Onkyo HT-R508 Service Manual page 14

A B
SCHEMATIC DIAGRAMS-2
POWER AMPLIFIER SECTION
1
NOTE
!
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
2
FRONT Lch
FRONT Rch
VOLH
SEC1H
To NAAF-8779(1/2)
GNDS1
(SD-1 : H1) +22V
PROTECT
R6701
22K
3 Q6703
Q6702
2SA1163-BL
2SC2712-GR
4
NAPS-8780
P6903B
U02 S1H+
TRANS. SEC. TERMINAL
PC BOARD
P6904B
P6903B(YEW)
S1H-
4 1
3
2
F6901
P6900B(BLK) 2 !
3
10A 125V
1 4
5
P6904B(GRN) ! F6902
10A 125V
C
NAAF-8779(2/2)
U01 AMPLIFIER PC BOARD
+51.5V
C
+50.5V
R5000 C5010
R5020
+ 0V
1K 47/50 330
-46.5V
-51.5V
+51.5V
L
+50.5V
R5001 C5011
R5021
+ 0V
1K 47/50 330
-46.5V
-51.5V
+51.5V
R
+50.5V
R5002 C5012 R5022
0V
+
330
1K 47/50
-46.5V
-51.5V
R6902
To P6901B
1K
Q6707
P6901A
GND
2SC2712-GR
D6901
4 1 D10XB60H
C6901
10000u/69v
!
3 2
RL6901
1
3 2 4 1
!
RL6902
4 1
C6902
D6903
10000u/69v
S1L+ D10XB60H
2
1 P6902A
4
To P6902B
3
S1L-
To NAVD-9178(2/2)
From Audio I/O
(SD-6 : E1)
D E
To P6901A To P6902A
P6901B
R5180
+52.5V
+B1C
10 (1/4W)
+1.1V R6020
+BC Q6030
2SC5171 IPRO
2.2 !
(1/4W) R6080
+1.0V 0.22
Q6050
(1/4W)
LIST
+0.6V Q6070
2SC2240
R6140
22K
R5030
120K
-0.3V
NFC SPC
P6080
R5230 R6100
2
120K ID+ 0.22(2W)
1
ID-
IDLING
!
ADJUST
R6090
0.22
R6040 Q6060
(1/4W)
2K
LIST
-0.6V
-0.4V
R6170
VPRO
47K R6180
VOLH
Q5040 D6000 47K
-BC
KDS4148U
2SC2229-Y
-1.1V
Q6040
2SA1930
R5190
10 (1/4W)
-B1C -52.5V
R5181 +52.5V
+B1L
10 (1/4W)
R6021
+1.1V +BL Q6031
2SC5171
! IPRO
2.2
R6081
(1/4W)
1.0V 0.22
Q6051
(1/4W)
LIST
+0.6V
Q6071
2SC2240
R6141
22K
R5031
120K
-0.3V
NFL SPL
P6081
R5231 R6101
2
120K
ID+ 0.22(2W)
1
ID-
IDLING
ADJUST !
R6091
0.22
R6041
(1/4W) Q6061
2K
LIST
-0.6V
-0.4V
R6171
VPRO
47K R6181
VOLH
47K
Q5041 -BL D6001
KDS4148U
2SC2229-Y
-1.1V
Q6041
2SA1930
R5191
10 (1/4W)
-52.5V
-B1L
R5182 +52.5V
+B1R
10 (1/4W)
R6022
+ 1.1V +BR Q6032
2SC5171
2.2 ! IPRO
(1/4W) R6082
+1.0V 0.22
Q6052
(1/4W)
LIST
+0.6V
Q6072
2SC2240
R6142
22K
R5032
120K
-0.3V
NFR SPR
P6082 R6102
R5232
2
120K 0.22(2W)
ID+
1
ID-
IDLING
!
ADJUST
R6092
0.22
R6042
Q6062
(1/4W)
2K
-0.6V LIST
-0.4V
R6172
VPRO
47K R6182
VOLH
D6002 47K
-BR
Q5042
KDS4148U
2SC2229-Y -1.1V
Q6042
2SA1930
R5192
10 (1/4W)
-B1R -52.5V
To NAAF-8779(1/2)
(SD-1 : H5)
P6911B
JL6603A
To NAVD-9178(2/2)
(SD-6 : A2)
JL6600A
1 SPC
2 SPL
3 SPR
4 SPSL
5 SPSR
6
7
F G
P6902B
R5183
+51.5V
+B1SL
SL
10 (1/4W)
+1.1V R6023
+BSL
2.2
+50.5V (1/4W)
+1.0V
+0.6V
R5033
120K
-0.3V
R5003 C5013 R5023 0V
+ NFSL
1K 47/50 330 R5233
120K
IDLING
ADJUST
R6043
2K
-46.5V
-0.6V
-0.4V
Q5043
-BSL
2SC2229-Y
-1.1V
Q6043
2SA1930
R5193
10 (1/4W)
-51.5V -B1SL
+51.5V R5184
+B1SR
SR
10 (1/4W)
R6024
+1.1V +BSR
2.2
+50.5V
(1/4W)
+1.0V
+0.6V
R5034
120K
-0.3V
R5004 C5014 R5024
0V
+ NFSR
1K 47/50 330 R5234
120K
IDLING
ADJUST
R6044
2K
-46.5V
-0.6V
-0.4V
Q5044
-BSR
2SC2229-Y
-1.1V
Q6044
2SA1930
R5194
10 (1/4W)
-51.5V
-B1SR
Refer to following table about the parts displayed by mark "LIST".
Q6050 - 6052 Q6053- 6054 Q6060- 6062 Q6063 - 6064
2SC5242 2SC5242 2SA1962 2SA1962
VOLH
IPRO
VPRO
HT-R508
H
+52.5V
Q6033
2SC5171
IPRO
!
R6083
0.22
Q6053
(1/4W)
LIST
Q6073
2SC2240
R6143
22K
SPSL
P6083
R6103
2
ID+ 0.22(2W)
1
ID-
R6093 !
0.22
(1/4W) Q6063
LIST
R6173
VPRO
47K R6183
VOLH
47K
D6003
KDS4148U
-52.5V
+52.5V
Q6034
2SC5171 IPRO
!
R6084
0.22
Q6054
(1/4W)
LIST
Q6074
2SC2240
R6144
22K
SPSR
P6084
R6104
2
0.22(2W)
ID+
1
ID-
!
R6094
0.22
Q6064
(1/4W)
LIST
R6174
VPRO
47K R6184
VOLH
47K
D6004
KDS4148U
-52.5V