Samsung SGH-E770 User manual

GSM TELEPHONE
SGH-E770
GSM TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded View and Parts List
4. MAIN Electrical Parts List
5. PCB Diagrams
6. Block Diagrams

1. SGH-E770 Specification
1-1
1-1. GSM General Specification
GSM 900 DCS1800 PCS1900
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 0~124
&975~1023 512~885 512~810
Tx/Rx spacing 45MHz 95MHz 80MHz
Mod. Bit
rate/
Bit Period
GPRS 270.833Kbps
3.692us
270.833Kbps
3.692us
270.833Kbps
3.692us
EDGE 812.5Kbps
3.692us
812.5Kbps
3.692us
812.5Kbps
3.692us
Time Slot
Period/Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation
GPRS 0.3GMSK 0.3GMSK 0.3GMSK
EDGE 8PSK 8PSK 8PSK
MS Power
GPRS 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
EDGE 27~5dBm 26~0dBm 26~0dBm
Power
Level
GPRS 5pcl~19pcl 0pcl~15pcl 0pcl~15pcl
EDGE 8~19(c lass E2 ) 2~15(class E2) 2~15(class E2)
Sensitivity -102dBm -100dBm -102dBm
TDMA Mux 8 8 8
Cell Radius 35Km 2Km 2Km

SGH-E770 Specification
1-2
1-2. GMSK TX power Level
TX Power
control
level
GSM900
5 33±2dBm
6 31±3dBm
7 29±3dBm
8 27±3dBm
9 25±3dBm
10 23±3dBm
11 21±3dBm
12 19±3dBm
13 17±3dBm
14 15±3dBm
15 13±3dBm
16 11±5dBm
17 9±5dBm
18 7±5dBm
19 5±5dBm
TX Power
control
level
DCS1800
0 30±2dBm
1 28±3dBm
2 26±3dBm
3 24±3dBm
4 22±3dBm
5 20±3dBm
6 18±3dBm
7 16±3dBm
8 14±3dBm
9 12±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±2dBm
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

SGH-E770 Specification
1-3
1-3. EDGE TX Power Level
TX Power
control
level
GSM850
8 27±3dBm
9 25±3dBm
10 23±3dBm
11 21±3dBm
12 19±3dBm
13 17±3dBm
14 15±3dBm
15 13±3dBm
16 11±5dBm
17 9±5dBm
18 7±5dBm
19 5±5dBm
TX Power
control
level
DCS1800
2 26±3dBm
3 24±3dBm
4 22±3dBm
5 20±3dBm
6 18±3dBm
7 16±3dBm
8 14±3dBm
9 12±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
TX Power
control
level
PCS1900
2 26±3dBm
3 24±3dBm
4 22±3dBm
5 20±3dBm
6 18±3dBm
7 16±3dBm
8 14±3dBm
9 12±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm

SAMSUNG Proprietary-Contents may change without notice
2. SGH-E770 Flow Chart of Troubleshooting
2-1
This Document can not be used without Samsung's authorization
2-1.Baseband
2-1-1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥100mA ?
Check the V bat. voltage
Down load again
Voltage ≥3.3V ?
Check the pins of UCP301
C311 ≥1.8V ?
Check the Initial operation
END
C314 and C315 = 2.8V?
Charge the Battery
Checktheclockgeneration
circuit (TCX101, U104 pin#4)
Checktheclocksignal
at pin #3 of TCX101
Freq.=13MHz,Vrms ≥300mV
Check UCP301 and C316
Check UCP301 and C311
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
C316=1.5V?

