Yamaha HTR-6230, Service Manual

Page: 81 / 99

★
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
B C D E F G H I J K L M N
81
MAIN 1/2
RX-V365/HTR-6230
CB101
CB103
CB104
IC102
IC101
W102A W102B
W101B
W103
W101A
SURROUND L
SURROUND L
CENTER
CENTER
FRONT L
FRONT L
-11.9
3.3
0
0
3.3
-11.9
0
0
-11.9 0
0
-11.9
-11.9
0
0
-50.8
-52.1
51
.9
0 0 0 0
51
.4
0 0
0.5
0 0 0 0
-50.8
-52.1
51
.9
0 0 0 0
51
.4
0 0
1.
6 0 0 0 0 0 0
0
5.0
0
0
0
0
51.6
0
0
0
0
51.6
0
0
0
0
51.6
0
0
51.6
51.6
-51.6
51.8
3.4
50.9
2.7 2.7
4.4
51.6
51.6
50.7
-51.3
51.8
0
0.4 0.4
0
0
0
51.6
0
0
51.6
0
0
5.16
51.8
0
0 0
0
0
-12.0
3.3
3.3
-12.0
3.3
3.3
-12.0
0
0
0
0
0
0
0
0
0
0
3.4
0
0
11.9
0
11.8
11.9
11.7
0
0
0
11.9
-12.0
11.7
-12.1
-12.0
-12.1
11.9
3.4
11.7
11.7
11.6
0
0
11.6
-12.1
-32.5
-32.5
-35.7
0
52.0
0.2
-51.9
11.8
11.9
11.9
11.9
0
0
-11.9
-41.3
-41.3
0
0
0
11.6
0
0
11.6
-12.1
-31.8
11.9
0
0.2
3.3
-12.0
-12.1
11.8
0.2
AC76.5
AC61.9
IC101 : STK433-330-E
3-channel AF power amplifier, stand-by circuit built-in
SUB
Pre
Driver
CH1
+
–
Pre
Driver
CH2
MONO IC
Bias Circuit
Pre
Driver
CH3
9 5 4 6 7 10 13 14 15 16 17 19 18
3
8
11
12
1
2
+
–
+
–
IC102 : STK433-130-E
2-channel AF power amplifier, stand-by circuit built-in
SUB
9 7 13 6 4 5 10
2
1
12
11
+
–
+
–
14
15
8
3
Pre Driver
CH1
Pre Driver
CH2
Bias Circuit
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
High Low (U, C models) Low (R, T, K, A, B, G, E, F, L models)
+3.0 to +3.3 (255) +1.20 to +1.35 (102) +1.00 to +1.20 (90) LIM [V] (A/D 3.3V=255)
+46.0 to +52.0 (8-ohms)
+20.0 to +23.0 (8-ohms/6-ohms) +18.0 to +21.0 (8-ohms/6-ohms)
-22.0 to -19.0 (8-ohms/6-ohms) -25.0 to -23.0 (8-ohms/6-ohms)
+33.0 to +36.0 (6-ohms)
-52.0 to -46.0 (8-ohms)
-36.0 to -33.0 (6-ohms)
+BV [V]
-BV [V]
LIM [V]
POWER AMPLIFIER
POWER AMPLIFIER
SPEAKERS
FRONT A
L/R
SPEAKERS
FRONT B
L
R
L
R
SURROUND
CENTER
MAIN (3)
MAIN (1)
To POWER TRANSFORMER
to OPERA
TION (2)_CB233
P
age 80
A8
to OPERA
TION (6)_CB261
P
age 79
K5
to DSP_CB50
1
P
age 77
B4