV
9
LN
E
_
G
N
R
_
B
I
V
A12
VL4S_A
P10
UP_IO
R10
UP_RST
F14
VAC C
E13
VBAT
3
J
1
D
D
V
J13
VDD12
3
M
2
D
D
V
3
D
D
V6
N
C11
VDD34
0
1
C
5
D
D
V
3
1
B
SDI_PSC M7
N7
SDO_PSC
C2 SERCK
SERDA
C1
SERLE1
B1
SERLE2
A2
K14
SIM_CLK
J11
SIM_IO
SIM_RST K11
7
EP
X
T
N9
UP_CLK
RESETN_CSP
9
KO
_
T
E
S
E
R
F13
RING_DRV
RTC_ALMN H10
4
NK
L
C
_
C
T
R
L2 RWN
6
DN
I
X
T
X
R
7
DP
I
X
T
X
R
6
CN
Q
X
T
X
R
7
CP
Q
X
T
X
R
L8
SCLK_PSC
OCTL4
A4
OCTL5
G6
B3 OCTL6
OCTL7
A3
7
LF
U
B
_
1
W
S
P
9
MP
E
E
K
_
R
W
P
5
1
CN
1
W
S
_
R
W
P
4
1
C2
W
S
_
R
W
P
6
B1
F
E
R
A
R
5
B2
F
E
R
A
R
R3
4
1
NP
N
I
C
I
M
5
1
PN
T
U
O
C
I
M
5
1
NP
T
U
O
C
I
M
0
1
NE
D
O
M
5
C
N1
2
6
C
N
5
P7
C
N
E6 OCTL0
OCTL1
C5
F5 OCTL2
OCTL3
E5
1
1
F
R
U
C
H
_
D
N
G
4
B
L
T
C
O
_
D
N
G
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
0
1
LQ
R
T
N
I
I|O
L3
G13
LED1_DRV
G12
LED2_DRV
6
RC
M
4
1
MN
N
I
C
I
M
0
1
J
6
1
S
D
N
G
0
1
K
7
1
S
D
N
G
8
F
2
S
D
N
G
9
F
3
S
D
N
G
0
1
F
4
S
D
N
G
7
G
5
S
D
N
G
8
G
6
S
D
N
G
9
G
7
S
D
N
G
0
1
G
8
S
D
N
G
6
H
9
S
D
N
G
3
1
P
V
D
N
G
R
T
N
I
D
6
F
B
D
N
G
0
1
M
D
D
N
G
8
E
Q
D
N
G
7
F
1
S
D
N
G
7
H
0
1
S
D
N
G
1
1
S
D
N
G8
H
2
1
S
D
N
G9
H
7
J
3
1
S
D
N
G
8
J
4
1
S
D
N
G
9
J
5
1
S
D
N
G
D3 DB14
D2 DB15
K3 DB2
J5 DB3
J6 DB4
H5 DB5
G3 DB6
G4 DB7
F4 DB8
F1 DB9
3
P
CSN_PSC K8
4
RK
C
I
A
D
I
D
I
A
D
6
L
6
MO
D
I
A
D
4
PN
R
I
A
D
K1 DB0
DB1
K2
F2 DB10
F3 DB11
E2 DB12
E3 DB13
N
B
T
U
O
A
P
B
T
U
O
A
2
1
R
4
1
LN
N
I
X
U
A
5
1
MP
N
I
X
U
A
3
1
LN
T
U
O
X
U
A
3
1
KP
T
U
O
X
U
A
3
1
D
3
C
D
A
_
X
U
A
E11
CH_BDRV
F12
CH_ISEN D14
CH_RES
CREF E9
N1
N2 AB4
AB5
M2
AB6
M1
AB7
K7
K5 AB8
E10
ADC_AUX1
D15
ADC_AUX2
9
DC
F
A
2
1
NN
A
T
U
O
A
1
1
PP
A
T
U
O
A
2
1
P
U100
K6 AB0
AB1
P1
L5 AB2
AB3
100PF
C107
0
VBAT
R709
VRF
VCC
D
C126
470NF
VCC_1.8A
VCCD
N
2
0
V
I
_
4
1
4
B
R
M100
NEG
2
POS
1
3
0
1
P
T
U102
C123
56PF
C109
1UF
1
0
1
P
T
VCCA
10V
10UF
C117
33PF
C106
U101
MAX4840
2.2UF
C108
0R109
0
0
1
R
0
R116 10
NC
C120
VRTC
0
R119
33PF
C105
C118
10V
10UF
R114
F
N
0
0
1
6
1
1
C
0
470nF
C112
C103
100NF
10UF
10V
C114
4.7UF
C113
C125 470nF
100NF
C101
VCC
D
470nF
C111
D
1
2D5
D
D6
3G4
S
3
0
1
U
H
D
6
2
4
1
I
S
VBAT
33PF
C102
3
2
R107 0
DTC144EM
Q101
1
6.3V
2.2UF
C124
C115
10NF
CP_INT
TA_VEXT
SVC_LED
RST
SVC_LED
TX_BAND_SEL
TX_EN
SERDAT
DSP_DB(0:15)
DSP_AB(0:8)
CHG_ONICHRG
MICINP
AUXINP
DCS_TX_EN
GSM_TX_EN
CHG_DET
RTX_QP
RTX_QN
P
A
T
U
O
A
P
G
E
R
V
C
M
_
M
3
1
K
L
C
N
O
_
G
I
J
KEY_ROW(0)
DSP_IO
CSP_RESET
DSP_AB(1)
DSP_AB(0)
VREF
DSP_DB(1)
DSP_DB(6)
DSP_DB(11)
DSP_DB(12)
DSP_DB(10)
DSP_RWN
SI_EN
SERLE
SERCLK
RTX_IP
RTX_IN
DSP_DB(0)
UP_CS
P
T
U
O
X
U
A
N
T
U
O
X
U
A
N
N
I
X
U
A
P
B
T
U
O
A
N
B
T
U
O
A
N
A
T
U
O
A
AFC
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
P
T
U
O
C
I
M
N
T
U
O
C
I
M
N
N
I
C
I
M
BACKLIGHT
T
N
I
_
P
S
D
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
KEY_COL(2)
SIMRST
SIMDATA
SIMCLK
TXPOWER
UP_SDI
UP_SCLK
K
2
3
K
L
C
RTCALARM
N
O
_
R
W
P
PWR_KEEP

