Samsung SGH-F880 User manual

GSMTELEPHONE
SGH-E880
GSMTELEPHONECONTENTS
1.Specification
2.FlowChartofTroubleshooting
3.ExplodedViewsandPartsList
4.ElectricalPartsList
5.PCBDiagrams
6.BlockDiagrams

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1. SGH-E880 Specification
1-1
This Document can not be used without Samsung's authorization
1-1. 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-E880 Specification
1-2
This Document can not be used without Samsung's authorization
1-2. 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-E880 Flow Chart of Troubleshooting
2-
11
This Document can not be used without Samsung's authorization
2-1.Baseband
2-1-1. Power ON
'Power On' does not work
Voltage >=3.3V
Download again
Charge the Battery
C113 >= 1.8V Check U100 and C113
Check U100 and C118
Freq = 13MHz
Vrms >=300mV
Vpp≒900mV
Checktheclockgeneration
circuit
(related to OSC700)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
C118 = 1.5V No
Yes
Check the current consumption
Check the Vbat Voltage
Check the pin of U100
Checktheclocksignalatpin#6ofOSC700
Current consumption
>= 100mA
C116 and C117
=2.8V

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SGH-E880 Flow Chart of Troubleshooting
2-
2
This Document can not be used without Samsung's authorization
CSP2600
C710
VRF_2.9
C711
C707
R701
C706
C708
R703
R704
R700
R702
C705
5
BUFFIN
BUFFOUT 6
GND
2
OUT
34
VCC
1
VCONT
OSC700
L700
C709
CLK13M_RF CLK13M_TR
CLK13M_MC
CLK13M_YMU
AFC
SIM_RST
SIM_CLK
VSIM
SIM_IO
R110
R111
C115
R112
VCCD_1.8
C117
R107
VCCD_1.5
VCCB_2.9
C119
R106
VBAT
R105
VCCD_2.9VRF_2.9
R104
R113
VCCB_2.9
C121
VCCB_2.9
R108
VCCA_2.9
C107 C108
C109
VBAT
C124
VCCA_2.9
C123
U101
R103
C110
VCCD_1.8
C113
4
1
R
P
G
E
R
V
3
1
M
VRTC H11
VSIM K12
1
S
S
V5
G
2
S
S
V4
K
3
S
S
V2
R
4
S
S
V6
P
M
C
V
X
V
3
1
R
Q
A
N
E
O
X
1
D
VL5S_A D10
C9
VL5S_B
VLDO_1 G11
VLDO_2 J12
VLDO_3 A13
VLDO_4 B12
VLDO_5 B10
VLDO_6 A14
VLDO_7 C12
VREF A10
N
G
E
R
V
B
D
D
V6
A
D
D
D
V1
1
N
V
D
D
V1
1
L
1
O
I
_
D
D
V5
N
2
O
I
_
D
D
V4
J
L
T
C
O
_
D
D
V4
