Lcd Circuit Diagrams - LG DP170 Service Manual

LCD CIRCUIT DIAGRAMS

12
C1
L2 47nF
SY S_Y
2.7uH
R1
C5 C6 75
680pF 330pF
11
C10 R4
L4 47nF 4.7K
SC S_C
2.7uH
R6
C11 C12 75
390pF 560pF
C13 R7 C14
10 C15 0.1uF 1K 0.1uF
L5 2.7uH 47nF
CVBS AV
R9
C16 C17 75
680pF 330pF
27MHZ
Y1
2 1
C19
9
C18 R14 VDD33
22PF 1M 22PF
RESET_T
+7.5V
BIAS
8
C28 C29
0.1uF R17 R18 R19 0.1uF
39K 430 C33 1M
1uF
VG
C34
IOG 1 Q1
2N3904
10uF/10V
7
R20 R21
R22 C42
150 10K 100pF
100
VDD22
6
C47 C48 C49 C50 C51 C52
+
47uF/6.3V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
AVDD33
C60 + C61 C62 C63 C64 C65
47uF/6.3V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
5
VDD33
C73 C74 C75 C76 C77 C78
+
47uF/6.3V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
4
5VD R37
3
R40
10K R41
U5
20K
1 8
A OUT V+
VCOMO R42 10K C90
2 7
A- IN B OUT
C89 10uF/16V
3 6
A+ IN B- IN
4 5
GND B+ IN
10uF/16V
R45
R44 10K 3414
20K
2
-10V
C94
4.7uF/25V
1
A B C D
AVDD33 VDD33 VDD22
VDD33
U1
R5
4.7K
6
AC0/ACB0
S_C 5
AC1/ACB1
4
AC2/ACB2
81
VDT0
14 82
CVBS0/AY0 VDT1
S_Y 13 83
CVBS1/AY1 VDT2
12 84
CVBS2/AY2 VDT3
85
VDT4
22 86
CVBS3/ACR0 VDT5
R8 AV 21 87
CVBS4/ACR1 VDT6
1K
20 88
CVBS5/ACR2 VDT7
3 TERAWINS T100 90
CBMID VCLK
11
CGMID
19 38
CRMID RL
39
UD
SDA R10 2 1 33 29 40
IICA3/SDA STV1
SCL R11 2 1 30 41
SCANB/SCL STV2
33 42
GOE
R12 R 92 43
XTALI GCLK
R13 R 93 44
XTALO LP/OEH
45
POL/VCOM/HSO
36 49
XCLK2MC STH1/HSO
28 50
RSTB STH2/DE
31 52
CPUINT/SCANST CPH1/LLCK1
53
CPH2/LLCK2
100 54
VREF CPH3/LLCK3
73 71 RSET
VREFIN RSET
74 72
R15 VREFOUT COMP
99
FIB1
+ 34 62 IOB
4.7K PWM IOB
C21 65 IOG
IOG
0.1uF C22 C23 68 IOR
IOR
22uF/16V 0.1uF
C27
+ C26
0.1uF
105
+7.5V
BIAS
L10
7VD5
10uH
C41
C39 + C40
22uF/16V 0.1uF R23 R24 R25 0.1uF
39K 430 C43 1M
1uF
VR
C44
IOR 1 Q2
2N3904
10uF/10V
R26 R27
R28 C53
150 10K
100 100pF
+7.5V
BIAS
C66 C67
0.1uF R33 0.1uF
R31 R32
39K 430 C70 1M
1uF
VB
C72
IOB Q3
1
2N3904
10uF/10V
R34 R35 R36 C79
150 10K 100 100pF VCC_3V3
C82
0.1uF
VR1
10K
8.2K 1 3 R38 2K
VCOM
R43
150k
C91
470p C92
18p
E F G H
VDD22
L1 FB
+7.5V BIAS
+ R2 20K
C2 C3
0.1uF 0.1uF C4
100uF/6.3V
R3
+ C7
10K 47uF/10V
RP1 82
L/R
4 5
U/D
3 6
STV1
2 7
1 8 STV2
4 5 OEV
3 6 CKV
2 7 OEH
1 8 VCOMO
RP2 82
STH1
3 6
2 7 STH2 L6 FB100
1 8 CPH1
4 5
R16 RP3 82
C20
1K 22P
U2
AVDD33
CM1117SCM223 2.5V
D1 L7
VDD22 2 1 3 2 VDD33
OUT IN
FB
82.6ma + C30 IN5819 C31 + C32
47uF/6.3V 0.1uF 47uF/6.3V
L8
AVDD33
126ma 10uH
C36 + C35
0.1uF 47uF/6.3V C37 + C38
0.1uF 47uF/6.3V
D2 D3
+15V -10V
17V
10V
C46
C45
4.7uF/25V 4.7uF/25V
R30
R29
510
10K
D4 D5
C54 1uF 3 1 C55 1uF
C56 C57
2 2
C58 1uF 1 3 C59 1uF
0.1uF 0.1uF
BAT54S BAT54S
D6 D7
3 1
C68 C69
2 2
1 3
0.1uF 0.1uF
C71
0.1uF BAT54S BAT54S
L11
D8
10uH L12 5.4uH
1 2 7VD5
C80 C81
0.1uF 47uF/10V 5819
C83 C84
22uF/16V 22uF/16V
R39
150R(10K)
U4
C88
1 8
EO SS
2 7
IN FREQ 273
3 6
SHDN VDD
U6
4 5
GND SW
MP1540
AAT1102
4 3
EN FB
R46 51K
C93
0.1u
R47
10K
I J K L
3-7 3-8
5VD
L3
2.7uH
C8 + C9
+
10uF/10V
10uF/10V
JP1
26
AVSS
AVCC 25
AVDD
VB
24
VC
VG
23
VB
VR
22
VA
21
DVSS
DVCC
20
DVDD
CPH1 19
CPH1
18
CPH2
17
CPH3
STH1 16
STHR
STH2 15
STHL
OEH 14
OEH
13
Q1H
L/R
12
LR
VCOM
11
VCOM
VCOM
10
VCOM
OEV 09
OEV
U/D 08
U/D
CKV 07
CKV
STV2 06
STVL
STV1 05
STVR
+15V 04
VGH
-10V 03
VGL
DVCC 02
VCC
C24 C25 01
GND
4.7uF/16V 4.7uF/16V
CON26
L9 10uH
VCC_3V3
JP2
SPL+
2
SPL-
1
JP3
SPR+
2
SPR-
1
JP4
SPL-
1
SPL+
2
SPR-
3
SPR+
4
5
CVBS
6
GND
7
SY
8
GND
9
SC
10
GND
11
SDA
12
SCL
13
GND
14
RESET_T
15
GND
16
17
18
19
VCC_3V3
20
0.8-20PIN
U3 78L05
3 1 5VD
VIN VOUT
C85 C86
0.1u 22uF/16V
M N O P Q R S T