Schematic Diagram (Input & Video) - Yamaha RX-V795a Service Manual

A B
RX-V795a/RDS/HTR-5170/DSP-R795a
SCHEMATIC DIAGRAM (INPUT & VIDEO)
1
IC11 : NJM2068MD
µ
IC12, 20 : PC4570G2
IC13, 15, 16 : M5220FP
Dual OP Amp
2
IC17 : LC78211
Analog Function Switch
3
4
IC18 : LC78213
Analog Function Switch
5
6
IC19 : LC78212
Analog Function Switch
7
8
Other ICs
: HD6433397A97F → See page E-36/J-30
IC21
→ See page E-35/J-29
IC406 : LC74781-9626
E-67/J-57
C D E
S-VIDEO AMP & SELECTOR
11.1
2.1 2.5
2.5 2.5
1.5
0.1
0.3
0
SYNC SIGNAL
DETECTOR
4.4
4.9
1.9
3.4
2.7
0
11.3
0
11.1
11.1
5.6
5.0
11.1
5.0
5.7
5.7
0
P-E66/J56
D-8
F G
CIRCUIT CHANGES BY MARKET.
: NOT USED
: USED
0.5 0
0.5
SUPERIMPOSE
5.0
0 0 0
0
5.0
4.3
1.1
1.8
1.1
4.3
0
IC406
2.2
1.1
1.1 1.5
1.0
0.5
0.1
0
0.5
2.7 2.7
1.1
0.5
0
REGULATOR
P-E69/J59
I-2
H I J
IC401 : TC4053BP
Triple 2-Channel Analog Multiplexers/
Demultiplexers
VDD
16
14 X-COMMON
OX
A 11 OUT C IN 12
OUT C IN IX
13
B 10 OUT C IN 2 OY
OUT C IN 1 IY
C 9 OZ
OUT C IN 5
OUT C IN IZ
3
INH 6 4 Z-COMMON
15 Y-COMMON
8 7
VSS VEE
REAR L
0.7
0.7
1.3
23.8
0.7
0.7
0
SPEAKER
0.7
23.8
RELAY DRIVE
CENTER
TO MAIN (2) TO MAIN (1)
P-E71/J61 P-E70/J60
G-2 I-5
TO MAIN (5)
P-E68/J58
A-1
SUB POWER SUPPLY
8.8 9.8
8.8
AC12.6
9.3 9.8
0
0.7 9.3
0
0 0
INPUT & VIDEO
K L
IC402~404, 407, 408 : LA7956
Video Switch
µ
IC405 : PD4066BC
Quad Analog Switch/Multiplexer
* All voltage are measured with a 10M Ω /DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.