Page 1
7. SGH-E630 Flow Chart of Troubleshooting
1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.4V
Yes
C513(V_ISUP) = 2.7V? Check the PMU related to V_ISUP
Yes
Check the Clock at
R501=32KHZ
Yes
C530 (VDD1) = "H"? Check the VDD1 circuit
Yes
C529(VDD2) & C528(VDD3)
= 2.8V?
No
Change the Battery
No
No
Resolder X1
No
No
Check the VDD2,VDD3 circuit
Yes
Check for the clock at C137
= 13MHz
Yes
Check the initial operation
Yes
END
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No
7-1
Check the clock generation circuit
(related to U100)
Page 2
Flow Chart of Troubleshooting
Power On
4 5 6
G G
G
CN500
G
0-0292123-1
2
3
1
SIM_IO
SIM_RST
SIM_VCC
SIM_CLK
C2
C1
C3
IO
RST
CLK
VCC
100N F
C500
A1
SIMSCN
B1
SIMSC P
SIM
VBA T
Baseband power supply
VDD1
10K
R500
A2
SI M
PUM P
SIMGND
B2
CHARGE
SIMVBAT
R
C10
IN T
K2
REC3
K1
J2
REC1
REC2
A9
CLK32
D9
RSTO
H3
ONKEY
K3
AUXO N
SLPMOD
D1 0
H5
TM
PCF50601ET1-N5
U500
PMU (IC)
D2
C505
C504
C503
C502
ON/OFF
MIC_BIAS
7
8 9
10
INTERRUPT
CONTROL
12C
INTERFACE
SD A
SCL
E3
F2
SCL
NC
NC
100N F
F
4.7U
B8
D1
SIMIO
CPRES
SI M
GENERATO
statu s
contro l
data
SD A
100N F
C509
VCC_CP
32K
VBA T
RF power supply
12PF
12PF
C512
C506
SIMCLK
SIMI O
X1
1
2
FC-255
T502
T501
C6
SIMCLK
INTERFACE
htmp
ovdd
reference
voltage
&
ON-CHI P
REFERENCE
refgnd
REFC
REFGND
H8
K6
C508
C507
M500
10M
R501
VBA T
K8
K9
OSC32I
32KHz XTA L
OSCILLATO R
PLL
CLOCK
GENERATO R
clocks
internal
calibration
bias current s
MIC BIAS
TEMP HIGH
MICBIAS
J6
4.7UF
10NF
PO S
1
RB414_IV02N
2
NEG
E1
E2
D3
CHRIV
CHRREG
OSC32O
CHRVBAT
CHARGE
BATTERY
VOLTAGE
MONITOR
CONTROL
VBAT
CLOCK
REAL-TIME
htmp
supply
internal
SUPPLY
SENSOR
MODULE
INTERNAL
VBAT
K4
VBAT
C511
100NF
V_ISUP
CONTROL
SUPPLY &
BACKLIGHT
ISUPD
ISUPA
BLVBAT
BLVD D
BBMGN D
BBMSW
VBACK
H6
J4
J5
C5
B7
A7
A8
VBAT
T63
3.3K
U802
C513
470N F
1UF
C514
C517
4.7UF
L803
BLM11A102SPT
C518
2.2U F
C516 100N F
B9
A10
C9
C8
HVSSCP
HVSSCN
HVSGND
HVSVBAT
SUPPLY
(CHARGE
HIGH VOLTAGE
LINREG
SWITCH
RF2SNS
RF2VDD H10
RFVBAT G9
RF1SNS F10
RF1VDD
RF1VDD S
H9
F9
E8 RF1SW S
G10
2
B10
D8
HVSO C
HVSVDD
VIB
HF A
AVDD
