Skyworth 19E57, Service Manual

Page: 33 / 64

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
BL-ADJUST
BRI_ADJ-PWM1
BRI_ADJ-PWM0
12VST_ON/OFF
VBL_CTRL
PANEL_ON/OFF
+12V_1
5V
12VST_ON/OFF
STANDBY
BL-ON/OFF
STANDBY
BL-ADJUST
BL-ON/OFF
+5V_Normal
AVDD_DDR +1.8V_DDR2
+5V_Standby
+3.3V_Standby
+5V_Standby
+3.3V_Standby
+5V_Normal/
+5V_Standby
+3.3V_Standby
+12V_NORMAL
VPANEL_IN
VCC-Panel
+5V_Standby
+5V_Standby
+1.2V_VDDC
+5V_Normal
+5V_Normal
+5V_Normal/
VPANEL_IN
VCC-Panel
+1.2V_VDDM
+5V_Normal
+3.3V_Normal
+1.2V_VDDC
+12V_NORMAL
+5V_Normal/
+5V_Normal
+5V_Standby
+5V_Normal/
+12V_NORMAL
+5V_Standby
+5V_Normal
+1.2V_VDDM
PWR-ON/OFF
BRI_ADJ-PWM1
PANEL_ON/OFF
2
VBL_CTRL
BRI_ADJ-PWM0
130mA
500mA
8M27 SCHEMATIC DIAGRAM (1)
LDO
2010-3-14
320mA
DGND GND AGND GND_SIGNAL
320mA
0.4~0.6V
5V
150mA
THIS IS MAIN BOARD SCHEMATIC DIAGRAM,ONLY FOR REFERENCE.
SOME SPECIAL FUNCTIONS ARE OPTIONAL.IT IS SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE.
Q26
3904
Q26
3904
1
2
3
R34
1K R34
1K
R48
4.7K R48
4.7K
R61
56K_1% R61
56K_1%
C88
NC/2.2uF
C88
NC/2.2uF
H4
NC
H4
NC
1
2
3
4
5
6
7
8
9
Q5
ME2345 Q5
ME2345
C73
0.1uF
C73
0.1uF
R24
0R/200R
R24
0R/200R
R66 NC/0 R66 NC/0
CN2
CON10:5400-924000-10
CN2
CON10:5400-924000-10
1
2
3
4
5
6
7
8
9
10
M3
NC
M3
NC
1
C16
0.1uF
C16
0.1uF
R35 0R R35 0R
R1881.2K R1881.2K
R40
10K
R40
10K
L39 FB/NC L39 FB/NC
C24
0.1uF
C24
0.1uF
R28
2K
R28
2K
+ CA29
100uF/16V
+ CA29
100uF/16V
A
D
J
O
U
T
IN
U1
AS1117L-1.2
A
D
J
O
U
T
IN
U1
AS1117L-1.2
3 2 1
4
M4
NC
M4
NC
1
R25
2.2K
R25
2.2K
C149
0.1uF
C149
0.1uF
L38 FB L38 FB
C75
2.2uF
C75
2.2uF
H3
NC
H3
NC
1
2
3
4
5
6
7
8
9
C80
33nF
C80
33nF
L44 3.3uH L44 3.3uH
C110
10uF
C110
10uF
R64
22R
R64
22R
L11
10uH/3A
L11
10uH/3A
R31 4.7K R31 4.7K
L27 FB L27 FB
R22
NC/200R
R22
NC/200R
C76
0.1uF
C76
0.1uF
C17
2.2uF
C17
2.2uF
C23
0.1uF/16v
C23
0.1uF/16v
R197
2K
R197
2K
R43 1K R43 1K
Q19
3904
Q19
3904
1
2
3
R340 2.2K R340 2.2K
C113
0.1uF
C113
