Video Section - Onkyo TX-SR876 Service Manual

A B
BLOCK DIAGRAMS-2

VIDEO SECTION

1
VIDEO BOARD (NAVD-9052, SD-6)
COMPONENT VIDEO
Y1
CB1
IN 1
CR1
Y2
IN 2 CB2
2 CR2
Y3
IN 3 CB3
CR3
COMPOSITE VIDEO
DVD
VCR/DVR
CBL/SAT
3
GAME/TV
AUX 1
AUX 2
(FRONT)
S VIDEO INPUT
C Y
DVD
C Y
VCR/DVR
C Y
CBL/SAT
4
C Y
GAME/TV
C Y
AUX 1
C Y
AUX 2
(FRONT)
NOTE
MMP is short for MAIN MICROPROCESSOR.
5
<Note>
Refer to SCHEMATIC DIAGRAM-6, -17, -18 and -21 (SD-6, SD-17, SD-18 and SD-21)
for video and HDMI signal waveforms.
C
Video Switch
Q2201
NJW1321FP1
.
6dB
Y
.
6dB
.
6dB
CB
.
6dB
.
6dB
CR
.
6dB
Video Amp
Q2012,Q2013
TC74HC4051AF
NJM2587V
MAIN
LPF(12MHz)
6dB DRV
Z2
LPF(6MHz)
6dB DRV
MAIN
LPF(12MHz)
6dB DRV
S-DET
MMP
Z2
LPF(6MHz)
6dB DRV
Z2 S-DET
MMP
MAIN
LPF(12MHz)
6dB DRV
Z2
BPF(140K-6MHz)
6dB DRV
6dB DRV
Q2014
MM1512
Y/C Mix
D E
C-DET
MMP
24MHz MAX
HDMI BOARD
(NAHDM-9114, SD-15 to 19)
12MHz MAX
HDAPY
Y
HDBCV
CVBS
HDAPB
CB HDBSC
Y
HDBSY
HDAPR
CR C
75
75
75
Q2027
NJU7312AM
Analog switch
MMP
F G
Video Amp
Q2206
NJM2586AM
100MHz -3dB
6dB
6dB
6dB
MMP
Video Amp
Q2012,Q2013
NJM2587V
LPF(12MHz)
6dB DRV
LPF(12MHz)
6dB DRV
LPF(12MHz)
6dB DRV
LPF(6MHz)
6dB DRV
C
LPF(6MHz)
6dB DRV
C
BPF(140K-6MHz)
6dB DRV
Video Signal Flow Analog example is Component Video except
Analog Analog
1
(Through Mode)
HDMI HDMI
2
(Through Mode)
3 HDMI HDMI
Analog HDMI
4
TX-SR876/SA876
H
COMPONENT VIDEO
Y
CB MONITOR OUT
CR
COMPOSITE VIDEO
MONITOR OUT
VCR/DVR OUT
S VIDEO OUTPUT
Y
MONITOR OUT
Y
VCR/DVR OUT
COMPOSITE VIDEO
ZONE2 OUT
8
5 OSD HDMI
6 OSD Analog
Analog Analog
7
(Up-conversion)
8 Composite Composite