Yamaha RX-V2065 Service Manual page 139

A B C
ACDC
1
2
3
AC IN
4
5
6
(0)
5 k-ohms
10 W
7
8
9
Notes)
Safety measures
10
D E F
ACDC (2)
U, C, T, K, A, B, G, E, F models
W6001B
W6002B
Page 132 I6
to MAIN (4)_W126A, W126B
(R, L models)
W6001A
W6002A
(68.7)
(165.0)
(163)
(67.7)
(241.5)
(154.9)
(331.6)
SUB
(332.5)
TRANSFORMER
(0)
(2.9) (18.2) (18.2)
IC602
(18.2)
(5.9)
IC601
CONTROL
Primary side ground
G H
ACDC (1)
0
5.6
0
5.0
3.9
3.9
2.5
0
(0.2)
(0.2)
0
0.3
(0.3)
IC604
(0.3)
I J K
IC601: TOP255MN
TOPswitch-HX
V
C
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
5.8V
I
FB
V I(LIMIT)
CURRENT
LIMIT
ADJUST
ON/OFF
EXTERNAL
CURRENT
LIMIT (X)
+V
V
BG T
STOP LOGIC
1V
VOLTAGE
MONITOR (V)
V OVP OV/
UV
LINE
DC MAX
SENSE
5.5
K PS(UPPER)
K PS(LOWER)
0.7
CB604
0.3
0
IC603: TL431ACLPR
5.5
Adjustable precision shunt regulators
Page 136 G9
5.5
to VIDEO (3)_CB381
0
CATHODE
0
REF
0.9
Vref
ANODE
ACDC (3)
Page 124 D2
to DIGITAL (1)_CB22
IC611
1.5 1.5
0
3.3
0
CB611
L M N
RX-V2065/HTR-6295
0
DRAIN (D)
INTERNAL
1 SUPPLY
SOFT START
5.8V
4.8V
INTERNAL UV K PS(UPPER)
COMPARATOR
K PS(LOWER)
+ 16
SHUTDOWN
AUTO-RESTART CURRENT LIMIT
COMPARATOR
HYSTERETIC
SOURCE (S)
THERMAL
SHUTDOWN
CONTROLLED
TURN-ON
GATE DRIVER
STOP SOFT
START
D MAX
OSCILLATOR
DC MAX
WITH JITTER
CLOCK
F REDUCTION
S Q
LEADING
EDGE
R
BLANKING
F REDUCTION
SOFT START
I FB
PWM OFF
I PS(UPPER)
I PS(LOWER)
SOURCE (S)
3.3
★ 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.
139