PUMP +
LINREG )
T
T
DVDD 4
T
DVDD 3
T
DVDD 2
DVDD 1
T
RF2SW S
RF2VDD S
E10
J10
C520
C519
AVD D
AVDD_TEM P
VDD_AM P
VDD_KEY
C521
1UF
NC 1 NC
A3
VIBVD D
B3
VIBVBA
T
B6
HFAVD D
A6
HFAVD D
HFAVBA
T
A5 B5
HFAVBA
T
K10
AVDDS
K7
AVD D
J7
AVD D
AVDDVBA
J8 J9
AVDDVBA
A4
DVDD4
B4
DVDD4VBA
F8
DVDD4ON
DVDD3
H1 J1
DVDD3
H2
DVDD3VBA
H4
SEL3RB
DVDD2
G2 G1
DVDD2
G3
DVDD2VBAT
E9
SEL12RB
F3
DVDD1VBA
F1
DVDD1
VSS21
D4 C4
VSS20
VSS19
E5 D5
VSS18
VSS17
C7 D6
VSS16
VSS15
E7 D7
VSS14
VSS13
F7 E6
VSS12
VSS11
G7 G8
VSS10
VSS9
F6 G6
VSS8
VSS7
G5 K5
VSS6
J3
VSS5
G4
VSS4
F4
VSS3
F5
VSS2
E4
VSS1
H7
VPRO G
100NF
NC
C523
10U F
C522
10UF
R503 0
1U F
C525
6.3V
10UF
C526
C524
470N F
VBAT
V_ISUP
1U F
C530
1UF
C529
1UF
C528
1U F
C527
C501
T500
32K
RECO 1
IT_PM U
JIG_REC
JACK_IN
100NF
RSTO N
REF_O N
ONKEY_N
CHARGER_O K
BACKLIGH T
2.2UF
C515
VBAT
VCC_SYN
VCC_RX_TX
PON_TX
PON_SYN
VCC_TX_BURST
VCC_RF_VCO
RF power supply
VDD1
Baseband power supply
T504
T503
2V85
TYP
VI B
V_MOD E
VDD3
VDD2
VDD_VIB
SIGNAL
VDD3
TYP
2V7
2V1
V_ISUP
SIGNAL
MIC_BIAS
2V95
3V05
2V65
2V65
AVDD
AVDD_TEM P
VDD_VIB
3V25
2V7
2V7
BL_VDD
VCC_SYN
VCC_RX_TX
3V
3V05
4V
5V
VDD_KEY
VDD_AM P
SIMVD D
VCC_CP
1V35
2V7
2V35
2V85
2V7
VDD2
VDD1
VCC_RX_BURST
VCC_RF_VCO
7-2
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Page 3
2. Initial
Flow Chart of Troubleshooting
Initial Failure
Yes
R300 (RSTON) ="H"?
Yes
Is U403 pin 4,6
(memory CE) OK?
Yes
Check the circuit around
LCD & U403 (Short or not solder)
Yes
END
No
Check the circuit related to reset
No
Check the U403
7-3
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Page 4
Flow Chart of Troubleshooting
Initial
AVD D
C303
C302
pin B12
pin C12
C307
C306
pin F12
AVDD
C301
C308
pin D1 4
AVDD
C305
pin C8
pin C9
VDD1
C304
AVD D
VDD1
100N F
C300
AVDD
VDD3
VDD 2
VDD 1
VDD1
N
33PF
10N F
100N F
100NF
10N F
33PF
100N F
100N F
C1 2
B12
D1 4
C9
F12
P1 2
L3
G2
M6
P4
C1
P8
H11
C8
N1 2
P9
K6
M8
N1 3
F5
U300
OM6357
TXVCO_SW 3
TXVCO_SW 2
TXVCO_SW 1
ANT_SW 1
EL_LIGHT_CO
REF_O N
V_MODE
L10
N9
G10
AUXST
GPON 1
GPON 2
VDD_VBOUT
VDD_VB
VDD_REF
VDD_ D
VDD_BB
AVD D
VDDE3_G