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-2
This Document can not be used without Samsung's authorization
C315
R314
C311
C317
VCCD_1.8V
VCCB_2.9V
VRF_2.9V
R319
C310
C316
VCCA_2.9V
C314
C313
C300C301
VCCA_2.9V
VCCD_1.8V_PSC
C303
R325
VBAT
R321
C320
TH300
C309
BAT300
12
VCCB_2.9V
C302
VCCD_2.9V
VRF_2.9V
VPAC_2.8V
VBAT
R315
C322
VBAT
VRTC_1.5V
VCCD_2.9V
VLDO1_1.5V
VCCB_2.9V
C318
C323
R312
C319
R317
R311
C312
NGERV
31M P
GER
V
H11
VRTCK12
VSIM
5G
1SSV
4K
2SSV 2R
3SSV
6P
4SSV
31R MC
VX
V
1D QANEOX
D10
VL5S_A
VL5S_BC9
G11
VLDO_1J12
VLDO_2
A13
VLDO_3B12
VLDO_4
B10
VLDO_5
A14
VLDO_6C12
VLDO_7
A10
VREF
41R
6A
BDDV
11N
DDDV
11L
VDDV
5N
1OI_DDV
4J
2OI_DDV
4C
LTCO_DDV
E14
VEXT
F15
VIB_DRV
9L NE_GNR_BIV
A12
VL4S_AB11
VL4S_B
UP_IOR10
UP_RST
F14
VACC
E13
VBAT
3J
1DDV
J13
VDD12
3M
2DDV
6N
3DDV
C11
VDD34
01C
5DDV
31B
76DDV
N7
SDO_PSC
C2SERCK
SERDA
C1
SERLE1
B1
A2SERLE2
K14
SIM_CLK
J11
SIM_IOK11
SIM_RST
7E PXT
N9
UP_CLK
P10
O_TESER
F13
RING_DRV
H10
RTC_ALMN
4N KLC_CTR
L2RWN
6D NIXTXR
7D PIXTXR
6C NQXTXR
7C PQXTXR
L8
SCLK_PSC
SDI_PSCM7
OCTL4
OCTL5
G6
B3OCTL6
OCTL7
A3
7L FUB_1WSP
9M PEEK_RWP
51C N1WS_RWP
41C 2WS_RWP
6B 1FERAR
5B 2FERAR
RESETN_CSP
R3
9K
41N PNICIM
51P NTUOCIM
51N PTUOCIM
01N EDOM
5CN 1
2
6CN
E6OCTL0
OCTL1
C5
F5OCTL2
OCTL3
E5
A4
VD
NG
11F
RUCH_DNG
4B
LTCO_DNG
51B
1CSP_DNG
51K
2CSP_DNG
01L QRTNI
I|O
L3
G13
LED1_DRVG12
LED2_DRV
6R CM
41M NNICIM
01J
61SDNG 01K
71SDNG
8F
2SDNG
9F
3SDNG 01F
4SDNG
7G
5SDNG 8G
6SDNG
9G
7SDNG 01G
8SDNG
6H
9SDNG
31P
3P RTNID
6F
B
DNG
01M
DDNG
8E
QDNG
7F
1SDNG
7H
01SDNG
8H
11SDNG 21SDNG 9H7J
31SDNG
8J
41SDNG 9J
51SDNG
DB13
D3DB14
D2DB15
K3DB2
DB3
J5
J6DB4
H5DB5
G3DB6
G4DB7
F4DB8
F1DB9
E9
CSN_PSCK8
4R KCIAD
6L IDIAD
6M ODIAD
4P N
RI
AD
K1DB0
DB1
K2
F2DB10
F3DB11
E2DB12
E3
21P NBTUOA
21R PBTUOA
41L NNIXUA
51M PNIXUA
31L NTUOXUA
31K PTUOXUA 31D
3CDA_XUA
E11
CH_BDRVF12
CH_ISEND14
CH_RES
CREF
AB4
AB5
M2
M1AB6
AB7
K7
K5AB8
E10
ADC_AUX1D15
ADC_AUX2
5P 4XUA_CDA
9D CFA
21N NATUOA
11P PATUOA
UCP301
K6AB0
AB1
P1
L5AB2
AB3
N1
N2
TX_EN
ICHRG
NNIXUA
NTUOXUA
DCS_TX_EN
FUB_1WSP
QANEOX
RX_EN
PAC_EN
DSP_IO
DSP_RWN
SX_EN
FLASH_RESET
NO_GIJ
SIM_RST
SIM_IO
VSIM
SIM_CLK
PNICIM NNICIM PTUOCIM NTUOCIM PNIXUA
PTUOXUA
UP_SDO
UP_SCLK
UP_CS
GSM_TX_EN
TNI_PSD
SERLE
SERDAT
SERCLK
CPAV
PIXTR NIXTR PQXTR NQXTR
PATUOA NATUOA PBTUOA NBTUOA
K23KLC
CM_M31KLC
NO_RWP
DSP_DB(6)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(1)
DSP_DB(0)
DSP_AB(0:8)
DSP_AB(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_DB(0:15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
BP_VF
CFA
DSP_DB(15)
EAR_CHECK
INTRQ
KEY_BL1
PWR_KEEP
RST
RTCALARM
UP_SDI
SIMCLK
SIMDATA
SIMRST

