ViewSonic VA712b-1 Service Manual page 75

SCALER
0603/100n/25V/Y 0603/100n/25V/Y
V33C
MHC2012S420R MHC2012S420R
L30 L30
0603/100n/25V/Y 0603/100n/25V/Y
V33C
C103 C103 C109 C109 C110 C110 C111 C111 C112 C112
1206/22u/10V/Y 1206/22u/10V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
V33C
L31 L31
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
MHC2012S420R MHC2012S420R
C116 C116 C118 C118 C119 C119 C120 C120 C121 C121 C122 C122
1206/22u/10V/Y 1206/22u/10V/Y 0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
V25V
L32 L32
MHC2012S420R MHC2012S420R
V25V
C500 C500 + + C130 C130 C131 C131 C132 C132
OPEN OPEN 1206/22u/10V/Y 1206/22u/10V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
V25V
2_5V_PLL
L33 L33 2_5V_PLL1 2_5V_PLL1
MHC2012S420R MHC2012S420R 1
TP
C142 C142 C143 C143
TP TP
1206/22u/10V/Y 1206/22u/10V/Y
0603/100n/25V/Y 0603/100n/25V/Y
Reset U10 U10
Circuit
5
CD
C150 C150
4
NC
0603/10n/25V/7/RoHS 0603/10n/25V/7/RoHS
V5A
0603/2.7K/5% 0603/2.7K/5% RN5VD26AA-TR RN5VD26AA-TR
V5A
R78 R78 R79 R79
NVRAM
U11 U11
1 8 0603/2.7K/5% 0603/2.7K/5%
A0 VCC
2 7
A1 WP
3 6 NVRAM_SCL
A2 SCK
NVRAM_SDA
4 5
VSS SI
AT24C16AN AT24C16AN
RMADDR[0..15]
RMADDR0
RMADDR1
RMADDR2
RMADDR3
RMADDR4
RMADDR5
RMADDR6
RMADDR7
RMADDR8
RMADDR9
RMADDR10
RMADDR11
RMADDR12
RMADDR13
RMADDR14
RMADDR15
V5A
R122 R122
0603/4.7K/5% 0603/4.7K/5%
1
Q5 Q5
2N7002/RoHS 2N7002/RoHS Q7 Q7 BSS84 BSS84 2N7002/RoHS 2N7002/RoHS
R124 R124
LED_OI 1
LED_O LED_GI
1
0603/510R/5% 0603/510R/5%
ViewSonic Corporation
3_3V_DVDD
3_3V_DVDD1 3_3V_DVDD1
1
TP
C113 C113 C114 C114 C115 C115
TP TP
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
3_3V_AVDD
3_3V_AVDD1 3_3V_AVDD1
0603/100n/25V/Y 0603/100n/25V/Y
1
TP
C123 C123 C124 C124 C125 C125 C126 C126 C127 C127 C128 C128 C129 C129
TP TP
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
C133 C133 C134 C134 C135 C135 C136 C136 C137 C137 C138 C138 C139 C139 C104 C104 C105 C105
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y
3_3V_AVDD 3_3V_AVDD
C140 C140