VDDE3_F
VDDE3_B
VDDE3_A
VDDE2_E
PDCU
VDDE2_C
VDDE1_D
VDDE1_C
VDDE1_B
VDDE1_A
PCF50874
VDDC_ D
VDDC_ C
VDDC_ B
VDDC_ A
CGU
RESETN
CKI
CKI32I
CKI32O
P11
P13
P14
C10
ANT_SW 3
PON_RX
PON_TX
PON_SYN
G12
H12
B7
C6
E7
D5
A6
RFSIG0
K10
D6
RFSIG1
D7
B6
A7
C7
RFSIG2
RFSIG3
RFSIG4
E10
CCLK
TXO N
RXO N
RFSIG6
RFSIG7
RFSIG8
RFSIG9
RFSIG5
RFSIG10
RFCU
OOL
RSTO_N
RST_N
HD0
AUXO N
H4
H3
K14
H10
M1 0
HD9
HD2
HD3
HD4
HD5
HD6
HD7
HD8
HD1
J3
F3
F2
E5
E4
B1
H2
H1
AFC
RF_BBI_CLK
RF_BBI_DATA
RAM P
RF_EN_SYN
VF
TEMP_PRODUCT
MES_BATT
IRX_TX_N
QRX_TX_N
IRX_TX_P
EARP_P
AUXSP
QRX_TX_P
AVDD_TEM P
10K
R301
100N F
C309
C14
H14
K12
RFE_N 2
A
CS I
VREF
A 1 A
D
H13
J13
E12
D13
D12
IP
QP
QN
AUXDAC1
AUXDAC2
AUXDAC3
D
A
D
D
A
A
BS I
DS P
SIOX
J12
D8
E9
D9
CD I
CEN
CD O
RFE_N 0
A
D
D
EARP_N
J14
A11
B10
A10
F14
G14
E14
F13
IN
D
BU Z
EARP
EARN
AUXSP
AUXADC1
AUXADC2
AUXADC3
AUXADC4
A
D
EM I
HD15
HD10
HD11
HD12
HD13
HD14
E2
F1
E1
E3
B2
D1
HA8
HA1
P3
M4
HA10
HA11
HA12
L4
K5
N3
HA13
L2
L1
P2
N2
N1
M1
M3
M2
HA9
HA3
HA4
HA5
HA6
HA7
HA2
HA21
HA14
J2
HA22
HA15
HA16
HA17
HA18
HA19
HA20
J5
J4
K2
P5
K3
K4
N6
G4
D_REF_13M
IT_PM U
SD A
SCL
SIMIO
SIMCLK
VDD1
MIC_P
MIC_N
AUX_MIC_P
AUX_MIC_N
EARP_HF
B11
ASI
SIOY
HWR_N
HA23
L5
L6
DD
BIOCLK
DU
FSC
DC L
BOEN
BIEN
BDIO
3.9K R302
T60
T59
T57
T58
A13
D10
B13
A14
B14
MICP
MICN
AUXMIC P
AUXMICN
D
A
E11
F10
F11
G11
B8
A8
A9
B9
AD I
AFS
BIEN
AD O
BDIO
ACLK
MCLK
BOEN
BIOCLK
PCF50732
SC
GPI O
HRD_N
H5
GPIO 2
GPIO 3
GPIO 4
GPIO 5
GPIO 6
CS_N 1
CS_N 2
CS_N 3
CS_N 0
G3
N4
G5
M5
GPIO 7
GPIO 0
GPIO 1
L8
L7
L9
P7
K9
N7
M9
M1 2
R304
2.2K
VDD2
2.2K
R303
C2
B3
M1 4
M1 1
M1 3
F4
E6
SCK
SD A
SIMIO
PWM0
PWM1
SIMCLK
SIMERR
VSS_VBOUT
C11
VSS_VB
A12
VSS_REF
C13
VSS_D
D1 1
VSS_BB
E13
VSS_P
N5
VSS_O
P1
VSS_N
K1
VSS_M
G1
VSS_K
C3
VSS_I
E8
J_SEL
TCK
TD O
TRST_N
HWR_N
TD I
VSS_H
G1 3
VSS_G
N1 1
VSS_F
N1 4
VSS_E
N1 0
VSS_C
M7
VSS_B
J1
VSS_A
K7
AVSS
P10
J_SEL
B4
M
II C
PW
SIMU
UART1
UART0
TRST_N
A1
TD O
D3
JTAG
TCK
A3
TM S
A2
TD I
D2
TXD
A4
RXD 1
D4
RXD 0
C4
TXD 0
C5
RXT0_N
A5
CTS0_N
B5
TM S
B_TRST
J_SEL
B_TCK
B_TDI
B_TM S
B_TDO
B_W R
SIM_BOOT
GROUN D
J_SEL
JT 1
