Onkyo TX-SR875 Service Manual page 12

A B
SCHEMATIC DIAGRAMS-6 (SD-6)
VIDEO SECTION
NAVD-9052
U08 VIDEO PC BOARD
1
COMPONENT VIDEO
R2201 C2201 1/50
Cr/Pr
75
C2202 104Z
Component
75
C2203 1/50
Cb/Pb
3 IN R2202
C2204
104Z
C2205 1/50
Y
C2206 104Z
R2204 C2207 1/50
Cr/Pr
75
C2208 104Z
Component 75
C2209 1/50
Cb/Pb
R2205
2 IN
C2222
C2210
104Z
104Z
C2211 1/50
Y
C2212 104Z
C2223
104Z
WF26
C2224
104Z
2 1/50
C2214
R2207
Cr/Pr
R2223 1K
75 R2222 1K
C2215 104Z
Component
Cb/Pb 75 C2216 1/50 R2216 10K
1 IN
R2208
C2217
104Z
C2218 1/50
Y
C2219 104Z WF24
Cr/Pr
WF26
Component
Cb/Pb
OUT
WF25
Y
WF24
C2221
102K
3
<Note>
Refer to SCHEMATIC DIAGRAM-20 (SD-20)
for video signal waveforms.
S VIDEO
104Z C2001
V4SC
C Y C2002
V4SY
1 4 10/50
AUX1
2 5 C2003
V4CV
10/50
104Z
P2001
C2004 V3SC
C Y C2005 V3SY
8 11 10/50
9 12
C2006 V3CV
GAME/TV 10/50
102K
C2008
V2SC
C2007 104Z
C Y C2009
V2SY
1 4
10/50
CBL/SAT
2 5
C2010
V2CV
10/50
4
75
P2002
R2010
C Y R2011
8 11 75
9 12 R2012
OUT
75
VCR/DVR
102K
C2012
V1SC
C2011 104Z
C Y C2013
IN V1SY
1 4
10/50
2 5
C2014
V1CV
10/50
104Z
P2003
C2016
DVDSC
C Y C2017
DVDSY
8 11
DVD
10/50
9 12
C2018
10/50
P2004 102K R2022 75
C2015 R2023
C Y
4 3 75
MONITOR
R2024
2 1
OUT
75
C2019 102K
5
COMPOSITE VIDEO
C2020
RN1444
102K Q2004
R2028
Z2OUT
75
Q2005
C
R2227
10K
PYOUT1
PBOUT1
PROUT1
DACPY
DACPB
DACPR
+9.0V
1 38
V+ Pb IN4
C2233
2 37
Pb IN2 V+ R2230
1
3 36 104Z CH1 IN1
GND Y IN4 10/50 1K 2
4 C2234
35 SW1
Pr IN2 V+ C2239 3
5 34 104Z CH1 IN2
GND
Q2201 Y OUT1 C2240 R2271 4
6 33 SW2
Y IN1 GND 104Z 10K 5
C2241 10/50
7 32 CH1 IN3
V+ NJW1321 Pb OUT1 6
8 31 GND
Pb IN1
GND 7
9 30 C2242 104Z V+1
VIDEO SW
V+ Pr OUT3 8
10 29 C2243 CH2 IN1
Pr IN1 AUX3 9
10/50
11 28 GND
GND C2244
AUX2 10
12 27 104Z CH2 IN2
PORT3 Y OUT2 11
13 26 GND
PORT2 AUX1 12
14 25 CH2 IN3
ADR
AUX0
220/16
WF25
C2235
104Z
R2219
C2232
2.2
PYDET
SDET
CVDET
+9.0V
C2230
10/50 104Z
100K
R2041
R2038 100K
R2042
R2039 100K 100K
R2040 100K R2043
100K
+5.0V
MAIN V
Z2 V
Q2006 Q2007
74HC4051
74HC4051
-5.0V
CV_M
+5.0V
MAIN Y
Q2009
Q2008
74HC4051
74HC4051
R2029 100K
RN1444
Q2001
C2024 104Z
Q2002 C2025
-5.0V
RN1444
470/6.3
RN1444
C2026
Q2003
470/6.3
LS1
WF23
MAIN C
Z2 C
Q2010
Q2011
74HC4051 74HC4051
WF22
DVDCV
WF21
WF23
WF22
WF21
LS2
RN1444 LS3
D E
Q2204 Q2205
2SK3019 2SK3019
R2233
33
C2245
R2234
104Z 75
R2237 R2238 33
24
CH1 OUT
R2235
23 3.3
PS R2241
22 R2239 33
CH2 OUT
75 3.3 C2262
21
V+2
R2240
20 10/50
CH3 OUT
19 C2263
R2242 3.3
GND
C2249 10/50
18 75
V-2
17 104Z C2264
CH3 IN1
16 10/50
V-1
15 C2265
CH3 IN2
14 10/50
GND R2247
13 RS7 C2266
CH3 IN3
104Z
1K
C2267
Q2206
10/50
NJM2586A
VIDEO AMP
+5.0V
-5.0V
C2248
R2231 2.2
220/6.3
C2246
220/6.3 R2246 2.2
-5.0V
+5.0V
VIDEO AMP
NJM2587 C2061
470/6.3
Q2012
470/6.3
C2062
1 32
SC IN PS1
2 31
NC SC OUT
3 30
V IN GND out
4 29
GND in V OUT
C2047
104Z 5 28
SY IN V+4
C2043 6 27 104Z
