NAD M55 - SCART Circuit Diagram

C865 20PF
C866
20PF
GNDA
GNDA
R876 150R
R875
150R
B-SCART
FB863 FERB
FB862 FERB
FB861 FERB
FB860
FERB
C861
20PF
C862
20PF
C864 20PF
C863
20PF
G-SCART R-SCART
R864 75R
C860
1NF
CVBS-SCART BLANKING
R872 6K8
R867 1K
R868
1K
R866 1K
R871 56K
+12VA
R870
1K
R869 1K
R873 0R
R874
10K
VCC
R865 4K7
16:9 / 4:3 SWITCH
LCH
RCH
MUTE
RGB_N RGB_AV/TV
RGB_S
CVBS
G/Y
R/Cr B/Cb
R860
75R
R861
75R
R862
75R
R863
75R
B-SCART
G-SCART
R-SCART CVBS-SCART
Q863 2SA1015
Q861 2SC1815
Q862
2SC1815
Q860
2SC1815
CVBS RGB_N
RGB_AV/TV RGB_S +12VA VCC GNDV GNDV
G/Y R/Cr
B/Cb LCH
RCH
MUTE
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
JP860
CON16
GNDV GNDA
R877 1K
AV/TV switch
5~8V(16:9 AV)/9.5~12V (4:3 AV)0~2V(TV)
0=AV 1=TV AV MODE: 0=4:3 1=16:9
Composite / RGB input selector
BLANKING: 1~3V=RGB 0~0.4V=CVBS
0=RGB 1=CVBS
AOR
1
AOL
3
AGND
4
BGND
5
AIL
6
B
7
SWTCH
8
GGND
9
CLKOUT
10
G
11
DATA
12
RGND
13
DATAGND
14
R
15
BLNK
16
VGND
17
BLNKGND
18
VOUT
19
VIN
20
SHIELD
21
AIR
2
P860 SCART
GNDA
GNDA
Q866 2SC3326
Q868 2SC3326
R880
4K7
R884 22K
GNDA
GNDA
Q867
2SC3326
Q869 2SC3326
R881 4K7
R885 22K
GNDA
R886 NC
R887 NC
R883 NC
R882 NC
GNDA
GNDA
R878
150R
R879
150R
3-43
11.SCART CIRCUIT DIAGRAM