Onkyo HTR940 Service Manual page 17

A
SCHEMATIC DIAGRAMS-2
POWER AMPLIFIER SECTION
<Note>
1
NC = No mount of parts.
SD = SCHEMATIC DIAGRAMS
NAAF-8779 (2/2)
U01
AMPLIFIER PC BOARD
2
To NAAF-8779 (1/2)
(SD-1 : G1)
3
NAETC-8781
U03
THERMAL SENSOR
PC BOARD
Q6380
LM61CIZ
1 3
G V
JL6402A
To NADG-8808
(SD-3 : D1)
4
NAPS-8780
U02
TRANS SEC. TERMINAL
PC BOARD
P6903B(YEW)
1
1
P6900B(BLK)
1
1
5
P6904B(GRN)
1
B
VOLH
SEC1H
GNDS1
+22V
PROTECT
R6701
22K
Q6702
Q6703
2SA1163-BL 2SC2712-GR
Q6707
2SC2712-GR
P6903B
S1H+
S1H-
P6904B
4 1 S1L+
2
3
F6901
3 !
2
10A /125V
1 4
S1L-
F6902
!
10A /125V
To NAAF-8779 (1/2)
(SD-1 : F5)
C
C
R5000
1K
L
R5001
1K
R
R5002
1K
R6902
1K
GND
!
RL6901
D6901
D10XB60H
1
4
!
RL6902
D6903
D10XB60H
2
1
4
3
HT-R940
+60.2V
R5180
10
(1/4W)
+ 50.5V
Q5030
2SA949Y
R5030
120K
C5010
47/50 R5020 0V
+
-0.65V
330
R5230
120K
R5050
4.7K
-54.5V
Q5040
2SC2229-Y
R5190
-60.2V
10 (1/4W)
+60.2V R5181
10 (1/4W)
+ 50.5V
Q5031
2SA949Y
R5031
120K
C5011
47/50 0V
R5021
+
-0.65V
330
R5231
120K
R5051
4.7K
-54.5V
Q5041
2SC2229-Y
R5191
-60.2V 10 (1/4W)
+60.2V R5182
10 (1/4W)
+ 50.5V
Q5032
2SA949Y
R5032
120K
C5012
47/50 0V
R5022
+
-0.65V
330 R5232
120K
R5052
4.7K
-54.5V
Q5042
2SC2229-Y
R5192
-60.2V 10 (1/4W)
To P6901B
P6901A
+52.5V
C6901
10000/69
P6911B
1
C6902
10000/69
-52.5V
P6902A
To P6902B
D
+1.1V R6020
Q6030
2SC5171
2.2
R60
+1.0V (1/4W)
0.2
(1/4
+0.6V
-0.3V
P6
ID+
ID-
R60
0.2
(1/4
R6040
2K
IDLING
-0.6V
ADJ.
Q6040
2SA1930
-1.1V
+1.1V R6021 Q6031
2SC5171
2.2
R60
(1/4W)
+1.0V
0.2
(1/4
+0.6V
-0.3V
P60
ID+
ID-
R60
0.2
(1/4
R6041
2K
IDLING
-0.6V
ADJ.
Q6041
2SA1930
-1.1V
+1.1V R6022 Q6032
2SC5171
2.2
R60
(1/4W)
+1.0V
0.2
(1/4W
+0.6V
-0.3V
P60
ID+
ID-
R60
0.2
(1/4
R6042
2K
IDLING
ADJ. -0.6V
Q6042
2SA1930
-1.1V
To N
JL6603A
To NAVD
(SD-5