TRST_N
TD O
JT 4
TCK
JT 2
JT 3
JT 5
TM S
TD I
TXD 1
RXD 1
RXD 0
TXD 0
RTS0
CTS0
KBS
KBIO 2
KBIO 3
KBIO 4
KBIO 5
KBIO 6
KBIO 7
KBIO 0
GPIO10
GPIO 8
GPIO 9
P6
K8
N8
KBIO 1
J10
J11
L11
L13
L12
L14
K13
K11
100K
R300
32K
RSTO N
D_REF_13M
HD(4)
HD(3)
HD(2)
HD(1)
HD(0)
HD(0:15)
HD(8)
HD(7)
HD(6)
HD(5)
HA(1)
HA(7)
HA(6)
HA(5)
HA(4)
HA(3)
HA(2)
HD(15)
HD(14)
HD(13)
HD(12)
HD(11)
HD(10)
HD(9)
HA(1:23)
HA(15)
HA(14)
HA(13)
HA(12)
HA(11)
HA(10)
HA(9)
HA(8)
3
_E
U301
Y1
NC7SZ19L6X
4
VDD3
MELODY_CS
HA(23)
HA(21)
HA(22)
HA(17)
HA(16)
HA(20)
HA(19)
HA(18)
T301
T302
HA(20) IMAGE_CS
HRD_N
HWR_N
1
2 5
A
GN D
VCC
Y0
6
U302
NC7SZ19L6X
VDD3
T303
EL_EN
M_RST
NCSRAM
CHG_O N
irDA_DOW N
IMAGE_RESET
NCSFLASH
1
2
A
_E
GND
VCC
Y0
Y1
5
6
43
CS_NAND
7-4
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C319
pin L3
100N F
VDD 3
KBIO(3)
KBIO(2)
KBIO(1)
KBIO(0)
KBIO(7)
KBIO(6)
KBIO(5)
KBIO(4)
T304
B
FLI P
CTS0
IMAGE_INT
END_OF_CHARGE
0
CS_N 3
1
00
HA(20)
X
X
CS_N 2
X
X
CS_N 0
IMAGE_CS
MELODY_CS
VDD3 VDD1
VDD2 VDD3
KBIO(0:7)
VDD2
X
VDD1 VDD3 VDD1
X
0
VDD1
CS_NAND
C318
100N F
pin G2
C317
100N F
pin M6
C316
pin P4
100N F
C315
100N F
C314
100N F
pin P8 pin C1
C313
100N F
pin H11
C312
100N F
pin M8
pin P9
C311
100N F
pin N1 2
pin N1 3
C310
100N F
pin F5
Page 5
3. Charging Part
Flow Chart of Troubleshooting
Abnormal charging part
Yes
Check the C605
> 4.9V
Yes
U602 pin 8 = "H"?
Yes
U602 pin 5 = "L"?
Yes
Check the C601
≒ 4.2V
Yes
END
No
No
No
Check the the circuit related to
+DC_VOLT
Resolder or replace U602
Check the circuit related to
CHG_ON signal
No
Resolder or replace U602
7-5
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Page 6
Flow Chart of Troubleshooting
Charging
MES_BATT
VBAT
NC
C602
220K
R606
R605
330K
6.3V
C601
10U F
END_OF_CHARGE
NC
VDD2
VDD2
R609
47K
R604
8
_CH G
U602
VL
1
CHG_O N
CHARGER_OK
7
5
6
MAX1508ETA
_EN
BATT
G
_ACO K
11 12
GG
10
G
IN
2
9
GND
ISET
3
4
R610
2.4K,1%
C606
470nF
C604
100PF
10V
10U F
C605
+DCVOLT
7-6
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Page 7
4. Sim Part
Phone can't access SIM Card
Yes
CN500 pin 1,5 = "H"?
