NEC MultiSync LCD1970NX Service Manual page 100

MODEL LCD1970NX(B)/(C) SCHEMATIC DIAGRAM MAIN BOARD (Scaler) (2/4)
+3.3V
B409
MCB1608S121G
1 2
C422
+ C421
22u 0.1uF
10V
ADC_GND
+1.8V 1.8V_AVDD
B411
MCB1608S121G
1 2
C436
+ C435
22u
0.1uF
10V
+1.8V ADC_GND
B414
MCB1608S121G
1 2
C445
+ C444
22u 0.1uF
10V
+3.3V GND
B415
MCB1608S121G
1 2
C455
+ C454
22u
0.1uF
10V
GND
+3.3V
B416
MCB1608S121G
1 2
C461
+ C460
22u
10V 0.1uF
LVDS_GND
R491 0
ADC_GND TMDS_GND
B433
WBR6H-3T-R7K-B5
1 2
TMDS_GND GND
B438
MCB1608S121G
1 2
TMDS_GND GND
B434
WBR6H-3T-R7K-B5
1 2
ADC_GND GND
B435
WBR6H-3T-R7K-B5
1 2
ADC_GND GND
R433 is the switch for using SPI ROM or external Flash ROM.
If you want to use SPI ROM, Please install R433
If you want to use external flash ROM, please use default.
+3.3V
3.3V_AVDD
B436
MCB1608S121G
1 2
C423 C424 C425 C427 C428
+ C426
0.1uF 0.1uF 0.1uF 22u 0.1uF 0.1uF
10V
+1.8V 1.8V_TMDS
B412
MCB1608S121G
1 2
C438 C439 C440 C441
+ C437
22u
0.1uF 0.1uF 0.1uF 0.1uF
10V
TMDS_GND
CVDD_1.8
Close to respective power Pins
C446 C447 C448 C449 C450 C451
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
S403
3.3V_DVDD
Close to respective power Pins
S4BPH_J
C456 C457 C458 C459
0.1uF 0.1uF 0.1uF 0.1uF
3.3V_DVDD
U410
NC
B442
2
VCC
MCB1608S121G
1 1 2
RSTN
3.3V_LVDS C510 C506
3
GND
0.1u
SOT23_3P 16V
0.01uF
C462 C463 C464 C465
GND GND
0.1uF 0.1uF 0.1uF 0.1uF
+5V
DO NOT STUFF
R410 10K RMADDR0
R411 10K RMADDR1
R412 10K RMADDR2
ROM_CSn R413 NC ROM_SCSn
RMADDR15 R414 NC ROM_SDO
R416 10K RMADDR3 GPIO7/IRQin R417 NC ROM_WP#
R420 10K RMADDR4
R421 10K RMADDR5
R422 10K RMADDR6 GND
R423 NC RMADDR7
R424 NC RMADDR8
R425 NC RMADDR9
R426 NC RMADDR10
R427 NC RMADDR11
R428 10K RMADDR12
R430 NC RMADDR13
R432 NC RMADDR14
R433 NC RMADDR15 BOOTSTRAPS - STUFF ONLY
- R428, ROM_ADDR12, so "DDC2Bi
defaults to DDC_VGA".
