Page 1
7. SGH-E820 Flow Chart of Troubleshooting
1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.4V
Yes
C412(V_ISUP) = 2.7V? Check the PMU related to V_ISUP
Yes
Check the Clock at
R402=32KHZ
Yes
C433(VDD1) = "H"? Check the VDD1 circuit
Yes
No
Change the Battery
No
No
Resolder X400
No
C432(VDD2) & C431(VDD3)
= 2.8V?
Yes
Check for the clock at C139
= 13MHz
Yes
Check the initial operation
Yes
END
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No
No
7-1
Check the VDD2,VDD3 circuit
Check the clock generation circuit
(related to OSC101)
Page 2
Flow Chart of Troubleshooting
6 6
55
7 8
G
G
9 10
G
CN400
G
1 1
3 34 4
PC-D6-A6-H2.9-S
22
C401
100NF
C400
4.7UF
SIM_CLK
SIM_RST
SIM_IO
SIM_VCC
SIMCLK
SIMIO
8.2PF
8.2PF
C409
C410
X400
FC-135
2 1
10M
R402
VBAT
C413
6.3V
4.7UF
VBAT
VCC_CP
C417
4.7UF
C416
4.7UF
C415
4.7NF
L400
BLM11A102SPT
AVDD
AVDD_TEMP
AUDIO_SW2
VIBVDD
C418
1UF
VBAT
C427
470nF
C426
470nF
470nF
C425
C2
C6
B8
C1
D2
C3
D1
IO
RST
CLK
VCC
CPRES
C402
6.3V
4.7UF
VBAT
C404
100NF
A1
SIMSCN
B1
SIMSCP
A2
SI M
PUM P
SIMGND
B2
SIM
100NF
C403
Baseband power suppl y
VDD1
10K
R400
CHARGE
SIMVBAT
GENERATO
R
C10
K2
K1
J2
A9
D9
H3
K3
D10
H5
TM
U400
INTERRUPT
IN T
REC3
ON/OFF
CONTROL
REC1
REC2
CLK32
RSTO
ONKEY
AUXO N
SLPMOD
dat a
contro l
statu s
12C
INTERFACE
SCL
SDA F2
E3
PMU (IC)
PCF50601ET1-N5
32K
RSTON
RECO1
IT_PMU
JIG_REC
REF_ON
JACK_IN
ONKEY_N
CHARGER_OK
SCL
SDA
K9
K8
SIMIO
OSC32I
SIMCLK
SI M
32KHz XTAL
INTERFACE
PLL
CLOCK
GENERATOR
internal
clocks
htm p
ovdd
voltage
referenc e
bias current s
calibratio n
&
ON-CHI P
MIC BIAS
REFERENCE
refgnd
REFC
REFGND
MICBIAS
H8
K6
J6
VBAT
BAT400
RB414_IV02N
4.7UF
C406
C408
15PF
4.7PF
C407
MIC_BIAS
C405
TACL106M006R
BLVDD
E1
E2
D3
CHRIV
CHRREG
OSC32O
CHRVBAT
CHARGE
BATTERY
VOLTAGE
MONITOR
CONTROL
OSCILLATOR
VBA T
CLOCK
REAL-TIME
suppl y
internal
htmp
SUPPLY
MODULE
INTERNAL
SENSOR
TEMP HIGH
V_ISUP
BACKLIGHT
VBACK
VBAT K4
ISUPA
ISUPD
BLVBAT
BLVDD
H6
J4
J5
B7
A7
C411
100NF
470nF
C412
C414
R401
15K
BLVDD
BACKLIGHT
B9
A10
C9
C8
HVSSCP
HVSGND
HVSVBAT
SUPPLY
(CHARGE
HIGH VOLTAGE
LINREG
CONTROL
SUPPLY &
RF1SWS
RF1VDD
RF2SNS H9
RF2VDD
RFVBAT
RF1SNS
BBMGND
BBMSW
G10
F9
H10
G9
F10
E8
A8
C5
VBAT
1UF
VCC_SYN
VCC_RX_TX
PON_SYNT
VCC_RF_VCO
VCC_TX_BURST
2
B10
D8
NC 1 NC
HVSOC
HVSSCN
HVSVDD
PUMP+
LINREG)
SWITCH
RF1VDDS
RF2SWS
RF2VDDS
E10
J10
PON_TX
A3
VIBVD D
VIBVBAT
B3
B6
HFAVD D
VIB
A6
HFAVD D
HFAVBAT
A5 B5
HFAVBAT
HFA
AVD D
K10
AVDDS
K7
AVD D
J7
AVD D
AVDDVBAT
J8 J9
AVDDVBAT
A4
DVDD4
B4
DVDD 4
DVDD4VBAT
F8
DVDD4ON
DVDD3
H1 J1
DVDD3
H2
DVDD 3
DVDD3VBAT
H4
SEL3RB
DVDD2
G2 G1
DVDD2
DVDD 2
G3
DVDD2VBAT
E9
SEL12RB
F3
DVDD 1
DVDD1VBAT
F1
DVDD1
VSS21
D4 C4
VSS20
VSS19
E5 D5
VSS18
VSS17
C7 D6
VSS16
VSS15