C
VEXT E14
VIB_DRV F15
N
E
_
G
N
R
_
B
I
V
9
L
VL4S_A A12
VL4S_B B11
P10
UP_RST R10
VACC F14
VBAT E13
1
D
D
V3
J
VDD12 J13
2
D
D
V3
M
3
D
D
V6
N
C11
VDD34
5
D
D
V0
1
C
7
6
D
D
V3
1
B
SDI_PSC
SDO_PSC N7
SERCK
C2
C1 SERDA
B1 SERLE1
SERLE2
A2
SIM_CLK K14
SIM_IO J11
SIM_RST K11
P
X
T
7
E
UP_CLK N9
UP_IO
9
KO
_
T
E
S
E
R
RING_DRV F13
RTC_ALMN H10
K
L
C
_
C
T
R
4
N
RWN
L2
N
I
X
T
X
R
6
D
P
I
X
T
X
R
7
D
N
Q
X
T
X
R
6
C
P
Q
X
T
X
R
7
C
SCLK_PSC L8
M7
A4 OCTL4
G6 OCTL5
OCTL6
B3
A3 OCTL7
F
U
B
_
1
W
S
P
7
L
P
E
E
K
_
R
W
P
9
M
N
1
W
S
_
R
W
P
5
1
C
2
W
S
_
R
W
P
4
1
C
1
F
E
R
A
R
6
B
2
F
E
R
A
R
5
B
R3 RESETN_CSP
N
T
U
O
C
I
M
5
1
P
P
T
U
O
C
I
M
5
1
N
E
D
O
M
0
1
N
1
5
C
N
6
C
N2
7
C
N
5
P
OCTL0
E6
C5 OCTL1
OCTL2
F5
E5 OCTL3
R
U
C
H
_
D
N
G1
1
F
L
T
C
O
_
D
N
G4
B
1
C
S
P
_
D
N
G5
1
B
2
C
S
P
_
D
N
G5
1
K
Q
R
T
N
I
0
1
L
L3 I|O
LED1_DRV G13
LED2_DRV G12
C
M
6
R
N
N
I
C
I
M
4
1
M
P
N
I
C
I
M
4
1
N
0
1
J
7
1
S
D
N
G0
1
K
2
S
D
N
G8
F
9
F
3
S
D
N
G
4
S
D
N
G0
1
F
5
S
D
N
G7
G
6
S
D
N
G8
G
7
S
D
N
G9
G
8
S
D
N
G0
1
G
9
S
D
N
G6
H
V
D
N
G3
1
P
3
P
B
D
N
G6
F
D
D
N
G0
1
M
Q
D
N
G8
E
1
S
D
N
G7
F
0
1
S
D
N
G7
H
1
1
S
D
N
G8
H
9
H
2
1
S
D
N
G
3
1
S
D
N
G7
J
4
1
S
D
N
G8
J
5
1
S
D
N
G9
J
6
1
S
D
N
G
DB14
D3
DB15
D2
DB2
K3
J5 DB3
DB4
J6
DB5
H5
DB6
G3
DB7
G4
DB8
F4
DB9
F1
R
T
N
I
D
CSN_PSC
K
C
I
A
D
4
R
I
D
I
A
D
6
L
O
D
I
A
D
6
M
N
R
I
A
D
4
P
DB0
K1
K2 DB1
DB10
F2
DB11
F3
DB12
E2
DB13
E3
2
1
P
P
B
T
U
O
A
2
1
R
N
N
I
X
U
A
4
1
L
P
N
I
X
U
A
5
1
M
N
T
U
O
X
U
A
3
1
L
3
1
KP
T
U
O
X
U
A3
C
D
A
_
X
U
A3
1
D
CH_BDRV E11
CH_ISEN F12
CH_RES D14
E9
CREF
K8
AB4
N2
M2 AB5
AB6
M1
K7 AB7
AB8
K5
ADC_AUX1 E10
ADC_AUX2 D15
C
F
A
9
D
N
A
T
U
O
A
2
1
N
P
A
T
U
O
A
1
1
P
N
B
T
U
O
A
U100
AB0
K6
P1 AB1
AB2
L5
N1 AB3
C118
5
6
6
G
78
GG
910
G
CN100
11
22
334
4
5
C111
C122
VRTC_1.5
C116
C104
2
POS 1
R109
BAT100
NEG
C102
C106
AGND
VCCD_2.9 VBAT
C114
C103
C105
AGND
VCCD_2.9
C112
F
U
B
_
1
W
S
P
YMU_VIB_EN
Q
A
N
E
O
X
BP_VF
LCDVIB_EN
SVC_LED
PCS_RX_EN
EAR_ADC
EAR_ADC
N
A
T
U
O
A
P
B
T
U
O
A
P
T
U
O
C
I
M
N
B
T
U
O
A
N
T
U
O
