Samsung SGH-B2100, GT-B2100 Troubleshooting
10. Flow Chart of Troubleshooting
10-1.
Power On
OWER ON' does not work
'P
Yes
Check battery voltage
is higher than
Check VCC_SYN_2.8V
and VDD3_1.8V of U101
Check the pin1of
OSC100 produces clock
signal
3.3V
OK
OK
Not OK
NotOK
Not OK
Change battery
older PMIC, U101, C127 again
S
older OSC100 again
S
OK
Check the pin7of U101
produces
Is Power On working?
26M
END
pulse signal
OK
Yes
Not OK
No
older OSC100, U101 and C127 again
S
Repeat sequence
10-1
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Flow Chart of Troubleshooting
S
Power On
REF_ON_PMU
RF_RESET
C124
RF_CLK
RF_EN
RF_DATA
R102
OSC100
3
4
4
2
XMODE
N
5
2
A
I
F
XDIV
R
6
2
AFC
7
2
VDD
8
2
C125
1
T
D
O
N
2
H
G
2
T
D
O
N
1
H
G
9
2
0
3
1
3
2
3
GND
3
3
4
3
5
3
VDD
XTAL2
XTAL1
XEN
NC
NC
K
L
C
C
S
N
6
1
3
0
2
3
2
P
A
I
F
R
N
E
S
_
2
9
1
2
2
N
P
E
E
I
I
F
F
R
R
U101
O
N
I
Q
D
S
B
3
4
7
8
2
1
1
1
P
N
P
N
P
I
D
D
I
I
P
I
F
F
F
F
R
R
R
R
RFOH
6
1
RFOL
5
1
GND
4
1
VDD
3
1
VDD
2
1
VIO
1
1
0
_RESET
1
_PDN
T
P
N
Q
I
B
B
6
5
9
U
P
I
O
X
B
8
7
R101
R103
C127
DCS_TX
EGSM_TX
VDD_RX_TX_2.8V
VDD_IO_LOW_1.8V
RF_RESET
PON_3587_SYNTH
C126
D_REF_CLK
BT_CLK
RX_TX_IP
RX_TX_IN
RX_TX_QP
RX_TX_QN
0
0
1
C
S
L
L
1
1
U407
1
0
2
F
0
0
4
5
C
C
L
L
1
1
1
1
1
1
2
2
2
0
2
3
L111
L113
1
F
0
1
C
C
L
L
1
1
1
1
0
0
2
2
7
9
0
1
RFS100
L106
L108
C
1
0
1
C125
0
0
1
C
S
O
2
R101
1
R103
0
1
C126
U
C124
C127
R102
C115
1
0
C
S
C
C
C
1
1
1
0
0
0
0
3
4
L
4
0
9
C432
C425
ZD403ZD404
L
4
1
2
L
4
1
3
C435
L
4
1
0
C
3
1
7
10-2
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Flow Chart of Troubleshooting
10-2.