E7 D7
VSS14
VSS13
F7 E6
VSS12
VSS11
VSS10
VSS9
VSS8
VSS7
VSS6
VSS5
VSS4
VSS3
VSS2
VSS1
VPRO G
C419
100NF
4.7UF
6.3V
C424
C420
100NF
C423
100NF
10UF
C422
6.3V
C421
10UF
6.3V
V_ISUP
G7 G8
VDD1
F6 G6
G5 K5
J3
VDD2
G4
F4
F5
E4
VDD3
H7
VDD_KEY
C429
27PF
C428
6.3V
4.7UF
1UF
C433
C432
4.7UF
4.7UF
C431
1UF
C430
VDD_KEY_ON
7-2
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Page 3
2. Initial
Flow Chart of Troubleshooting
Initial Failure
Yes
R207 (RSTON) ="H"?
Yes
Is U300 pin 4,6
(memory CE) OK?
Yes
Check the circuit around LCD
Yes
END
No
Check the circuit related to reset
No
Check the U300
7-3
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Page 4
Flow Chart of Troubleshooting
AMP_P
SPK_P
D_REF_13M
32K
RSTON
HD(0:15)
HA(1:26)
C225
10NF
3
K6 P9
N1
M8
B
C
VDDC_
VDDC_
D
VDDC_
VDD1
VDDE1_A
2
1
C8
N1
H1
VDDE1_B VDDE1_C
VDDE1_D
VDD1
F5
P11
CKI
P13
CKI32I
P14
M10
C10
H10
K14
H4
H3
H2
E5
H1
B1
E4
F3
F2
F1
E1
D1
E3
E2
B2
M4
J3
CKI32O
RESETN
RSTO_N
RST_N
AUXON
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
HD8
HD9
HD10
HD11
HD12
HD13
HD14
HD15
HA1
10K R207
R208
100K
HD(0)
HD(1)
HD(2)
HD(3)
HD(4)
HD(5)
HD(6)
HD(7)
HD(8)
HD(9)
HD(10)
HD(11)
HD(12)
HD(13)
HD(14)
HD(15)
HA(1)
A
VDDC_
VDD3
VDD3
VDD3
R303
R304
100K
100K
6
5
4 3
HA(23)
NCSFLAS H
U300
1
A
Y0
2
GND
VCC
_E
Y1
NC7SZ19L6X
VDD3
U301
1
6
CS_NAN D
HRD_ N HRD_N
2
A
GN D
_E
NC7SZ19L6 X
Y0
5
VCC
4 3
Y1
C306
R311
1NF
VDD3
1K
CS_NAN D
NCSRAM
HWR_ N
HA(25)
HA(26)
HA(1:22)
VDD3 VDD3
100K
100K 100K
R306
R305
R307
7-4
Memory
(128M ROM + 256M NAND + 64M SCRAM )
HA(1)
HA(2)
HA(3)
HA(4)
HA(5)
HA(6)
HA(7)
HA(8)
HA(9)
HA(10)
HA(11)
HA(12)
HA(13)
HA(14)
HA(15)
HA(16)
HA(17)
HA(18)
HA(19)
HA(20)
HA(21)
HA(22)
C303
C304
100N F
10N F
H1
G1
G2
D1
C1
G7
D7
C8
D8
H8
D2
G6
C5
D5
K5
G4
H2
H3
H5
D6
G3
C6
C2
C7
G5
F1
E1
F3
E7
F7
E8
F8
E2
F6
E6
L5
L4
J4
J1
F2
F4
F5
E3
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
VCCN
VCCN
VCCU
VCCU
VCCR
VCCQ U
_CEN
_CSU
_CER 1
_CER 2
_O E
_W E
_R E
_WPN
_LB
_U B
_WP/ACC
_RESET
R/_BR
R/_BN
_Z Z
KBB06B400M-F402
U302
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15/A- 1
_BYT E
VSS1
VSS2
L1
HD(0 )
DQ0
L2
HD(1 )
DQ1
J2
HD(2 )
DQ2
K3
HD(3 )
DQ3
L6
HD(4 )
DQ4
J7
HD(5 )
DQ5
L7
HD(6 )
DQ6
K8
HD(7 )
DQ7
K1
HD(8 )
DQ8
K2
HD(9 )
DQ9
L3
HD(10)
J3
HD(11)
J6
HD(12)
K7
HD(13)
J8
HD(14)
L8
HD(15)
J5
E5
C3
CL E
D3
AL E
H7
C4
NC
D4
NC
E4
NC
G8
NC
H4
NC
H6
NC
K4
NC
K6
NC
1
NC
2
NC
A1
DN U
B1
DN U
A8
DN U
B8
DN U
M1
DN U
N1
DN U
M8
DN U
N8
DN U
VDD3
R308 100K
HD(0:15)
HA(2 )
HA(3 )
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Page 5
3. Charging Part
Flow Chart of Troubleshooting
Abnormal charging part
Yes
Check the U204 pin 4
> 4.9V
Yes
U204 pin 1 = "H"?
