NEC MultiSync 20WGX2 Service Manual page 139

2 2
MODEL LCD 20WGX MODEL LCD 20WGX SCHEMATIC DIAGRAM - SCHEMATIC
A3963WV2-A3P A3963WV2-A3P
P801 P801 C806 C806
F801 F801
1 1
0.47U/275V 0.47U/275V
L L
T802 T802
3.15AH250V 3.15AH250V
ET-24 ET-24
3 3
C802 C802
3 3 4 4
G G
1000P/250V 1000P/250V
R802 R802
C803 C803
2 2
1M 1M
0.47U/275V 0.47U/275V
N N 1/4W 1/4W
MGF MGF C808 C808
1 1 2 2
G801 G801 1000P/250V 1000P/250V
CON3 CON3
GND GND
10K 1/2W 10K 1/2W
A A C C K K I I N N G G S S E E C C I I F F I I C C A A I I O O N N
A A B B L L E E O O F F C C O O N N E E N N S S
B B ersion ersion ......................................................................................................................................... ......................................................................................................................................... 1 1 1- 1-2 2
DIAGRAM - Power Power (5/5) (5/5)
L801 L801
R801 R801
T803 T803
SCK105 SCK105
280uH 280uH
RING CHOHE RING CHOHE
D802 D802
1 1 2 2
GBU4K GBU4K R821 R821
2 2 1M 1M
C856 C856
3 3 4 4
RM1206 RM1206
C832 C832 1uF/450V 1uF/450V
MEF/P15 MEF/P15
4700P 1KV 4700P 1KV
1 1 4 4
+ +
- -
X7R X7R
C855 C855
R867 R867
1uF/450V 1uF/450V ZD804 ZD804
1 1 2 2 1M 1M
MEF/P15 MEF/P15
22B 22B
RM1206 RM1206
C830 C830
4700P 1KV 4700P 1KV
3 3
X7R X7R
C805 C805
1000P/250V 1000P/250V
C817 C817
R822 R822
C836 C836 1000P/250V 1000P/250V
1000P 0805 1000P 0805
18K 0805 18K 0805
X7R X7R
R852 R852
33 33
R824 R824
2M 2M
1/4W 1/4W
MGF MGF
R825 R825
649K-F 649K-F
0805 0805
1/10W 1/10W
VCC VCC
Q808 Q808
A733 A733
1 1
3 3
1 1
+ +
2 2
C835 C835
R856 R856
1uF/50V 1uF/50V
2 2
100K 100K
R827 R827 R853 R853
I813 I813
10K 10K
R833 R833
LTV817 LTV817
RM 0805 RM 0805
4 4 1 1 470 470
3 3
C862 C862
Q805 Q805 3 3 2 2
2 2 0.1 0805 0.1 0805
C945 C945
X7R X7R
R854 R854
1 1
100K 100K
2 2
RM0805 RM0805
D881 D881
1N4148 1N4148
1 1
R881 R881
2M 2M
Q881 Q881
1 1
1/4W 1/4W
BT169 BT169 ZD881 ZD881
MGF MGF
27C 27C
2 2
3 3 R883 R883 R882 R882
C881 C881
200K-F 200K-F 127K-F 127K-F
0.47U/50VK 0.47U/50VK
0805 0805 0805 0805
X7R 1206 X7R 1206
1/10W 1/10W 1/10W 1/10W
10uF/50V 10uF/50V
I808 I808
3 3 7 7
5 5 8 8
SG6841 SG6841
4 4
6 6
1 1 2 2
R835 R835
30.1K 1% 30.1K 1%
0805 1/10W 0805 1/10W
C852 C852
1000P 0805 1000P 0805
NPO NPO
ER2819 ER2819 D807 D807
5 5
4 4 6 6
ER306 ER306
Q803 Q803
0 0 R806 R806
1 1 FQPF13N50C FQPF13N50C + +
1 1 1M 1M
C801 C801 C816 C816
R817 R817 2 2 1/4W 1/4W
150U/450V 150U/450V
4700P 1KV 4700P 1KV
D808 D808
56K 0805 56K 0805 R812 R812 1 1 2 2 MGF MGF
X7R X7R
1 1
C822 C822
15 MOF 15 MOF
1N4148 1N4148
470P 470P
I809 I809
1KV X7R 1KV X7R
R851 47 MOF R851 47 MOF 3 3
R866 R866
5 5 7 7
8 8 4 4
L6562 L6562 470 0805 470 0805
R809 R809
R810 R810
3 3 1 1
C864 C864 10.7K-MF 10.7K-MF
6 6 2 2 0.27/2W 0.27/2W
1 1
1000P 0805 1000P 0805 0805 0805
R855 R855 C818 C818
+ + X7R X7R 1/8W 1/8W
C812 C812
1uF 0805 1uF 0805
20K 20K
10uF/50V 10uF/50V
0805 0805 16V X7R-K 16V X7R-K
2 2
1/8W 1/8W
C823 C823
0.22uF 0805 0.22uF 0805
16V X7R 16V X7R
R807 R807
R811 R811
16K 1% 16K 1% 1 1
3.3 3.3
0805 0805
1/8W 1/8W + +
C807 C807
10uF/50V 10uF/50V
2 2
2 2 I801 I801
ZD803 ZD803
27C 27C 3 3 7 7