V+1
SY OUT
C2044 7 26 C2048
V-1 V-4
104Z 8 25 104Z R2070
Y IN Y OUT
C2045 9 24 C2049
V+2 V+3 10K
104Z 10 23
104Z
GND in Y Cb OUT
11 22
Cb IN
GND out Y
12 21
GND in Cb Cr OUT
13 20
Cr IN GND out Cb
C2046 C2050
14 19
V-2 V-3
104Z 15 18 104Z
GND in Cr GND out Cr
16 17
PS2 NC
1 32
SC IN PS1
2 31 Z2SCOUT
NC SC OUT
3 30
V IN GND out
SY_M 4 29 Z2CVOUT
GND in V OUT
104Z 5 28 C2055
SY IN V+4
C2051 Z2SYOUT
6 27 104Z
V+1 SY OUT
C2052 7 26 C2056
V-4
V-1
104Z 8 25 104Z CVOUT
Y IN Y OUT
C2053 C2057
9 24
V+2 V+3
104Z 10 23 104Z SYOUT
GND in Y Cb OUT
11 22
Cb IN GND out Y
12 21 SCOUT -5.0V
GND in Cb Cr OUT
13 20
Cr IN GND out Cb
C2054 14 19 C2058
V-2 V-3
104Z 15 18 104Z
GND in Cr GND out Cr
16 17
PS2 NC
Q2015
10K
RN1444
Q2013 R2061
RN1444
Q2016 10K
R2062
NJM2587
VIDEO AMP 10K
LS4 RN1444
R2063
Q2017
R2064
Q2018 10K
R2065
10K
LS5 RN1444
R2066
LS6
100K R2067
Q2019 10K
RN1444 10K
Q2020
R2068
C2067 220/6.3 R2069
C2068 104Z LS7 RN1444 100K
C2078 470/6.3
22/50
C2063
1 6 C2065 R2054
SAG YIN
2 5 1/50 150
OUT GND
C2066
C2064 3 4 R2055
VCC CIN
100/16 103Z 150
R2053
Q2014 R2052
150 150
MM1512 Y/C Mix
F G
TO NAAR-9075
SD-8:G3
P2010A
ADINCV 1
GNDVD 2
ADINSY 3
GNDVD 4
ADINSC 5
GNDVD 6
ADINPY 7
GNDVD 8
R2601
ADINPB 9
100
GNDVD 10
ADINPR 11
GNDVD 12
DACPY 13
GNDVD 14
DACPB 15
GNDVD 16
DACPR 17
GNDVD 18
DACSY 19
GNDVD 20
DACSC 21
GNDVD 22
DACCV 23
24
25
26
27
28
2SB1240
+12V Q2605
29 R2609
30
RN1402
3.9
31
Q2606
D2605 D2606
1SS352 1SS352
R2611 1K
V5CV
C2090 10/50
V5SY C2091 10/50
V5SC C2092 104Z
R2085
C2089 104Z
220
C2088 R2086
1 VSS 30
VDD
2 29 RS1
LS1 104Z 220
S1
LS2 3 28 RS2
S2
LS3 4 27 RS3
S3
5 26 +9.3V
COM1
LS4 6 25 RS4
S4
LS5 7 24 RS5 -9.3V
S5
LS6 8 23 RS6
S6
9 22
COM2
LS7 10 21 RS7
S7
LS8 11 20 RS8
S8
12 19
COM3
1K 13 NC 18 1K
NC
R2082 R2083
14 STB 17
DATA
15 GND 16
CLK
R2084
1K
Q2027
NJU7312AM
ANALOG SW
RN2402 RN2402
Q2023
+5.0V R2074 Q2025 R2078 R2078
NCH-2541_470K
+5.6V
10K 10K 10K L2502
104Z 104Z
C2082 C2085
D2004 D2006
C2083 C2086
104Z 1SS352 104Z
1SS352
68 R2080
2.2K
R2075 R2079
68 33K 33K
R2077 R2081
+9.0V
NJM2386ADL3-05 NJM2388F09
Q2505
+5.0V
D2504
D2502
1SS352
1SS352
-5.0V R2514 R2513 R2512
O I
3 2
4.7(2W) 4.7(2W) 4.7(2W)
+9.3V
D2509
1SS352
2SC2712-GR
Q2511
470
R2515
-9.3V
R2516
470
Q2512 2SC1162-GR
TX-SR875
H
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
+SUB 7
GNDSUB 6
POFF 5
+12V 4
APOWER2 3
APOWER1 2
MPOWER 1
P2601
12V TRG Z2
P2604
R2602 L2603
100 LM182 IR IN
L2604
R2616 LM182
R2617 0
0 R2618
IR OUT
0
GNDTRG 1
+12VTRG 2
3
D2607
RL1N4003 GNDTRG
GNDP 4
+12VVD 3
+12VVD 2
GNDP 1
SI8008TM
Q2501 BLM21PG221SN1
2 SW 1 L2501
VIN
4 VADJ 5
SS
GND
R2504
RN1402
10K
Q2502
Q2503
2SC2712-GR
Q2504
4A 125V
F2501
D10XB60H
D2510
SEC5+
3
R2505
1 4 2
1
0.47(1/2W)
SEC5-
D2511
F2502
RL1N4003 4A 125V
R2508 D2512
1K 1SS352
Q2506
RN2402
R2511
Q2507 1.5
2SD1468S_R