Yamaha HTR-5740 Service Manual - Page 34
Browse online or download pdf Service Manual for Receiver Yamaha HTR-5740. Yamaha HTR-5740 39 pages. Av receiver/av amplifier
Print Page
- 1. Contents
- 2. Service Manual
- 3. Set Menu Table
- 4. Internal View
- 5. Block Diagram
- 6. Printed Circuit Board (Foil Side)
- 7. Schematic Diagram
- 8. Schematic Diagram (Operation)
- 9. Schematic Diagram (Main)
- 10. Schematic Diagram (Power)
- 11. Schematic Diagram (Subtrans)
- 12. Schematic Diagram (Video)
- 13. Exploded View
A
B
C
SCHEMATIC DIAGRAM (POWER)
1
2
POWER AMP.
FRONT L
3
4
5
6
7
SURROUND L
8
CENTER
9
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.
D
E
F
1.0
5.0
0
54.0
53.5
1.1
54.6
53.5
0
0
-0.6
-0.6
0
54.0
53.5
1.1
53.5
54.6
0
0
-0.6
-0.6
0
54.0
53.5
1.1
53.5
54.6
0
0
-0.6
-0.6
54.0
53.5
1.1
53.5
54.6
0
0
-0.6
-0.6
54.0
53.5
1.1
53.5
54.6
0
0
-0.6
-0.6
Page 82
A5
Page 82
A5
to MAIN (1)
to MAIN (1)
s
G
H
11.8
19.1
5.0
11.2
4.9
11.2
0
0
0
0
0
-11.7
-20.0
-4.9
-11.9
IC301: LM61CIZ
IC302: NJM7812FA
Temperature Sensor
Voltage Regulator
+Vs
Vout
GND
IC303: NJM79M12FA
IC305: NJM79M05FA
Voltage Regulator
54.0
53.5
1.1
53.5
54.6
0
0
-0.6
-0.6
Page 82
A1
to MAIN (1)
I
J
K
19.1
AC30.4
-0.1
-0.1
-20.0
to Power
Transformer
AC18.3
11.2
0
0
-11.9
Page 82
F7
to MAIN (1)
IC304, 306: NJM7805FA
Voltage Regulator
INPUT
INPUT
OUTPUT
OUTPUT
COMMON
COMMON
COMMON
OUTPUT
INPUT
Page 84
G2
to SUBTRANS
L
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
RX-550/HTR-5750
U, C, T, K
R
L
A, B, G, E
(WC83940)
(WC83950)
(WD07280)
(WC83960)
s1
SW291
X
WB49370
WD07370
X
s2
CB291
X
V937780
V937780
X
s3
CB292
X
V937790
V937790
X
s4
CB293, 294
X
WC05070
WC05070
X
s5
W291
X
V941190
V941190
X
s6
F3
X
T4AL250V
T4AL250V
X
KB00079
KB00079
s7
C360
6800/25
6800/25
6800/25
6800/25
RX-V450/HTR-5740/DSP-AX450
J, U, C, T, K
R
L
A, B, G, E
(WC83970)
(WC83980)
(WD07290)
(WC83990)
s1
SW291
X
WB49370
WD07370
X
s2
CB291
X
V937780
V937780
X
s3
CB292
X
V937790
V937790
X
s4
CB293, 294
X
VP20650
VP20650
X
s5
W291
X
V941190
V941190
X
s6
F3
X
T4AL250V
T4AL250V
X
KB00079
KB00079
s7
C360
4700/25
4700/25
4700/25
4700/25
x: NOT USED
O: USED / APPLICABLE
[R, L models only]
to Power Transformer
83