R435 NC RMADDR16
R436 NC RMADDR17
DO NOT STUFF RMADDR[0..17]
3.3V_TMDS +3.3V 3.3V_PLL
B410
MCB1608S121G
1 2
C429 C430 C431 C433
+ C432
0.1uF 0.1uF 0.1uF 1u 0.01uF
50V
TMDS_GND GND
+1.8V
B413 1.8V_PLL
MCB1608S121G
1 2
3.3V_LBAD 3.3V_PLL
C443
+ C442
1u
0.01uF
50V
+5V
GND
TMDS_GND
3.3V_PLL
ADC_GND
1
HOST_SDA/UART_DO
2
HOST_SCL/UART_DI C452 C453
3
4
5.6pF X401 5.6pF
14.318MHz
GND
HOST_SCL/UART_DI
HOST_SDA/UART_DO
DDC_SCL_VGA
3 DDC_SCL_VGA
DDC_SDA_VGA
3 DDC_SDA_VGA
DDC_SCL_DVI
3 DDC_SCL_DVI
DDC_SDA_DVI
3 DDC_SDA_DVI
3 BLUE+
3 BLUE-
3 SOG_MCSS
3 GREEN+
3 GREEN-
3 RED+
3 RED-
3 HSYNC
3 VSYNC
ADC_TEST
RX2+
3 RX2+
RX2-
3 RX2-
RX1+
3 RX1+
RX1-
3 RX1-
RX0+
3 RX0+
RX0-
3 RX0-
RXC+
3 RXC+
RXC-
3 RXC-
3.3V_TMDS
R409
+3.3V
U404
1 8
CE# VCC
ROM_HOLD# R415 NC GPIO8/IRQout
2 7
SO HOLD#
3 6 ROM_SCLK R418 NC RMADDR17
WP# SCK
4 5 ROM_SDI R419 NC RMADDR16
VSS SI
NC/SST25VF010 C466
NC
GND
RMADDR[0..17]
+5V
U405
RMADDR17
30 32
NC/A17 VCC
RMADDR16
2
A16
RMADDR15 3 24 GND
A15 OE
RMADDR14 29 31
A14 WE
RMADDR13 28
A13
RMADDR12 4 22
A12 CE
RMADDR11 25
A11
RMADDR10 23
A10
RMADDR9 26
A9
RMADDR8 27 21 RMDATA7
A8 DQ7
RMADDR7 5 20 RMDATA6
A7 DQ6
RMADDR6 RMDATA5
6 19
A6 DQ5
RMADDR5 RMDATA4
7 18
A5 DQ4
RMADDR4 RMDATA3
8 17
A4 DQ3
RMADDR3 RMDATA2
9 15
A3 DQ2
RMADDR2 RMDATA1
10 14
A2 DQ1
RMADDR1 RMDATA0
11 13
A1 DQ0
RMADDR0
12
A0
TP3
1
NC
16
GND
AT49F010-45JC
32-Pin PLCC Socket GND
10-2
1.8V_AVDD
3.3V_DVDD 1.8V_TMDS 1.8V_PLL CVDD_1.8 3.3V_LVDS
3.3V_TMDS
U403
3.3V_AVDD
113
AVDD_IMB_3.3
120
AVDD_RX2_3.3
125
AVDD_RX1_3.3
130
AVDD_RX0_3.3
134
AVDD_RXC_3.3
141
AVDD_BLUE_3.3
3.3V_A
145
AVDD_GREEN_3.3
150
AVDD_RED_3.3
154
AVDD_ADC_3.3
172
LBADC_VDD_3.3
171
AVDD_RPLL_3.3
115
AGND_IMB
117
AGND_RX2
122
AGND_RX1
127
AGND_RX0
131
AGND_RXC
136
GND_RXPLL
AGND
144
AGND_BLUE
149
AGND_GREEN
153
AGND_RED
156
AGND_ADC
163
GND_ADC
165
GND_RPLL
168
AGND_RPLL
177
LBADC_GND
GND
TCLK 170
TCLK
XTAL 169
XTAL
71
HOST_SCL/UART_DI
72
HOST_SDA/UART_DO
77
DDC_SCL_VGA
78
DDC_SDA_VGA
79
DDC_SCL_DVI
80
DDC_SDA_DVI
178
RESETn
142
BLUE+
143
BLUE-
146
SOG_MCSS
147
GREEN+
148
GREEN-
151
RED+
152
RED-
181
HSYNC/CSYNC
182
VSYNC
TP1
155
RESERVED
118
RX2+
119
RX2-
123
RX1+
124
RX1-