Initial
Initial Failure
Yes
Check VDD1, VDD3=1.8V,
VDD2=2.9V and AVDD=2.6V
of U200
OK
Check D_REF_13M of
U200
OK
END
Not OK
Not OK
VBAT
Check PMU300
Check U101 and POWER ON Sequence
MES_BATT
VDD_IO_HIGH_2.9V
AVDD_2.6V
VDD_CAM_1.5V
VDD_USB_3.3V
VDD_PLL_1.2V
IT_PMU
SIMOFFn
RSTON
REF_ON_PMU
32KHz_DIGIT
R300
R306
C301
C300
VDD_IO_LOW_1.8V
VDD_SD_3.3V
C302
C303
VDD_SIM_3.0V
C306
C304
VDD_RX_TX_2.8V
C307
C308
VCC_SYN_2.8V
C309
C310
C312
C313
OSC300
4
3
2
1
C316
TP_IT_PMU
R309
V_CORE_CTL
1
2
3
4
5
6
7
8
9
10
11
12
13
57
OSCI
OSCO
_IRQ
SIMCKHC
_SIMRSHC
SIMIOHC|_SIMOFF
_RSTHC
GPO3
GPO2
GPO1
PWREN1
PWREN2
VSS
VSS
0
1
9
2
8
6
5
5
5
5
5
5
T
D
C
D
C
D
A
D
N
D
N
D
B
V
V
V
1
V
C
C
1
D
L
L
D
5
7
6
5
8
9
4
4
4
5
4
4
T
T
D
D
D
D
A
A
D
D
D
D
B
B
V
V
V
V
2
3
V
V
P
O
I
D
L
D
PMU300
T
T
D
A
D
A
K
X
D
D
D
2
L
3
D
D
D
D
K
V
V
V
L
5
C
4
6
C
D
D
D
D
4
5
7
6
8
1
1
1
1
1
C
D
B
B
K
V
V
V
C
D
D
D
L
A
M
C
C
C
I
D
C
S
D
D
S
S
D
0
2
3
3
9
1
2
2
2
1
2
5
0
2
1
4
3
4
4
4
4
4
E
C
D
D
D
V
C
D
D
D
A
V
V
V
V
C
M
I
H
S
D
C
O
I
M
I
S
4
2
39
1
2
S
F
F
VSS
V
R
R
38
VCHG
37
USBVIN
36
CHGCUR
35
_REC2
34
_REC1
33
VBATSENSE
32
VISA
31
REFGND
30
REFC
29
MICBIAS
28
_ONKEY
D
C
27
S
NTC
N
N
R
E
E
M
I
M
M
I
I
S
S
_
S
5
6
4
2
2
5
R307
C320
C321
VDD_IO_LOW_1.8V
C314
JACK_IN
AUX_ON
R310
MIC_BIAS_2.15V
V_EXT_CHARGE
VBUS_5V
C315
VBAT
C319
ONKEY_N
C330
SCL
SDA
VDD_MAIN_KEY_3.3V
10-3
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Flow Chart of Troubleshooting
2
C
1
C
C
5
5
R
R
C
3
3
U300
1
C
3
3
2
TP402
TP401
C447
L411
R
2
0
7
T
P
_
H
S
Y
N
C
R
2
0
6
C450
R104
D
3
0
0
1
9
0
0
3
U
M
P
3
1
0
OSC300
3
3
2
2
0
C508
1
C322
L
3
0
1
C
3
2
5
C323
C
3
2
4
C
3
2
8
L504
L505
L507
L506
D509
5
C308
0
1
7
4
3
3
C304
1
0
5
F
C303
C300
2
0
C302
5
F
C306
3
0
5
F
C307
C309
C312
U
M
P
P
_
_
T
I
T
C
C
3
3
1
1
3
6
BTC300
TP_HD[200
C
3
2
6
R
3
1
3
C210
R
R
2
2
0
0
1
0
V
R
R
3
3
1
0
2
0
R
3
1
4
R315
R
3
0
0
R213
C201
C
3
0
1
C203
C206
R
3
0
6
C416
TA400
C407
C408
C421
C415
R402
R401
C
4
C
0
1
0
4
U
C
4
0
2
V
K
5
0
0
C
C
4
4
10-4
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Flow Chart of Troubleshooting
0
3
4
10-3. S
IM Part
Insert SIM" is displayed on the LCD
"
The voltage is
at the pin#1 SIM3
Is there any signal pin
of SIM3
#2,3,4
Check the SIM Card
END
3.0V
Yes
00?