C
I
M
P
A
T
U
O
A
P
N
I
C
I
M
N
N
I
C
I
M
P
N
I
X
U
A
K
2
3
K
L
C
C
M
_
M
3
1
K
L
C
T
N
I
_
P
S
D
N
O
_
G
I
J
N
O
_
R
W
P
RST
PWR_KEEP
INTRQ
N
N
I
X
U
A
N
T
U
O
X
U
A
DSP_AB(0:8)
DSP_DB(0:15)
TX_BAND_SEL
RF_EN
PAC_EN
SERLE
SERDAT
SERCLK
AFC
VAPC
RTX_IP
RTX_IN
RTX_QP
RTX_QN
P
T
U
O
X
U
A
DSP_DB(11)
DSP_DB(12)
DSP_DB(13)
DSP_DB(14)
DSP_DB(15)
DSP_DB(2)
DSP_DB(3)
DSP_DB(4)
DSP_DB(5)
DSP_DB(6)
DSP_DB(7)
DSP_DB(8)
DSP_DB(9)
DSP_IO
FLASH_RESET
DSP_RWN
DCS_TX_EN
GSM_TX_EN
UP_CS
UP_SCLK
UP_SDO
UP_SDI
RTCALARM
SIMRST
SIMCLK
SIMDATA
KEY_BACKLIGHT_1
DSP_AB(0)
DSP_AB(1)
DSP_AB(2)
DSP_AB(3)
DSP_AB(4)
DSP_AB(5)
DSP_AB(6)
DSP_AB(7)
DSP_AB(8)
DSP_DB(0)
DSP_DB(1)
DSP_DB(10)

SAMSUNG Proprietary-Contents may change without notice
SGH-E880 Flow Chart of Troubleshooting
2-
3
This Document can not be used without Samsung's authorization
2-1-2. Initial
Initial Failure
The Voltage @ C113 is 1.8V
&
The Voltage @ C113 is 1.8V
Check the U100
(if it has some problem, it is to be replaced.)
Yes
No
The Voltage @ R209
"Low →High"
Yes
No Check the U100
(if it has some problem, it is to be replaced.)
There is 32.768kHz wave
form at the C216 & C217
Yes
No
Check the U200
The Voltage @ R107
is "High"
The voltage is "High" at
the C115,C116,C117 Check the U100
Check the U200
LCD display is O.K
No
No
Yes
Yes
Yes
Check the LCD part
No
Sound operation O.K
Yes
No Check the Audio part
END
Yes

SAMSUNG Proprietary-Contents may change without notice
SGH-E880 Flow Chart of Troubleshooting
2-
4
This Document can not be used without Samsung's authorization
R210
C204
C217
R209
1
1
R
D
_
A
S
S
V
8
1
F
U
_
A
S
S
V
9
1
HC
T
R
1
X
C
T
R
2
X
9
1
F
0
1
M
1
1
M
7
1
S
S
V
8
1
S
S
V2
1
M
2
S
S
V8
1
A
8
G
3
S
S
V
9
G
4
S
S
V
8
H
5
S
S
V
6
S
S
V9
H
0
1
H
7
S
S
V
8
S
S
V1
1
H
2
1
H
9
S
S
V
7
_
8
P
1
_
O
I
_
D
D
V
8
_
8
P
1
_
O
I
_
D
D
V8
1
D
1
F
9
_
8
P
1
_
O
I
_
D
D
V
C
T
R
V8
1
G
2
A
1
S
S
V
0
1
S
S
V2
1
J
8
K
1
1
S
S
V
2
1
S
S
V7
L
8
L
3
1
S
S
V
4
1
S
S
V8
M
9
M
5
1
S
S
V
6
1
S
S
V
4
1
_
8
P
1
_
O
I
_
D
D
V1
U
5
U
5
1
_
8
P
1
_
O
I
_
D
D
V
6
