10-GT-B5702-TSHOO-6, Service Manual do Tel.komórkowych, Samsung - Service Manual, Samsung SGH-B5702
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10. Flow Chart of Troubleshooting
10-1.Baseband
10-1-1. Power ON
'Power On' does not work
Check the current consumption
Yes
Current consumption
>= 100mA
No
Download again
Yes
Check the Vbat Voltage
Voltage >=3.4V
No
Charge the Battery
Yes
Check the pin of U300
No
Check U300
C329
C329(VISA)= 2.5V?
Yes
No
L1(VDD_GSM_CORE)
=1.2V?
Check U300
C343
Yes
Yes
Check the clock signal at OSC of MAX8699
Check the clock
Freq = 32.768kHz
No
Check the clock generation circuit
(relatedtoOSC300, C331, C334)
Yes
Check the initial operation
END
10-1
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This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
+VDD_MAINKEY_3.3V
+VDD_SD_3.3V
C300
C301
+AVDD_HFA_2.6V
+VDD_IO_LOW_1.8V
C353
C303
+VDD_SUBKEY_LED_3.3V
+VDD_PLL_1.2V
C311
C310
+VDD_SLEEP_2.9V
+AVDD_2.6V
C313
C312
+VDD_IO_HIGH_2.9V
+VCC_SYN_2.8V
C315
C314
+VDD_USB_3.3V
+VDD_RX_TX_2.8V
C316
C317
VBAT
R303
AUX_ON
MES_BATT
JACK_IN
R304
C356
C319
R307
MIC_BIAS_2.15V
R310
EARSPK_R
EARSPK_L
M2
IN1
G3
R311
REC1B
C3
IN2
G7
B4
IN3
REC2B
R312
SIMOFFn
B10
M4
IN4
HPL
+SIMVCC_M
B8
L3
IN5
HPR
K6
IN6
C321
C355
V_EXT_CHARGE
K12
IN7
F2
L5
IN8
MICBIAS
M10
H10
IN9
RXINN
HFR_N
HFR_P
K10
RXINP
J5
INA1
J7
INB1
HFR_N
HFR_P
C322
C323
H6
INA2
H8
F4
SIMOFFB
C7
SIMVCC
C324
EAR2_M
EAR1_M
C325
B12
INB2
USBLDO
+VBUS_DETECT
C326
K8
D10
C327
C1N
U300
VL
L9
C1P
K4
C328
VBIAS
G1
C329
H12
OUTN
VISA
E3
SPK_N
VSAVE
L11
SPK_P
OUTP
CLK32K
H4
32KHz_DIGIT
BAT300
F12
CHGIN
F10
CHGINB
D4
TP_PMU_INT_M
C330
IRQB
PMU_INT_M
H2
E7
XIN
SCL
SCL
J1
XOUT
SDA
D6
SDA
L1
C331
LX
C9
PWREN1
J3
REF_ON_PMU
PWREN2
E5
PWREN2
FB
F8
C332
REFBP
F6
ONKEYB
ONKEY_N
G9
G5
TEST1
RESETB
RSTON
J9
TEST2
L301
OSC300
+VDD_GSM_CORE_1.2V
R314
C340
C341
C342
C339
C334
C333
C343
R315
PMU + DCDC + CHARGER
R223
C354
R307
OSC300
C321
L301
C334
C331
C338
C343
C313
C311
C315
C317
C322
C300
C355
C323
C333
C326
C332
C327
C335
R303
C342
C319
10-2
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This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
10-1-2.
Initial
Initial Failure
Yes
Is the RST Pin#G5(RSTON) of
U300 "Low
→
High" ?
No
Check the
U300
(if it has some problems, replace it.)
Yes
The Pin #E11,E9,D8(VBAT)
of U300 >= 3.4V
No
Check the
U300
(if it has some problems, replace it.)