Yes
00
No
Check U200,C304
No
1
0
3
C
S
P
A
M
1
0
0
L
L
1
1
U407
0
0
5
4
L
L
L
1
1
1
1
0
1
0
9
2
L111
13
C108
L102
C
1
0
9
1
0
F
1
C
C
L
1
1
1
0
2
2
7
1
0
L106
L108
Check U200, PMU300
C
1
C102
0
6
L100
S
C
1
0
1
RFS100
R
3
0
8
C
3
1
8
0
0
I
3
S
M
SIMRST
R101
1
R103
0
1
VDD_SIM_3.0V
C317
SIM300
1 1
22
3 3 4
7
7
8 8
99
G
U
1
0
2
C
S
6
5
11 11
G
C126
C124
C127
R102
C115
C
C
C
1
1
1
0
0
0
6
5
4
1212
1010
R308
C318
L
4
0
9
C425
ZD403ZD404
1314GG1516
10-5
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C
3
1
L
4
1
0
C432
C435
L
L
4
4
1
1
2
3
7
SIMIOSIMCLK
Flow Chart of Troubleshooting
10-4.
Microphone Part-Phone MIC
Phone MIC does not work
Yes
Check the connection
of MIC
OK
Check MIC_BIAS_2.15V
When U200 operates
(
and call is connected
Check thecomponents
which are connected to
MIC_BIAS_2.15V
)
OK
Not OK
Not OK
Not OK
older MIC again
S
older C330 again and check PMU300
S
Solder TA401, R404, R405 again
OK
Check the circuit
of MIC PART
OK
Is Phone MIC working?
Yes
END
Not OK
No
older C427,C434,L409, L410 again
S
Replace MIC
10-6
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AUX_MICIN_P
DIGIT7
DIGIT8
DIGIT9
C116
C
C
C
C
L
Flow Chart of Troubleshooting
C412
C414
AUX_MIC_P
MIC401
L412
L413
ZD403
ZD404
Close to MIC
C425
C432
C435
AUX_MICIN_N
MIC_BIAS_2.15V
L409
L410
R404
R406
TA401
R405
R407
R403
C420
Close to Main Chip
C427
R408
C434
C419
AUX_MIC_N
C424
C426
MIC_P
C433
MIC_N
C436
RECEIVER
SPEAKER
C
Z
4
D
R510
D500
DIGIT0
1
0
4
C
I
M
R511
D503
SHARPSTAR
M
I
C
4
0
0
1
0
F
0
0
4
0
C
0
L400
4
0
Z
0
D
3
C
4
4
L401
0
0
1
4
C
C
C
C
C
1
1
1
1
1
3
1
2
3
3
0
0
8
4
8
N
O
_
R
W
P
_
P
T
C114
U100
L405 L406L407 L408
1
0
0
D
X
R
T
X
D
1
0
0
1
0
0
S
T
C
RTS100
C136
L
1
C428C429 C430 C431
C509
C511
C512
D
5
1
C
2
1
D400 D401D402D403
L
4
1
4
C510
C514
C515
D
C
C
C
L
L
5
5
5
4
4
4
1
0
0
4
3
3
0
3
2
3
9
8
4
0
4
D
C
4
4
2
U
4
0
4
TP400
C
4
3
U405
TP500
7
0
0
5
H
C
R
R
R
O
4
4
T
1
1
1
0
10-7
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This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
10-5.
Microphone Part-Earphone MIC
Earphone MIC does not work
Yes
Check the connection
of IFC500
OK
Check JACK IN is low
when ear jack is inserted.
OK
Not OK
NotOK
older pin
S
older IFC500, L500, L501 again
S
of IFC500 again
3, 4
Check MIC_BIAS_2.15V
When U200 operates
(
and call is connected
Check the circuit
of EAR MIC
Is Earphone MIC working?
