YAMAHA EMX660 Diagram
A
BCDEFGH I JK
L MN
SCHEMATIC DIAGRAM (MAIN 1/2)
RX-V350/HTR-5730
1
L CH POWER AMP
49.2
000
0
000
0
0
MUTE
-12.1
0
0
0
0
SURROUND L
2
-12.1
-47.9
-49.1
49.2
47.2
FRONT L
0.6
0
DETECT
48.9
0
0
SURROUND L
0
49.1
0
0
3
DETECT
48.9
47.2
47.2
4
47.8
47.8
29.1
0
0
5.0
0
0
0
R CH POWER AMP
000
0
000
0
0
-47.9
49.2
MUTE
-49.1
47.2
5
0
-12.1
0
0
-12.1
0
0.6
0
DETECT
0
48.9
0
0
FRONT L
48.9
0
0
0
0
DETECT
0
0
4.8
0
0
000
0
0
0
11.8
K5
Page 54
to FUNCTION (10)
MAIN (4)
x: NOT USED
O: USED / APPLICABLE
0
L7
6
Page 53
to FUNCTION (1)
DETECT
48.9
0
0
-48.5
-48.7
-48.7
-49.0
CENTER
-47.9
-49.0
7
D3
Page 56
to MAIN (1) µ-COM Section
MUTE
0
0.7
0
0.4
-0.3
-49.0
0
-0.3
0
CENTER POWER AMP
0
0.1
0.1
0
1.1
12.0
-47.9
-49.1
49.2
0
0
0
0
RELAY
DRIVE
SPEAKER
-12.0
-12.0
-12.0
RELAY
RELAY DRIVE
11.8
0 11.9
11.6
11.6
-12.0
11.8
-12.0
-12.0
-12.0
SPEAKER RELAY
RELAY DRIVE
11.8
00
11.8
11.7
0.7
11.6
-12.0
13.0
0.1
0
0.1
POWER SUPPLY
AC 13.3
8
9
10
MAIN (1) Power Section
47.2
46.6
46.0
11.6
11.7
11.7
DETECT
48.9
0
0
-12.0
SPEAKER RELAY
0
1.146.6
0
CENTER
-44.0
-28.4
-28.9
-28.9
0
49.2
POWER RELAY
MAIN (2)
0
-49.1
0
AC 72.5
IC101: STK404-130Y
Power Amp.
TR7
TR6
R4
R5
C2
Input Amp.
IN NF
PT1
123456789
SUB
Driver
Amp.
TR8
C3
10 11 12 13
★ 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.
IC102, 103: STK403-130Y
Power Amp.
3
8
Pre
Driver
CH1
11
12
1
2
SUB
Pre
Driver
CH2
15
14
Bias Circuit
5 4 6 7910
13
55
A
BCDEFGH I JK
RX-V350/HTR-5730
SCHEMATIC DIAGRAM (MAIN 2/2)
L MN
1
Point 2 Pin 12 of IC241 Point 3 Pin 13 of IC242
Point 4 emitter of Q258
and collector of Q259
MAIN (3)
A Q258 E
INPUT
SELECTOR
2
B Q259 C
Page 55
A7
to MAIN (1) Power Section
Page 53
(Connect the power cable)
POWER ON
G1
POWER OFF
(Disconnect the power cable)
to FUNCTION (1)
3
12.1
5.5
3.9
3.9
6.3
3.903.9
12.0
6.9
6.2
4.8
4.8
6.36.3
7.2
0
0
FREQUENCY STEP
MUTE
H7Page 52
CONTROL
4
4.8
-12.0
-12.0 4.9
00004.9
12.04.9
5.7
12.0
5.1
2.2
2.2
4.402.2
5.6
5
5.6
0
4.9
1.7
2
RDS
-12.0 4.9
DECODER
0
0
0
1.9
12.1
-12.1 4.9
-12.1 4.9
4.9
4.8
4.8
4.8
4.8
Page 54
to FUNCTION (4)
G1
to DSP
0.1
0.7
0
11.7
0
4.9
-12.3
0
0
0
4.9
0.4
4.9
0.4
4.9
0
0
0
0
4.9
4.9
4.9
4.9
4.9
0
0.9
4.9
0
0
0
0
0
0
IC241: LC72722PM
RDS Signal Processor
3
VDDA
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
REFERENCE
VOLTAGE
4
ANTIALIASING
2
20
21
22
23
7
8
9
10
FILTER
CCB
TEST
VREF
1 5 6
57 kHz
bpf
(SCF)
RAM
(24 BLOCK DATA)
MEMORY
CONTROL
FL OUT
VREF
SMOOTHING
FILTER
C IN
PLL
(57 kHz)
ERROR CORRECTION
(SOFT DECISION)
CLK (4.332 MHz)
OSC/DIVIDER
RECOVERY
SYNC / EC
CONTROLLER
SYNC
DETECT-1
CLOCK
(1187.5 Hz)
DATA
DECODER
SYNC
DETECT-2
14
15
19
18
24
VDDD
VSSD
RDS-ID
SYNC
SYR
x: NOT USED
O: USED / APPLICABLE
4.8
0
0
0
6
0
LEVEL
11.7 0 0
SHIFT
0
13.4
13.4
6.2
5.6
6.2
5.6
5.6
4.9
5.6
4.9
5.0
7
0
4
13.4
13.4
A
13.3
7.4
6.8
8
0
POWER DETECTOR
& RESET
4.8
04.84.8
00
4.9
4.8
4.2
0
4.9
0
B
4.8
0
0
0
0
4.8
4.8
0.4 0.4
1.1
1.1
0
0
0
0.8
4.8
4.9
0
4.9
4.9
4.8
4.8
1.1
1.1
4.8
0.4
4.8
0.4
0
4.9
4.9
4.9
0
0
0
0
0.8
4.704.9
0
5.1
0
0
4.9
0
0
4.9
4.8
4.8
MICRO COMPUTER
3
0
0.3
0.1
4.9
0
4.7
4.9
4.8
2.402.3
4.9
4.9
0
0
5.0
9
10
56
Page 52
to DSP
L7
MAIN (1) µ-COM Section
11 16 17 13 12
T5T6T7
X IN
X OUT
IC391: LA7956
Video Switch
6dB
AMP
DRIVER
CONTROL
4 INPUT 1 OUTPUT
VIDEO SWITCH
123456789
VIDEO
A B VIN1 GND VIN2 VCC VIN3 VIN4
OUT
★ 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.
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