ViewSonic VG2021m-1 Service Manual page 65

20” color tft lcd display
Table of Contents

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RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
DDCA_DAT
DDCA_CLK
R+
R-
G+
G-
B+
B-
CLK+
CLK-
DDCD_DAT
DDCD_CLK
AVDD
VCC33
0603/100n/25V/7
0603/100n/25V/7
V5A
U2
U2
8
VDD
SDO
C90
C90
WP
7
HOLD#
CE#
WP
3
WP#
SCK
0603/100n/25V/7
0603/100n/25V/7
4
VSS
C80
C80
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
GND
Pm25LV512
Pm25LV512
C94
C94
0603/22p/50V/N
0603/22p/50V/N
GND
C93
C93
0603/22p/50V/N
0603/22p/50V/N
GND
VCC33
R118 R0603/OPEN
R118 R0603/OPEN
R119 R0603/OPEN
R119 R0603/OPEN
need to modify, the SAR is
6 bits and the max voltage
is 1.8V
PIN
RIGHT
POWER
AUTO
LEFT
MENU
TURBO
RIGHT
+LEFT
+POWER
ViewSonic Corporation
VDVI
VMPLL
VPLL
AVDD
VDPP
VDDC
C68
C68
0603/100n/25V/7
0603/100n/25V/7
C92
C92
0603/100n/25V/7
0603/100n/25V/7
U1
U1
GND
GND
11
VCTRL
107
NC/LVACKP/NC
RIN
59
108
RIN0P
NC/LVACKM/NC
GNDR
FB0N
58
109
RIN0N
RA1P/LVA2P/RA2
GIN
56
110
FB0P
GIN0P
RA1N/LVA2M/RA3
GNDG
55
111
FB1N
GIN0N
RA2P/LVA1P/RA4
SOG
FB1P
57
112
SOGIN0
RA2N/LVA1M/RA5
BIN
FB2N
54
113
BIN0P
RA3P/LVA0P/RA6
GNDB
FB2P
53
114
BIN0N
RA3N/LVA0M/RA7
HSYNC
63
HSYNC0
VSYNC
64
98
FG0N
VSYNC0
GA1P/NC/GA2
DDCA_DAT
FG0P
65
99
DDCA_SDA/RS232_Tx
GA1N/NC/GA3
DDCA_CLK
FG1N
66
100
DDCA_SCL/RS232_Rx
GA2P/NC/GA4
FG1P
101
GA2N/NC/GA5
R+
FG2N
39
105
RX2P
GA3P/LVA3P/GA6
R-
40
106
FG2P
RX2N
GA3N/LVA3M/GA7
G+
42
RX1P
G-
FR0N
43
89
RX1N
BA1P/NC/BA2
B+
FR0P
45
90
RX0P
BA1N/NC/BA3
B-
FR1N
46
91
RX0N
BA2P/NC/BA4
CLK+
48
92
FR1P
RXCKP
BA2N/NC/BA5
CLK-
FR2N
49
93
RXCKN
BA3P/NC/BA6
DDCD_DAT
FR2P
36
94
DDCD_SDA
BA3N/NC/BA7
DDCD_CLK
37
DDCD_SCL
BB0N
9
RB1P/NC/RB2
10
BB0P
RB1N/NC/RB3
15
BB1N
RB2P/NC/RB4
R124 0603/390R/1%
R124 0603/390R/1%
BB1P
51
16
REXT
RB2N/NC/RB5
BB2N
17
RB3P/NC/RB6
BB2P
18
RB3N/NC/RB7
62
REFP
C91
C91
2
BG0N
GB1P/NC/GB2
BG0P
3
GB1N/NC/GB3
BG1N
61
5
REFM
GB2P/NC/GB4
BG1P
6
GB2N/NC/GB5
7
BG2N
GB3P/NC/GB6
TSUM57AK
TSUM57AK
8
BG2P
GB3N/NC/GB7
FCKP
118
CLKAP/LVB3P/LHSYNC
FCKN
2
70
119
SDO
CLKAN/LVB3M/LVSYNC
1
71
120
BCKP
SCZ
CLKBP/LVBCKP/LCK_ODD
6
72
121
BCKN
SCK
CLKBN/LVBCKM/LDE
5
73
122