Yes
Flow Chart of Troubleshooting
No
Check the sim charge pump
Check SIMCLK Signal on CN500
After Power ON,
pin3 in a few second
Yes
After SIM card insert,
CN500 pin 2 = "H(SIM_RST)"?
Yes
Check the SIM Card
Yes
END
No
Check the 32k OSC
No
Replace PBA
7-7
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Page 8
Flow Chart of Troubleshooting
5. Microphone Part
Microphone does not work
Check the connection
from MIC
Yes
No
Resolder MIC
Yes
No
Check the circuit
from U1102 to MIC
Yes
Check the MIC
Yes
END
Resolder the L700, L701, R704, R708, C707
and C712
No
Replace the MIC
7-8
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Page 9
Microphone
Flow Chart of Troubleshooting
MIC_P
10PF
C702
C700
4V
33UF
C707
R704
1.2K
MIC_BIAS
1K
R700
L700
C709
100N F
BLM10B750SBPT
MIC_N
10PF
10K
R706
100N F
C712
L701
10PF
C714
R708
2.2K
BLM10B750SBPT
NC
C703
10PF
C701
V705
VC040205X150R
NC
C711
47PF
C708
1.8PF
C710
2
1
MI C
M700
NC
C715
10PF
C713
V700
VC040205X150R
7-9
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Page 10
Flow Chart of Troubleshooting
6. Speaker Part(Melody)
Speaker does not work
U409 pin 5 = 2.85V?
Check the Clock signal at
Pin 1 of U402 (13MHz)
Yes
No
Resolder or replace U409
Yes
No
Check the clock generation circuit
(related to U101 and U402)
Yes
U402 pin 17,18 ≒ 1.8V?
(When U402 operate)
Yes
CN606 pin 40,42
≒ 1.8V?
Yes
Is Speaker working?
Yes
END
No
Resolder U402
No
Check the circuit related to
"SPK_P/SPK_N" signal
No
Change the Speaker
7-10
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Page 11
Speaker
Flow Chart of Troubleshooting
HA(1)
HRD_ N
MELODY_C S
VDD3
HD(0)
HWR_N
HD(1)
HD(2)
HD(3)
HD(4)
HD(5)
24
23
25
D2
26
D1
27
D0
28
/W R
29
/C S
30
A0
31
/R D
32
IOVDD
CLKI
2
1
22
D4
D3
LED
D5
/RST
/IRQ
4
3
HD(7)
HD(6)
21
20
D6
D7
U402
YMU762 MA-3
NC
PLLC
5
6
AMP_N
VI B
18
19
MT R
SPOUT 2
O
VDD
7
8
27PF
C401
17
SPOUT 1
D
R
VREF 9 VS S
AMP_P
SPVSS
15 16
SPVD
14
EQ 3
13
EQ 2
12
EQ 1
11
HPOUT-
10
HPOUT-L/MON
C404
100N F
VDD_AM P
C407
100N F
1U F
10V
C406
0
R404
C405
220N F
C408
1.2N F
R406
6.8K
1.2K
R405
C420
100N F
EARP_H F
C421
100N F
R421
2.2K
220N F C419
VDD2
C403
100N F
3.3K
330
R401
M_LED
M_RST
VDD2
VDD2
5
U409
1
R400
4
VCC
NC
C400
OUT
IN
GND
2
3
TC7SH04FU-TE85L
51K
R402
51K
100PF
MEL_13M
R403
1N F
C402
HPOU T
7-11
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Page 12
Flow Chart of Troubleshooting
7. Key Data Input
Check Initial Operation
Yes
When one of the keys is
When one of the keys is
pushed,
is it displayed on LCD?
Yes
pushed,
KBIO signal is OK?
Yes
END
No
Check the Dome sheet & Key Pad
No
Replace the PBA
7-12
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Page 13
8. Receiver Part
Receiver does not work
U702 pin 2, 10 = 1.5V?