END
)
OK
OK
Yes
Not OK
Not OK
No
older C316 again and check PMU300
S
older L403, L404, C410, C418 and
S
C423 again
Repeat the sequence
10-8
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
C410
Flow Chart of Troubleshooting
IFC500
EARMIC_P
L403
AUX_MIC1_P
C418
EARMIC_N
L404
AUX_MIC1_N
C423
Close to IF Connector
VBAT
V_EXT_CHARGE
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
NC
22
NC
23
NC
24
NC
25
NC
26
NC
27
NC
C500
R502
R506
R507
1234 5 6
J
J
J
_
_
_
P
V
M
5
D
D
_
_
_
S
B
B
U
S
S
B
U
U
V
D505
L500
L501
C503
C502
C501
D507
D506
VDD_USB_3.3V
R501
R508
FM_RADIO_ANT
EARMIC_P
EARMIC_N
EARSPK_R
EARSPK_L
EAR_SWITCH
1
USB_DP
USB_DM
VBUS_5V
J
J
J
_
_
_
1
1
N
D
D
O
X
X
_
T
R
X
U
A
2
3
4
VDD_IO_HIGH_2.9V
R503
F500
5
OUT1
IN1
IN2
IN3
IN4
6
OUT2
7
OUT3
8
OUT4
GND
GND
910
TP500
JACK_IN
TXD1
RXD1
AUX_ON
10-9
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Flow Chart of Troubleshooting
C
C
D
3
0
0
0
449
C500
R
5
0
6
I
F
C
5
0
0
C411
L
4
C413
0
2
0
0
5
F
C
R
5
5
0
0
1
2
D
C423
5
0
7
C
4
D
1
5
8
0
6
C410
L417
U402
R
R205
4
0
0
R204
R507
L404
L403
C405
C409
C422
C329
R
R
R
C
2
2
3
0
0
2
0
1
6
V
R
R
R
3
3
3
1
1
0
2
3
BTC300
R
R
5
5
0
0
5
0
5
D
1
3
R508
L501
C
L
5
5
0
0
0
2
C
5
0
3
L
4
1
5
TP_CS201
L
4
1
6
TP_OE
TP_HD[200
2
E
0
0
M
U
0
0
2
E
TP_EXT
B
_
P
T
0
C210
C213
C214
TP_WAIT
TP_WAITn
TP_BURST
0
0
2
S
C
_
P
T
R210
C215
R
3
0
9
R
R
C
3
3
3
0
0
0
1
2
5
R
3
1
4
R315
C
R
3
3
3
0
0
0
0
1
6
C408
C421
C203
L201
C209
C202
C206
C415
R402
R401
C
4
C416
C
0
2
1
0
5
C417
R
C216
2
0
9
C204
R213
C201
U200
W
E
_
P
T
C208
C507
R
3
0
5
R211
R
R
3
3
0
0
3
4
C
4
0
2
TA400
V
C
4
5
2
R412
K
5
0
0
4
U
0
6
C
4
1
9
C
4
3
3
C412
C424
C436
C426
C
R
2
4
1
1
7
3
C
R
4
4
3
0
R
4
7
4
0
8
C
R
4
4
2
0
7
6
TA401
C330
C
R
4
4
1
0
4
4
R
4
0
C
R
3
4
4
2
0
0
5
U
4
0
0
1
0
4
U
C
C407
4
5
1
C406
C
2
0
0
C
C
R
2
2
2
1
1
0
9
7
2
10-10
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
10-6.
Earphone Part
Earphone does not work
Check the circuit
Check the voltages of
Check the circuit
R401, R402 and U401
of IFC500
R503 are
Yes
OK
2.9V
OK
Not OK
Not OK
Not OK
older pin
S
L500, L501 again
,
older R503 again
S
older R401 and R402 again
S
5,6,7
of IFC500
OK
Is JACK_INT signal LOW?