SDI
SDI
NC/LVB2P/NC
123
NC/LVB2M/NC
BR0N
124
BB1P/LVB1P/BB2
BR0P
125
BB1N/LVB1M/BB3
126
BR1N
BB2P/LVB0P/BB4
BR1P
19
127
RST
BB2N/LVB0M/BB5
BR2N
128
BB3P/NC/BB6
BR2P
1
BB3N/NC/BB7
80
BSTH
ESP
FSTH
32
81
XIN
OSP
GVOFF
88
GPO0
Y1
Y1
STB
87
GPO1
STV
14.31818MHz
14.31818MHz
86
GPO2
33
85
CPV
XOUT
GPO3
OE
84
GPO4
83
GPO5
POL
82
GPO6
75
GPIO_P22
74
GPIO_P23
26
GPIO_P03
R103 0603/100R/5%
R103 0603/100R/5%
35
GPIO_P16/PWM2
102
69
R104 0603/100R/5%
R104 0603/100R/5%
MODE[0]
GPIO_P15/PWM0
104
78
MODE[1]
PWM2/GPIO_P24
79
GPIO_P27/PWM1
20
GPIO_P12
21
PWM1/GPIO_P25
22
RSTN
SAR1
23
GPIO_P00/SAR1
SAR2
24
GPIO_P01/SAR2
25
GPIO_P02/SAR3
27
GPIO_P06
LED_OR
28
GPIO_P07
29
PWM0/GPIO_P26
GND
R105 0603/100R/5%
R105 0603/100R/5%
30
GPIO_P13
31
GPIO_P14
77
DDCROM_SCL
76
DDCROM_SDA
GND
VCC33
VOLTAGE
1.77V
C152
C152
0805/10u/6.3V/5/open
0805/10u/6.3V/5/open
R127
R127
0603/20K/1%/OPEN
0603/20K/1%/OPEN
1.24V
GND
0.47V
SAR1
R128
R128
LEFT
0603/23.2K/1%/OPEN
0603/23.2K/1%/OPEN
SAR11
SAR11
1.77V
R200
R200
R67
R67
MENU
1.24V
0603/10M/5%/RoHS/OPEN
0603/10M/5%/RoHS/OPEN
0603/12.1K/1%/OPEN
0603/12.1K/1%/OPEN
0.47V
R134
R134
TURBO
0603/3.3K/1%/OPEN
0603/3.3K/1%/OPEN
GND
SR1(1.77) SR2(0.93)
Confidential - Do Not Copy
62
VCC33
L10
L10
1
2
V33C
C55
C55
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
VCTRL
Close to respective power Pins
GND
FB0N
FB0P
L11
L11
FB1N
1
2
FB1P
FB2N
FB2P
C65
C65
FG0N
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
FG0P
FG1N
FG1P
FG2N
FG2P
GND
FR0N
FR0P
FR1N
L12
L12
HCB2012KF-420T40
HCB2012KF-420T40
FR1P
1
2
FR2N
FR2P
BB0N
C74
C74
BB0P
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
BB1N
BB1P
BB2N
BB2P
GND
BG0N
VPLL
BG0P
BG1N
L13
L13
BG1P
1
2
BG2N
BG2P
FCKP
C76
C76
FCKN
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
BCKP
BCKN
BR0N
Frame inversion : GPO5
Close to respective power Pins
BR0P
, GPO6
POL (
BR1N
GND
BR1P
GPO5
GVOFF), GPO0
AVDD
BR2N
BR2P
GVOFF (
GVON)
L14
L14
1
2
BSTH
VCC33
VCC33
VCC33
FSTH
GVOFF
STB
C78
C78
STV
1206/10u/16V/X/PbF
1206/10u/16V/X/PbF
GPO51
GPO51
CPV
OE
V12A
1
TP
POL
V5A
AUDIO_ON
GND
Close to respective power Pins
AUD_DET
V5A
AUTO
DVI
(R,G,B )
POWER
VCM_PWM