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-3

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-4
This Document can not be used without Samsung's authorization
2-1-2. Initial
The voltage at the C311=1.8V?
The voltage at the C315=2.8V?
Initial Failure
ThevoltageattheVR200
" Low --> High" ?
There is 32.768KHz wave
form at the C214, C215 ?
The voltage is 2.8V
at the C312,C314,C315 ?
LCD Display OK ?
Sound operation OK ?
END
Check the UCP201
Check the UCP301
Check the LCD part
Check the Audio part
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
Check the UCP301
(If it has some problem,
it has to be replaced.)
Check the UCP301
(If it has some problem,
it has to be replaced.)

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-5
HP_CORE_1.6V
C206
C202
R204
OSC200
C205 C207
C215C214
C204
VCCD_1.8V
C201
HP_CORE_1.6V
C208
R201
VRTC_1.5V
D
_
A
S
S
V
U
_
A
S
S
V8
1
F
C
T
R
1
X
9
1
H9
1
FC
T
R
2
X
0
1
M
7
1
S
S
V1
1
M2
1
M
8
1
S
S
V
8
1
A
2
S
S
V3
S
S
V8
G
4
S
S
V9
G
5
S
S
V8
H9
H
6
S
S
V0
1
H
7
S
S
V1
1
H
8
S
S
V9
S
S
V2
1
H
1
1
R
8
1
D
8
_
8
P
1
_
O
I
_
D
D
V9
_
8
P
1
_
O
I
_
D
D
V1
F
8
1
G
C
T
R
V
1
S
S
V2
A
2
1
J
0
1
S
S
V1
1
S
S
V8
K7
L
2
1
S
S
V3
1
S
S
V8
L8
M
4
1
S
S
V5
1
S
S
V9
M
6
1
S
S
V
1
U
5
1
_
8
P
1
_
O
I
_
D
D
V5
U2
1
U
6
1
_
8
P
1
_
O
I
_
D
D
V7
1
_
8
P
1
_
O
I
_
D
D
V8
W8
1
W
8
1
_
8
P
1
_
O
I
_
D
D
V
2
_
8
P
1
_
O
I
_
D
D
V6
B
3
_
8
P
1
_
O
I
_
D
D
V2
1
B6
1
B
4
_
8
P
1
_
O
I
_
D
D
V5
_
8
P
1
_
O
I
_
D
D
V1
C4
1
C
6
_
8
P
1
_
O
I
_
D
D
V9
D
7
_
8
P
1
_
O
I
_
D
D
V
3
E
R
O
C
_
D
D
V8
1
H
4
E
R
O
C
_
D
D
V5
E
R
O
C
_
D
D
V2
M8
1
N
6
E
R
O
C
_
D
D
V7
E
R
O
C
_
D
D
V7
V
8
E
R
O
C
_
D
D
V3
1
V
1
_
8
P
1
_
O
I
_
D
D
V4
B
4
L
0
1
_
8
P
1
_
O
I
_
D
D
V6
1
L
1
1
_
8
P
1
_
O
I
_
D
D
V1
P
2
1
_
8
P
1
_
O
I
_
D
D
V3
1
_
8
P
1
_
O
I
_
D
D
V8
1
T
4
1
_
8
P
1
_
O
I
_
D
D
V
T14
TEST2
TEST3 V16
S
M
T4
1
W2
1
R
N
T
S
R
T
0
X
T
3
M
7
K1
X
T
1
1
T
D
_
A
D
D
V
7
1
F
U
_
A
D
D
V
1