128
RX0+
129
RX0-
132
RXC+ GPIO9/NVRAM_SCL
133
RXC- GPIO10/NVRAM_SDA
TP2
138
CLKOUT GPIO11/PWM0
GPIO12/PWM1
250R 1%
114
REXT GPIO13/PWM2
GPIO14/PWM3
RMADDR17
183
ROM_ADDR17
RMADDR16
184
ROM_ADDR16
RMADDR15
185
ROM_ADDR15
RMADDR14
186
ROM_ADDR14
RMADDR13
187
ROM_ADDR13
RMADDR12
188
ROM_ADDR12
RMADDR11
189
ROM_ADDR11
RMADDR10
192
ROM_ADDR10
RMADDR9
193
ROM_ADDR9
RMADDR8
194
ROM_ADDR8
RMADDR7
195
ROM_ADDR7
RMADDR6
196
ROM_ADDR6
RMADDR5 197
ROM_ADDR5
RMADDR4 198
ROM_ADDR4
RMADDR3 199
ROM_ADDR3
RMADDR2 200
ROM_ADDR2
RMADDR1 201
ROM_ADDR1
RMADDR0 202
ROM_ADDR0
RMDATA7 203
ROM_DATA7
RMDATA6 204
ROM_DATA6
RMDATA5
207
ROM_DATA5
RMDATA4
208
ROM_DATA4
RMDATA3
1
ROM_DATA3
RMDATA2
2
ROM_DATA2
RMDATA1
3
ROM_DATA1
RMDATA0
4
ROM_DATA0
ROM_OEn
5
ROM_OEn LBADC_RETURN
ROM_WEn
6
ROM_WEn
ROM_CSn
7
ROM_CSn
gm5221
C467 PQFP208P(0.5)
0.1uF +5V
LVDS_GND
R429 10K
R431 10K
WR 3
R434
10K
GND
LV_E[0..9] 1
10
RESERVED
13 LV_E9
CH3P_LV_E
14 LV_E8
CH3N_LV_E
15 LV_E7
CLKP_LV_E
16 LV_E6
CLKN_LV_E
17 LV_E5
CH2P_LV_E
18 LV_E4
CH2N_LV_E
LV_E3
19
CH1P_LV_E
LV_E2
20
CH1N_LV_E
LV_E1
21
CH0P_LV_E
LV_E0
22
CH0N_LV_E LV_O[0..9] 1
LV_O9
29
CH3P_LV_O
LV_O8
30
CH3N_LV_O
LV_O7
31
CLKP_LV_O
LV_O6
32
CLKN_LV_O
LV_O5
33
CH2P_LV_O
LV_O4
34
CH2N_LV_O
LV_O3
35
CH1P_LV_O
LV_O2
36
CH1N_LV_O
LV_O1
37
CH0P_LV_O
LV_O0
38
CH0N_LV_O
43
RESERVED
44
RESERVED
45
RESERVED
46
RESERVED
56
JTAG_RESET
57
RESERVED
58
RESERVED
59
RESERVED
60
RESERVED
61
RESERVED
62
RESERVED
63
RESERVED
64
JTAG_TDO
65
RESERVED
66
JTAG_TDI
47
RESERVED
48
RESERVED
49
RESERVED
55
RESERVED
PPWR
67
PPWR 1
PPWR
PBIAS
68
PBIAS 1
PBIAS
GPIO0
81
GPIO0 POWER_ON 4
GPIO1
82
GPIO1 LED_AMBER 4
83 GPIO2
GPIO2 LED_GREEN 4
84 GPIO3
GPIO3 PLUS 4
85 GPIO4
GPIO4 SELECT 4
88 GPIO5
GPIO5 RESET 4
89 GPIO6
GPIO6 MINUS 4
90 GPIO7/IRQin
GPIO7
91 GPIO8/IRQout
GPIO8
92 GPIO9/SCL
SCL 4
93 GPIO10/SDA
SDA 4
98
PWM0 1
99
MUTE 1
100
RIGHT 4
101
LEFT 4
69
MENU 4
GPIO15
167
RESERVED
135
RESERVED
70
RESERVED
206
CRVSS
191
CRVSS
180
CRVSS
+3.3V 3.3V_LBAD
140
CRVSS
97
CRVSS
94 B437
CRVSS
76 MCB1608S121G
CRVSS
74 1 2
CRVSS
51
CRVSS
42 C434
CRVSS
8
CRVSS
87 0.1uF
CRVSS
GND
GND
173
LBADC_IN1
174
LBADC_IN2
175
LBADC_IN3
176
GND