1 1 Q804 Q804
5 5 8 8
2N7002 2N7002 SG6841 SG6841
4 4 6 6
C831 C831 1 1 2 2
R826 R826 3 3
0.47U/50VK 0.47U/50VK
200K-MF 200K-MF
X7R 1206 X7R 1206
0805 0805
1/10W 1/10W
C813 C813
R808 R808
1000P 0805 1000P 0805
29.4K 1% 29.4K 1%
NPO NPO
RM0805 RM0805
D812 D812 T806 T806
C854 C854 P6KE180A P6KE180A ER2834 ER2834 3 3
3 3 L806 L806
12 12
0.01U/1KV 0.01U/1KV D815 D815
ER1002FCT ER1002FCT
BEAD/6mm BEAD/6mm
1 1
D814 D814
2 2
PG108R PG108R
C828 C828
R834 R834 CUT CUT 7,11 7,11
CUT CUT
1000P 1000P
2M 2M
500VX7R 500VX7R
1/4W 1/4W
MGF MGF
1 1 10 10
D813 D813
1 1 2 2 5 5
9 9
ER104 ER104
L802 L802
6 6 8 8
L810 L810 BEAD/6mm BEAD/6mm
1 1
4.7uH 4.7uH
+ +
ZD802 ZD802
C853 C853 3 3
D816 D816
R857 R857 1 1 2 2 2 2
30D 30D
D817 D817 2 2
2 2 C850 C850 FCQ20A06 FCQ20A06
22 MOF 22 MOF
1N4148 1N4148 1 1
Q802 Q802 100P 100P
R838 R838 1KV X7R 1KV X7R
1 1
FQPF8N80C FQPF8N80C
100 MOF 100 MOF 3 3
R839 R839
C849 C849
200 MOF 200 MOF + +
1000P 1000P
C845 C845
R840 R840
100VX7R 100VX7R
C851 C851 1000U/16V 1000U/16V
0.39/2W 0.39/2W
220P 0805 220P 0805 I807 I807
R841 R841
LTV817 LTV817
X7R X7R 270 0805 270 0805
4 4 1 1
R842 R842
3 3 2 2 1K 0805 1K 0805
C847 C847 R843 R843 R845 R845
33K 1% 33K 1%
0.01U 0805 0.01U 0805 1K 0805 1K 0805 RM0805 RM0805
2 2
X7R X7R
C C
+ + 3 3
C848 C848
R R
4.7U/50V 4.7U/50V A A I806 I806
R846 R846
1 1 AP431 1% AP431 1%
26.1K 1% 26.1K 1%
RM0805 RM0805
VR801 VR801
10K 10K
10-5 10-5
R868 R868
3 3
470U/35V 470U/35V
D805 D805 2 2
0.22 1W 0.22 1W
ER1004FCT ER1004FCT
T801 T801
C804 C804
D801 D801 ER2834 ER2834 1 1
3 3 12 12
0.01U/1KV 0.01U/1KV C829 C829
P6KE180A P6KE180A
1000P 1000P
500VX7R 500VX7R
D804 D804
2 2
PG108R PG108R
CUT CUT
11 11
1 1 7,10 7,10
CUT CUT
D861 D861
R862 R862
1 1 2 2 5 5
9 9
1 1
ER104 ER104 47 47
+ +
R861 R861
C861 C861
20K 20K
6 6 8 8
10uF/50V 10uF/50V
2 2
L804 L804
BEAD/6mm BEAD/6mm
D806 D806
R814 R814
1 1 2 2
2 2
ZD801 ZD801
22 MOF 22 MOF
24B 24B 1N4148 1N4148
C810 C810
Q801 Q801
1 1
100P 100P
FQPF8N80C FQPF8N80C
R805 R805 1KVX7R 1KVX7R
100 MOF 100 MOF 3 3
R815 R815
200 MOF 200 MOF
R813 R813
0.39/2W 0.39/2W
C809 C809
220P 0805 220P 0805
X7R X7R
I802 I802
R816 R816
LTV817 LTV817
1.2K 0805 1.2K 0805
4 4 1 1
3 3 2 2 R819 R819
1K 0805 1K 0805
R818 R818
C819 C819 R820 R820 56.2K 1% 56.2K 1%
0.01U 0805 0.01U 0805
1K 0805 1K 0805
2 2
X7R X7R
C C
+ + 3 3
C820 C820
R R
4.7U/50V 4.7U/50V A A I803 I803
1 1 AP431 1% AP431 1% R823 R823
6.49K 1% 6.49K 1%
RM0805 RM0805
2 2
+ +
C842 C842
1000U/25V 1000U/25V
I804 I804
KA78R12 KA78R12
1 2 3 1 2 3 4 4
1 2 3 1 2 3 4 4
+ + R848 R848
C857 C857 10K 10K
1000U/16V 1000U/16V
RM0805 RM0805
L803 L803 + +
C843 C843
5.4UH 5.4UH 100U/25V 100U/25V
+ +
C846 C846
1000U/16V 1000U/16V
C811 C811 C814 C814
470U/35V 470U/35V +24V +24V
+ + + +
P802 P802
TO INV TO INV
1 1 24V 24V
24V 24V
2 2
3 3 24V 24V
4 4 GND GND
5 5 GND GND
6 6 GND GND
7 7 GND GND
8 8 ON-OFF ON-OFF
9 9 BRI BRI
2.0 2.0
P803 P803
1 1 ON-OFF ON-OFF
2 2 BRI BRI
12V 12V
3 3
12V 12V
12V 12V
4 4
5 5 GND GND
GND GND
6 6
7 7 GND GND
8 8 GND GND
9 9 5.1V 5.1V
10 10 5.1V 5.1V
11 11 5.1V 5.1V
12 12 P-S P-S
13 13 MUTE MUTE
2.5 2.5
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