E
R
O
C
_
D
D
V8
B3
1
B
2
E
R
O
C
_
D
D
V2
G
SPCLK1_PIO18
3
T0
S
F
P
S
N15
SPFS1_PIO15
0
D
X
R
P
S
4
R
SPRXD1_PIO17 M17
2
UD
S
2
I
_
0
D
X
T
P
S
N16
SPTXD1_I2SD_PIO16
TCK U14
TDI V14
TDO T12
TEST1 U15
6
4
O
I
P
_
1
M
W
PN
T
S
E
R5
1
G
1
0
O
I
P
_
O
I
R
3
P
7
1
HN
M
R
A
L
A
C
T
R
2
N4
0
O
I
P
_
0
S
T
R
RWN V6
1
M8
2
Q
R
I
_
0
X
R
6
L8
2
Q
R
I
_
1
X
R
K
L
C
M
I
S
4
P2
TO
I
M
I
S
3
R0
K
L
C
P
S
M18
PIO35_A_A25_BOOTSEL
F2
N
E
O
_
B
S
U
_
6
3
O
I
P
6
1
F7
1
EA
T
A
D
_
B
S
U
_
7
3
O
I
P
5
1
JK
L
C
_
I
C
M
_
8
3
O
I
P
4
1
LN
E
_
D
M
C
_
I
C
M
_
9
3
O
I
PN
E
_
T
A
D
_
I
C
M
_
0
4
O
I
P
4
1
M
6
1
RX
T
A
D
R
I
_
1
4
O
I
PX
R
A
D
R
I
_
2
4
O
I
P
7
1
R
4
1
NN
E
_
0
T
A
D
_
I
C
M
_
3
4
O
I
P
J16
PIO47
5
G
2
T
A
D
_
I
C
M
_
3
2
O
I
P
5
1
L3
T
A
D
_
I
C
M
_
4
2
O
I
P
9
1
V5
2
O
I
P6
2
O
I
P
6
1
U7
2
O
I
P
9
1
U8
2
O
I
P
7
1
W
E14 PIO30_WAITN
P12
PIO31_IRQ6
2
3
O
I
P
3
1
R
U18
PIO33
PIO34 R14
3
1
J
9
1
CI
P
V
_
B
S
U
_
9
0
O
I
P
0
1
O
I
P
7
1
V
8
1
CI
M
V
_
B
S
U
_
1
1
O
I
P
7
1
DO
P
V
_
B
S
U
_
2
1
O
I
P
6
1
EO
M
V
_
B
S
U
_
3
1
O
I
P
5
PT
S
R
M
I
S
_
4
1
O
I
P
5
1
PP
E
E
K
R
W
P
_
9
1
O
I
PQ
E
R
K
L
C
S
Y
S
_
0
2
O
I
P
9
1
P
3
1
K0
T
A
D
_
I
C
M
_
1
2
O
I
P1
T
A
D
_
I
C
M
_
2
2
O
I
P
2
1
L3
1
L
F
U
B
_
1
W
S
P
_
5
D
R
B
Y
E
K
6
H4
H6
D
R
B
Y
E
K7
D
R
B
Y
E
K
1
H3
H8
D
R
B
Y
E
K9
D
R
B
Y
E
K
6
G
1
1
C
N2
C
N2
6
1
GT
U
O
2
3
C
S
O
PIO00_IRQ5 P16
P
S
U
S
_
B
S
U
_
7
0
O
I
P
9
1
B
D
M
C
_
I
C
M
_
8
0
O
I
P
M16
M19
IRQ2
IRQ3 P17
P18
IRQ4
7
J0
D
R
B
Y
E
K1
D
R
B
Y
E
K
6
J
0
1
D
R
B
Y
E
K
4
G1
1
D
R
B
Y
E
K
2
H
2
D
R
B
Y
E
K
5
J3
D
R
B
Y
E
K
4
J8
J4
D
R
B
Y
E
K
D_D4 V8
D_D5 U8
D_D6
D_D7 T8
T9
D_D8
D_D9 R9
FLASHRSTN
H14
T15
INT0
IO W6
V12
IOBIT0_PIO05 N11
IOBIT1_PIO06
IRQ1
D_D0 U6
D_D1 T6
P8
D_D10
D_D11 P9
N8
D_D12 N9
D_D13
D_D14 N10
D_D15 P11
R7
D_D2
D_D3 T7
R8
2
0
O
I
P
_
0
R
S
D3
0
O
I
P
_
0
R
T
D
4
N
V1
D_A0
D_A1 W2
W3
D_A2 V3
D_A3
D_A4 U4
D_A5 T5
V4
D_A6
D_A7 N6
R6
D_A8
A_D6
A_D7
G12 A_D8
D11 A_D9
E12
A_OEN
