Onkyo TX-SR876 Service Manual page 10

A
BLOCK DIAGRAMS-3
HDMI SECTION
1
2
3
4
5
B
HDMI BOARD
(NAHDM-9114, SD-15 to 19)
<Note>
Refer to SCHEMATIC DIAGRAM-17, -18 and -21
(SD-17, SD-18 and SD-21) for HDMI signal waveforms.
1K
HP DET
1
+5V 1OE
2
DDC DATA 1A
5
DDC CLK 2A
4
CERemote GND
Q8104
CK+/-
SN74CB3T3306DCT
D0+/-
BUS Switch
D1+/-
D2+/-
1K
HP DET
1
+5V 1OE
2
DDC DATA 1A
5
DDC CLK
2A
4
CERemote GND
Q8124
CK+/-
SN74CB3T3306DCT
D0+/-
BUS Switch
D1+/-
D2+/-
1K
HP DET
1
+5V 1OE
2
DDC DATA 1A
5
DDC CLK 2A
4
CERemote GND
Q8154
CK+/-
SN74CB3T3306DCT
D0+/-
BUS Switch
D1+/-
D2+/-
1K
HP DET
1
+5V 1OE
2
DDC DATA 1A
5
DDC CLK 2A
4
CERemote GND
Q8174
CK+/-
SN74CB3T3306DCT
D0+/-
BUS Switch
D1+/-
D2+/-
C
Q8105
BR24L02FV-W
2 kbit EEPROM
47K
5.6K
0
+3.3VHD
5.6K
HPR_R4
8
VCC
7 PRODDC4
2OE
3
1B
DDCSDA4
6
2B
DDCSCL4
Q8125
BR24L02FV-W
2 kbit EEPROM
47K
5.6K
0
+3.3VHD
5.6K
HPR_R3
8
VCC
7 PRODDC3
2OE
3
1B
DDCSDA3
6
2B
DDCSCL3
Q8155
BR24L02FV-W
2 kbit EEPROM
47K
5.6K
0
+3.3VHD
5.6K
HPR_R2
8
VCC
7 PRODDC2
2OE
3
1B
DDCSDA2
6
2B
DDCSCL2
Q8175
BR24L02FV-W
2 kbit EEPROM
47K
5.6K
0
5.6K +3.3VHD
HPR_R1
8
VCC
PRODDC1
7
2OE
3
1B
DDCSDA1
6
2B
DDCSCL1
TX-SR876/SA876
D
HDASY 71 SFL/SYNCOUT 15
HDASY
HDASC 75 36
HDASC LLC
HDACV 73 99
HDACV VS
HDAPY 76_77 4
HDAPY HC/CS
HDAPB 74 98
HDAPB FIELD/DE
HDAPR 72
HDAPR CR(P20-29)
CB(P0-P9)
Y(P10-19)
Q8800
ADV7401
VIDEO DECODER
AUX_D0
AUX_D1
AUX_D2
AUX_D3
IN/P_D0
IN/P_D1
IN/P_D2
IN/P_D3 Q8101
AD8196
HDMI INPUT
MULTIPLEX
RESET
I2C_SDA
I2C_SCL
AUX_C0
AUX_C1
ON0/OP0 R0X2
AUX_C2
ON1/OP1 R0X1
AUX_C3
ON2/OP2
R0X0
IN/P_C0
ON3/OP3 R0XC
IN/P_C1
+3.3VHD
IN/P_C2
IN/P_C3
AUX_COM2 DSCL0
AUX_COM3 DSDA0
HDMI RECIEVER
AUX_COM0
AUX_COM1
10K
R0PWR5V
10K
AUX_B0
AUX_B1
ON0/OP0 R1X2
AUX_B2 ON1/OP1 R1X1
ON2/OP2
AUX_B3 R1X0
IN/P_B0 ON3/OP3 R1XC
+3.3VHD
IN/P_B1
IN/P_B2
IN/P_B3 AUX_COM2 DSCL1
AUX_COM3 DSDA1
AUX_COM0
AUX_COM1
10K
R0PWR5V
Q8151
10K
AD8196
HDMI INPUT
MULTIPLEX
AUX_A0
AUX_A1
AUX_A2
AUX_A3 RESET
IN/P_A0 I2C_SDA
IN/P_A1 I2C_SCL
IN/P_A2
IN/P_A3
TC74V
OEDEC 1
1OE
20 bit
TC74V
OERX 1
1OE
20 bit
Q8501
SiI9135
EVNODD
ODCK
VSYNC
HSYNC
DE
CR(O24-035)
CB(O0-O11)
Y(O12-O23)
SPDIF
SD0-7
WS
SCK
MCLKIN
MCLKOUT
Q8405
SN74CB3Q330
BUS Switch