NAD Surround Sound Preamp Processor S 170i, Service Manual

Page: 22 / 56

9
11
OSD Switching
NAD S1
7
0
2.2b
17-May-2002
13:22:33
Title
Size:
Project:
Date: File: Revision:
Sheet
of
Time:
A3
Author:
3 2
1
8 4
IC11A
OPA2652
4 IO
11
3 IO
8
2 IO
4
1 IO
1
1C
13
2C
5
3C
6
4C
12
4 OI
10
3 OI
9
2 OI
3
1 OI
2
GND
7
VCC
14
IC7 74HC4066
OSD_C_UNBUF
OSD_Y_UNBUF
3 2
1
8 4
IC14A OPA2652
5 6
7
IC14B OPA2652
+5A
-5A
R98 220k
R108 220k
R87 4k7
R86 4k7
R88 1k
+5A
-5A
CsVID_2_OUT
+5A
C28 100nF
+5D
CsVIDEO_TO_OUTBUF
SVIDEO_Y_TO_OUTBUF SVIDEO_C_TO_OUTBUF
SVID_2_OUT
OSD Output Buffering And Switching
SVideo to Composite conversion
D13
D16
VREF
VREF
5 6
7
IC11B OPA2652
+5A -5A
C79 100nF C78 100nF
C80 Not installed C77 Not installed R89 Not installed
Note 1
Note 1
R35 470k
R31 470k
-5A
-5A
R96 Not installed
C65 Not installed
Note 1
R95 25R
R109 25R
C61 100nF
C62 100nF
R55 470k
R52 470k
R17 470k VREF
C44 100uF C51 100uF
C107 100uF
C106 2u2
C45 100uF
C42 100uF
C39 2u2
C64 100uF
4 IO
11
3 IO
8
2 IO
4
1 IO
1
1C
13
2C
5
3C
6
4C
12
4 OI
10
3 OI
9
2 OI
3
1 OI
2
GND
7
VCC
14
IC22 74HC4066
4 IO
11
3 IO
8
2 IO
4
1 IO
1
1C
13
2C
5
3C
6
4C
12
4 OI
10
3 OI
9
2 OI
3
1 OI
2
GND
7
VCC
14
IC2 74HC4066
+5A
C127 100nF
OSD_Y_IN
CsVIDEO_SW_OUT SVIDEO_Y_SW_OUT SVIDEO_C_SW_OUT
CsVIDEO2OSD
+5A
C13 100nF
BYPASS_SVIDEO
SVIDEO_Y_TO_OUTBUF
SVIDEO_C_TO_OUTBUF
CsVIDEO_TO_OUTBUF
BYPASS_CsVIDEO
OSD bypass
Video Signal Routing to OSD
SVID/CsVIDEO2OSD
R181 470k
R180 470k
VREF
Cs->SV_2_OUT
R200 1k
R272 Not installed
C240 Not installed
R294 75R
BYPASS_OSD_C
OSD_CHROMA
XILINX_1
OSD_C_OUT
OSD_C_UNBUF
R155 470k
R268 75R
R264 75R
R117 Not installed
MAX_NC
R286 470k
R282 25R
R296 10k
R287 470k
D57
VREF
C244 2u2
-5A
MAX_NC_BUF
SVID_TO_Cs
SVID_TO_Cs
MAX_NC_BUF
D15
VREF
R39 470k
-5A
C243
2u2
OSD_C_UNBUF_2
OSD_C_UNBUF_2
BYPASS_OSD_C