Yes
There is 32.768kHz wave-
forms at the C331 and C334
of OSC300
No
Check the
U300
Yes
The voltage is "High" at the
C314, C303
No
Check the
U300
Yes
LCD display is O.K
No
Check the
LCD
part
Yes
Sound is O.K
No
Check the
AUDIO
part
Yes
END
10-3
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
+VDD_MAINKEY_3.3V
+VDD_SD_3.3V
C300
C301
+AVDD_HFA_2.6V
+VDD_IO_LOW_1.8V
C353
C303
+VDD_SUBKEY_LED_3.3V
+VDD_PLL_1.2V
C310
C311
+VDD_SLEEP_2.9V
+AVDD_2.6V
C313
C312
+VDD_IO_HIGH_2.9V
+VCC_SYN_2.8V
C315
C314
+VDD_USB_3.3V
+VDD_RX_TX_2.8V
C316
C317
VBAT
R303
AUX_ON
MES_BATT
JACK_IN
C356
R304
C319
R307
MIC_BIAS_2.15V
R310
R311
EARSPK_R
EARSPK_L
M2
IN1
G3
REC1B
C3
IN2
G7
REC2B
R312
B4
IN3
SIMOFFn
B10
IN4
M4
HPL
+SIMVCC_M
B8
IN5
L3
HPR
K6
IN6
C321
V_EXT_CHARGE
C355
K12
IN7
F2
MICBIAS
L5
IN8
M10
IN9
H10
RXINN
HFR_N
HFR_P
K10
RXINP
C322
J5
INA1
J7
INB1
HFR_N
HFR_P
C323
H6
INA2
H8
INB2
F4
SIMOFFB
C7
SIMVCC
C324
EAR2_M
EAR1_M
C325
USBLDO
B12
+VBUS_DETECT
C326
K8
C1N
D10
C327
U300
VL
L9
C1P
K4
C328
VBIAS
G1
C329
VISA
H12
OUTN
E3
SPK_N
VSAVE
L11
OUTP
SPK_P
H4
CLK32K
32KHz_DIGIT
BAT300
F12
CHGIN
F10
CHGINB
IRQB
D4
TP_PMU_INT_M
PMU_INT_M
C330
H2
XIN
E7
SCL
SCL
J1
XOUT
SDA
D6
SDA
L1
C331
LX
REF_ON_PMU
PWREN2
C9
PWREN1
J3
FB
E5
PWREN2
F8
C332
REFBP
F6
ONKEY_N
ONKEYB
G9
TEST1
G5
RESETB
RSTON
J9
TEST2
L301
OSC300
+VDD_GSM_CORE_1.2V
R314
C340
C341
C342
C334
C339
C333
C343
R315
PMU + DCDC + CHARGER
R223
C354
R307
OSC300
C321
L301
C334
C331
C338
C343
C313
C311
C315
C317
C322
C300
C355
C323
C333
C326
C332
C327
C335
R303
C342
C319
10-4
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This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
10-1-3.
Sim Part
(1)
MASTER
"Insert SIM is displayed on the LCD
Yes
No
SIM200 #1 = H ?
Resolder or change
UCP200
Yes
After Power On,
Check SIMCLK Signal On
#3 of SIM200 in a few
second
No
Check the clock
Yes
After SIM Card insert,
SIM200 #2 = "H"
No
Replace PBA
Yes
Check the SIM Card
END
+VDD_USB_3.3V
R200
C200
C216
SIMIO_M
SIM_IO_1
14
+SIMVCC_S
16
15
13
SIMIO_S
1
NCA
COMD
12
+SIM_VCC_1
2
NOD
11
SIM_SEL
+SIMVCC_M
A-B_IN
SIM200
3
10
SIMCLK_M
NOB
C-D_IN
4
9
SIM_CLK_1
COMB
NCC
SIMRST_S
5
7
8
6
SIM_RST_1
SIMCLK_S
SIMRST_M
U200
SIM SELECT
[MASTER]
C214
10-5
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This Document can not be used without Samsung's authorization
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