Yes
Q201 pin 1(CHG_ON)
= "L"?
Yes
Check the U204 pin 3
≒ 4.2V
No
No
No
No
Check the circuit related to
V_EXT_CHARGE
Resolder or replace U204
Check the circuit related to
CHG_ON signal
Resolder or replace U204
Yes
END
7-5
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Page 6
Flow Chart of Troubleshooting
MES_BATT
V_EXT_CHARGE
C240
100N F
CHG_ON
C241
10UF
10V
1
ZD202
UDZS8.2B
Q201
BCR133T
R236
270K
R239
3
180K
2
Q202
4
S2
5
G2
6
D1
FDG6301N
VDD2
R231
U204
47 K
BAT
GND
_CHRG
3
2
1
END_OF_CHARGE
4
R235
1.8K,1%
3
D2
G1
S1
R237
270K
2
1
R238
180K
VCC
5
PROG
LTC4054ES5-4.2
VBAT
C243
10U F
6.3V
R233
330K,1%
R234
200K,1%
C242
100NF
CHARGER_OK
7-6
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Page 7
4. Sim Part
Phone can't access SIM Card
Yes
CN400 pin 1,5 = "H"?
Yes
Flow Chart of Troubleshooting
No
Check the sim charge pump
After Power ON,
Check SIMCLK Signal on CN400
pin3 in a few second
Yes
After SIM card insert,
CN400 pin 2 = "H(SIM_RST)"?
Yes
Check the SIM Card
Yes
END
No
Check the X400
No
Replace PBA
7-7
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Page 8
Flow Chart of Troubleshooting
Baseband power suppl
C10
T
IN
CLOCK
R
INTERRUPT
GENERATO
SIM
C403
100NF
B2
CHARGE
PUM P
INTERFACE
B1
A2
SIMGND
SIMVBAT
SI M
SI M
A1
SIMSCP
SIMSCN
C404
100NF
VBAT
C402
4.7UF
6.3V
VCC
CLK
RST
CPRES
SIMIO
SIMCLK
C400
C401
4.7UF
100NF
SIM_VCC
SIM_RST
SIM_CLK
SIM_IO
C2
C3
C1
D2
IO
D1
B8
C6
CN400
PC-D6-A6-H2.9-S
1 1
22
3 34 4
G
G
G
9 10
6 6
55
G
7 8
SIMIO
SIMCLK
7-8
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Page 9
5. Microphone Part
Microphone does not work
Flow Chart of Troubleshooting
Yes
Check the connection
from MIC
Yes
Check the circuit
from U200 to MIC
Yes
Check U200 PIN 1,9 = ' L' ?
Yes
Check the MIC
No
No
No
No
Resolder MIC
Resolder the R200, R201 R203, R207, C211
and C218
Replace PBA
Replace the MIC
Yes
END
7-9
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Page 10
Flow Chart of Troubleshooting
MIC201
MIC_PAD
20
NC
NC
1I N
1S1
D1
1S2
15
16
17
18 19
GND GND
GND GND
U200
STG3684QTR
GND
NC NC
6
5
7
AVDD
C200
100NF
13
14
C
NC
NC NC
VC
12
2S2
11
D2
C212 100NF
10
2S1
9
2I N
NC
8
AUDIO_SW3
C211
100NF
AUX_MIC
C217
10PF
C218
100NF
C210
NC
MIC_P
R202
C216
8.2PF
10K
MIC_N
C221
NC
MIC_BIAS
R200
510
C209
C208
NC
NC
MIC+
C214
C215
15P F
33PF
C220
C219
NC
NC
R201
1K
C213
100U F
4V
AUDIO_SW 3
R203
1K
R205
510
21
22
1
2
3
4
BUZ
MICP
MICN
AUXMICP
AUXMICN
MCLK
ADI
AFS
B11
A13
B13
B14
A14
D10
A8
B9
B8
DD
FSC
DCL
R224
3.9K
VDD1
DD
FSC
LINE_OUT
MIC_P
MIC_N
AUX_MIC_P
AUX_MIC_N
D_REF_13M
7-10
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Page 11
6. Speaker Part(Melody)
Speaker does not work
U303 pin 5 = 2.85V?