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SGH-E850 Flow Chart of Troubleshooting
2-10
This Document can not be used without Samsung's authorization
5. Microphone Part
Is the assembled
status of
microphone O.K?
Microphone does not work
C418 뵃2.0V
Reassemble the microphone
SolderthemicrophoneagainorReplace
R407,R408,R409,R410,R411,R412,
R415,C408,C415
END
No
Yes
Yes
Yes
Yes
No
Is microphone ok? No
Check OSC300
Check the reference voltage on mic path

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SGH-E850 Flow Chart of Troubleshooting
2-11
This Document can not be used without Samsung's authorization
2.7K
10NF
R314
C302
10NF
C301
560
R315
VRF
R317
10NF
C308
10NFC304
100K
1NFC303
1
OSC300
BUFFIN
56
BUFFOUT
2
GND
3
OUT VCC
4
VCONT
10NFC306
R323
150
R312 100
10NF
C300
CLK13M_TR
CLK13M_MC
CLK13M_RF
CLK13M_YMU
AFC
1.5K,1%
R419
56K
R427
C413
NC
R407
10K,1%
C412
10PF
C418
33UF
6.3V
NC
C421
C411
NC
R420
1.5K,1%
R418
NC
MIC400
VCCA
220
10PF
C414
R415
R424
10K,1%
0
R435
1UF
C415
C408
1UF
C432
22PF
R411
1.5K,1%
NC
C416
R408
120K
R409
10K,1%
C419
47NF
R410
120K
1.5K,1%
R412
C420
NC
VREGP
AUXINP
MICOUTP
AUXOUTP
MICOUTN
MICINP
MICINN