Yes
Yes
U702 pin 4, 8 = "H"?
Yes
U702 pin 3, 9 = 1.5V?
Flow Chart of Troubleshooting
No
Resolder R727, R730, U702
No
Resolder U702
No
Resolder or replace U702
Yes
EAR700 pin 4, 5 = short?
Yes
CN606 pin 23,25 = 1.5V?
Yes
Check the soldering of the
speaker wire
Yes
Is Receiver working?
No
Resolder EAR700
No
Replace the CN606
No
Modufy the speaker wire soldering
No
Replace the Receiver
Yes
END
7-13
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Page 14
Flow Chart of Troubleshooting
9. LCD Part
LCD does not work
Is LCD Contrast set on high
level in the Menu?
CN800 pin 24 = 2.8V?
Yes
No
Set LCD Contrast on high level
Yes
No
Check the R409, C415
Yes
CN800 pin 19(L_WR),
20(RS) is OK?
Yes
Replace the LCD Module
Yes
END
No
Check the U400
7-14
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Page 15
10. Key Back Light
1. Main Key Part
Main Key Backlight does not work
C524 = "H"?
Flow Chart of Troubleshooting
Yes
No
Check the PMU related to "VDD_KEY"
Yes
C531 = "H"?
2. Sub Key Part
Sub Key Backlight does not work
C531 = "H"?
No
Check the PMU related to "BLVDD"
Yes
END
Yes
No
Check the PMU related to "BLVDD"
Yes
END
7-15
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Page 16
Flow Chart of Troubleshooting
11. Camera part
"Camera" function does not work
Yes
Check the Camera
connector on LCD module
Yes
CN800 pin 48, 50 = 2.8V?
Yes
OSC400 Pin 3 = 27MHz?
Yes
CN800 pin 24 = 2.8V?
Yes
Is there another problem?
No
Connect the camera module
No
Check LCD and CN800
No
Check OSC400 and R414
No
Check the R409, C415
Yes
Replace the camera
module
END
7-16
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Page 17
Flow Chart of Troubleshooting
12. GSM Receiver
RF input : CH center freq : +67.7kHz
RX ON
Amp : -50dBm
Yes
U205 Pin8
>= -65dBm
Yes
U205 pin5,pin6
>= -65dBm
Yes
U100
pin32 >= -70dBm
pin33 >= -70dBm
Yes
U100 pin 6, 7, 8, 9
>= 1V
Yes
No
No
No
No
Resolder CN201, C202
Check U205
pin 9, 10, 12 = L
Yes
Resolder L100, L101, L102
Resolder U100
or Check pins related to U100
No
Check ANT Switch
control circuit
Resoder U205
R116, R117, R118,
R119 >= 1V
Yes
Check U1102
END
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7-17
Page 18
13. GSM Transmitter
TX ON (5Level)
Yes
Flow Chart of Troubleshooting
U205 Pin
>= 20dBm
No
U205 pin11
>= 20dBm
No
U201 pin12
>= 20dBm
No
U201 pin7
>= -11dBm
No
OSC401 pin1
>= -8dBm
Yes
Yes
Yes
Yes
Yes
Resolder CN201, C202
Check U205
pin10 = H (2.68V),
pin9, 12 = L
No
Resolder C203
Check U201
+VBATT, C212,
R204 OK?
