Flow Chart Of Troubleshooting - Samsung SGH-C250 Service Manual

Flow Chart of Troubleshooting

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
L3
I|O
DSP_IO
L2
RWN
DSP_RWN
R3
RESETN_CSP
FLASH_RESET
E6
NC4
C5 OCTL1
F5
OCTL2
E5
NC
A4
OCTL4
XOENA
G6 OCTL5
VMOD_EN
B3
OCTL6
RF_EN
A3
OCTL7
TX_EN
B1
SERLE1
A2
SERLE2
SERLE
C1
SERDA
SERDAT
C2
SERCK
SERCLK
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③
④
VCCD_2.9V VCCA_2.9V
C100 C101
UCP101
C123
C124
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②
⑥
⑤
VCCD_2.9V
VBAT
C102
C108
VDD34 C11
VDD12 J13
N9
UP_CLK SIMCLK
UP_RST R10
SIMRST
UP_IO P10
SIMDATA
SIM_IO J11
SIM_IO
K11
SIM_RST 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
C12
VLDO_7
VLDO_6 A14
C9
VL5S_B
VL5S_A D10
VLDO_5 B10
VL4S_B B11
A12
VL4S_A BAND_SEL1
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
CH_BDRV E11
CH_ISEN F12
CH_RES D14
D15
NC3
E10
NC9
A10
VREF VREF
CREF E9
RTC_ALMN H10
RTCALARM
VIB_EN
INTRQ
PWR_KEEP
RST
KEY_COL(2)
3
1 TR103
2
KEY_ROW(0)
3-2
①
VCCA_2.9V VRADIO_2.9V VRF_2.9V
VCCB_2.9V
VCCD_2.9V
VCCD_1.8V
C112 C113 C114 C115 C116
VBAT C109
C120
VRTC_3V
C117
C118