Yamaha RX-V465 Service Manual

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All voltages are measured with a 10MΩ/V DC electronic voltmeter.
Components having special characteristics are marked and must be replaced
with parts having specifications equal to those originally installed.
Schematic diagram is subject to change without notice.
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I J K
L MN
121
VIDEO 3/3
RX-V465/HTR-6240/AX-V465
IC374
IC371
IC372
IC375
CB379 CB381
CB382
W3801
CB354
IC353
CB351CB352
CB391
CB378
CB371
CB373 CB372
W3701B
W3701A
CB375 CB374
W3702A
W3702B
W3602
CB353
IC352
IC351
IC353
IC353
IC391
JK391
JK361
W3601
JK362
IC391
IC391
IC353
Primary side ground
0
0
0
0
0
3.3
3.33.4
0.3
0.3
0
3.2
0
3.2
0.2
0.9
0
5.1
(15.3)
(5.8)
5.0
3.9
0
2.6
3.9
0
(0) (0)
5.6
5.6
0.7
(0) (0)
0
(0) (0) (0) (0)
(137.8) (5.8) (3.0)
(55.4)
(137.9)
(137.9)
(274.9)
(15.3)
(3.0)
(275.5) (137.8)
(0)
(54.6)
0
0.3
5.0
0
0
0
0
5.0
0
0
0
2.3
-4.9
0
0
-4.9
0
0
5.0 5.0
00
5.0 5.0
0
0
5.0 5.0
0
0
0
0
0
-4.9
0
0
0
5.1
0
0
0
0
0
0
0
0
0
0
0
5.0
1.2
0
5.0
0
5.0
0
0
0
0
0
0
0
0
0
1W3801
(+5.5V)
CB382
(/RESET)
2
POWER ON POWER OFF
1W3801
(+5.5V)
CB382
(/RESET)
2
POWER ON
POINT D 1 / W3801 (+5.5V), 2 / CB382 (/RESET)
D
1
2
IC353: TC74HC4053AF
Analog multiplexer/demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
BINARY TO 1-OF-8
DECODER WITH INHIBIT
LEVEL
CONVERTER
VCCINHIBIT
A
B
C
GND
VEE
0X
1X
0Y
1Y
0Z
X-COM
Z-COM
Y-COM
SW
SW
SW
SW
SW
SW
11
616
10
9
8
7
12
13
2
5
3
1
14
15
4
IC351, 352: TC74HC4052AF
Analog multiplexer/demultiplexer
16
VCC
6
INH
10
A
9
B
8
GND
7
VEE
12
0X
14
1X
15
2X
11
3X
1
0Y
5
1Y
2
2Y
4
3Y
LEVEL
CONVERTER
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
SW
SW
13
X-COM
3
Y-COM
INHIBIT
0
0
0
0
1
B
0
0
1
1
X
A
0
1
0
1
X
0x, 0y
1x, 1y
2x, 2y
3x, 3y
NONE
IC371: TOP254PN
TOPswitch-HX
SOFT START
+ 16
SHUTDOWN
AUTO-RESTART
HYSYERETIC
THERMAL
SHUTDOWN
LEADING
EDGE
BLANKING
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
CURRENT
LIMIT
ADJUST
V
I(LIMIT)
DC
MAX
DC
MAX
K
PS(UPPER)
I
PS(UPPER)
I
FB
K
PS(LOWER)
I
PS(LOWER)
D
MAX
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
0
1
SHUNT REGULATOR/
ERROR AMPLIFIER
5.8V
4.8V
5.8V
Z
C
I
FB
V
BG
+V
T
V
C
ON/OFF
STOP
OFF
PWM
OVP
LINE
SENSE
VOV/
UV
F REDUCTION
F REDUCTION
CLOCK
SOFT
START
S
R
Q
SOFT START
OSCILLATOR
WITH JITTER
STOP LOGIC
CONTROL (C)
DRAIN (D)
SOURCE (S)
SOURCE (S)
MULTI-
FUNCTION (M)
K
PS(UPPER)
K
PS(LOWER)
IC374: TL431ACLPR
Adjustable precision shunt regulators
Vref
REF
CATHODE
ANODE
VIDEO (8)
VIDEO (7)
VIDEO (2)
VIDEO (3)
J model
U, C, T, K, A, B, G, E, F, J models
AC IN
SUB
TRANSFORMER
L3 SELECTOR
CONTROL
L1, L2 SELECTOR
D4 VIDEO
VIDEO2 P.C.B. C3703
CAUTION !
Safety measures
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to DIGITAL_CB7
Page 111
M8
to VIDEO (1)_CB301
Page 119
C2
to DIGITAL_CB24
Page 112
F2
to MAIN (4)_W1006A, W1006B
(R, L models)
Page 117
J8
5 k-ohms
10 W