1
_
8
P
1
_
O
I
_
D
D
V2
1
U
8
W
7
1
_
8
P
1
_
O
I
_
D
D
V
8
1
_
8
P
1
_
O
I
_
D
D
V8
1
W
2
_
8
P
1
_
O
I
_
D
D
V6
B
2
1
B
3
_
8
P
1
_
O
I
_
D
D
V
6
1
B
4
_
8
P
1
_
O
I
_
D
D
V
1
C
5
_
8
P
1
_
O
I
_
D
D
V
6
_
8
P
1
_
O
I
_
D
D
V4
1
C
9
D
3
E
R
O
C
_
D
D
V
4
E
R
O
C
_
D
D
V8
1
H
2
M
5
E
R
O
C
_
D
D
V
6
E
R
O
C
_
D
D
V8
1
N
7
V
7
E
R
O
C
_
D
D
V
3
1
V
8
E
R
O
C
_
D
D
V
4
B
1
_
8
P
1
_
O
I
_
D
D
V
0
1
_
8
P
1
_
O
I
_
D
D
V4
L
6
1
L
1
1
_
8
P
1
_
O
I
_
D
D
V
2
1
_
8
P
1
_
O
I
_
D
D
V1
P
8
1
T
3
1
_
8
P
1
_
O
I
_
D
D
V
TEST1
TEST2 T14
V16
TEST3
4
1
W
S
M
T
N
T
S
R
T2
1
R
3
M0
X
T
7
K1
X
T
D
_
A
D
D
V1
1
T
U
_
A
D
D
V7
1
F
8
B
1
E
R
O
C
_
D
D
V
2
E
R
O
C
_
D
D
V3
1
B
2
G
SPCLK1_PIO18 M18
0
S
F
P
S
3
T
N15
SPFS1_PIO15
4
R0
D
X
R
P
S
M17
SPRXD1_PIO17
2
UD
S
2
I
_
0
D
X
T
P
S
SPTXD1_I2SD_PIO16 N16
TCK U14
TDI V14
T12
TDO
U15
5
G
5
1
G
N
T
S
E
R
3
P1
0
O
I
P
_
O
I
R
7
1
HN
M
R
A
L
A
C
T
R
4
0
O
I
P
_
0
S
T
R
2
N
V6
RWN
8
2
Q
R
I
_
0
X
R
1
M
8
2
Q
R
I
_
1
X
R
6
L
4
PK
L
C
M
I
S
O
I
M
I
S
2
T
0
K
L
C
P
S
3
R
PIO34
F2 PIO35_A_A25_BOOTSEL
N
E
O
_
B
S
U
_
6
3
O
I
P
6
1
F
7
1
EA
T
A
D
_
B
S
U
_
7
3
O
I
P
K
L
C
_
I
C
M
_
8
3
O
I
P
5
1
J
N
E
_
D
M
C
_
I
C
M
_
9
3
O
I
P
4
1
L
4
1
MN
E
_
T
A
D
_
I
C
M
_
0
4
O
I
P
X
T
A
D
R
I
_
1
4
O
I
P
6
1
R
7
1
RX
R
A
D
R
I
_
2
4
O
I
P
N
E
_
0
T
A
D
_
I
C
M
_
3
4
O
I
P
4
1
N
PIO47 J16
6
4
O
I
P
_
1
M
W
P
2
T
A
D
_
I
C
M
_
3
2
O
I
P
3
1
L
5
1
L3
T
A
D
_
I
C
M
_
4
2
O
I
P
5
2
O
I
P
9
1
V
6
1
U6
2
O
I
P
9
1
U7
2
O
I
P
8
2
O
I
P
7
1
W
PIO30_WAITN
E14
P12
PIO31_IRQ6
3
1
R2
3
O
I
P
PIO33 U18
R14
D
M
C
_
I
C
M
_
8
0
O
I
P
I
P
V
_
B
S
U
_
9
0
O
I
P
9
1
C
7
1
V0
1
O
I
P
8
1
CI
M
V
_
B
S
U
_
1
1
O
I
P
O
P
V
_
B
S
U
_
2
1
O
I
P
7
1
D
O
M
V
_
B
S
U
_
3
1
O
I
P
6
1
E
T
S
R
M
I
S
_
4
1
O
I
P
5
P
P
E
E
K
R
W
P
_
9
1
O
I
P
5
1
P
9
1
PQ
E
R
K
L
C
S
Y
S
_
0
2
O
I
P
0
T
A
D
_
I
C
M
_
1
2
O
I
P
3
1
K
2
1
L1
T
A
D
_
I
C
M
_
2
2
O
I
P
8
J
6
H5
D
R
B
Y
E
K
6
D
R
B
Y
E
K
4
H
1
H7
D
R
B
Y
E
K
8
D
R
B
Y
E
K
3
H
6
G9
D
R
B
Y
E
K
1
C
N1
2
2
C
N
T
U
O
2
3
C
S
O
6
1
G
P16
PIO00_IRQ5
9
1
BP
S
U
S
_