X1 X1
0603/5p/50V/N 0603/5p/50V/N
14.31818MHz 14.31818MHz
3_3V_DVDD
XAO
0603/0R/5% 0603/0R/5% R121 R121
/RESET1 /RESET1
TP TP
0603/100n/25V/Y 0603/100n/25V/Y
0603/4.7K/5% 0603/4.7K/5%
2
VCC
/RESET
1
RSTN
3
GND
R80 R80
0603/0R/5% 0603/0R/5%
V5A
0603/10K/5% 0603/10K/5%
R90 R90
A16
RMADDR15
3_3V_DVDD RMADDR14
RMADDR13
R95 R95 OPEN OPEN RMADDR12
R96 R96 OPEN OPEN RMADDR11
R97 R97 OPEN OPEN RMADDR10
R98 R98 RMADDR9
OPEN OPEN
R99 R99 RMADDR8
OPEN OPEN
R100 R100 RMADDR7
OPEN OPEN
R101 R101 OPEN OPEN V5A RMADDR6
R103 R103 OPEN OPEN RMADDR5
R105 R105 0603/10K/5% 0603/10K/5% RMADDR4
R106 R106 0603/10K/5% 0603/10K/5% R108 R108 RMADDR3
R107 R107 OPEN OPEN RMADDR2
R109 R109 OPEN OPEN RMADDR1
R110 R110 OPEN OPEN 0603/10K/5% 0603/10K/5% RMADDR0
R111 R111
OPEN OPEN
R112 R112
0603/10K/5% 0603/10K/5%
R113 R113
OPEN OPEN
R114 R114
V5A
FLASH_OEn
0603/10K/5% 0603/10K/5%
R123 R123
0603/4.7K/5% 0603/4.7K/5%
1
Q6 Q6
Q8 Q8
BSS84 BSS84
R125 R125
0603/100n/25V/Y 0603/100n/25V/Y
LED_G
0603/510R/5% 0603/510R/5%
Confidential - Do Not Copy VA712-1_VA712b-1
72
3_3V_AVDD
U9 U9
164
AVDD_SDDS
169
AVDD_DDDS
173
AVDD_RPLL
112
AVDD_IMB
120
AVDD_RX2
126
AVDD_RX1
132
AVDD_RX0
135
AVDD_RXC
141
AVDD_BLUE
145
AVDD_GREEN
149
AVDD_RED
153
AVDD_ADC
2_5V_PLL
2_5V_VDD
2_5V_VDD1 2_5V_VDD1
138
1
VDD_RXPLL_2.5
TP
C106 C106 C107 C107 C108 C108
TP TP 114
AGND_IMB
0603/100n/25V/Y 0603/100n/25V/Y 117
AGND_RX2
123
AGND_RX1
129
AGND_RX0
136
AGND_RXC
137
GND_RXPLL
156
SGND_ADC
155
AGND_ADC
144
AGND_BLUE
148
AGND_GREEN
152
AGND_RED
172
AVSS_RPLL
168
AVSS_DDDS
163
AVSS_SDDS
C141 C141
0603/5p/50V/N 0603/5p/50V/N 0603/1K/1% 0603/1K/1%
PANEL_ON/OFF R117 R117 78
PPWR
INV_ON/OFF R73 R73
79
PBIAS
0603/1K/1% 0603/1K/1%
TCLK
175
TCLK
XTAL
174
XTAL
0603/4.7K/5% 0603/4.7K/5%
90
GPIO20/HDATA3
KEY_DOWN R74 R74
91
GPIO19/HDATA2
A16 92
GPIO18/HDATA1
0603/4.7K/5% 0603/4.7K/5% SOURCE_SELECT R75 R75 93
GPIO17/HDATA0
0603/4.7K/5% 0603/4.7K/5% AUTO_ADJ R76 R76 89
GPIO16/HFS
MENU R77 R77
88
GPIO22/HCLK
0603/4.7K/5% 0603/4.7K/5%
108