B14
D14 A_WEN
2
1
W
I
K
C
N12
CKO_IACK
T17
CPTSTSTOP_CKO
9
2
O
I
P
_
0
S
T
C
6
M5
N4
4
O
I
P
_
0
D
C
D
2
P
C12 A_D10
A_D11
A12
F12 A_D12
A_D13
D12
E13 A_D14
D13 A_D15
A_D2
F9 A_D3
G10
G11 A_D4
A_D5
F11
E11
A17
A14 A_CS0N
C15 A_CS1N
G14 A_CS2N
A_CS3N
J14 A_CS4N
D15
C16 A_CS5N
F15 A_CS6N
A_CS7N
B17
A8 A_D0
A_D1
E9
A_A22
A_A23
F4 A_A24
F3
A_A3
A6
C6 A_A4
A_A5
C5
D7 A_A6
A_A7
E7
C4 A_A8
A_A9
C2
H16 A_BE0N
A_BE1N
A_A13
D6
D5 A_A14
A_A15
D3
E8 A_A16
A_A17
F8 A_A18
E6
D2 A_A19
A_A2
D8
E4 A_A20
A_A21
E3
F5
ATCK_CTS1 M4
ATDI_RTS1 L5
T13
ATDO_PWM2
K12
ATMS_PIO45
A_A0
B7
A_A1
C8
A3 A_A10
A_A11
B3
B1 A_A12
UCP201
0
0
2
R
V
1
0
2
L
PCM_CLK
LCDC_INT
ONENAND_CS
MCI_DAT0_EN
MCI_DAT0
MCI_CMD
MCI_CLK
MCI_CMD_EN
CARD_INS
YMU_IRQ
CHG_OFF
A(0)
DSP_INT
DSP_IO
DSP_RWN
FLASH_EN1
KEY_COL(0:4)
LOWER_BYTE
YMU_CS
LCDC_CS
RAM_CS
KEY_ROW(0:5)
SPK_SEL
M_HOLD
PCM_SYNC
PCM_IN
PCM_OUT
DSP_AB(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)
CP_TDI
CP_TCK
CP_TMS
HALL_SENSOR
JACK_IN
INTRQ
USB_CON
AK_EN
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)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(1)
DSP_DB(0)
DSP_AB(0:8)
D(11)
D(10)
D(9)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
UP_SDO
UP_SDI
UP_CS
OLED_EN
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
DSP_DB(15)
DSP_DB(0:15)
A(21)
A(20)
A(19)
A(18)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
A(11)
A(10)
A(9)
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
CP_OEN
T_FLASH_ON
FLASH_RESET
ROM1_CS
UPPER_BYTE
D(0:15)
D(14)
D(13)
D(12)
RST
INVERT
RTCALARM
BT_RTS
BT_RXD
SDS_RXD
SIMCLK
SIMDATA
UP_SCLK
BT_TXD
SDS_TXD
A(0:24)
A(24)
A(23)
A(22)
USB_SUSP
USB_DET
MIC_SEL
VMOT_EN
USB_VPO
USB_VMO
SIMRST
PWR_KEEP
XOENAQ
AMP_EN
EAR_SEL
CHG_DET
EAR_SWITCH
USB_OEN
USB_DATA
VIB_EN
PWM_MAG
CP_TDO
D(15)
CP_WEN
CLK13M_TR
BT_CTS
MLCD_DIM
VBT_EN
KEY_COL(0)
KEY_ROW(4)
KEY_ROW(5)
PSW1_BUF
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
CLK32K