PANEL_ON/OFF
INV_ON/OFF
INV_ADJ
GND
GND
R120 0603/10K/5%
R120 0603/10K/5%
R110 0603/100R/5%
R110 0603/100R/5%
MENU
R117 0603/100R/5%
R117 0603/100R/5%
LEFT
R121 0603/100R/5%
R121 0603/100R/5%
C88 0603/100n/25V/7
C88 0603/100n/25V/7
RIGHT
LED_GL
LED_GL
GND
LED_OR
VOL_ADJ
TURBO
VCC33
C81
C81
0603/100n/25V/7
0603/100n/25V/7
U7
U7
AT24C16AN-10SU-2.7/RoHS
AT24C16AN-10SU-2.7/RoHS
8
1
VCC
A0
R1000603/100R/5%
R1000603/100R/5%
R102
R102
R101 0603/100R/5%
R101 0603/100R/5%
0603/4.7K/0.1%/RoHS
0603/4.7K/0.1%/RoHS
7
2
WP
A1
6
3
SCL
A2
5
4
SDA
GND
GND
VCC33
C150
C150
0805/10u/6.3V/5/open
0805/10u/6.3V/5/open
R137
R137
0603/20K/1%/OPEN
0603/20K/1%/OPEN
GND
0603/10n/25V/7/RoHS
0603/10n/25V/7/RoHS
SAR2
SAR2
R138
R138
RIGHT
0603/23.2K/1%/OPEN
0603/23.2K/1%/OPEN
SAR21
SAR21
R139
R139
POWER
R201
R201
0603/12.1K/1%/OPEN
0603/12.1K/1%/OPEN
0603/10M/5%/RoHS/OPEN
0603/10M/5%/RoHS/OPEN
R140
R140
AUTO
0603/3.3K/1%/OPEN
0603/3.3K/1%/OPEN
GND
VG2021m-1
VDPP
C56
C56
C57
C57
C58
C58
C59
C59
C60
C60
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
VDVI
VDVI1
VDVI1
1
TP
TP
TP
C66
C66
C67
C67
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
Close to respective power Pins
VMPLL
VMPLL1
VMPLL1
1
TP
C75
C75
0603/100n/25V/7
0603/100n/25V/7
Close to respective power Pins
VPLL1
VPLL1
1
TP
VCC18
L17
L17
1
2
V18C
C77
C77
0603/100n/25V/7
0603/100n/25V/7
C84
C84
1206/4.7u/16V/Y
1206/4.7u/16V/Y
C85
C85
0603/100n/25V/7
0603/100n/25V/7
Close to respective power Pins
AVDD1
AVDD1
GND
1
TP
C79
C79
0603/100n/25V/7
0603/100n/25V/7
12v
5V
,
12v
DVI
0603/0R/5%/open
0603/0R/5%/open
DVI_5V
R214
R214
DSUB
0603/0R/5%/open
0603/0R/5%/open
DSUB_DET
R213
R213
VCC33
DCDC_ON/OFF
DCDC_ON/OFF
1
Q7
Q7
C89
C89
MMBT3904-F
MMBT3904-F
0603/100n/25V/7
0603/100n/25V/7
POWER_ON-OFF
erased,
Write Protect
GND
U5
U5
4
3
GND
NC
VSS
2
Vref
VDD
5
1
VCC33
CD
OUT
C70
C70
RN5VD40AA/RoHS
RN5VD40AA/RoHS
R212
R212
0603/2.7K/1%
0603/2.7K/1%
GND
WP
VDPP1
VDPP1
1
TP
VDDC
VDDC1
VDDC1
1
TP
C86
C86
C87
C87
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
0603/100n/25V/7
ViewSonic Corporation
Model
Title
Date
Rev:

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