No
Resolder R204
Yes
Change or Resolder U205
Check ANT Switch
control circuit
Yes
Resolder or Change U201
Check +VBATT or PAM
control signal
No
U100 pin6, 7, 8, 9
>= 500mV
Check U1102
END
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Yes
or Check pins related to U100
Resolder U100
7-18
Page 19
Flow Chart of Troubleshooting
14. DCS Receiver
RF input : CH center freq : +67.7kHz
RX ON
Amp : -50dBm
Yes
U205 Pin8
>= -65dBm
Yes
U205 pin1,pin2
>= -65dBm
Yes
U100
pin38 >= -70dBm
pin39 >= -70dBm
Yes
U100 pin6, 7, 8, 9
>= 1V
No
No
No
No
Resolder CN201, C202
Check U205
pin9, 10, 12 = L
Yes
Resolder L104, L105, L107
Resolder U100
or Check pins related to U100
No
Check ANT Switch
control circuit
Resoder U205
Yes
R116, R117, R118,
R119 >= 1V
Yes
Check U1102
END
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7-19
Page 20
15. DCS Transmitter
TX ON (5Level)
Yes
Flow Chart of Troubleshooting
U205 Pin8
>= 13dBm
No
U205 pin13
>= 13dBm
No
U201 pin17
>= 13dBm
No
U201 pin6
>= 15dBm
No
OSC401 pin5
>= 12dBm
Yes
Yes
Yes
Yes
Yes
Resolder CN201, C202
Check U205
pin9, 10 = L,
pin12 = H (2.68V)
No
Resolder C1127
Check U201
+VBATT, C212,
R207 OK?
No
Resolder R207
Yes
Change or Resolder U205
Check ANT Switch
control circuit
Yes
Resolder or Change U201
Check +VBATT or PAM
control signal
No
U100 pin 6, 7, 8, 9
>= 500mV
No
Check U1102
END
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Yes
Resolder U100
or Check pins related to U100
7-20
Page 21
Flow Chart of Troubleshooting
16. PCS Receiver
RF input : CH center freq : +67.7kHz
RX ON
Amp : -50dBm
Yes
U205 Pin8
>= -65dBm
Yes
U205 pin3,pin4
>= -65dBm
Yes
U100
pin35 >= -70dBm
pin36 >= -70dBm
Yes
U100 pin6, 7, 8, 9
>= 1V
No
No
No
No
Resolder CN201, C202
Check U205
pin10,12 = L, pin9 = L
Yes
Resolder L108, C151, C152
Resolder U100
or Check pins related to U100
No
Check ANT Switch
control circuit
Resoder U205
Yes
R116, R117, R118,
R119 >= 1V
Yes
Check U1102
END
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7-21
Page 22
17. PCS Transmitter
TX ON (5Level)
Yes
Flow Chart of Troubleshooting
U205 Pin8
>= 13dBm
No
U205 pin13
>= 13dBm
No
U201 pin17
>= 13dBm
No
U201 pin6
>= 15dBm
No
OSC401 pin5
>= 12dBm
Yes
Yes
Yes
Yes
Yes
Resolder CN201, C202
Check U205
pin9, 10 = L,
pin12 = H
No
Resolder C1127
Check U201
+VBATT, C212,
R207 OK?
No
Resolder R207
Yes
Change or Resolder U205
Check ANT Switch
control circuit
Yes
Resolder or Change U201
Check +VBATT or PAM
control signal
No
U100 pin 6, 7, 8, 9
>= 500mV
No
Check U1102
END
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Yes
Resolder U100
or Check pins related to U100
7-22
Page 23
Flow Chart of Troubleshooting
Transmitter