DDC_SCL GPIO14/DDC_SCL
109
DDC_SDA
GPIO15/DDC_SDA
/RESET
107
RESETn
81
GPIO11/ROM_WEn
150
RED+ RED+
151
RED- RED-
146
GREEN+ GREEN+
147
GREEN- GREEN-
142
BLUE+ BLUE+
143
BLUE-
BLUE-
176
HSYNC
HSYNC
177
VSYNC
VSYNC
154
ADC_TEST
133
RXC+ RXC+
134
RXC- RXC-
118
RX2+ RX2+
119
RX2- RX2-
124
RX1+
RX1+
125
RX1-
RX1-
130
RX0+
RX0+
131
RX0-
RX0-
3_3V_AVDD
0603/1K/1% 0603/1K/1%
R85 R85 113
REXT
RMADDR15
180
ROM_ADDR15
U12 U12 F29C51001T-90J F29C51001T-90J RMADDR14
181
ROM_ADDR14
RMADDR13
182
ROM_ADDR13
RMADDR12
31 183
WE ROM_ADDR12
RMADDR11
184
ROM_ADDR11
RMADDR10
30 187
NC/A17 ROM_ADDR10
RMADDR9
2 188
A16 ROM_ADDR9
3 RMADDR8 189
A15 ROM_ADDR8
29 21 RMDATA7
A14 DQ7
RMDATA6 RMADDR7
28 20 190
A13 DQ6 ROM_ADDR7
RMDATA5 RMADDR6
4 19 191
A12 DQ5 ROM_ADDR6
RMDATA4 RMADDR5
25 18 192
A11 DQ4 ROM_ADDR5
RMDATA3 RMADDR4
23 17 193
A10 DQ3 ROM_ADDR4
RMDATA2 RMADDR3
26 15 194
A9 DQ2 ROM_ADDR3
RMDATA1 RMADDR2
27 14 195
A8 DQ1 ROM_ADDR2
RMDATA0 RMADDR1
5 13 196
A7 DQ0 ROM_ADDR1
6 RMADDR0 197
A6 ROM_ADDR0
7
A5
8 RMDATA7 200
A4 ROM_DATA7
RMDATA6
9 201
A3 ROM_DATA6
RMDATA5
10 202
A2 ROM_DATA5
V5A RMDATA4
11 203
A1 ROM_DATA4
RMDATA3
12 1 204
A0 NC ROM_DATA3
RMDATA2
205
ROM_DATA2
RMDATA1
24 32 206
OE VCC ROM_DATA1
RMDATA0
22 16 207
CE GND ROM_DATA0
32-Pin PLCC Socket 208
ROM_OEn
V5A
C146 C146 C147 C147
0603/100n/25V/Y 0603/100n/25V/Y
3_3V_DVDD 2_5V_VDD
68
OCH11P_RS
67
OCH11N_RS
ER0N
66
OCH10P_RS
3.3V_A 3.3V_A ER0P
65
OCH10N_RS
ER1N
64
OCH9P_RS
ER1P
63
OCH9N_RS
ER2N
62
OCH8P_RS
ER2P
61
OCH8N_RS
58
OCH7P_RS
57
OCH7N_RS
EG0N
56
OCH6P_RS
EG0P
55
OCH6N_RS
EG1N
54
OCH5P_RS
EG1P
53
OCH5N_RS
EG2N
52
OCH4P_RS
EG2P
51
OCH4N_RS
50 ECLKN
AGND AGND OCLKP_RS
49 ECLKP
OCLKN_RS
46
OCH3P_RS
45
OCH3N_RS
EB0N
44
OCH2P_RS
EB0P
43
OCH2N_RS
EB1N
42
OCH1P_RS
EB1P
41
OCH1N_RS
EB2N
40
OCH0P_RS
39 EB2P
OCH0N_RS
34
ECH11P_RS
33
ECH11N_RS
OR0N
32
ECH10P_RS
OR0P
31
ECH10N_RS
OR1N
30
ECH9P_RS
OR1P
29
ECH9N_RS
OR2N
28
ECH8P_RS
27 OR2P
ECH8N_RS
24
ECH7P_RS
23
ECH7N_RS
OG0N
22
ECH6P_RS
OG0P
21
ECH6N_RS
OG1N
20
ECH5P_RS
OG1P
19
ECH5N_RS
