Samsung SGH-D520 Service Manual page 38

C217
A(0:24)
A(0)
B7 A_A0
A(1)
C8 A_A1
A(2)
D8 A_A2
A(3)
A6
A_A3
A(4)
C6
A_A4
A(5)
C5 A_A5
A(6)
D7 A_A6
A(7)
E7
A_A7
A(8)
C4 A_A8
A(9)
C2 A_A9
A(10)
A3 A_A10
A(11)
B3 A_A11
A(12)
B1 A_A12
A(13)
D6
A_A13
A(14)
D5
A_A14
A(15)
D3 A_A15
A(16)
E8 A_A16
A(17)
F8 A_A17
A(18)
E6
A_A18
A(19)
D2 A_A19
A(20)
E4 A_A20
A(21)
E3 A_A21
A(22)
F5
A_A22
A(23)
F4
A_A23
A(24)
F3 A_A24
D(0:15)
F2 PIO35_A_A25_BOOTSEL
D(0)
A8 A_D0
D(1)
E9 A_D1
D(2) F9 A_D2
D(3) G10 A_D3
D(4) G11 A_D4
D(5)
F11 A_D5
D(6) E11
A_D6
D(7) G12
A_D7
D(8) D11 A_D8
D(9)
E12 A_D9
D(10) C12 A_D10
D(11) A12
A_D11
D(12) F12 A_D12
D(13) D12 A_D13
D(14) E13 A_D14
D(15) D13
A_D15
D14
A_WEN
CP_WEN
B14 A_OEN
CP_OEN
E14 PIO30_WAITN
H14
FLASHRSTN
FLASH_RESET
A14 A_CS0N
ROM1_CS
C15 A_CS1N
G14 A_CS2N
ONENAND_CS
J14 A_CS3N
D15 A_CS4N
RAM_CS
C16
A_CS5N
F15
LCDC_CS A_CS6N
B17 A_CS7N
YMU_CS
H16
A_BE0N
LOWER_BYTE
A17
A_BE1N
UPPER_BYTE
SIMCLK
SIMDATA
SIMRST
USB_SUSP
USB_DET
USB_VPO
USB_VMO
USB_OEN
USB_DATA
UP_SCLK
UP_SDO
UP_SDI
UP_CS
BT_CTS
BT_RXD
BT_TXD
BT_RTS
HOST_WAKE
SDS_TXD
SDS_RXD
KEY_COL(0:4)
PSW1_BUF
KEY_ROW(0:5)
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HP_CORE_1.57V VLDO1_1.5V
HP_CORE_1.57V
R210 R209
C200 C201 C202 C203 C204
C218
UCP200
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_ROW(5)
9-5
Flow Chart of Troubleshooting
VCCD_1.8V VRTC_1.5V
C205 C206 C207 C208
TP213
TDO T12
TDI V14
U14
TCK
N12
CKO_IACK
IOBIT1_PIO06 N11
IOBIT0_PIO05 V12
N15
SPFS1_PIO15
SPTXD1_I2SD_PIO16 N16
SPRXD1_PIO17 M17
SPCLK1_PIO18 M18
INT0 T15
IO W6
V6
RWN
P11
D_D15 DSP_DB(15)
D_D14 N10
DSP_DB(14)
D_D13 N9 DSP_DB(13)
D_D12 N8
DSP_DB(12)
P9
D_D11 DSP_DB(11)
D_D10 P8
DSP_DB(10)
D_D9 R9
DSP_DB(9)
D_D8 T9
DSP_DB(8)
T8
D_D7 DSP_DB(7)
U8
D_D6 DSP_DB(6)
D_D5 V8
DSP_DB(5)
D_D4 R8
DSP_DB(4)
D_D3 T7
DSP_DB(3)
D_D2 R7
DSP_DB(2)
D_D1 T6
DSP_DB(1)
D_D0 U6
DSP_DB(0)
D_A8 R6 DSP_AB(8)
DSP_AB(7)
D_A7 N6
V4 DSP_AB(6)
D_A6
T5 DSP_AB(5)
D_A5
D_A4 U4 DSP_AB(4)
D_A3 V3 DSP_AB(3)
DSP_AB(2)
D_A2 W3
W2 DSP_AB(1)
D_A1
D_A0 V1 DSP_AB(0)
TEST3 V16
TEST2 T14
U15
TEST1
CPTSTSTOP_CKO T17
ATDO_PWM2 T13 CP_TDO
TP209
ATDI_RTS1 L5 CP_TDI
TP210
ATCK_CTS1 M4
CP_TCK
TP211
ATMS_PIO45 K12 CP_TMS
TP212
PIO31_IRQ6 P12
PIO00_IRQ5 P16
IRQ4
P18
IRQ3 P17
IRQ2 M19
IRQ1 M16
PIO47
J16
R14
PIO34
U18
PIO33
CHG_OFF
EAR_SWITCH
CHG_DET
EAR_SEL
AMP_EN
BT_WAKE
BRIGHTNESS
XOENAQ
PWR_KEEP
CLK32K
RTCALARM
OSC200
C210 C209
CLK13M_TR
TR_RST
DSP_TMS
DSP_TDO
DSP_TDI
DSP_TCK
FLASH_EN1
SPK_SEL
PCM_SYNC
PCM_IN
PCM_OUT
PCM_CLK
DSP_INT
DSP_IO DSP_DB(0:15)
DSP_RWN
DSP_AB(0:8)
NAND_INT
R204
HALL_SENSOR
LCDC_INT
YMU_IRQ
JACK_IN
INTRQ
M_HOLD
USB_CON
LED_DATA