Samsung GT-E1120 Service Manual page 21

Flow Chart of Troubleshooting
VCORE_1.25V VRF_2.85V VBG
C202 C203 C204
NEAR POWER DOMAIN SUPPLY
A(17:22)
MD(0:15)
EAR_N
EAR_P
VANA_2.85V
R208
1005
TH200
SHORT
SPK_N
SPK_P
R212
C216
R211
R208
C228
C231 C227
C205
C306
C302
C304
R308 C305
C219
C221
C327
C326
C325
D30 2 D303
MIC300
VBAT
VPERM_3.0V
VCORE_1.25V
VANA_2.85V
VBG
VBAT
VBAT
R222
NEG POS
1
2
BAT200
NC
A(23)
A(13)
* F-RDY/R-WAIT#
A(14) * AVD#
A(15) * CLK
A(17)
A(18)
A(19)
A(20)
A(21)
A(22)
MD(0)
MD(1)
MD(2)
MD(3)
MD(4)
MD(5)
MD(6)
MD(7)
MD(8)
MD(9)
MD(10)
MD(11)
MD(12)
MD(13)
MD(14)
MD(15)
KEY_LED_ON
FM_RST
TORCH_EN
LCD_DET
FM_SCL
FM_SDA
FM_INT
VIB_EN
D200
JIG_ON
D201
FM_L
FM_R
C227
MIC_BIAS
MIC_N
MIC_P
C228
EAR_MIC_N
EAR_MIC_P
C231
R211 1005
EAR_SW
EAR_SW_REF
KEYIN(0)
KEYIN(1)
KEYIN(2)
KEYIN(0:2)
KEYIO(0)
KEYIO(1)
KEYIO(2)
KEYOUT(0)
KEYIO(0:2)
KEYOUT(1)
KEYOUT(2)
KEYOUT(3)
KEYOUT(0:3)
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SC106
C202
C128
L201
C107 L103
R207
R100
R105
R210
C121
PAM102
C237
C120
R104
C114
C116
C112
C115
C111
C113
U306
R221 C236
C218 C220
SC103
L101
VPERM_3.0V
VRF_2.85V VPERM_3.0V VRF_2.85V
VCORE_1.25V VGPIO_2.8V VMEM_1.8V
VMEM_1.8V
VSIM_3.0V
C205
UCP200
1005
R220
SHORT
9-2
C129
L110
C105
L106
L100
VCORE_1.25V VSIM_3.0V VANA_2.85V VGPIO_2.8V VMEM_1.8V
VGPIO_2.8V
C237
C206 C207 C208 C209 C210 C211
NEAR VOLTAGE REGULATOR
LB
UB
NCS0
NCSFLASH
NCSRAM
VC1
PON_PA
MOD_STANDBY
VGPIO_2.8V
VANA_2.85V
VMEM_1.8V
VPERM_3.0V
VRF_2.85V
VSIM_3.0V
ONKEY_2
ONKEY_1
ICHGN
ICHGP
DCSRX_N
DCSRX_P
EGSMRX_N
EGSMRX_P
DCS_TX
EGSM_TX
UART0_TD
UART0_RD
UART1_RD
UART1_TD
UART1_CTS
UART1_RTS
OSC201
1 4
OSC200
2 3
SIM_CLK
SIM_DATA
SIM_RST
LCD_BL_EN
AUX_DET
32KHz_DIGIT
R207
VCHG_P
1005
VCM_OUT
VGPIO_2.8V
VCORE_1.25V
L201
CHG_REG
CHG_SW
SYSRST
RSTON
TRST_N
RAMP
RTCK
TCK
TDI
TDO
TMS
VF
OEn
WEn
R215
0ohm
1005
E1100
R216
0ohm
E1105
1005
R217
0ohm
E1105L
1005
R218
0ohm
E1105T
1005
R223
0ohm
E1100T
1005