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-6
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-7
2-1-3. Sim Part
The voltage is 2.8V
at the pin #1 of ZD307? Check the UCP301
"Insert SIM" is displayed on the LCD
END
Check the SIM Card
YES
NO
NO
YES
Is there any signal
pin #2,3,4 of ZD307 ? Check the UCP301 & UCP201

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-8
This Document can not be used without Samsung's authorization
6
K
C
O
L
C
2
D
N
G
1
O
I
5
C
N
M
I
S
34
C
C
V
ZD307
C305
C308
C306 C307C304
GG
89
GG
10
11 22 33 4
4
55
6
6
7
SIM301
SIM_IO
SIM_RST
VSIM
SIM_CLK

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-9
2-1-4. Microphone Part
Micro-phone does not work
Is the assembled status of
Microphone O.K?
YES
Reassemble the microphone
NO
Check the DC bias voltage on
Mic path.
The voltage of TA434 is
about 2.2V±10%?
NO Solder the microphone again
or Replace
TA434,C433,R433,R438,R437
Is microphone OK? NO Check UCP301
END
YES
YES

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SGH-E770 Flow Chart of Troubleshooting
2-10
This Document can not be used without Samsung's authorization
VCCA_2.9V
C444
R438
R441
C441
C445
TA434
R439
R437
R442
C440
R433
C433
R440
MICINN
MICOUTN MAIN_MIC-
MAIN_MIC+
MICOUTP
MICINP

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-11
2-1-5. Speaker Part
Is the terminal of speaker O.K? NO Replace the speaker
Are there any signal
at the pin #36, 38 of HDC503? NO Check the LCD module
& Replace HDC503
There is no sound from speaker
YES
YES
Thetypeofsoundfrom
the speaker is Melody?
YES NO
Are there any signal
at the pin #1,5 of U408? Are there any signal
at the pin #3,15 of U408?
Check
UCD403,
UCP301,
UCP201
NO NO
Pin #2 of U408
is Low? Pin #4 of UCP201
is High?
NO NO
YES YES
YESYES
END
Pin 8 of U301
is High? Check U301
YES
NO
Check UCP301

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-12
This Document can not be used without Samsung's authorization
VBAT
C466
NC
NC
22
+
V
14
11
2
S
4
1316
1
D
D2
4
8
3
D
12
D4
D
N
G
6
D
N
G
17
21
2
1
S
1
15
1S2
1
32S1
2
S
2
5
10
3-4IN
7
1
S
3
3S2 9
4S1
U408
1-2IN
R461
C467 C468
R462
AOUTAN
AMP_R AOUTAP
AMP_L
SP_OUT_N
SP_OUT_P
AMP_EN

