Samsung SGH-S300 Service Manual page 30

1 2
A
TH1X 5
C105
2.2U F
B
C
PWR_KEEP
PWR_ON
JIG_O N
D
KEY_COL(2 )
KEY_ROW(0)
E
LCDVIB_EN
F
1 2
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3 4
CN10 0
6
1 1 6
5 5
22
4
C103
3 3 4
C104 G G G G
33PF
C106
C107
100N F 10 9 8 7
33PF
33PF
SIMDATA
SIMCL K
SIMRST
C109 47NF
TP101
TA_VEX T
RESET_IN T
RST
R10 1
0
C119
100N F
CHG_DE T
C125 R110
100NF 330K
VRTC
R102
390K
3 RTCALARM
1
EN_VRF
2
Q100 EN_VPAC
XOENA
UP_SDI
UP_SCL K
UP_CS
VBA T
U101
5 1
OUT IN
D100
2
GND
4 3
VIB_EN
REF_BYP E N
C102
47PF
3 4
SAMSUNG Proprietary-Contents may change without notice
5 67
VCC_1.8A
C108
100N F
U100
64
UC_I O CREF 34
65 35
UC_CL K VREF VRE F
66 UC_RS T
13
VLDO_ 1
15
61 SIM_RST
VLDO_ 2
46
62
SIM_CLK VLDO_ 3
44
63 SIM_IO
VLDO_ 4
43
60
VSIM VL4S_ A
42
VL4S_ B
39
59 CPCP
VLDO_ 5
38
57 CPCN VL5S_ A
7 37
VACC VL5S_ B
49
68
ACC_ALM VLDO_ 6
4 52
3 VEXT VLDO_ 7
12
CFET_DRV VRTC
27
19
_RESET_I RING_PWM
28 9
VBA T
_RESET_O RING_DRV
8
VIB_DRV
1
11
CHG_STAT0 LED_DRV BACKLIGHT C112
14
2
CHG_STAT1 VDD12
2.2UF
47
29 CHG_DE T VDD3
45 C111 C120
67 EOR_ACC
VDD4
32
40 2.2UF 2.2U F
PWR_KEE P VDD5
51 48
PWR_SW1 VDD6
50 53
VBA T
33 PWR_SW2 VDD7
5
_RTC_ALM VDDQ
30 R103
6
PSW1BU F VBAT
31 2.4
58
PSW2BU F VDDCP
54
20 BAT_TEMP
10 C123 C124
EN_3 GNDD1
21
36 2.2UF 100N F
EN_4/EN_4S GNDA
22 55
EN_5 GNDA
23 56
EN_5S GNDCP
24 41
EN_6 GNDQ
25 69
EN_7 GND
26 70
EN_R GND
71
16
SD I GND
72
17
SCLK GND
18
_C S
TA_VEXT
C127
10UF
10V
U103
1
2
CHG_ON
3
POWER
Changed by Date Changed
2002.11.13
user12
56
6-13
SGH-S300 Flow Chart of Troubleshooting and Circuit Diagrams
8
VCCD VRF VPA C VOSC VCCA VCCB VRTC
R10 6
0
R100
1.2K
C114 C115 C116
C113 C117 C101 C118
2.2U F 2.2U F 2.2U F
2.2U F 2.2U F 2.2UF 100PF
M1
Q101
6
5
2
4 1
VBA T
U102 3
ISENSE
1 6
DRIVE
GND
2 5
VSENSE
3 VC C PROG 4
C126
10UF
10 V
6
R111
0
R112
ICHRG
47K,1%
5
TA_VEX T
R113
3K
4
Engineer
COMPANY NAME
SEOY H
Address
Drawn by
City
SEOY H
R&D CH K
TITLE :
DOC CTRL CH K
SGH-S30 0
MFG ENGR CH K
Time Changed QA CH K REV Drawing Numbe r
Shee to
6:01:19 pm
78
A
B
C
D
E
F
Size
A3
f
11 0