Samsung SGH-B300 Service Manual page 17

ANT
GSM_RX
GSM_TX
DCS_RX
DCS_TX
FM_RADIO
SPK
MAIN_MIC
EAR_SPK
EAR_MIC
POWER_ON
SIM
CHARGING
LCD
MOT
CLK
VCCD_2.9V
DSP_DB(0:15)
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_AB(0:8)
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
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
DSP_IO
L2
RWN
DSP_RWN
R3
RESETN_CSP
FLASH_RESET
E6 NC4
C5 OCTL1
BAND_SEL1
F5 OCTL2
BAND_SEL2
E5 NC
A4 OCTL4
FM_EN
G6
OCTL5
VMOD_EN
B3
OCTL6
A3
OCTL7
TX_EN
B1
SERLE1
A2
SERLE2
SERLE
C1 SERDA
SERDAT
C2 SERCK
SERCLK
C316
VCCD_1.8V
R201
A(22)
A(23)
D(0:15)
D(0) A6
XCP_D0
VCCD_1.8V
D(1) B5
XCP_D1
D(2) F8
XCP_D2
D(3)
F7
XCP_D3
D(4) C5
XCP_D4
D(5)
D6
XCP_D5
D(6)
E7
XCP_D6
D(7) D5
XCP_D7
D(8)
C4
C207
C208 XCP_D8
D(9) B4
XCP_D9
D(10) B3
XCP_D10
D(11) C1
XCP_D11
D(12) C2
XCP_D12
D(13) D2
XCP_D13
D(14)
D3
XCP_D14
D(15) E3
A(0:20) XCP_D15
VCCD_2.9V
A(0)
B13
XCP_A0_BEO N
A(1) F11
XCP_A1
A(2)
E14
XCP_A2
A(3) D15 XCP_A3
A(4) B15
XCP_A4
A(5)
C14
XCP_A5
A(6) A16
XCP_A6
A(7) A15
C209 C210
C211 XCP_A7
A(8)
B17
XCP_A8
A(9)
C17
XCP_A9
A(10)
D16
XCP_A1 0
A(11) F14
XCP_A1 1
A(12) G14
XCP_A1 2
A(13) G13
XCP_A1 3
A(14) G17
XCP_A1 4
A(15) J12
XCP_A1 5
A(16) K12
XCP_A1 6
A(17) K13
XCP_A1 7
A(18)
K14
XCP_A1 8
A(19)
L14
XCP_A1 9
A(20)
L15
XCP_A2 0
L16
A(21)
XCP_A2 1
A12
CP_CSROMEN
XCP_CSROME N
A13
CP_CSRAMEN
XCP_CSRAME N
M15
AMP_EN XPA0/CS1 N
R203 M14
LCD_CS XPA1/CS2 N
M11
EAR_CHECK XPA2/CS3 N
N14
YMU_EN XPA3/CS4 N
C13
CP_WEN XCP_WE N
P16
CP_OEN
XPA4/OE N
P15
MLCD_RST
XPA5/WAIT N
T15
UPPER_BYTE XPA6/BE1 N
M9
INTRQ XPA7/IRQ 1
R214 H T5
FM_INT XPA8/IRQ 2
P2
HALL_SW XPA9/IRQ 3
N2
YMU_IRQ XPA10/IRQ 4
C215
KEY_COL(0:4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
KEY_ROW(0:4)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
I2C_SCL
I2C_SDA
DEBUG_DTR
DEBUG_RTS
DEBUG_TXD
DEBUG_RXD
DEBUG_CTS
CHG_DET
SDS_TXD
SDS_RXD
SIMDATA
SIMCLK
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VCCA_2.9V VCCD_2.9V
VBAT
C300
C302 C301
