Schematic Diagram - Yamaha HTR-5635 Service Manual

A B
SCHEMATIC DIAGRAM (FUNCTION 1/2)
1
2
0
0
0
0
0
0 PROCESSOR
0
0
0
0
0
0
0
0
MAIN L
3
0
0
0
0
0
4
5
6
7
MUTE
8
0 0
0.7 0.7
0 0
9
C D E
# All voltages are measured with a 10MΩ/V DC electric volt meter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
Page 52 F1
6.7 12.0
7.4
12.0
7.4 0 5 8
0 6
0
-7.4
0 -7.4
SOUND
0
-6.7 12.1 0 2
0
0 3
0
4
-12.0
0
0
0
0
0 0
0
0
0
0
0 L
0 0
0
0
0
0
0
0 0
0
0
0
0
0
0
5.6
0
0
-5.6
CENTER
REAR L
4.9
4.9
0
1.2
4.9
4.9
4.9
0.9
1.9
0.6
0
4.7
1.9 4.9
4.7
4.9
0
0
0
0
F G
Page 51 A6
to OPERATION (1)
7 0
1 0
12.0
0 5 8
7
0 6 0
2
1
0
3 -0.1
0 4
-12.0
4.9
4.9
-11.9
4.9
4.9
4.9
4.9
MAIN CPU
4.9
RESET
0
0
0
0
4.7
0
0.1
0
0
4.9 0
4.9
0
0
1
0
0.2
0
: Not applied to HTR-5635
H I
IC302: BD3811K1
Sound Processor
CD-R L/R 71, 72 73, 74 VCR L/R
TUNER L/R 77, 78
47k
CD L/R 1, 2
47k
CD-R L/R 79, 80
47k
V-AUX L/R 9, 10
47k
VCR L/R 7, 8
47k
D-TV L/R 5, 6
47k
DVD L/R 3, 4
47k
L 22
47k
R 24
47k
RL 14
47k
RR 13
47k
C 15
47k
W 16
47k
L 19
R 17 -1
IC303, 304: µPC4570G2
Dual OP-Amp
OUT 1
1
–IN 1 2
+ – +
+IN 3
1
–V CC 4
5.6 13.3
0.7
2
0.7
0
13.3 13.3
A
12.6
B
7.3 6.8
6.8
0
0
0
4.9 5.6
5.6
0 0
4.9
0 0
Point 1 Pin 13 of IC301
J K L
HTR-5635
MASTER
TREBLE BASS
VOLUME OUTPUT BASS
±14dB ±14dB
GAIN
0 - 100dB BOOST
2dB step 2dB step
0.5 - 18dB
+ 1dB step 0, 4, 8, 12dB
– 2dB step
+
– 55 L OUT
CH2
+
–
+
– 57 R OUT
+
–
+
37 RL OUT
–
+
–
+
38 RR OUT
–
+
–
+ 36 C OUT
–
+
–
+ 35 SW OUT
–
INPUT ATT
0, -6, -12, -18dB
DIGITAL
47k 47k 47k 47k 47k 47k CONTROL
21 24 26 25 27 28 46 47 48
Hi Level >2.2V
L R RL RR C SW
µ-COM
Low Level <1.0V
FROM DSP
IC305: MM74HC4053SJX
Triple 2-Channel Analog Multiplexer IN/OUT
VCC CY CX BY BX AY AX
16 3 5 1 2 13 12
TO
OUT/IN
Logic
Binary to 1 AX or AY
A 11 Level
of 2 Decoders YG
Conversion
with INHBIT
Logic TG
OUT/IN
B 10 Level
Conversion Binary to 1 BX or BY
of 2 Decoders TB
with INHBIT
Logic
C 4
Level
Conversion TC
OUT/IN
Binary to 1 CX or CY
Logic
9 of 2 Decoders TG
INH Level
with INHBIT
Conversion
8 7
GND VSS
IC306: NJM78L05A-T3
Voltage Regulator
INPUT
8 +V
CC
7 OUT 2
–
6 –IN
2
OUTPUT
5 +IN
2
GND
x: NOT USED
O: USED / APPLICABLE
Point 2 emitter of Q309
and collector of Q308
A Q309 E
B Q308 C
POWER ON POWER OFF
(Connect the power cord) (Disconnect the power cord)
49