Flow Chart of Troubleshooting
Yes
No
Resolder or replace U303
Yes
Check the Clock signal at
Pin 1 of U304 (13MHz)
Yes
U304 pin 17,18 ≒ 1.8V?
(When U304 operate)
Yes
CN502 pin 48,50 ≒ 1.8V?
(When U304 operate)
Yes
CN601 pin 2,4 ≒ 1.8V?
(When U303 operate)
No
No
No
No
Check the clock generation circuit
(related to OSC101and U304)
Resolder U304
Resolder CN502
Change the board to board
FPCB
Yes
No
Is Speaker working?
Yes
END
Change the Speaker
7-11
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Page 12
Flow Chart of Troubleshooting
SPK_N
REC_N
REC_P
AMP_N
AUDIO_SW1
1
4
2
3
D2
2S1
5
2S2
6
GND
7
3S1
8
D3
3S2
9
N
1S2
1-2I
U202
STG3699
N
3-4I
4S1
11
10
21
22
NC NC
17
GND
D1
1S1
V+
4S2
D4
12
SPVDD
16
15
14
13
C231
100NF
AMP_P
SPK_P
MELODY_CLK
M_IR Q
LINE_OUT
C307
100P F
VDD3
VDD3
R321
51 K
R32 3
51 K
R324 22K,1%
U303
1
NC
VCC
2
IN
3
OU T
GN D
TC7SH04FU-TE85L
C30 8
100NF
VDD3
C312
100N F
1
2
3
4
5
6
7
8
9
15K,1%
G
CLKI
LED
/IR Q
/RST
NC
PLLC
VD D
VS S
VRE F
G
R32 9
34
35
VDD3
29
31
32
30
S
D
A0
/C
/R
IOVDD
U304
YMU765
1
2
HPOUT-L/MONO
HPOUT-R
EQ
EQ
10 11
12 13
C315
47N F
R327
4.7K,1%
R
/W
3
EQ
28
14
R328
33K
27 26
D0
D
SPVD
15
D1
MT R
SPOUT2
SPOUT1
S
SPVS
16
33
G
25
D2
24
D3
23
D4
22
D5
21
D6
20
D7
19
18
G
C318
1.2N F
17
36
C316
33UF
6.3V
VBAT
C309
27PF
C317
100NF
VDD3
5
R32 2
33 0
4
R326
3.3K
C313
C314
1N F
100N F
C319
22NF
HRD_ N
HA(1 )
MELODY_C S
HWR_ N
HD(0)
HD(1)
HD(2)
HD(3)
HD(4)
HD(5)
HD(6)
HD(7)
VI B
AMP_ N
AMP_ P
7-12
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Page 13
7. Key Data Input
Check Initial Operation
Flow Chart of Troubleshooting
Yes
When one of the keys is
pushed,
is it displayed on LCD?
Yes
When one of the keys is
pushed,
KBIO signal is OK?
Yes
END
No
Check the Dome sheet & Key Pad
No
Replace the PBA
7-13
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Page 14
Flow Chart of Troubleshooting
KBIO(0:7)
KBIO(0 )
KBIO(1 )
KBIO(2 )
KBIO(3 )
KBIO(7 )
KBIO(4)
KBIO(5)
KBIO(6)
ONKEY_N
12
SHARP
ZD303
5
4
NZQA5V6XV5T 1
12
DIGIT1
12
STA R
12
DIGIT10
1
2
3
12
DIGIT7
12
DIGIT8
12
DIGIT9
EN D
1 2
12
DIGIT4
12
DIGIT5
12
DIGIT6
12
DIGIT2
12
DIGIT3
KBIO(2:6)
KBIO(2)
KBIO(3)
KBIO(4)
CLR
12
12
LEFT
UP
12
12
SOFT1
12
SOFT2
12
12
12
DOW N
RIGHT
IN T
KBIO(5)
2
1
SEND
KBIO(6)
7-14
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Page 15
8. Receiver Part
Receiver does not work
U202 pin 9,13 = 1.5V?
CN502 pin 48, 50= 1.5V?
Yes
U202 pin 1,5 = 1.5V?
