Yamaha RX-V1500 Service Manual page 80

A B C
RX-V1500/DSP-AX1500
SCHEMATIC DIAGRAM (FUNCTION 2/2)
1
Page 81 I3
to OPERATION (3)
0 0 0
2
0
0
0 0 0
0
0
0 0 0
0
0 0 0
0
0
3
0
0 0 0
0
0 0 0
0
0 0 0
0
0
0 0 0
4
5
11.5
0
ANALOG IN L
0
0
6
0
0
0
-11.9
7
8 11.5
0
0
0
0
0
0
-11.9
9
FUNCTION(2)
10
★ All voltages are measured with a 10MΩ/V DC electronic 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.
80
D E F
Page 78 C1
to DSP
DIGITAL IN
SELECTOR
0
0
0
0
0
0
0 0
0
0 0
0
0.7 0.7
0 0 0
0
0 0
0.7 0.7
0
0 0 0
0
0
0
0
0
0 0
0
0
0
0 0
0 0
0
0
0
CENTER
11.5
0 0
0
0
0
0
0
0
0
-11.9
0
0
0
0 0
0
5.0 11.5
0
4.7 11.5 6.2 11.5
5.6 6.8 0
5.6 6.8
0
0 0
-6.0 -12.0 0
0
0
SURROUND BACK L
11.5
0 0
0
0.1
0 0
0 0.2
0.1
0
0
0.3 0
0
0 0.3
0
0.2
-11.9
ZONE 3 VOLUME
Page 84 B3
to VIDEO (6)
G H I
Page 83 J8
to POWER (3)
VOLUME
11.5
0 0
0
2.6 0
0
0
2.6 2.6
0 2.6
2.6 2.6
2.6 5.0
0 0
5.5 0
0 5.0
4.9 4.9
4.9 4.9
0
0
0
0 0
-11.9
FRONT L
0
0 0
11.5
11.5 0
0
0
0
0
0
0
0
0
-11.9
0 0
0
0
0
0
-11.9
-6.0 0
11.5 0
6.2
0.1
0
0
0 0
0
VOLUME
0
0.1
0
0.1 0
0 0
0.1 0
0.1 0
0 0
-6.0 0
0 0
0 0
0
-11.9
11.5
0
0
0
2.6 0
2.6 2.6
0 2.6
2.6 2.6
2.6 5.0
0 0 0 0
5.5 0
0
-11.9
0 5.0
4.9 0.1
4.9 4.9
VOLUME
IC502, 509: LC78212 IC503: LC78211
Analog Function Switch Analog Function Switch
1 30
L1 R1 L1 1
L2 2 29 R2 L2 2
Page 84 C3
L3 3 28 R3 L3 3
to VIDEO (6)
LCOM1 4 27 RCOM1 4
L4
5
L4 5 26 R4 LCOM1
L5 6
IC501, 507, 511, 513~515, 518, 524, 525: NJM2068MD L5 6 25 R5
IC521, 523, 527~IC530: µPC4570G2 L6 7
7 24
L6 R6
Dual OP-Amp. 8
LCOM2
8 23
LCOM2 RCOM2
L7 9
L7 9 22 R7
L8 10
OUT 1 1 8 +V CC L8 10 21
R8
11
LCOM3
11 20
LCOM3 RCOM3
–IN 2 7 OUT V DD 19
1 2
+ – + – V DD 19 LEVEL SHIFTER
V 16
SS
16
V SS 12
+IN 1 3 6 –IN 2 ZZ 14 D1 V EE
LATCH
V EE 12
RES 18
15 CL
RES 18 ZZ
–V 4 SHIFT REGISTER 17
CC 5 +IN 2 S
17 13
S ZZ CE
J K
Page 81 I6
to OPERATION (3)
0 0
0
11.5
0
0 0 0
0
0
-11.8 -11.8
-11.8
0 0
0
0 0 0
-11.8
-11.8 -11.8
0
0 0 0
0
0
-11.9
0
0
0
0 0 0
-11.8
-11.8
-11.8
0 0
0
0 0 0
-11.8
-11.8 -11.8
0 0 0
11.5
0.1
0.1 0.1
0 0 0
-11.8
