ViewSonic VG921m-2 Service Manual page 46

19” color tft lcd display
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R529
51Ω 1/16W
C163
+
Q15
4.7uF/35V
CHT2907
D25
LL4148WP
B
R530
D26
2KΩ 1/16W
LL4148WP
R531
GND
100Ω 1/16W
3.3V
TP78
TP81
HSI
VSI
R35
100Ω 1/16W
DDC_SDA
R37
100Ω 1/16W
DDC_SCL
D20
D21
NC/UDZS5.6B
NC/UDZS5.6B
GND GND
AVDD
3.3V
C156
U402
8
2
0.1uF/16V
VDD
SDO
7
1
HOLD#
CE#
3
6
5V
WP#
SCK
4
5
VSS
SDI
C157
+
SST25VH010
10uF/16V
WP
C229
C28
22pF
0.1uF
Y1
GND
GND
GND
GND
14.318MHZ
C29
22pF
3.3V
ViewSonic Corporation
VCTRL
1.8V
VDVI
VMPLL
VPLL
AVDD
VDDP
VDDC
3.3V
U401
NC/LVACKP/NC
C13
0.047uF
59
R_IN+
RIN0P
NC/LVACKM/NC
C12
0.047uF
58
R_IN-
RIN0N
RA1P/LVA2P/RA2
C15
0.047uF
56
G_IN+
GIN0P
RA1N/LVA2M/RA3
C14
0.047uF
55
G_IN-
GIN0N
RA2P/LVA1P/RA4
C16
0.047uF
57
SOGI
SOGIN0
RA2N/LVA1M/RA5
C20
0.047uF
54
B_IN+
BIN0P
RA3P/LVA0P/RA6
C17
0.047uF
53
B_IN-
BIN0N
RA3N/LVA0M/RA7
63
HSYNC0
64
VSYNC0
GA1P/NC/GA2
65
DDCA_SDA
GA1N/NC/GA3
66
DDCA_SCL
GA2P/NC/GA4
GA2N/NC/GA5
39
DVI_R+
RX2P
GA3P/LVA3P/GA6
40
DVI_R-
RX2N
GA3N/LVA3M/GA7
42
DVI_G+
RX1P
43
DVI_G-
RX1N
BA1P/NC/BA2
45
DVI_B+
RX0P
BA1N/NC/BA3
46
DVI_B-
RX0N
BA2P/NC/BA4
48
DVI_CLK+
RXCKP
BA2N/NC/BA5
49
DVI_CLK-
RXCKN
BA3P/NC/BA6
36
DVI_SDA
DDCD_SDA
BA3N/NC/BA7
37
DVI_SCL
DDCD_SCL
RB1P/NC/RB2
RB1N/NC/RB3
RB2P/NC/RB4
R28
390 1%
51
REXT
RB2N/NC/RB5
RB3P/NC/RB6
RB3N/NC/RB7
62
REFP
C27
GB1P/NC/GB2
GB1N/NC/GB3
0.1uF
61
REFM
GB2P/NC/GB4
GB2N/NC/GB5
GB3P/NC/GB6
GB3N/NC/GB7
TSUM57AK
CLKAP/LVB3P/LHSYNC
70
SDO
RSDS/LVDS/TTL
CLKAN/LVB3M/LVSYNC
71
SCZ
CLKBP/LVBCKP/LCK_ODD
72
SCK
CLKBN/LVBCKM/LDE
73
SDI
NC/LVB2P/NC
NC/LVB2M/NC
BB1P/LVB1P/BB2
BB1N/LVB1M/BB3
BB2P/LVB0P/BB4
19
RST
BB2N/LVB0M/BB5
BB3P/NC/BB6
BB3N/NC/BB7
32
GND
XIN
R29
33
NC/ 1MΩ 1/16W
XOUT
GPIO_P22
GPIO_P23
GPIO_P03
GPIO_P16
R192
NC
102
MODE[0]
GPIO_P15
R193
NC
104
MODE[1]
PWM2/GPIO_P24
GPIO_P27/PWM1
GPIO_P16
PWM1/GPIO_P25
GPIO_P17/SAR0
GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3
GPIO_P06
GPIO_P07
PWM0/GPIO_P26
GND
GPIO_P13
GPIO_P14
DDCROM_SCL
DDCROM_SDA
GND
43
Confidential - Do Not Copy
FB2
1.8V
VDDC
600 OHM
C24
C9
C19
C151
C23
+
10uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
GND
FB6
3.3V
VDDP
600 OHM
C152
C153
C21
C22
C154
C155
+
10uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
GND
11
VCTRL
VCTRL
B_D17
107
B_D16
108
B_D15
109
F_D13
B_D14
110
F_D12
B_D13
111
F_D15
B_D12
112
F_D14
B_D11
113
F_D17
B_D10
114
F_D16
B_D9
B_D8
98
F_D7
B_D7
99
F_D6
B_D6
100
F_D9
B_D5
101
F_D8
B_D4
105
F_D11
B_D3
106
F_D10
B_D2
B_D1
89
F_D1
B_D0
90
F_D0
B_D19
91
F_D3
B_D18
92
F_D2
B_D[0..19]
93
F_D5
94
F_D4
F_D[0..19]
F_D19
9
B_D5
F_D18
10
B_D4
F_D17
15
B_D3
F_D16
16
B_D2
F_D15
17
B_D1
F_D14
18
B_D0
F_D13
F_D12
2
B_D11
F_D11
3
B_D10
F_D10
5
B_D9
F_D9
6
B_D8
F_D8
7
B_D7
F_D7
8
B_D6
F_D6
F_D5
118
F_D19
F_D4
119
F_D18
F_D3
120
B_D19
F_D2
121
B_D18
F_D1
122
F_D0
123
124
B_D17
125
B_D16
126
B_D15
127
GND GNDGND
B_D14
128
B_D13
1
B_D12
80
ESP
ESP
81
OSP
OSP
88
R17
22Ω 1/16W
GPO0
POL
87
R22
22Ω 1/16W
GPO1
LP
86
R18
22Ω 1/16W
TP73
GPO2
STV1
85
R21
22Ω 1/16W
GPO3
CPV
TP74
84
R16
22Ω 1/16W
GPO4
OE
83
TP76
GPO5
82
GPO6
75
74
26
GND
GND
TP79
WP
R31
100Ω 1/16W
35
69
78
79
20
21
22
23
R42
100Ω 1/16W
24
R43
100Ω 1/16W
25
R44
100Ω 1/16W
27
28
29
30
31
3.3V
77
76
C10
0.1uF/16V
U1
8
VCC
A0
7
WP
A1
R7
100Ω 1/16W
6
SCL
SCL
A2
R8
100Ω 1/16W
5
SDA
SDA
GND
AT24C16N-10SC-2.7
GND
VG921m-2
3.3V
AVDD
3.3V
FB407
VPLL
FB1
600 OHM
600 OHM
C3
C4
0.1uF/16V
0.1uF/16V
GND
GND
FB408
3.3V
VDVI
3.3V
FB406
VMPLL
600 OHM
C5
C6
600 OHM
C7
C8
0.1uF/16V
0.1uF/16V
0.1uF/16V
0.1uF/16V
GND
GND
H11
L1
80ohm
GND
STHB,F SWAP 10/06
R532
NC
R533
NC
5V
R182
R1
22Ω 1/16W
4.7KΩ 1/16W
STH_B
R2
22Ω 1/16W
STH_F
3.3V
DDC_WP
R187
22KΩ 1/16W
Q11
PMBS3904
C158
0.1uF/16V
5V
GND
GND
TP84
TP86
DVI_DET
VGA_DET
PWR_EN
BL_EN
BL_BRIGHT
SW5_MENU
SW4_VOL+
PWR
5V
LEDG
LEDB
TP80
TP77
TP85
R25
15KΩ 1/16W
AMP_MUTE
AMP_STBY
1
2
3
4
C43
C44
NC
NC
GND
GND
GND
H12
H13
L2
L3
80ohm
80ohm
GND
GND
H1
H2
H3
H4
H5
H6
H7
H8
5V
Q12
LEDG
R191
47Ω 1/16W
PWR_LEDG
PMBS3906
5V
Q13
LEDB
R198
47Ω 1/16W
PWR_LEDB
PMBS3906
5V
R534
NC
R535
220KΩ 1/16W
VOLUME
R536
4.7KΩ 1/16W
Q14
C160
PMBS3904
0.1uF/16V
GND
GND
ViewSonic Corporation
Model
Title
Date
Rev:

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