When U200 operate
(
Check EAR SW
s)
Yes
Ok
No
Not OK
No
Check U200 or Change U200
older Jack_IN again
S
Solder R502 again
END
10-11
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This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
IFC500
VBAT
V_EXT_CHARGE
VDD_USB_3.3V
R501
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
NC
22
NC
23
NC
24
NC
25
NC
26
NC
27
NC
C500
R502
R506
R507
1234 5 6
J
J
J
_
_
_
P
V
M
5
D
D
_
_
_
S
B
B
U
S
S
B
U
U
V
D505
D506
D507
L500
L501
C501
C502
C503
R508
FM_RADIO_ANT
EARMIC_P
EARMIC_N
EARSPK_R
EARSPK_L
EAR_SWITCH
1
USB_DP
USB_DM
VBUS_5V
J
J
J
_
_
_
1
1
N
D
D
O
X
X
_
T
R
X
U
A
2
3
4
VDD_IO_HIGH_2.9V
R503
F500
GND
GND
OUT1
OUT2
OUT3
OUT4
910
5
6
7
8
TP500
JACK_IN
TXD1
RXD1
AUX_ON
IN1
IN2
IN3
IN4
VBAT
EARSPK_R
EARSPK_L
HFR1
HFR2
EAR1
EAR2
C416
C417
C406
R401
R402
C451
C452
C407
TA400
C408
RXIN+
RXIN-
OUT+
OUT-
BIAS
C
N
C402
B4
D4
B5
D5
B2
B3
SDA
C3
SCL
SPK_P
SPK_N
SDA
SCL
C415
C401
1
5
B
C
D
D
D
D
V
HPR
HPL
C1P
C1N
INA1
INA2
INB1
INB2
V
P
U401
D
D
N
S
N
C
S
G
V
G
N
P
3
3
4
1
2
A
D
C
A1
A2
A5
A4
D2
D1
C2
C1
C421
10-12
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Flow Chart of Troubleshooting
C
D
3
0
0
0
C449
C500
R
5
0
6
R
5
0
2
L417
0
0
5
F
C
5
0
1
D
C423
5
0
7
C
4
D
1
5
8
0
6
C410
I
F
C
5
0
0
C411
L
4
C413
0
2
U402
R
R205
4
0
0
R204
R507
L404
L403
C405
C409
C422
C329
C
R
R
3
2
2
2
0
0
6
0
1
V
R
R
R
3
3
3
1
1
0
3
2
TP_WAIT
TP_WAITn
TP_BURST
C210
R
3
0
9
C
3
0
5
R
3
0
2
0
C213
C214
0
0
2
S
C
_
P
T
R210
C215
R
3
0
1
BTC300
R
R
5
5
0
0
5
5
D
0
3
1
R508
L501
C
L
5
5
0
0
0
2
C
5
0
3
L
4
1
5
TP_CS201
L
4
1
6
TP_OE
TP_HD[200
2
E
0
0
M
U
0
0
2
E
TP_EXT
B
_
P
T
R
3
1
4
R315
C
R
R
3
3
3
0
0
0
1
6
0
C408
C421
C203
L201
C209
C202
C206
C415
R402
R401
C
4
C416
C
0
2
1
0
5
C417
R
C216
2
0
9
C204
R213
C201
U200
W
E
_
P
T
C208
C507
R
3
0
5
R211
R
R
3
3
0
0
4
3
C
4
0
2
TA400
V
R412
K
5
0
0
C
4
5
2
4
U
0
6
C
4
1
9
C436
C
4
3
3
C426
C412
C424
C
R
2
4
1
1
7
3
R
C
4
4
0
3
R
7
4
4
0
8
R
C
4
4
0
2
6
7
TA401
C330
R
C
4
4
0
1
4
4
R
4
0
C
R
3
4
4
2
0
0
5
U
4
0
0
1
0
4
U
C
C407
4
5
1
C406
C
2
0
0
C
R
C
2
2
2
1
0
1
7
2
9
10-13
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
10-7.
Charging Part
Abnormal charging operation
Check DC jack
Check the38Pin and
pin of PMU300
Yes
OK
OK
39
Not OK
Cheak the PMU300
Not OK
Replace the PMU300
Check C315
OK
Check OSC300
OK
END
Not OK
NotOK
Replace the C315
Solder OSC300 again or change
battery
a
10-14
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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