Yes
Yes
Flow Chart of Troubleshooting
No
Resolder R219,R220
No
Resolder or replace U202
No
Resolder CN502
Yes
CN502 pin 2 ,4= 1.5V?
Yes
SPK +,- PAD = 1.5V?
Yes
Check the soldering of the
spaeaker wire
Yes
Is Receiver working?
No
No
Change the board to board
FPCB
Change the SUB board
No
Modify the speaker wire soldering
No
Replace the Receiver
Yes
END
7-15
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Page 16
Flow Chart of Troubleshooting
SPK_P
SPK_N
REC_N
REC_P
AMP_N
AUDIO_SW1
2
3
N
2S1
1-2I
U202
STG3699
N
3-4I
9
10
1S2
4S1
1
21
22
NC NC
17
GND
16
D1
15
1S1
14
V+
13
4S2
D4
11
12
SPVDD
C231
100NF
AMP_P
4
D2
5
2S2
6
GND
7
3S1
8
D3
3S2
AUXADC1
AUXADC2
AUXADC3
AUXADC4
EARP
EARN
AUXSP
BUZ
MICP
MICN
AUXMICP
AUXMICN
MCLK
ADI
AFS
ACLK
ADO
BOEN
SW 2
SW 1
H
L
H
L
IP
J14
IN
F14
G14
E14
F13
B10
A11
A10
B11
A13
B13
B14
A14
D10
A8
DD
FSC
B9
DCL
B8
DU
A9
G11
L
L
H
MAIN-SPK
MAIN-REC
EAR-SPK
EAR-REC H
R215
R220 4. 7
R224
3.9K
10K,1%
4. 7 R219
DD
FSC
DCL
DU
BOEN
10K,1% R218
VDD1
1K R214
IRX_TX_P
IRX_TX_N
MES_BATT
EAR_ADC
VF
AVDD_TEMP
REC_P
REC_N
AUXSP
LINE_OUT
MIC_P
MIC_N
AUX_MIC_P
AUX_MIC_N
D_REF_13M
AUDIO_SW2
R216
100K,1%
TH201
NCP15WB473J04RC
100K,1%
7-16
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Page 17
9. Back Light (for Color Main LCD)
Backlight does not work
Yes
Flow Chart of Troubleshooting
Is LCD Contrast set on high
level in the Menu?
Yes
CN601 pin 5 = H ?
Yes
U601 PIN 1 = 12V ?
Yes
Replace the LCD Module
No
No
No
Set LCD Contrast on high level
Change the board to board
FPCB
Check the U601 & the related circuit
Yes
END
7-17
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Page 18
Flow Chart of Troubleshooting
VBAT
BACKLIGHT
C605
4.7UF
6.3V
L600
LQH2MCN220K02L
22uH
U601
6
SW
5
VI N
4
CTRL FB
LT3465
VOUT
GND
ZD600
1
2
3
UDZSTE-1716B
C604
1UF
16V
R614
1K
R607
12
LED +
LED -
7-18
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Page 19
10. Key Back Light
1. Main Key Part
Main Key Backlight does not work
Yes
C430 = "H"?
Yes
END
Flow Chart of Troubleshooting
No
Check the PMU related to "VDD_KEY"
2. Sub Key Part
Sub Key Backlight does not work
U502 PIN46 = "H"?
CN601 PIN6 = "H"?
Yes
Yes
Yes
U600 pin 4 = "H"?
No
Check the U502 or Replace PBA
No
Change the board to board
FPCB
No
Check the U600
Yes
END
7-19
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Page 20
Flow Chart of Troubleshooting
VDD_KE Y
SUB_KEY_BACKLIGHT
47
D300
AOT-0603P-W03- X
U60 0
MIC5213-3.3BC5
1
EN
2
NC
3
GND
OU T
R313 R312
47
R31 4
47
R315
47
R31 6
D304 D302 D303 D301
VBAT
5
IN
4
R317
47 47
D30 5
C600
470NF
R602 R604
47
D600
AOT-0603P-W03- X
D601
R603
47 47
D602
AOT-0603P-W03- X AOT-0603P-W03- X
AOT-0603P-W03- X
7-20
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D603
R605
47
Page 21
11. Camera part
Flow Chart of Troubleshooting
"Camera" function does not work
Yes
Check the Camera
connector on SUB PCB
Yes
U604 pin 10 = 2.8V?
Yes
OSC500 Pin 3 = 24MHz?
Yes
Is there another problem?