0.1uF
C28
0.1uF
C28
0.1uF
C82
0.1uF
C82
0.1uF
C21
10uF
C21
10uF
R49
NC/12K
R49
NC/12K
C18
0.1uF
C18
0.1uF
R72 33k R72 33k
+ CA53
22uF/16V
+ CA53
22uF/16V
Q7
3904
Q7
3904
1
2
3
FB1 0R FB1 0R
R46
2.2K
R46
2.2K
+
CA126
220uF/16V
+
CA126
220uF/16V
U7
MP1495DJ-LF-Z
U7
MP1495DJ-LF-Z
AAM
1
IN
2
SW
3
G
N
D
4
BST
5
EN/SYNC
6
VCC
7
FB
8
Q23
3904 Q23
3904 1
2
3
L22 FB L22 FB
R344 100 R344 100
M2
NC
M2
NC 1
C114
2.2uF
C114
2.2uF
C142
0.1uF
C142
0.1uF
R32 1K R32 1K
R68
100K
R68
100K
A
D
J
O
U
T
IN
U4
AS1117L-1.8 A
D
J
O
U
T
IN
U4
AS1117L-1.8
3 2 1
4
+
CA125
100uF/16V
+
CA125
100uF/16V
R38 4.7K R38 4.7K
R65
10K_1% R65
10K_1%
C29
0.1uF
C29
0.1uF
L7 0R L7 0R
R2 NC/1.2K R2 NC/1.2K
R42
1K
R42
1K
R343 2.2K R343 2.2K
U10
ME9435A
U10
ME9435A
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
C116
0.1uF
C116
0.1uF
R52
47K
R52
47K
A
D
J
O
U
T
IN
U8
AS1117L-3.3
A
D
J
O
U
T
IN
U8
AS1117L-3.3
3 2 1
4
R33 10K R33 10K
C3
0.1uF
C3
0.1uF
Q28
3904 Q28
3904
1
2
3
Q18
3904 Q18
3904
1
2
3
R39 1K R39 1K
L28
FB
L28
FB
R45
4.7K
R45
4.7K
H6
NC
H6
NC
1
2
3
4
5
6
7
8
9
C25
10uF/16v
C25
10uF/16v
R1
0R
R1
0R
R56 10K R56 10K
R67 470K R67 470K
H5
NC
H5
NC
1
2
C27
NC/0.1uF
C27
NC/0.1uF
U53 SY8086 U53 SY8086
EN
1
FB
5
VCC
4
OUT
3
GND
2
R93 10k R93 10k
C22
10uF
C22
10uF
C4
10uF
C4
10uF
C199
0.1u
C199
0.1u
R341 4.7K R341 4.7K
TP3
NC
TP3
NC
1
A
D
J
O
U
T
IN
U12
AS1117L-3.3
A
D
J
O
U
T
IN
U12
AS1117L-3.3
3 2 1
4
R44
10K/NC
R44
10K/NC
R70
NC
R70
NC
TP2
NC
TP2
NC
1
C32
10nF
C32
10nF
R157
20K
R157
20K
R51
10K R51
10K
C98
0.1uF
C98
0.1uF
H1
NC
H1
NC
1
2
3
4
5
6
7
8
9
C2
0.1uF
C2
0.1uF
Q21
3904 Q21
3904
1
2
3
FB2 NC/0R FB2 NC/0R
C77
10uF
C77
10uF
C83
1uF
C83
1uF
R159
22K
R159
22K
C1
2.2uF
C1
2.2uF
R53
100K R53
100K
L50 FB L50 FB
C140
10pF
C140
10pF
M1
NC
M1
NC 1
C97
0.1UF
C97
0.1UF
C72 1uF C72 1uF
R69
2.2K
R69
2.2K
Q4
AO3401A/NC Q4
AO3401A/NC
+ CA13
22uF/16V
+ CA13
22uF/16V
R27
1.2K
R27
1.2K
C119
1uF
C119
1uF
C35 NC/0.1uF C35 NC/0.1uF