Samsung SGH-E720 Service Manual page 5

SGH-E720 Flow Chart of Troubleshooting
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P4
SIMCLK
T2 SIMIO
P5 PIO14_SIMRST
B19
PIO07_USB_SUSP
C19 PIO09_USB_VPI
C18
PIO11_USB_VMI
D17 PIO12_USB_VPO
E16 PIO13_USB_VMO
F16 PIO36_USB_OEN
E17 PIO37_USB_DATA
R3
SPCLK0
R4 SPRXD0
U2 SPTXD0_I2SD
T3 SPFS0
P3
RIO_PIO01
P2 DSR0_PIO02
N4 DTR0_PIO03
N2 RTS0_PIO04
M3
TX0
M1 RX0_IRQ28
M6 CTS0_PIO29
N5 DCD0_PIO44
R16 PIO41_IRDATX
R17
PIO42_IRDARX
K7 TX1
L6 RX1_IRQ28
J7 KEYBRD0
J6
KEYBRD1
J5
KEYBRD2
J4
KEYBRD3
J8 KEYBRD4
H6
KEYBRD5
H4 KEYBRD6
H1
KEYBRD7
H3
KEYBRD8
G6 KEYBRD9
G4
KEYBRD10
H2
KEYBRD11_PSW1_BUF
J15
PIO38_MCI_CLK
J13
PIO08_MCI_CMD
K13 PIO21_MCI_DAT0
L12
PIO22_MCI_DAT1
L13 PIO23_MCI_DAT2
L15 PIO24_MCI_DAT3
L14 PIO39_MCI_CMD_EN
M14
PIO40_MCI_DAT_EN
N14
PIO43_MCI_DAT0_EN
H19
X1RTC
F19
X2RTC
H17
RTCALARMN
G16 OSC32OUT
P15 PIO19_PWRKEEP
P19
PIO20_SYSCLKREQ
G5
PWM1_PIO46
V17
PIO10
V19 PIO25
U16 PIO26
U19
PIO27
W17
PIO28
R13
PIO32
F200
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2-2
2
NC2
NC1 1
VSSA_U F18
F17
VDDA_U
R11
VSSA_D
T11
VDDA_D
M12
VSS18
VSS17 M11
VSS16 M10
M9
VSS15
M8
VSS14
VSS13 L8
L7
VSS12
VSS11 K8
VSS10 J12
VSS9 H12
H11
VSS8
VSS7 H10
H9
VSS6
VSS5 H8
VSS4 G9
VSS3 G8
VSS2 A18
A2
VSS1
VDD_CORE8 V13
VDD_CORE7 V7
VDD_CORE6 N18
VDD_CORE5 M2
H18
VDD_CORE4
VDD_CORE3 G2
VDD_CORE2 B13
B8
VDD_CORE1
W18
VDD_IO_1P8_18
W8
VDD_IO_1P8_17
U12
VDD_IO_1P8_16
VDD_IO_1P8_15 U5
VDD_IO_1P8_14 U1
T18
VDD_IO_1P8_13
P1
VDD_IO_1P8_12
VDD_IO_1P8_11 L16
VDD_IO_1P8_10 L4
VDD_IO_1P8_9 F1
VDD_IO_1P8_8 D18
D9
VDD_IO_1P8_7
C14
VDD_IO_1P8_6
C1
VDD_IO_1P8_5
B16
VDD_IO_1P8_4
VDD_IO_1P8_3 B12
VDD_IO_1P8_2 B6
VDD_IO_1P8_1 B4
VRTC G18
W12
CKI
RESTN G15
W14
TMS
TRSTN R12