-11.8
-11.8
0 0 0
0
0
0
0
0 0
-11.8
-11.9 -11.8 -11.8
0 0 0
11.5
0.1
0.1 0
0
0
0 0 0 0
-11.8
-11.8
-11.9 -11.8
0 0
0
0
0 0 -11.8
-11.8 -11.8
0 0 0
11.5
0
0
0 0
0 0
0
0
0
0 0
0
-11.9
IC504, IC510: LC78213 IC506: BD3841FS
Analog Function Switch Function Switch
L1 1 30 R1
30 R1
32 31 30 29 28 27
L2 2 29 R2
29 R2
LCOM1 3 28 RCOM1
28 R3
L3 4 27 R3 LOGIC
27
R4
L4 5 26 R4
26
RCOM1
6 25
25 R5 LCOM2 RCOM2
24 L5 7 24 R5
R6
23
RCOM2 L6 8 23 R6
22 R7
LCOM3 9 22 RCOM3
21 R8
10 21
L7 R7
20 RCOM3
11 20
LCOM4 RCOM4
LEVEL SHIFTER
V 19 LEVEL SHIFTER
DD
14 1 2 3 4 5 6
ZZ D1 16
LATCH V SS
ZZ 14 D1
LATCH
ZZ 15 CL V EE 12
SHIFT REGISTER 15
18 ZZ CL
13 RES
ZZ CE SHIFT REGISTER
S 17 ZZ 13 CE
F-SW1: INPUT FUNCTION 1
*
F-SW2: INPUT FUNCTION 2
L M N
IC517: YAC523-EVR2
Digital Volume
IN1 3
0~95dB
100
+
OUT1
OPA 34
–
REF1B 25
0~+31.5dB
REF1A 24
VolA: 30kohm
IN2 4
0~95dB
100
+
OPA 33 OUT2
–
REF2B 23
0~+31.5dB
REF2A 22
VolA: 30kohm
IN3 5
0~95dB
+ 100
OPA 32 OUT3
–
REF3B 21
0~+31.5dB
REF3A 20
VolA: 30kohm
IN4 6
0~95dB
100
+
OUT4
OPA 31
–
REF4B 19
0~+31.5dB
REF4A 18
VolA: 30kohm
Zero Crossing CH1, 2, 3, 4 Control
Zero Crossing Detector
Zero Crossing
Zero Crossing Detector
Detector 45 TE1
Detector
TE2
44
39 ZCEN2
AVDD
2
38 ZCEN1
DGND 46
Control
Register
REF 47 43 SDATAO (OD)
SDATAI
AVSS 1 S/P 41
Register 42 SCLK
56
Zero Crossing 40 CSN
Detector Zero Crossing
Zero Crossing
Detector CH5, 6, 7 Control
Detector
VolA: 30kohm
REF5A 17
0~+31.5dB
REF5B
16
+ 100
0~95dB OPA 20 OUT5
–
IN5
7
VolA: 30kohm
REF6A 15
0~+31.5dB
REF6B 14
100
+
0~95dB OPA 19 OUT6
–
IN6 8
VolA: 30kohm
REF7A 13
0~+31.5dB
REF7B 12
100
+
0~95dB OPA 18 OUT7
–
IN7 9
IC516, 519, 526, 531: YAC520-EZE2
Stereo Digital Volume Controller
VREF
26 25 24 23 22 21 20 19 18 17
+
–
LIN2
12
LIN1 11 9 LOUT
Vref
Generator
256 &
8 VREF
Reset
pulse
Generator
DVSS 4 Reset 17 ICN
L
DVDD 3 TE
16
18 ZCEN
Zero Cross Control
Detection Register 2 SDATAO
AVSS 13
S/P 20 SDATAI
AVDD 6 R
16 Register
19 CSN
1 SCLK
256
7 8 9 10 11 12 13 14 15 16 RIN1 15 7 ROUT
RIN2 14
VREF