B
S
U
_
7
0
O
I
P
3
1
J
M16
IRQ1
IRQ2 M19
P17
IRQ3
IRQ4 P18
0
D
R
B
Y
E
K
7
J
6
J1
D
R
B
Y
E
K
0
1
D
R
B
Y
E
K
4
G
2
HF
U
B
_
1
W
S
P
_
1
1
D
R
B
Y
E
K
2
D
R
B
Y
E
K
5
J
4
J3
D
R
B
Y
E
K
4
D
R
B
Y
E
K
R8
V8
D_D5
D_D6 U8
T8
D_D7
D_D8 T9
D_D9 R9
H14 FLASHRSTN
INT0 T15
W6
IO
IOBIT0_PIO05 V12
N11
IOBIT1_PIO06
R6
D_D0 U6
T6
D_D1
D_D10 P8
P9
D_D11
D_D12 N8
N9
D_D13
D_D14 N10
P11
D_D15
D_D2 R7
T7
D_D3
D_D4
2
0
O
I
P
_
0
R
S
D
2
P
4
N3
0
O
I
P
_
0
R
T
D
D_A0 V1
W2
D_A1
D_A2 W3
V3
D_A3
D_A4 U4
D_A5 T5
D_A6 V4
N6
D_A7
D_A8
E11
G12 A_D7
A_D8
D11
E12 A_D9
B14 A_OEN
D14 A_WEN
I
K
C2
1
W
CKO_IACK N12
CPTSTSTOP_CKO T17
6
M9
2
O
I
P
_
0
S
T
C
4
4
O
I
P
_
0
D
C
D
5
N
A_D1
A_D10
C12
A12 A_D11
A_D12
F12
D12 A_D13
A_D14
E13
D13 A_D15
A_D2
F9
G10 A_D3
A_D4
G11
F11 A_D5
A_D6
A17 A_BE1N
A_CS0N
A14
C15 A_CS1N
A_CS2N
G14
J14 A_CS3N
A_CS4N
D15
C16 A_CS5N
F15 A_CS6N
B17 A_CS7N
A_D0
A8
E9
F5
F4 A_A23
A_A24
F3
A6 A_A3
A_A4
C6
A_A5
C5
A_A6
D7
E7 A_A7
A_A8
C4
C2 A_A9
A_BE0N
H16
B1
D6 A_A13
A_A14
D5
D3 A_A15
A_A16
E8
F8 A_A17
E6 A_A18
D2 A_A19
D8 A_A2
A_A20
E4
E3 A_A21
A_A22
U200
ATCK_CTS1 M4
L5
ATDI_RTS1
ATDO_PWM2 T13
K12
ATMS_PIO45
A_A0
B7
A_A1
C8
A_A10
A3
B3 A_A11
A_A12
VCCD_2.9
C220
U205
A2
B
1
GND
3
VCC
5
Y
4
VCCD_1.8
C203
R201
Q201
1
3
2
C201
VCCD_1.5
R218
VCCD_2.9
C200
C219
C216
VRTC_1.5
R203
C205
R202
C206
R216
R208
OSC200
C207
C218
C208
N
E
_
M
S
N
E
_
T
B
V
DSP_TMS
TR_RST
DSP_TDI
DSP_TCK
BP_VF
JIG_ON
FLASH_RST_M
P
E
E
L
S
_
T
B
L
E
S
_
T
U
O
_
O
I
D
U
A
T
E
D
_
B
S
U
A(0:24)
NAND_INT
L
E
S
_
T
U
O
_
R
A
E
BL_LED_EN
HALL_SENSOR
AMP_SHDN
ONENAND_CS
PCM_CLK
PCM_SYNC
PCM_OUT
PCM_IN
KEY_COL(0:4)
KEY_ROW(0:4)
DSP_TDO
TR_RSTRST
FLASH_RSTFLASH_RESET
M_HOLD
KEY_COL(4)
D(14)
D(9)
D(4)
DSP_DB(11)
DSP_DB(12)
DSP_DB(13)
DSP_DB(14)
DSP_DB(15)
DSP_DB(2)
DSP_DB(3)
DSP_DB(4)
DSP_DB(5)
DSP_DB(6)
DSP_DB(7)
DSP_DB(8)
DSP_DB(9)
RAM1_CS
LCDC_CS
ROM1_CS
YMU_CS
UPPER_BYTE
LOWER_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)
DSP_DB(0:15)
DSP_DB(0)
DSP_DB(1)
DSP_DB(10)
D(0:15)
D(15)
D(13)
D(12)
D(11)
D(10)
D(8)
D(7)
D(6)