Yes
Replace the camera
module
No
Reconnect the camera module
No
Check the U604
No
Check OSC500 and R500
END
7-21
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Page 22
Flow Chart of Troubleshooting
IMAGE_RESET
SENSOR_VD D
YD(0:7 )
YD(0 )
PCL K
VSYNC
HSYN C
MCLK
C_SC L
C_SDA
C615
NC
LD(0:15)
YD(0:7)
YD(5 )
YD(4 )
YD(3 )
YD(2 )
YD(1 )
R611
4.7K
YD(0)
YD(1)
YD(2)
YD(3)
YD(4)
YD(5)
YD(6)
YD(7)
LD(15)
LD(14)
LD(13)
LD(12)
LD(11)
LD(10)
LD(9)
LD(8)
LD(7)
LD(6)
LD(5)
LD(4)
LD(3)
LD(2)
LD(1)
LD(0)
R612
4.7K
CAMERA_Connector
B4 A4
B5 A5
B6 A6
B7
A3
2
3
4
5
6
7
0
1
SCL
DI
DI
DI
DI
DI
DI
DI
F8
LD15
F9
LD14
G8
LD13
G9
LD12
H8
LD11
J8
LD10
J9
LD9
K7
LD8
K8
LD7
K9
LD6
K10
LD5
L8
LD4
L9
LD3
L10
LD2
M9
LD1
M10
LD0
C2
DVSS1
C8
DVSS2
C9
DVSS3
D3
DVSS4
D8
DVSS5
E9
DVSS6
F3
DVSS7
F10
DVSS8
H9
DVSS9
J10
DVSS10
K2
DVSS11
L5
DVSS12
M3
DVSS13
M4
DVSS14
M5
DVSS15
M8
DVSS16
B3
DVSS17
A7
DVSS18
DI
U500
MV317SAQ
STROBE
MVEP1 MVEP2
MVEP3
EXTVS
CLK_I
CLK_O
0
0
C7
C6
G3 E8
D1
G10 H1
CN602
AXK8L26115
1 1
33 44
5 5 6 6
77 88
9 9
11 12 12
11
13 13
15 15 16 16
17 17
19
19
21 21
23 23
25
25
B10 A10
C10
A
K
SD
PCL
MCLK
O
LREN LRS
LWEN
GP
M7
M6
C4
2
2
10
10
14
14
18
18
20 20
22
22
24
24
26
26
1
2
B9
A8
A9
C
NC
NC
HREF
A1
VSYN
RESET
D1
MA0
C1
MA1
B1
MA2
B2
MA3
L2
MINT
M2
MWEN
M1
MREN
L1
MCS
L7
VEO
D2
MD0
E1
MD1
E2
MD2
E3
MD3
F1
MD4
F2
MD5
G1
MD6
G2
MD7
H1
MD8
H2
MD9
H3
MD10
J1
MD11
J2
MD12
J3
MD13
K1
MD14
K3
MD15
C3
VEP1
C5
VEP2
B8
VEP3
D9
VEP4
E10
VEP5
L3
VEP6
L4
VEP7
K4
VEP8
A2
VEP9
LCS1
LCS2
K5
K6 L6
HA(1)
HA(2)
HA(3)
HA(4)
HD(0)
HD(1)
HD(2)
HD(3)
HD(4)
HD(5)
HD(6)
HD(7)
HD(8)
HD(9)
HD(10)
HD(11)
HD(12)
HD(13)
HD(14)
HD(15)
F
1U
100NF
C502
C503
CAMERA_FLASH_SUPPL Y
CAMERA_FLASH_F B
SENSOR_VDD
SENSOR_VDD
C_SCL
C_SDA
MCLK
PCLK
VSYNC
HSYNC
HA(1:4)
IMAGE_INT
HWR_N
HRD_N
IMAGE_CS
C500
24PF
MV317_VDD
C501
100NF
YD(6 )
YD(7 )
HD(0:15)
SENSOR_VDD_ON
YD(0:7 )
C616
1UF
R613
100K
LCD_CS
24M_OUT
24M_IN
SENSOR_VDD_ON
OSC500
CX-101F_24M
2
1
GND1
HOT
HOT
GND2
3
4
R500
1M
C504
12PF
C505
12PF
24M_IN
24M_OUT
RS
L_WR
7-22
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Page 23
12. GSM Receiver
Flow Chart of Troubleshooting
RF input : CH center freq : +67.7kHz
RX ON
Amp : -50dBm
Yes
U100 Pin7
>= -65dBm
Yes
U100 pin5
>= -65dBm
Yes
F101 pin1
>= -67dBm
Yes
U102
pin32 >= -70dBm
pin33 >= -70dBm
No
No
No
No
Resolder CN100, C104
Check U100
pin4 = L, pin8 = L
Yes
Resolder F101, C105, L107
Resolder L104, L105, L106
No
Check ANT Switch
control circuit
Resolder U100
Yes
U102 pin6, 7, 8, 9
>= 1V
Yes
R126, R128, R129,
R130 >= 1V
Yes
Check U205
END
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No
Check U102
pin4, 10, 22 >=2.7V
Yes
7-23
No
Check & Resolder
U102, R103, R104
RF13MHz, RF PSU Part
Resolder U102
Page 24
Flow Chart of Troubleshooting
13. GSM Transmitter
TX ON (5Level)
Yes
U100 Pin7
>= 20dBm
Yes
U100 pin11
>= 18dBm
Yes
U101 pin6
>= 18dBm
Yes
U101 pin48
>= -11dBm
Yes
OSC100 pin1
>= -15dBm
No
No
No
No
No
Resolder CN100, C104
Check U100
pin4 = H (2.68V),
pin2,8 = L
Yes
Resolder L115, C112
Check U101
+VBATT, pin42,43
Resolder R114, R116, R117
OK?