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-13
2-1-6. Camera Part
Camera function does not work
Check the connect HDC503? NO Connect the HDC503
Pin #5 of U302= 1.8V? NO
NO
Pin#3ofOSC400is27MHz? NO
Pin#4ofU305=2.8V?
END
YES
YES
YES
YES
Is that clock signal at the
pin #26 of HDC503?
NO
Pin#1ofU305=High?
YES
Check the U302&L302
Check
UCP201
NO
NO
Pin#44 of HDC503 is High? Check
UCP401
Replace OSC400
and check UCP201
YES

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SGH-E770 Flow Chart of Troubleshooting
2-14
This Document can not be used without Samsung's authorization
R423
C431 C430
C423
C424
R419
R417
R428
R430
VDD_TV_3.3V
C469
VCAM_2.8V
R432
P8
GPIO1_D7 P9
3
1
P
D_SDATAIN
P14
L_DA2 P2
L_WR_N P3
LS_CS_N P4
L_DA0 P5
GPIO1_D0 P6
GPIO1_D1 P7
GPIO1_D4
N6
GPIO1_D2 N7
GPIO1_D3 N8
GPIO1_D5 N9
L_DA3 P1
1
G
D
D
V0
1
P
GPIO2_D9 P11
TESTMODE P12
C
A
D
D
V
N11
D_BCK
N12 D_MSCK
N13
D_SDATAOUT
N14
L_DA4 N2
L_DA5 N3
L_DA1 N4
L_RD_N N5
L_PCLK
L8
D_LRCK
L9
L_DA8 M1
S_SSN M13
S_MISO M14
L_DA7 M2
L_DA6 N1
GPIO1_D6 N10
GPIO2_D8
L11
S
S
V
3
1
L
GPIO2_D10 L14
L_DA10 L2
L_DA9 L4
S
S
V
5
L
I
D
D
V6
L
D_SDA
L7
S_SCK
K4
L_DA13 K5
C
D
D
V6
K
D_SCK
K7
TMS K8
TRST K9
L_DA11 L1
I
P
S
D
D
V0
1
L
S_MOSI
J4
L_DA15 J5
L_DA12 K1
GPIO2_D11 K10
TDI K11
RTCK K13
TCK K14
L_DA17 K2
L_DA14
4
H
D
C
L
D
D
V5
H
L_CS_N J1
V
T
S
S
V
A
0
1
JV
T
D
D
V
A
1
1
J
T_OUT J13
TDO J14
L_ADS J2
L_DA16
4
G
S
S
V
5
G
USB_DP H1
M_SD0
H10
M_SD1
H11
T_VRO H13
T_VREF H14
USB_DM H2
B
S
U
D
D
V
F4
I
D
D
V5
F
GPIO2_D15 G1
M_SD5
G10
M_SD7
G11
M_SD3
G13 M_SD2
G14
GPIO2_D14 G2
C
D
D
V
E8
M_SA1
E9
S
S
V
1
F
M_SD8
F10
M_SD9
F11
M_SD6
F13
M_SD4
F14
C_PWDN F2
C_D7
E11
M_SD10
E13
M_SD11
E14
C_D5
E2
C_D1
E4
C_D4
E5
SD_D5_SD_3
E6
M_INTR
E7
M_SD13
D4
S
D
D
V5
D
SD_D2_SD_0
D6
M_ADS
D7
C
D
D
V8
D
XRTS0
D9
C_D6
E1
M_SD12
E10
M_SD14
C14
C_MCLK
C2
C_D3
D1
M_HOLD
D10
MS_CS_N
D11
M_SD15
D13
M_SA0
D14
C_D2
D2
C_PCLK
B4
SD_D3_SD_1
B5
D
S
D
D
V6
B
SD_D0_SCLK
B7
GPIO2_D12 B8
S
S
V
9
B
C_D0
C1
XOUT
C13 XIN
B1
M_SA2
B10
SOUT0
B11
B12
M_RESET_N
L
L
P
D
D
V3
1
B
L
L
P
S
S
V
4
1
B
C_SDA
B2
S
S
V
3
B
STROBE
A2
C_RST
A3
C
D
D
V4
A
SD_D4_SD_2
A5
Q
S
S
V
6
A
SD_D1_SCMD
A7
GPIO2_D13 A8
I
D
D
V9
A
C_SCK
1
C
N
2
C_VS
A1
M_CS_N
A10
XCTS0
A11
SIN0
A12
M_WR_N
A13 M_RD_N
