Onkyo TX-SR875 Service Manual page 23

A B
SCHEMATIC DIAGRAMS-17 (SD-17)
HDMI SECTION-3
NAHDM-9114(3/5)
1 DTA144EE
R8013 DTC144EE
Q8109
1K
Q8108
102J
C8031
C8033
19
HP DET 105Z
18
+5V
17
GND
16
DDC DATA
15
DDC CLK
14
NC
13 CEC
CERemote
12
CK-
11
CK Shield
10
CK+
9 Q8104
D0-
8
D0 Shield
7
D0+
6
D1-
5
D1 Shield
4
D1+
3
D2-
2
D2 Shield
1
D2+
C8030 102J
DTA144EE
2 R8033 DTC144EE
Q8129
1K
Q8128
102J
C8041
C8043 105Z
19
HP DET
18
+5V
17
GND
16
DDC DATA
15
DDC CLK
14
NC
13 CEC
CERemote
12
CK-
11
CK Shield
10
CK+
9 Q8124
D0-
8
D0 Shield
7
D0+
6
D1-
5
D1 Shield
4
D1+
3
D2-
2
D2 Shield
1
D2+
102J
C8040
DTA144EE
R8063
DTC144EE
3
Q8159
1K
Q8158
102J
C8081
C8083 105Z
19
HP DET
18
+5V
17
GND
16
DDC DATA
15
DDC CLK
14
NC
13 CEC
CERemote
12
CK-
11
CK Shield
10
CK+
9 Q8154
D0-
8
D0 Shield
7
D0+
6
D1-
5
D1 Shield
4
D1+
3
D2-
2
D2 Shield
1
D2+
102J
DTA144EE
C8080
DTC144EE
R8083
Q8179
1K
4
Q8178
102J
C8091
C8093 105Z
19
HP DET
18
+5V
17
GND
16
DDC DATA
15
DDC CLK
14
NC
13 CEC
CERemote
12
CK-
11
CK Shield
10
CK+
Q8174
9
D0-
8
D0 Shield WF41
7
D0+
6
D1-
5
D1 Shield WF41
4
D1+
3
D2-
2
WF41
D2 Shield
1
D2+
102J
C8090
5
8
1
1OE
2 7
1A
3 6
1B
4 5
GND
SN74CB3T3306DCT
C
U42 HDMI PC BOARD
PRODDC4
R4HPR
+3.3V
R8019
+3_3VHD1
0
C8034 104Z
5 4
SDA GND
3
6
SCL A2 SDADDC4
R8021
7 2
WP A1 0
8 1
VCC A0
SCLDDC4
Q8105
R8020 0
BR24L02FV-W
2 kbit EEPROM
Q8102
57
e_PAD
56
AUX_A0
55
AUX_A1
2SK3019 54
PRODDC3 AUX_A2
53
AUX_A3
R3HPR
52
DVEE
51
AUX_COM0
R8005
50
AUX_COM1 Q8101
10K 49
AUX_COM2
AD8196
48
AUX_COM3
Q8103 C8029
47
AMUXVCC HDMI INPUT MULTIPLEX
R8039 +3_3VHD1 46
105Z
AUX_B0
+3.3V
0 45
AUX_B1 28:I2C_SCL
C8044 104Z 2SK3019
44
AUX_B2
5 4 43
SDA GND AUX_B3
6 3
SCL A2
SDADDC3
7 R8041 +5.0V
2
WP A1 0
8 1
VCC A0 SCLDDC3
C8028 102K
Q8125
R8040 0
C8027
BR24L02FV-W 105Z
2 kbit EEPROM
PRODDC1
R1HPR
R8069 +3_3VHD1
0 +3.3V
C8084 104Z
5 4
SDA GND
6 3
SCL A2
SDADDC1
R8071
7 2
WP A1
0
8 1
VCC A0 SCLDDC1
Q8155
R8070 0
BR24L02FV-W
2 kbit EEPROM
Q8152 57
e_PAD
56
AUX_A0
55
AUX_A1
2SK3019
54
PRODDC2 AUX_A2
53
R2HPR AUX_A3
52
DVEE
51
AUX_COM0
R8055
50 Q8151
AUX_COM1
10K 49 AD8196
AUX_COM2
48
AUX_COM3
HDMI INPUT MULTIPLEX
Q8153 C8079 47
AMUXVCC
R8089
+3_3VHD1 +3.3V 105Z 46
AUX_B0
0 45
AUX_B1 28:I2C_SCL
C8094 104Z 2SK3019 44
AUX_B2
5 4 43
SDA GND AUX_B3
6 3
SCL A2 SDADDC2
R8091
7 2 +5.0V
WP A1
0
8 1
VCC A0 SCLDDC2
C8078 102K
Q8175
R8090 0
C8077
2 kbit EEPROM 105Z
BR24L02FV-W
WF42
VCC
2OE
2B
2A
D E
C8011 102K
15
DVCC 105Z
C8010
16 R0X2P
ON0
17 R0X2N
OP0
18 102K
VTTO
C8009
105Z
19 R0X1P
ON1
20 C8008 R0X1N
OP1
21 C8007 102K
DVCC
22 105Z R0X0P
ON2
23 C8006 R0X0N
OP2
24 C8005 102K
VTTO
25 105Z R0XCP
ON3
26 C8004 R0XCN
OP3
27 RST_RXSW0
RESET
28 R8001 C8019 HDMSCL
10K 102K
HDMSDA
C8012 105Z CEC
DSCL0
C8003
DSDA0
22/4
R0PWR5V
+3.3V
C8021
105Z
+5VHD
+3_3VHD1
GND
C8061 102K
15
DVCC 105Z
16 C8060 R1X2P
ON0
17 R1X2N
OP0
18 102K
VTTO C8059
19 105Z R1X1P
ON1
20 C8058 R1X1N
OP1
21 102K
DVCC C8057
22 105Z R1X0P
ON2
23 C8056 R1X0N
OP2
24 C8055 102K
VTTO
25 105Z R1XCP
ON3
26 C8054 R1XCN
OP3
27 RST_RXSW1
RESET
28 HDMSCL
R8051
10K
C8069 102K HDMSDA
CEC
C8062 105Z
DSCL1
C8053
DSDA1
22/4
R1PWR5V
+3.3V
C8071
105Z
+5VHD
+3_3VHD1
F G
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS (
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF, 330- 33pF, 331- 330pF, 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
TO SD-18:H3
VIDEO MPU
TX-SR875
H
! ARE CRITICAL FOR SAFETY.
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.