OG2N
gm5126 gm5126 18
ECH4P_RS
OG2P
17
ECH4N_RS
16 OCLKN
ECLKP_RS
15 OCLKP
ECLKN_RS
12
ECH3P_RS
11
ECH3N_RS
OB0N
10
ECH2P_RS
OB0P
9
ECH2N_RS
OB1N
8
ECH1P_RS
OB1P
7
ECH1N_RS
6 OB2N
ECH0P_RS
5 OB2P
ECH0N_RS
0603/47R/5% 0603/47R/5%
R81 R81
69
TCON_OSP
71
TCON_OPOL
0603/100R/5% 0603/100R/5%
70
TCON_OINV
R82 R82
4
DHS/TCON_LP
R83 R83
3
TCON_EPOL
2 0603/47R/5% 0603/47R/5%
TCON_EINV
R84 R84
1
TCON_ESP
0603/47R/5% 0603/47R/5%
72 R86 R86
TCON_RSP2
0603/47R/5% 0603/47R/5%
73
TCON_RSP3
R87 R87
74
TCON_RCLK
R88 R88
75
TCON_ROE
R89 R89
80
GPIO10/TCON_ROE3
R91 R91
105
GPIO9/TCON_ROE2
R92 R92
106
GPIO21/TCON_FSYNC
0603/4.7K/5% 0603/4.7K/5%
82
GPIO12/NVRAM_SDA
83
GPIO13/NVRAM_SCL
94 R93 R93
GPIO8/IRQINn
95
GPIO0/PWM0
96
GPIO1/PWM1
97
GPIO2/PWM2
98
GPIO3/TIMER1
103
GPIO6/TCON_SHC
104
GPIO7/TCON_TDIV
0603/100R/5% 0603/100R/5%
99 R102 R102
GPIO4/UART_DI
100 R104 R104
GPIO5/UART_DO
0603/100R/5% 0603/100R/5%
86
Reserved
87
Reserved
139
N/C
165
N/C
140
CLKOUT
VOL_MUTE1 VOL_MUTE1 VOL_ADJ1 VOL_ADJ1
VOL_MUTE VOL_ADJ
1 1
PANEL_ON/OFF1 PANEL_ON/OFF1 3_3V_X 3_3V_X 3_3V_X 3_3V_X
PANEL_ON/OFF 1
3_3V_X 3_3V_X
INV_ON/OFF1 INV_ON/OFF1
INV_ON/OFF
1
3_3V_X VCM_PWM1 VCM_PWM1 3_3V_X
VCM_PWM 1
3_3V_X 3_3V_X
ER0N
ER0P
ER1N
ER1P
ER2N
ER2P
PWR_SW
PWR_SW
LED_G
EG0N LED_G
EG0P
LED_O
EG1N LED_O
EG1P
KEY_UP
EG2N KEY_UP
EG2P
KEY_DOWN
KEY_DOWN
ECLKN
MENU
ECLKP MENU
AUTO_ADJ
AUTO_ADJ
SOURCE_SELECT
EB0N SOURCE_SELECT
EB0P
EB1N
[OSD I/O]
EB1P
EB2N
EB2P
OR0N
OR0P
OR1N
OR1P
VOL_MUTE
OR2N VOL_MUTE
OR2P
PANEL_ON/OFF
PANEL_ON/OFF
INV_ON/OFF
INV_ON/OFF
OG0N
VCM_PWM
OG0P VCM_PWM
OG1N
VOL_ADJ
OG1P VOL_ADJ
OG2N
OG2P
GVON
OCLKN GVON
OCLKP
GVOFF
GVOFF
[CONTROL I/O]
OB0N
OB0P
OB1N
OB1P
OB2N
OB2P
OSTH
OSTH
OSTH
STB
POL STB
STB
ESTH POL
POL
STV ESTH
ESTH
CKV 0603/47R/5% 0603/47R/5% STV
STV
OE 0603/47R/5% 0603/47R/5%
GVOFF 0603/47R/5% 0603/47R/5% CKV
CKV
GVON
0603/47R/5% 0603/47R/5%
PWR_SW OE
OE
NVRAM_SDA
[T-CON OUPUT]
NVRAM_SCL
KEY_UP 0603/4.7K/5% 0603/4.7K/5%
INV_ADJ1
VOL_ADJ
VCM_PWM
VOL_MUTE
LED_GI
LED_OI
RXD
RXD
TXD
TXD