C303
C319
VDD34 C11
VDD12 J13
UP_CLK N9
SIMCLK
UP_RST R10
SIMRST
UP_IO P10
SIMDATA
SIM_IO J11
SIM_IO
SIM_RST K11
SIM_RST
SIM_CLK K14
SIM_CLK
VSIM K12
VSIM
VRTC H11
LED2_DRV G12
LED1_DRV G13
KEY_BL1
RING_DRV F13
VIB_DRV F15
VIB_DRV
VLDO_7 C12
VLDO_6 A14
C9
VL5S_B
VL5S_A D10 C318
U300
VLDO_5 B10
VL4S_B B11
VL4S_A A12
VLDO_4 B12
VLDO_3 A13
VLDO_2 J12
VLDO_1 G11
VACC F14
K8
CSN_PSC UP_CS
SCLK_PSC L8
UP_SCLK
SDO_PSC N7
UP_SDO
M7
SDI_PSC UP_SDI
VEXT E14
VBAT E13
VBAT
CH_BDRV E11
CH_ISEN F12
D14
CH_RES
NC3 D15
NC9 E10
VREF A10
VREF
E9
CREF
RTC_ALMN H10
RTCALARM
VIB_EN
INTRQ
INTRQ
PWR_KEEP
RST
KEY_COL(2)
3
1 Q300
C317
2
KEY_ROW(4)
VCCD_1.8V
VCCD_2.9V
VCCD_1.8V
VCCD_2.9V
R200
C203 C204
UCP200
XCPTSTSTOP_CK O
XRTCALARM_ N
SAMSUNG Proprietary-Contents may change without notice
VCCD_2.9V
VCCA_2.9V
VRTC_3V
VRF_2.9V
VCCB_2.9V VCCD_1.8V
C308 C309
C 3 1 1 C312 C313 C314 C 3 1 0
C315
TP300
VRTC_3V
C206
C205
VREF
CLK13M_TR
TR_RST
F12
TDO
TRST F15
TR_RST
H12
TDI
G12
TMS
H13
TCK
R202
G15
CKO
L12
AS2
IOBIT# 2
K11
IOBIT# 1
N4
DSP_INT
INT#0
R12
IO7 DSP_IO
U5
RWN DSP_RWN
DSP_AB(8:0)
T17 DSP_AB(8)
AB#8
DSP_AB(7)
T14
AB#7
DSP_AB(6)
R14
AB#6
P12 DSP_AB(5)
AB#5
P11 DSP_AB(4)
AB#4
N11 DSP_AB(3)
AB#3
R13 DSP_AB(2)
AB#2
DSP_AB(1)
AB#1 M10
U13 DSP_AB(0)
AB#0 DSP_DB(15:0)
DSP_DB(15)
P10
DB#15
DSP_DB(14)
R11
DB#14
DSP_DB(13)
T11
DB#13
U11 DSP_DB(12)
DB#12
M8 DSP_DB(11)
DB#11
N8 DSP_DB(10)
DB#10
N7 DSP_DB(9)
DB#9
P7 DSP_DB(8)
DB#8
M6 DSP_DB(7)
DB#7
R7 DSP_DB(6)
DB#6
DSP_DB(5)
T7
DB#5
DSP_DB(4)
U7
DB#4
VBAT
DSP_DB(3)
DB#3 P6
DSP_DB(2)
R6
DB#2
U6 DSP_DB(1)
DB#1
P5 DSP_DB(0)
DB#0
D12
XTIC_MODE
R204
R205
M12
TH200
D11
ICHRG
XAG3
E11
XAG2
A11
XAG1
B11
XAG0
R206
B7
XBSWN
A7
X1RTC C212
D10 R207
X2RTC
E8
OSC200
C6 R208 C214
XOSC32OU T
1 2
C216 C217
3
TR_RST
RTCALARM
CLK_32K
CP_TDO
TR_RST
CP_TDI
CP_TMS
CP_TCK
DEBUG_DSR
EAR_SWITCH
AS1
JACK_IN
PWR_KEEP
SIMRST
LCD_DET
FLASH_RESET
LED_EN
CHG_OFF
UP_CS
UP_SCLK
UP_SDO
UP_SDI
10-5
Flow Chart of Troubleshooting
VCCB_2.9V
C213