Yamaha RX-V795a, Руководство по обслуживанию

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RX-V795a/RDS/HTR-5170/DSP-R795a
A B C D E F G H I J K L
1
2
3
4
5
6
7
8
INPUT & VIDEO
■
SCHEMATIC DIAGRAM (INPUT & VIDEO)
* 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.
E-67/J-57
IC17 : LC78211
Analog Function Switch
IC11 : NJM2068MD
IC12, 20 :
µ
PC4570G2
IC13, 15, 16 : M5220FP
Dual OP Amp
IC18 : LC78213
Analog Function Switch
IC19 : LC78212
Analog Function Switch
IC402~404, 407, 408 : LA7956
Video Switch IC401 : TC4053BP
Triple 2-Channel Analog Multiplexers/
Demultiplexers
Other ICs
● IC21 : HD6433397A97F
→
See page E-36/J-30
● IC406 : LC74781-9626
→
See page E-35/J-29
IC405 :
µ
PD4066BC
Quad Analog Switch/Multiplexer
16
VDD
LOGIC LEVEL
CONVER
TER
12 OX
7
VEE
6 INH
OUT C IN
13 IX OUT C IN
2 OY OUT C IN
1 IY OUT C IN
5 OZ OUT C IN
3 IZ OUT C IN
4
Z-COMMON
15
14
X-COMMON
Y-COMMON
9
C
10 B
11
A
8
VSS
REAR L
CENTER
5.0
5.7
5.6
5.6
11.1 0
0 11.1 0 0
5.0
0
0.1
1.1
1.8
0.7
0
0
8.8
8.8
9.3
9.3
9.8
0
0
9.8
0
0.5
0.5
1.1
2.7 2.7 2.7
3.4
0.1
0.3
11.1
1.5
2.1
2.5
2.5
0.5
0.5
0
5.0
0
4.4
4.9
1.9
1.1
4.3
4.3
5.0
1.1
0 0 0
2.5
0
11.1
3.8 3.8
3.8 5.3 3.8
3.8
3.8
5.3
0
11.5 11.3 11.1
0
11.5 11.3
0
0
11.1
11.3
3.8 3.8
11.1
3.8
0
3.8
11.5 11.3
5.6
2.4
0
5.0
5.0
5.0 0 5.0
0
2.0 5.0 1.1 0
1.1
2.5 0
0.1
2.4 2.4
4.9 4.9
0
5.0
11.1 3.8
0
3.8
11.5 11.3
5.7
11.1 3.8
0
3.8
11.5 11.3
5.7
1.1 1.5
2.2
1.0
0
0.5
0.5 5.0 5.0
0 0 0
11.1
5.6 5.6
11.1 11.5
0
5.0
11.1
5.7
0
11.1
5.6
0.7
0.7
0.7
0
23.8
23.8
0.7
0.7
1.3
AC12.6
SUB POWER SUPPLY
S-VIDEO AMP & SELECTOR
SUPERIMPOSE
REGULATOR
SYNC SIGNAL
DETECTOR
SPEAKER
RELAY DRIVE
P-E66/J56
D-8
P-E69/J59
I-2
P-E70/J60
I-6
T
O
MAIN (1)
TO MAIN (5)
P-E68/J58
A-1
P-E71/J61
TO MAIN (2)
G-2
P-E70/J60
TO MAIN (1)
I-5
CIRCUIT CHANGES BY MARKET.
: NOT USED
: USED
IC406