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SGH-E850 Flow Chart of Troubleshooting
2-12
This Document can not be used without Samsung's authorization
6. Speaker Part
Is the terminal of
Speaker O.K.?
There is no sound from Speaker
Are there any
signals
at the C202,C203?
Check LCD or Replace
CN200
Is there any
signals
at the pin#5
and pin#7 of
U400?
END
No
Yes
Yes
Yes
No
No
Thetypeof
sound from the
Speaker is
Melody
Replace the Speaker
No
Yes Yes
No
Yes
Yes
Check the U400
Is there any
signals
at the pin#2
and pin#10 of
U400?
The pin#4 of
U400 is
3.2~4.2v
Check the
U401
Check the
U100
The pin#4 of
U400 is
3.2~4.2v
Check the
Battery or R434
No
No

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SGH-E850 Flow Chart of Troubleshooting
2-13
This Document can not be used without Samsung's authorization
SPEAKER
56PF
C105
R102 0
R101 0
56PF
C104
TP102
TP101
SPK1P
SPK1N
S_PWR
52
52
53 53 54
54
55 55
6
6
7
78
8
9
9
45 45 46
46
47 47 48 48
49 49
5
5
50 50
51
51
38
38
39 39
4
4
40
40
41 41 42 42
43 43 44 44
30
30
31 31 32
32
33
33 34
34
35
35 36
36
37
37
23 24
24
25 25 26
26
27
27 28
28
29
29
3
3
16
16
17 17 18
18
19
19
2
2
20
20
21
21 22
22
23
11
10
10
11
11 12
12
13
13 14
14
15
15
CN200
330NF
C200
R231 0
C202
18PF
100NF
C201
VBAT
18PF
C203
VCCD
0
R230
LCD_D(0)_FO
SPK1P
LCD_D(8)_FO
LCD_D(10)_FO
LCD_D(12)_FO
LCD_D(14)_FO
LED_EN
POPUP_DET
RST
SVC_LED
SPK1N
LCD_D(7)_FO
LCD_D(5)_FO
LCD_D(3)_FO
LCD_D(1)_FO
LCDVIB_EN
LCD_D(9)_FO
LCD_D(11)_FO
LCD_D(13)_FO
LCD_D(15)_FO
BL_DIM
CAM_A_FO
LCD_D(6)_FO
LCD_D(4)_FO
LCD_D(2)_FO
Y(1)_FO
Y(3)_FO
Y(4)_FO
Y(6)_FO
Y(5)_FO
Y(7)_FO
CAM_RESET
PCLK
VTREF
CAM_SCL
CAM_SDA
MCKI
HZREF
CAM_CLCD_EN_FO
CAM_WEN_FO
ROW(1)
ROW(0)
COL(1)
COL(4) PWR_ON
COL(3) ROW(2)
Y(0)_FO
Y(2)_FO

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SGH-E850 Flow Chart of Troubleshooting
2-14
This Document can not be used without Samsung's authorization
R403
33K
100NF
C410
VBAT
C406
100NF
18
R400
1NF
C409
8
NC1
5
NC2 7
NO1
2
NO2 10 V+
1
COM1
9
COM2
G
11 12
GG
13 14
G
6
GND
IN1
4
IN2
U400
3
220PFC407
VBAT
NC
C405
270PF
C401
VCCD
R401 18
100NF
C400
K
3
.3604R
4.7UF
C404
6.3V
C402
100NF
31 /RD
4
TSR
/
/WR
28
18
2TUOPS
SPVDD 15
16
SPVSS
DDV
7
FERV
98
SSV
29 /CS
QR
I/
3
10
HPOUT-L/MONO
HPOUT-R 11
32 IOVDD
2
DEL
R
TM
19
CN
56
C
LLP
1TUOPS
1720
7D
12
EQ1
EQ2 13
14
EQ3
G
33
34 GG 35
36
G
27 D0
D1
26
2D
25 24
3D
4D
23 22
5D
6D
21
U401
A0
30
IKLC
1
R402
150K
100K
R434
22NF
C403
33K R405
R404
SPK1P
NC
)7
(D
)6
(D
)5
(D
)4
(D
)3
(D
)2
(D
RST
YMU_IRQ
N
1KPS
_UM
Y
P1KPS
_UM
Y
NE_B
IV
_UM
Y
YMU_LED
CLK13M_YMU
AOUTAP
YMU_SPK1P
AUDIO_OUT_SEL
AOUTAN
SPK1N
D(1)
D(0)
CP_WEN
A(0)
YMU_EN
CP_OEN
YMU_SPK1N

