![background image](http://html.mh-extra.com/html/samsung/sgh-c250/sgh-c250_service-manual_1190404020.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-6
This Document can not be used without Samsung's authorization
CKO/IACK/ERAMHI
K
L
C_
R
T/]
5[
B
K_
P
C
F
R
E
P_
S
C_
R
T/]
2[
B
K_
P
C
0
E
ZI
S_
R
T/]
4[
B
K_
P
C
IOBIT[2]/VEC[3]/EROMHI
A
Q
E
R_
T/
33
A
P
B
Q
E
R_
T/
43
A
P
0
M
OI/
82
A
P
M
O
RI
_
S
C_
R
T/]
1[
B
K_
P
C
1
E
ZI
S_
R
T/]
7[
B
K_
P
C
1
X
T/
31
A
P
K
L
C_
0
M
S/
K
L
C_
MI
S
K
C
A_
T/
81
A
P
A
T
A
D_
0
M
S/
A
T
A
D_
MI
S
P
C
PI
_
S
C_
R
T/]
3[
B
K_
P
C
1
M
OI/
92
A
P
Q
R
D/
71
N
P
T
E
S
E
R_
H
S
A
L
F
IOBIT[1]/VEC[4]/PLLTOA
1
X
R/
41
A
P
0
T
O
R
P_
R
T/]
6[
B
K_
P
C
C
E
X
E
N_
R
T/]
8[
B
K_
P
C
A
M
D_
T
N
G_
R
T/]
9[
B
K_
P
C
0
MI/
03
A
P
1
MI/
13
A
P
M
A
RI
_
S
C_
R
T/]
0[
B
K_
P
C
O
M_
P
C/
91
A
P
I
M_
P
C/
02
A
P
A
T
A
D_
1
M
S/
22
A
P
0
M
O/
52
A
P
1
M
O/
62
A
P
K
L
C_
1
M
S/
72
A
P
C214
C221
VCCD_1.8V
R203
C212
R210
VCCD_1.8V
100K
R207
R209
R206
VCCD_2.9V
VCCD_1.8V
C213
R212
5
R
1
M
W
P
X
E8
XRTCALARM_N
01
N
21
U
D12
XTIC_MODE
F
E
R
V
X
0
1
F
51
N
XPA3/CS4N
N14
P16
XPA4/OEN
XPA5/WAITN
P15
XPA6/BE1N
T15
M9
XPA7/IRQ1
XPA8/IRQ2
T5
P2
XPA9/IRQ3
1
F
XPA2/CS3N
M11
3
F
1
E
N0
S
C
_2
3
A
P
X
41
H
71
N
71
M
3
1
L
2
2
A_
53
A
P
X
N5
S
C
_3
2
A_
63
A
P
X
4
K
6J
2
M
W
P/
32
A
P
X
6
H
5
H
3
M
W
P/
42
A
P
X
3
M
2
G
4
G
5
G
3
G
4
H
0
X
T/
51
A
P
X
0
X
R/
61
A
P
X
3
L
4
E
31
P
2
L
XPA1/CS2N
M14
1
L
K
C
S_
P
C/
12
A
P
X
C13
4
F
XOSC32OUT
C6
M15
XPA0/CS1N
XPA10/IRQ4
N2
X
R
A
D
RI/
11
A
P
X
5
K
X
T
A
D
RI/
21
A
P
X
1
N
6
G
3
U
3
P
4
T
3
N
K
C
T_
P
C
X
7
D
O
D
T_
P
C
X
31
D
8
G
S
M
T_
P
C
X
N
T
S
R
T_
P
C
X
9
F
XCP_WEN
B4
XCP_D9
I
D
T_
P
C
X
7
C
4
L
5
L
4
M
1
T
2
R
3
T
E3
XCP_D15
XCP_D2
F8
F7
XCP_D3
C5
XCP_D4
D6 XCP_D5
E7
XCP_D6
XCP_D7
D5
XCP_D8
C4
A12
XCP_CSROMEN
A6
XCP_D0
XCP_D1
B5
B3
XCP_D10
XCP_D11
C1
C2
XCP_D12
XCP_D13
D2
XCP_D14
D3
D15
XCP_A4
B15
C14 XCP_A5
A16
XCP_A6
A15 XCP_A7
B17
XCP_A8
XCP_A9
C17
XCP_CSRAMEN
A13
J12
XCP_A16
K12
K13
XCP_A17
K14
XCP_A18
L14
XCP_A19
E14
XCP_A2
L15
XCP_A20
XCP_A21
L16
XCP_A3
M12
XCPTSTSTOP_CKO
XCP_A0_BEON
B13
