Samsung SGH-B100 Service Manual page 45

Flow Chart of Troubleshooting
VCCD_2.9V
37
D(1) D1
38
D(0) D0|AURXD
39
CP_WEN _WR|AUTXD
40
YMU_EN _CS|AUSTB
41
A(1) A0
42
CP_OEN _RD|AUCLK
43
IFSEL
U400
44
NC
HPOUT-R
45
SDATA
HPOUT-L
46
VDDIO
47
SCLK
C405
48
LRCK
49
GND
50 NC
51
NC
CLK13M_MXIC
VIB_EN
MXIC_IRQ
MEM_RST
C412
VCCD_1.8V
C413
C414 C415
VBAT
R412
U401
1 10
V+ NO2
2 NO1 COM2 9
MAIN_N
3 COM1 IN2 8
SPK_N
4 IN1 7
NC2
5 NC1 6
GND
AOUTAN
GND
R418
11
C421
R419
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VCCD_2.9V
VBAT
DSP_DB(0:15)
24
SGND
23
SVDD
22
EQ3
21 C401
R401
EQ2
C402 C403
20
EQ1
C400 R400
19
AVDD
DSP_AB(0:8)
18
C404
17
16
AGND
C406 C407
15
AUX1
14
C408
AUX2
13
VINP AOUTBP
DSP_IO
C411
DSP_RWN
FLASH_RESET
AOUTBN
VMOD_EN
VCCD_2.9V
TX_EN
SERLE
SERDAT
SERCLK
C416
MAIN_P
R406
SPK_P MICOUTP
R408
MICINP
AOUTAP
R417
R409
MICINN
AS1
MICOUTN
R411
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VCCD_2.9V VCCA_2.9V
C300 C302
DSP_DB(15)
D2 DB15
DSP_DB(14)
D3 DB14
DSP_DB(13)
E3 DB13
DSP_DB(12)
E2 DB12
DSP_DB(11)
F3 DB11
DSP_DB(10)
F2
DB10
DSP_DB(9)
F1 DB9
DSP_DB(8)
F4 DB8
DSP_DB(7)
G4 DB7
DSP_DB(6)
G3
DB6
DSP_DB(5)
H5
DB5
DSP_DB(4)
J6 DB4
DSP_DB(3)
J5 DB3
DSP_DB(2)
K3 DB2
DSP_DB(1) K2
DB1
DSP_DB(0)
K1
DB0
DSP_AB(8)
K5
AB8
DSP_AB(7)
K7 AB7
UCP300
DSP_AB(6)
M1 AB6
DSP_AB(5) M2
AB5
DSP_AB(4) N2
AB4
DSP_AB(3) N1
AB3
DSP_AB(2)
L5
AB2
DSP_AB(1)
P1 AB1
DSP_AB(0)
K6 AB0
DSP_IO L3 I|O
L2 RWN
R3
RESETN_CSP
E6 NC4
C5 OCTL1
F5 OCTL2
E5
NC
A4
OCTL4
G6 OCTL5
B3
OCTL6
A3 OCTL7
B1
SERLE1
A2
SERLE2
C1
SERDA
C2
SERCK
VCCA_2.9V
C321
R405
C320
TA400
R407
R420
C417
MIC400
R421
C418
R410
C419 C420
10-14
VCCD_2.9V
VBAT
C301
C308
C11
VDD34
J13
VDD12
N9
UP_CLK SIMCLK
R10
UP_RST SIMRST
P10
UP_IO SIMDATA
J11
SIM_IO SIM_IO
K11
SIM_RST
SIM_RST
K14
SIM_CLK SIM_CLK
K12
VSIM VSIM
H11
VRTC
G12
LED2_DRV
VCCB_2.9V VCCA_2.9V
G13 VCCD_2.9V
LED1_DRV
KEY_BL1
F13
RING_DRV VRF_2.9V
F15
VIB_DRV VIB_DRV
C12
VLDO_7
A14
VLDO_6
VL5S_B C9
VL5S_A D10
C309
B10
VLDO_5
B11
VL4S_B
A12
VL4S_A BAND_SEL
B12
VLDO_4
VLDO_3 A13
J12
VLDO_2
G11
VLDO_1
F14
VACC
CSN_PSC K8
UP_CS
L8
SCLK_PSC UP_SCLK C312 C313 C314 C315
N7
SDO_PSC VBAT
UP_SDO
SDI_PSC M7
UP_SDI
E14
VEXT
E13
VBAT
E11
CH_BDRV
F12
CH_ISEN
D14
CH_RES
D15
NC3
E10
NC9
A10
VREF
VREF
CREF E9
H10
RTC_ALMN RTCALARM
C319
VIB_EN
INTRQ
INTRQ
PWR_KEEP
PWR_KEEP
RST
KEY_COL(2)
3
1
TR300
2
KEY_ROW(0)
VRTC_3V
VCCD_1.8V
C316 C317 C318