Onkyo TX-SR503 Service Manual page 20

A B
SCHEMATIC DIAGRAMS-3
POWER AMPLIFIER SECTION-1
1
Refer to following table about the parts displayed by mark " ".
Transistors
CIRCUIT NO. DESCRIPTION
Q5000 - 5002 2SC2240-BL
Q5010 - 5012
Q5003 - 5006
2SC2240-BL, KTC3200-BL
Q5013 - 5016
Q5030 -5036 2SA949-Y
Q5040 - 5046 2SC2229-Y
Q5050 - 5056 2SC1815-GR, BL
NOTE
THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR SAFETY
2
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.
3
4
5
C D
SL R5163
R5113 100 (1/4W)
1K 52.5V
R5093
Q5033
100K
52.0V
1.1V
51.5V
C5033
-0.1V NC
C5103
C5053
10/63
R5003 C5013 47/50
Q5003 Q5013 C5083
1K 10/50
0V 040C R5033
R5013
R5023 120K
C5003
56K
330
R5053
101K -0.65V
4.7K R5233 120K
C5043
220/16
R5133
C5093
18K
Q5053
-1.1V
101K
-47.5V
R5043 2.2K
-48.1V
C5113
Q5043
R5063 10/63
C5023
D5003
1.2K
R5103 10/50
R5173
MTZJ5.6B
100K
-51.7V -52.2V 100
DZ-5.6BSB R5073 R5083
(1/4W)
NC 470
SR R5164
R5114 100(1/4W)
52.5V
1K
R5094
Q5034
100K
52.0V
1.1V
51.5V
C5034
-0.1V
NC
C5104
C5054
10/63
47/50
R5004 C5014
Q5004 Q5014 C5084
1K 10/50
0V 040C R5034
R5014 R5024
120K
C5004
56K
330
101K -0.65V R5054
4.7K R5234 120K
C5044
220/16 R5134
C5094
18K
Q5054 101K
-47.5V -1.1V
R5044 2.2K
-48.1V C5114
10/63
Q5044
R5064
C5024
R5104 1.2K
D5004 10/50
R5174
100K
MTZJ5.6B
R5074 R5084 -51.7V -52.2V 100
DZ-5.6BSB
NC 470 (1/4W)
R5165
SBL
100(1/4W)
R5115
52.5V
1K
R5095
Q5035
100K
52.0V
1.1V
51.5V
C5035
C5105
NC
-0.1V
10/63
C5055
47/50
R5005 C5015 Q5005 Q5015 C5085
1K 10/50 040C R5035
0V
R5015
R5025 120K
C5005
56K
330
101K R5055
-0.65V
4.7K C5045 R5235 120K
220/16
R5135
Q5055 18K
C5095 -1.1V
-47.5V
R5045 2.2K 101K
-48.1V
C5115
10/63 Q5045
R5065
C5025
D5005
R5105 1.2K
10/50 R5175
MTZJ5.6B
100K
-51.7V 100
R5075 R5085 -52.2V
DZ-5.6BSB
NC 470 (1/4W)
R5166
SBR
100 (1/4W)
R5116
1K 52.5V
R5096
Q5036
100K
52.0V
1.1V
51.5V
C5036
NC
-0.1V
C5106
C5056
10/63
47/50
R5006 C5016 Q5006 Q5016 C5086
1K 10/50 0V 040C
R5036
R5016
R5026 120K
C5006
56K
330
-0.65V R5056
101K
4.7K R5236 120K
C5046
220/16
R5136
C5096
18K
Q5056 101K -1.1V
-47.5V
R5046 2.2K
-48.1V
C5116
Q5046
R5066
10/63
C5026
D5006 1.2K
R5106
10/50 R5176
MTZJ5.6B 100K
100
R5076 R5086 -51.7V -52.2V
DZ-5.6BSB
(1/4W)
NC 470
E F
TO NAAF-8523 TO NAAF-8523
P5503A
53.0V
R5183
10
(1/4W)
P6003A
NF
-B1
+B1
B+
B-
R5203
NC
R5193
10
(1/4W)
-53.0V
53.0V
R5184
10
(1/4W)
P6004A
NF
-B1
+B1
B+
B-
R5204
NC
R5194
10
(1/4W)
-53.0V
53.0V
R5185
10
(1/4W)
P6005A
NF
-B1
+B1
B+
B-
R5205
NC
R5195
10
(1/4W)
-53.0V
53.0V
R5186
10
(1/4W)
JL6006A
NF
-B1
+B1
B+
B-
R5206
NC
R5196
10
(1/4W)
-53.0V
G
P5504A
P5019
FL R5160
R5110 100 (1/4W)
52.5V
1K
R5090
Q5030
100K
52.0V
1.1V
51.5V
C5030
-0.1V NC
C5100
C5050
10/63
C5010 Q5010 47/50
R5000 Q5000 C5080
47/50 0V
1K 040C R5030
R5010
R5020 120K
C5000 56K 330
-0.65V R5050
101K
4.7K R5230 120K
C5040
R5130
C5090
220/16 -1.1V
22K
Q5050
101K
-47.5V
R5040 2.2K
-48.1V
C5110 Q5040
R5060
C5020 10/63
D5000 1.2K
R5100 10/50
R5170
MTZJ5.6B
100K
-51.7V -52.2V 100
R5070 R5080
DZ-5.6BSB
NC 470 (1/4W)
R5161
FR
100 (1/4W)
R5111
1K 52.5V
R5091
Q5031
100K
52.0V
1.1V
51.5V
C5031
-0.1V NC
C5101 C5051
10/63 47/50
C5011
R5001 Q5001 Q5011 C5081
47/50 0V
1K 040C R5031
R5011 R5021 120K
C5001
56K 330
-0.65V
R5051
101K
4.7K C5041 R5231 120K
220/16
R5131
22K C5091
Q5051
-1.1V
101K
R5041 2.2K -47.5V
-48.1V
C5111 Q5041
R5061
C5021 10/63
D5001 1.2K
R5101 10/50
R5171
MTZJ5.6B
100K
R5071 R5081 -51.7V -52.2V 100
DZ-5.6BSB
NC 470 (1/4W)
R5162
C
100 (1/4W)
R5112
52.5V
1K
R5092
Q5032
100K
52.0V
1.1V
C5032 51.5V
NC
-0.1V
C5102
C5052
10/63
R5002 C5012 Q5002 Q5012 C5082 47/50
1K 10/50 0V 040C
R5032
R5012
R5022 120K
56K
C5002 330
-0.65V
R5052
101K
4.7K C5042 R5232 120K
220/16
R5132
C5092
18K
Q5052 101K
-1.1V
-47.5V
R5042 2.2K
-48.1V
C5112
Q5042
R5062 10/63
C5022
D5002 1.2K
R5102 10/50 R5172
MTZJ5.6B
100K -52.2V 100
R5072 R5082 -51.7V
DZ-5.6BSB
(1/4W)
NC 470
U18
DRIVER AMPLIIER PC BOARD
TX-SR503/503E/8350
H
53.0V
R5180
10
(1/4W)
P6000A
NF
-B1
+B1
B+
B-
R5200
22K
R5190
10
(1/4W)
-53.0V
53.0V
R5181
10
(1/4W)
P6001A
NF
-B1
+B1
B+
B-
R5201
22K
R5191
10
(1/4W)
-53.0V
53.0V
R5182
10
(1/4W)
P6002A
NF
-B1
+B1
B+
B-
R5202
NC
R5192
10
(1/4W)
-53.0V
NAAF-8540