JT_ANT
1
ANT
C1129 NC
R1120 0
NC
C1128
1
G
2
A
CN201
3
KMS-510
C
4
G
C202
33PF
2.7PF
C1127
39PF
C203
4.7nH
L200
U205
LMG003W-5086A
47nH
L201
PCSRX_P PCSRX_N
3
PCS_RX1 PCS_RX2
8
4
ANT
VC1 VC2
10
VC1 VC2
DCSRX_P DCSRX_N
1
2
DCS_RX1 DCS_RX2
VC3
9
12
VC3
EGSMRX_P EGSMRX_N
5
6
G
EGSM_RX1 EGSM_RX2
G
G
G
DCS/PCS_TX
EGSM_TX
13
11
16
15
14
7
VC3
L809 33nH
100PF
C1130
10K
R1121
E2
C2
3
4
5
B1
B2
2
U207
PEMD10
E1
C1
6
1
ANT_SW2
VC3
VC2
VC1
L
H
LL
LL
Rx(PCS)
Rx(GSM/DCS)
L
HL
Tx(GSM)
L
LH
Tx(DCS/PCS)
R203
6.2K
RAMP
VBAT
C209
TXVCO_SW3
VCC_RX_TX
VC1
C222
470PF
19
14
16
18
12
15
13
17
GND
GND
GND GND
RSVD
VBAT T
20
VSENSE
GND
21
DCS/PCSOUT
U201
SKY77325
VCC1A
BS
ENABLE
3 8
4 5
82
R207 R204
11
GND
GSM850/900OUT
GN D
10
9
GN D
N
N
VCC1B
GSM850/900I
GND
DCS/PCSI
6
7
C205
220NF
C204
220NF
82
DCSTX
EGSMTX
VAPC
22
GND
23
GND
24
GND
25
GND
26
NC
1
2
10V
C212
100NF
6.3V
C211
100UF
C208
100NF
220NF
VC2
L807 33nH
FESW2
VC2
33nH L808
C216
100PF
10K
R209
C217
100PF
10K
R210
Antenna S/W Control Circuit
FESW1
7-23
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Page 24
VCC_RF_VCO
C103
Flow Chart of Troubleshooting
A
IRX_TX_N
QRX_TX_P
D_REF_13M
C137
QRX_TX_N
5.6K
100PF
5.6K
R117
R116
C131
U475
220PF
220PF
IRX_TX_P
PON_TX
5.6K
R119
5.6K
R118
U476
C149
220PF
220PF
REFGND
26MCLK
RF_EN_SYN
RF_BBI_CLK
RF_BBI_DAT
100PF
C101
1K
R125
C129
47NF
33NF
C127
12
13
11
GND1
CLKOUT
CLKFDBX
CAFCSUP
41
IFVC
C
0
QB
9
QA
IB
71
IA
6
TXO
N
5
TXCPVC
C
TXCPO
34
EXTRES
2
TXRFI
18
B
NC1
NC2
GND2
GND3
GND4
DCSI
FESWON
44
45
46
39
40
42
43
PON_RX
PON_SYN
VCC_SYN
F
C148
100P
C147
100NF
C150
100NF
100PF
3.6K
R121
R126
2.2K
C118
1.8NF
FESW
1
FESW
2
VCC_CP
C125
100NF
C124
8.2PF
X7R
C120
(1005)
560PF
6.8NF
C121
FILM
(2012)
C119
FILM
390PF
(2012)
RFCPO
21
SYNVCC
22
RXO
N
23
SYNON
24
25
RFTUNE
26
27
C
28
FESW
1
29
FESW
2
30
A
RFVCC
GSMI
31
32
20
RFCPVCC
RFVCOVCC
GNDTUNE
RFLOVC
19
EN
B
GSMI
33
7PF
C112
15
16
17
18
CLK
DATA
REFVCC
U100
B
RFGND134RFGND2
PCSIAPCSI
37
36
35
14
N
REFI
UAA3536HN/C3
A
DCSI
38
AFC
R107
220K
R106
220K
10K
R108
C132
100PF
1
VCC
VCON
2
34
GND
OUT
U101
TCO-5871U-26M
%
R105
22K,1
L102
1.2NH
EGSMRX_N
C136
8.2PF
47
R122
C135
C123
VCC_RX_TX
8.2PF
C122
100NF
ANT_EN
VCC_CP
VCC_TX_BURST
C134
C133
1.2NH
EGSMRX_P
L108
6.2nH
C151
3.3PF
3.3PF
C152
PCSRX_P
PCSRX_N
MURATA
L101
47nH
L100
L105
15nH
27PF
L107
L104
27PF
DCSRX_P
DCSRX_N
1UF
C138
100NF
68PF
X7R
C102
(1005)
VCC_SYN
1NF
OSC401
1UF
91
R110
120
R112
MQW510C869M
VB
1
8
VB
2
12
200
R114
10
OUT15OUT2
DCSTX
22NF
C142
R104
130
20PF
C104
14
G
G
VC
13
DUAL_TXVCO
G
11
G
9
7
6
GG
G
3
SW2
4
SW1
2
1
C146
C144
27PF
27PF
EGSMTX
TXVCO_SW1
TXVCO_SW2
7-24
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