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-15
This Document can not be used without Samsung's authorization
2.RF
1. GSM RX
NORMAL CONDITION
catch the channel?
F700 CHECK
pin8 ≥65dBm ?
F700 CHECK
pin2, 3 ≥65dBm ?
U700 CHECK
pin20,21 ≥65dBm
U700 check
pin9,31:clean2.8V
NO
YES
check
L700,C728,L707 contact or
INTENNA CONTAC ?
CON700
resolder or change
F700
resolder or change
C703,L701,C705
resolder or change
U100 Pin A13, C109
check or resolder
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
CHECK
U100
NO
YES
NO
YES
NO
NO
YES
YES

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-16
This Document can not be used without Samsung's authorization
2. DCS RX
NORMAL CONDITION
catch the channel?
F700 CHECK
pin8 ≥65dBm ?
F700 CHECK
pin4, 5 ≥65dBm ?
U700 CHECK
pin18, 19 ≥65dBm
U700 check
pin9,31:clean2.8V
NO
YES
check
L700,C728,L707 contact or
INTENNA CONTAC ?
CON700
resolder or change
F700
resolder or change
C706,L702,C708
resolder or change
U100 Pin A13, C109
check or resolder
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
CHECK
U100
NO
YES
NO
YES
NO
NO
YES
YES

SAMSUNG Proprietary-Contents may change without notice
SGH-E850 Flow Chart of Troubleshooting
2-17
This Document can not be used without Samsung's authorization
3. GSM TX
F700 pin 8
about 31~33dBm?
CN700,C727,L709
check&change
F700
pin 1=2.8V?
U100
check & change
U701 pin 6
about 31~33dBm?
L708 or F700 check & change
U701 pin 42,43
=3.7V ?
U701 pin 45
=1~1.5v ramp signal?
BATTERY
check & change
U701 pin 48
about : 0~5dBm?
U701 pin 40=low
&pin41=HIGH
U100
check
U701
change or
resolder
U100
check & change
U700
pin 9,31
=2.8V?
U100
pin A13, C109
change or resolder
OSC 300
pin
3,5,6=13MHz
Are there any
signal at U700
pin#12,13,14
U700 pin 8
=13MHz
U100
check or
change
U700
change or
resolder
OSC 300
change
Check
C301,R312,C704
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
YES
NO
NO
NO
YES
YES
NO
NO
YES
NO
YES
CONTINUS TX ON
RF INPUT : 62CH
TX LEVEL :5

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SGH-E850 Flow Chart of Troubleshooting
2-18
This Document can not be used without Samsung's authorization
4. DCS TX
F700 pin 8
about 28~30dBm?
F700
pin6=2.8V?
U100
check&change
U701 pin31
about 28~30dBm?
F700 check & change
U701 pin
42,43
=3.7V?
U701 pin# 45
=1~1.5V ramp signal?
BATTERY
check & change
U701 pin 37
about : 0~5dBm?
U100
check
U701
change or resolder
U100
check
U700
pin 9,31
=2.8V?
U100
pin A13,C109
change or resolder
OSC 300
pin3,5,6=13MHz
U700 pin8
=13MHz
U100
check or change
U700
change or resolder
OSC 300
check or change
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
YES
NO
NO
NO
YES
YES
NO
NO
YES
NO
YES
CN700,C727,L709
check&change
U701 pin 40=HIGH
&pin41=HIGH
Check
C301,R312,C704
Are there any
signal at U700
pin#12,13,14
CONTINUS TX ON
RF INPUT : 698CH
TX LEVEL :0