Yes
No
Check ANT Switch
control circuit
Change or Resolder U100
No
Resolder or Change U101
Check +VBATT or PAM
control signal
Yes
U102 pin6, 7, 8, 9
>= 1V
Yes
Check U205
END
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No
Check U102
pin4,10,22 >=2.7V
OK?
Yes
7-24
Check & Resolder RFLO
No
signal, RF13MHz,
RF PSU Part
Resolder U102
Page 25
14. DCS Receiver
Flow Chart of Troubleshooting
RF input : CH center freq : +67.7kHz
RX ON
Amp : -50dBm
Yes
U100 Pin7
>= -65dBm
Yes
U100 pin1
>= -65dBm
Yes
F102 pin1
>= -67dBm
Yes
U102
pin38 >= -70dBm
pin39 >= -70dBm
No
No
No
No
Resolder CN100, C104
Check U100
pin4 = L, pin8 = L
Yes
Resolder F102, C106, L114
Resolder L108, L110, L111
No
Check ANT Switch
control circuit
Resolder U100
Yes
U102 pin6, 7, 8, 9
>= 1V
Yes
R126, R128, R129,
R130 >= 1V
Yes
Check U205
END
SAMSUNG Proprietary-Contents may change without notice
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No
Check U102
pin4, 10, 22 >= 2.7V
Yes
7-25
No
Check & Resolder
U102, R103, R104
RF13MHz, RF PSU Part
Resolder U102
Page 26
Flow Chart of Troubleshooting
15. DCS Transmitter
TX ON (5Level)
Yes
U100 Pin7
>= 20dBm
Yes
U100 pin9
>=18dBm
Yes
U101 pin31
>= 18dBm
Yes
U101 pin37
>= -11dBm
Yes
OSC100 pin5
>= -15dBm
No
No
No
No
No
Resolder CN100, C104
Check U100
pin4 = L,
pin8 = H (2.68V)
Yes
Resolder L116, C111
Check U101
+VBATT,pin42,43
OK?
Yes
Resolder R108, R110, R111
No
No
Check ANT Switch
control circuit
Change or Resolder U100
Resolder or Change U101
Check +VBATT or PAM
control signal
Yes
U102 pin6, 7, 8, 9
>= 1V
Yes
Check U205
END
SAMSUNG Proprietary-Contents may change without notice
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No
Check U102
pin4,10,22 >= 2.7V
OK?