D(5)
D(3)
D(2)
D(1)
D(0)
CP_WEN
CP_OEN
FLASH_RESET
XOENAQ
N
E
_
H
S
A
L
F
_
M
A
C
CAMPWR_EN
E
D
O
M
_
P
EAR_SWITCH
DLC_DETECT
USB_CON
USB_OEN
USB_DATA
DEBUG_RI
RTCALARM
DEBUG_RTS
DSP_RWN
DEBUG_RXD
SDS_RXD
SIMCLK
SIMDATA
UP_SCLK
UP_CS
UP_SDO
UP_SDI
DEBUG_TXD
SDS_TXD
DEBUG_DCD
DEBUG_DSR
DEBUG_DTR
DSP_INT
DSP_IO
INTRQ
JACK_IN
YMU_IRQ
KEY_COL(0)
KEY_COL(1)
KEY_ROW(4)
KEY_COL(2)
KEY_COL(3)
PSW1_BUF
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
CLK32K
LCDC_INT
USB_SUSP
USB_VPI
USB_VMI
USB_VPO
USB_VMO
SIMRST
PWR_KEEP
A(1)
A(2)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
A(17)
A(18)
A(19)
A(20)
A(3)
A(21)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
CP_TCK
CP_TDI
CP_TDO
CP_TMS
A(0)
A(22)
A(23)
A(24)
CLK13M_TR
DEBUG_CTS

SAMSUNG Proprietary-Contents may change without notice
SGH-E880 Flow Chart of Troubleshooting
2-
5
This Document can not be used without Samsung's authorization
2-1-3. Sim Part
There is any signal
pin#2,#3,#4 of CN100
"Insert SIM is displayed on the LCD
The Voltage @
the pin#1 of CN100
is 2.8V
Check the U100 & U200
Resolder or change U100
END
No
Yes
Yes
Yes
No
Check the SIM Card

SAMSUNG Proprietary-Contents may change without notice
SGH-E880 Flow Chart of Troubleshooting
2-
6
This Document can not be used without Samsung's authorization
CSP2600 SIM PART
SIM_RST
SIM_CLK
VSIM
SIM_IO
C107 C108
C109 C110
VSIM K12
P10
UP_RST R10
VDD12 J13
C11
VDD34
5
D
D
V0
1
C
7
6
D
D
V3
1
B
SIM_CLK K14
SIM_IO J11
SIM_RST K11
UP_CLK N9
UP_IO
U100
5
6
6
G
78
GG
910
G
CN100
11
22
334
4
5
C104
C106
C105
SIMRST
SIMCLK
SIMDATA

SAMSUNG Proprietary-Contents may change without notice
SGH-E880 Flow Chart of Troubleshooting
2-
7
This Document can not be used without Samsung's authorization
2-1-4. Microphone Part
The assembled status of
microphone is O.K
Microphone does not work
Reassembled the microphone
Resolder or change
C417,R413,R418,R442
END
No
Yes
Yes
Yes
Yes
No
The microphone is O.K
No Check U100
Check the reference voltage on mic path
The Voltage @ C417 is
about 2.2V ±10%
Yes