A14
C_HS
UCP401
C
N
C400
R421
VCCD_1.8V
VDD_TV_3.3V
R410
1+IN
5
ENABLE
GND
2
OUU 43 SAG
V+ 6
U403
R427
C429
R424
C401
VR402
C419
VDD_TV_3.3V
VCAM_2.8V
C406C405
C403
C404
L400
VCCD_2.9V
C402
GND1
2
4
GND2
1
HOT
3
HOT
OSC400
MLCD_CS
SLCD_CS
LCD_WEN
L_ADS
LCD_AD_[00:15]
LCD_AD_(00)
LCD_AD_(01)
LCD_AD_(02)
LCD_AD_(03)
LCD_AD_(04)
LCD_AD_(05)
LCD_AD_(06)
LCD_AD_(07)
LCD_AD_(08)
LCD_AD_(09)
LCD_AD_(10)
LCD_AD_(11)
LCD_AD_(12)
LCD_AD_(13)
LCD_AD_(14)
LCD_AD_(15)
SDA
SCL
D_SDIN
D_SDOUT
D_MSCK
D_BCK
D_LRCK
TV_EN
TV_OUT
VCAM_EN
P_MODE
TV_EN
CAM_DATA(0:7)
CAM_DATA(7)
CAM_DATA(6)
CAM_DATA(5)
CAM_DATA(4)
CAM_DATA(3)
CAM_DATA(2)
CAM_DATA(1)
CAM_DATA(0)
CAM_HSYNC
CAM_VSYNC
CAM_RST
M_CLK
P_CLK
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
LCDC_CS
CP_WEN
CP_OEN
A(8)
M_HOLD
LCDC_INT
FLASH_RESET
A(18)
A(1)
A(2)
D[0:15]
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-15
2-1-7. Mp3 Display Part
NO
Replace the Earphone
Are there any signal
at the pin #4,16 of U408?
NO
Check TA461, 462
andthepin#1,4ofZD401
There is no MP3 sound from Earphone
YES
YES
Are there any signal
at the C416, 417?
NO
The voltage of TA410
is 3.3V?
NO
YES
YES
END
Check the U301
Are there any signal
at the pin #4,6 of EAR400?
Are there any signal
at the pin #3,15 of U408?
NO
YES Pin #2 of U408
is Low? NO
YES
Pin 14 of U408
is 3.3V?
YES
Pin 4 of U303
is High?
NO
YES
Check
UCP201
Check
U408
Check
U303
END
NO
Check UCP301
Check
C416, 417
Check the EAR400
Check the UCP201

SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
2-16
This Document can not be used without Samsung's authorization
2-2.RF
2-2-1. EGSM RX
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
F100 Check
Pin #6 ≥-65dBm ?
F100 Check
Pin #15 ≥-65dBm ?
UCD100 Check
Pin#42 ≥-65dBm ?
Check soldered status of
R125, 11, C12, 153, L108, 106
RFS100, C10
Resoer or Change
F100 Resolder or Change
UCD100 Check
Pin#15,16,23,27,31
=Clean 2.8V?
UCD100 Check
Pin#28,29,30,54=100mV?
C154, 17, 18, 19, UCP301
Check or resolder
Check UCP301
NO
NO
YES
YES
YES
NO
YES
UCD100 Check
Pin #17 : 13MHz ?
Vpp : 1.1V?
R118 = 13MHz ?
Vpp = 1.2V? R116 = 1.5V ?
UCD100
Change or resolder
NO
NO NO
C141, R118
resolder TCX101 Change or resolder
YES YES YES
NO
Check soldered status of
L105
YES
NO