XCP_A1
F11
D16
XCP_A10
F14
XCP_A11
G14
XCP_A12
XCP_A13
G13
G17
XCP_A14
XCP_A15
L
L
P
D_
S
S
V
A7
X1RTC
X2RTC
D10
XAG0
B11
A11
XAG1
E11
XAG2
XAG3
D11
B7
XBSWN
S
S
V
9
G
S
S
V
S
S
V
01
G
7
H
S
S
V
11
H
S
S
V
S
S
V
7J
S
S
V
6
K
A
S
S
V
01
E
51
E
7
K
S
S
V
6
L
S
S
V
S
S
V
0
1
L
7
M
S
S
V
S
S
V
8
L
S
S
V
11
J
9
L
S
S
V
S
S
V
3
A
6
F
E
D
D
V
61
U
E
D
D
V
E
D
D
V
61
N
61
E
E
D
D
V
E
D
D
V
71
E
61
G
L
L
P
D_
D
D
V
8
D
C
T
R
V
2
A
S
S
V
D
D
V
61
C
D
D
V
11
C
A
D
D
V
E
D
D
V
1
B
41
B
E
D
D
V
1
M
E
D
D
V
E
D
D
V
2
U
8
P
E
D
D
V
51
U
2
E
D
D
V
D
D
V
7
1
L
D
D
V
1
G
1
R
D
D
V
D
D
V
4
R
3
1
T
D
D
V
D
D
V
61
R
71
R
D
D
V
5
A
2
21
C
B
T
S
R
U5
RWN
TCK
H13
H12
TDI
TDO
F12
TMS G12
F15
TRST
M6
DB#8
P7
N7
DB#9
INT#0
N4
IO7
R12
K11
L12
1
C
N
C
N
T11
DB#14
R11
P10
DB#15
DB#2
R6
P6
DB#3
DB#4
U7
DB#5
T7
R7
DB#6
DB#7
T17
I
K
C
7
1
F
G15
DB#0
P5
DB#1 U6
N8
DB#10
DB#11
M8
U11
DB#12
DB#13
U13
M10
AB#1
AB#2
R13
AB#3
N11
P11
AB#4
AB#5
P12
R14
AB#6
T14
AB#7
AB#8
UCP201
AB#0
R211
VCCD_2.9V
TH200
VBAT
C217
C218
VCCB_2.9V
L200
VCCD_2.9V
NC
3
OUT
2
1
VDD
4
VSS
U203
C220
VRTC_3V
C211
R215
R205
R208
4
3
1
C219
OSC200
2
VCCD_1.8V
D
X
T_
G
U
B
E
D
VCCD_2.9V
R216
C216
R201
VCCD_2.9V
47K
DEBUG_DTR
KEY_COL(4)
KEY_ROW(4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(0:4)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(0:4)
RADIO_INT
LED_EN
VREF
CLK32K
EAR_SWITCH
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
CHG_DET
DEBUG_RXD
UPPER_BYTE
INTRQ
RTCALARM
SIMCLK
SIMDATA
RADIO_BUSEN
DSP_IO
DSP_INT
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(1)
DSP_DB(0)
CLK13M_TR
D(9)
CP_TDI
CP_TCK
CP_TDO
CP_TMS
TR_RST
CP_WEN
FLASH_RESET
YMU_IRQ
I2C_CLK
I2C_DAT
SDS_TXD
SDS_RXD
JACK_IN
AUDIO_SEL
UP_SDI
LCD_CS
UP_SDO
UP_SCLK
UP_CS
CHG_OFF
SIMRST
PWR_KEEP
BP_CF
A(22)
YMU_EN
CP_OEN
A(16)
A(17)
A(18)
A(19)
A(2)
A(20)
A(21)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
CP_CSRAMEN
CP_CSROMEN
D(0)
D(1)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)
TR_RST
DSP_RWN
TR_RST
ICHRG
TR_RST
A(0)
A(1)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
DSP_DB(15:0)
D(0:15)
A(0:20)
DSP_AB(8:0)