Yes
7-26
No
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Resolder U102
Page 27
Flow Chart of Troubleshooting
VCC_RX_TX
1
6
E1
5
C1
B1
2 B2
4
3
C2
E2
Q102
PEMD10
1
6
E1
C1
5
B1
2 B2
4
3
C2
E2
Q101
PEMD1 0
1
6
E1
C1
5
B1
2 B2
3
4
C2
E2
Q100
PEMD1 0
2.7nH
L10 0
F100
EFCH1960TCA1
G
6
G
5
G
4
CN10 0
C
KMS-510- D
3
A
2
G
1
ANT100
ANT
ANT_SW3
ANT_SW1
ANT_SW2
R101
100K
C103
10P F
100K
R100
10PF
C102
PCS_RX EGSM_TX
R102
100K
C101
10PF
DCS_PCS_TX
22nH
L105
L101
12nH
L10 6
2.2nH
L10 4
2.2nH
L10 2
2.7nH
4
3
3
4
OU T
OU T
C100
39PF
ANT_HOLE
OU T
OU T
5
5
F101
GG
GG
2
2
IN
IN
1
1
FAR-F5EB-942M50-B28CH
L107
L103
15nH
15nH
C105
39PF
33PF
C104
VCC_RF_VCO
VCC_RX_TX
C108
100N F
C107
8.2PF
18nH
L110
5.6nH
L11 1
L10 8
5.6nH
3
OU T 4 OU T
G
5
F102
G
2
IN
EFCH1842TCAF
1
12nH
L114
39PF
C106
9
11 3
1
U100
DCS_RX
GSM_RX 5 GSM_TX
DCS|PCS_T
SHS-C090T
G6
G5
13 14
G4
7
AN T
12
G3
10
G2
PCS_R X
6
VC1
VC2
VC3
2
4
8
33nH L11 3
33nH L109
33nH
L112
PCS_RX
EGSM_T X
DCS_PCS_TX
PON_RX
PON_SYNT
VCC_SY N
100NF
C110
100N F
8.2PF
C109
C115
C116
8.2PF
C114
100PF
100PF
C113
150PF
C119
3.6K
R103
C118
6.8N F
R104
2.2K
390PF
C120
21
22
23 24
25
26
27
28
29 30
1.8NF
C117
RFVCC
31
RF_BBI_CLK
RF_BBI_DATA
RF_EN_SYNT
VCC_CP
C132
220N F
220K
8.2P F
C125
100N F
C124
17
19
18
16
20
EN
CL K
DATA
REFVCC
RFCPVCC
RFCP O
SYNVCC
RXO N
SYNON
RFVCOVCC
RFTUNE
U102
GNDTUN E
RFLOVCC
FESW 1
FESW 2
RFGND1
GSMI A
GSMI B
PCSIA
PCSIB
34
32
35
36
33
VCC_TX_BURS T
C128
R109
OSC101
VC-TCXO-214C6(26MHz )
4
VCC
VCO N
3
OU T
GN D
C13 0
220N F
R107
1.5K
1N F
C131
15
12
13
11
14
REFI N
CLKOUT
REFGND
CLKFDB X
CAFCSUP
41
GND1
10
IFVCC
9
QB
8
QA
7
IB
6
IA
TXON
45
TXCPVCC
UAA3536HN/C3
RFGND2
37
C129
1NF
1UF
3
TXCP O
2
EXTRES
1
TXRFI
NC 1
NC 2
DCSI A
DCSI B
FESWON
GND2
GND3
GND4
44
45
46
40
42
43
38
39
2
4
BAND2
3 6
BAND1
GND1
7
8
GND2
VCC2
10 12
11
GND3
VCC1
GND4
GND5
OUT1
OUT2
CONTRO L
1
5
9
MELODY_CL K
D_REF_13M
QRX_TX_ N
QRX_TX_ P
IRX_TX_N
IRX_TX_P
VCC_SY N
AF C
220K
R115
10 K
R11 2
100PF
C134
1
2
R113
R123 2.7K
10N F
C13 9
22K,1%
R122
47
R120
0
NC
R121
PON_TX
5.6K,1%
5.6K,1% R13 0
R12 95 .6K,1%
R12 8
R12 65 .6K,1%
C149
120PF
120PF
C148
C147
120PF
120PF
C14 6
10K
R124
8.2P F
C145
100N F
C144
C151
27PF
C150
100NF
22NF
C14 2
R12 7
100
68PF
C14 0
200
R125
C14 1
VCC_CP
20PF
OSC100
VOG1810F27KRA
C112
0.5PF
L115
3.9nH
L116
6.8nH
C111
3.9PF
U101
RF3146
C123
120PF
5.1K
R106
C122
180PF
R105
7.5K
C121
NC
RAM P
VBAT
18
R108
48
6
31
37
4
G1
5 7
G2
DSC_PCSI N
DCS_PCSOUT
G3
G4
30
GSM850_GSM900I N
32
G5
GSM850_GSM900OUT
34
GND1_GSM
G6
G1 G2
G7
G8
G3
G9
G4
G10
36
G11
38
VRAM P
GSM_INTERSTAGEGND
TXENABLE
VBATT1
VBATT2
BAND_SEL
G12
47
45
1
41
42
43
40
C127
100PF
6.3V
C126
100UF
ANT_SW 3
PAM_TX_EN
R119
180,1%
R11 8
180,1%
200
R110
200
R117
R114
18
R111
200
R116
VCC2_GSM
VCC3_GSM
21 18
VCC3_DCS_PCS
35 2
VCC2-DCS_PCS
39
VCC1
VCC1_GSM
46
19 20
VCCOUT1
VCCOUT2
200
1NF
C138
C137
1NF
1NF
C136
10NF
C13 5
100PF
C133
C143
10PF
C152
10PF
R132 1K
R131 1K
TXVCO_SW 1
TXVCO_SW 2
7-27
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