Onkyo TX-SR674, Service Manual

Page: 20 / 127

SCHEMATIC DIAGRAM-3(SD-3)
POWER AMP SECTION-2
TX-SR674/674E/8467
A
1
2
3
4
5
B C D
NFC
-BC
-B1C
+B1C
+BC
NFL
-BL
-B1L
+B1L
+BL
NFR
-BR
-B1R
+B1R
+BR
NFSL
-BSL
-B1SL
+B1SL
+BSL
NFSR
-BSR
-B1SR
+B1SR
+BSR
NFSBL
-BSBL
-B1SBL
+B1SBL
+BSBL
NFSBR
-BSBR
-B1SBR
+B1SBR
+BSBR
Surround L ch
Surround R ch
Surround Back
R ch
Surround Back
L ch
Center ch
Front L ch
Front R ch
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
0V
-0.65V
+53.8V
-53.8V
-52.9V
+52.3V
-48.2V
1.1V
-1.1V
P6011B COPPER BUS PLATE
P5503A P5504A
1 2 3 4
5 6 7 8 9
10 11 12 13
P5019
R5050
4.7K
R5110
1K
R5020
330
R5100 100K
R5060
1.2K
R5080
470
R5230
120K
C5080
040D
C5090
101K
R5180
(1/4W)
10
R5190
(1/4W) 10
C5000
221K
C5010
47/50
+
R5010
56K
R5040 2.2K
R5090
100K
D5000
MTZJ5.6B
C5020
10/50
+
R5000
1K
R5030
120K
C5100
22/100
+
C5110 22/100
+
C5040
220/25
+
R5160 (1/4W)
100
R5170
(1/4W)
100
C5050
47/50
+
R5130
18K
R5200
18K
P6000A
5
4
3
2
1
Q5010
2SC2240-BL
Q5000 2SC2240-BL
Q5050
2SC2240-BL
Q5030
2SA949Y
Q5040
2SC2229-Y
R5051
4.7K
R5111
1
K
R5021
330
R5101 100K
R5061
1.2K
R5081
470
R5231
120K
C5081
040D
C5091
101K
R5181
(1/4W)
10
R5191
(1/4W) 10
C5001 221K
C5011
47/50
+
R5011
56K
R5041
2.2K
R5091
100K
D5001
MTZJ5.6B
C5021
10/50
+
R5001
1K
R5031
120K
C5101
22/100
+
C5111
22/100
+
C5041
220/25
+
R5161
(1/4W)
100
R5171 (1/4W)
100
C5051 47/50
+
R5131
18K
R5201
18K
P6001A
5
4
3
2
1
Q5011
2SC2240-BL
Q5001 2SC2240-BL
Q5051
2SC2240-BL
Q5031
2SA949Y
Q5041
2SC2229-Y
R5052
4.7K
R5112
1K
R5022
330
R5102 100K
R5062
1.2K
R5082
470
R5232
120K
C5082
040D
C5092
101K
R5182
(1/4W) 10
R5192
(1/4W) 10
C5002
221K
C5012
47/50
+
R5012
56K
R5042
2.2K
R5092
100K
D5002 MTZJ5.6B C5022
10/50
+
R5002
1K
R5032
120K
C5102
22/100
+
C5112
22/100
+
C5042
220/25
+
R5162
(1/4W)
100
R5172
(1/4W)
100
C5052 47/50
+
R5132
18K
R5202
18K
P6002A
5
4
3
2
1
Q5012
2SC2240-BL
Q5002
2SC2240-BL
Q5052
2SC2240-BL
Q5032
2SA949Y
Q5042
2SC2229-Y
R5053
4.7K
R5113
1K
R5023
330
R5103 100K
R5063
1.2K
R5083
470
R5233
120K
C5083
040D
C5093
101K
R5183
(1/4W)
10
R5193
(1/4W) 10
C5003 221K
C5013
47/50
+
R5013
56K
R5043
2.2K
R5093
100K
D5003 MTZJ5.6B
C5023
10/50
+
R5003
1K
R5033
120K
C5103
22/100
+
C5113
22/100
+
C5043
220/25
+
R5163
(1/4W)
100
R5173 (1/4W)
100
C5053
47/50
+
R5133
22K
R5203
22K
P6003A
5
4
3
2
1
Q5013
2SC2240-BL
Q5003
2SC2240-BL
Q5053
2SC2240-BL
Q5033
2SA949Y
Q5043
2SC2229-Y
R5054
4.7K
R5114
1K
R5024
330
R5104 100K
R5064
1.2K
R5084
470
R5234
120K
C5084
040D
C5094
101K
R5184
(1/4W) 10
R5194
(1/4W) 10
C5004 221K
C5014
47/50
+
R5014
56K
R5044
2.2K
R5094 100K
D5004
MTZJ5.6B
C5024
10/50
+
R5004
1K
R5034
120K
C5104
22/100
+
C5114
22/100
+
C5044
220/25
+
R5164 (1/4W)
100
R5174
(1/4W)
100
C5054
47/50
+
R5134
22K
R5204
22K
P6004A
5
4
3
2
1
Q5014
2SC2240-BL
Q5004
2SC2240-BL
Q5054
2SC2240-BL
Q5034
2SA949Y
Q5044
2SC2229-Y
R5055
4.7K
R5115
1K
R5025
330
R5105
100K
R5065
1.2K
R5085
470
R5235
120K
C5085
040D
C5095
101K
R5185
(1/4W)
10
R5195
(1/4W) 10
C5005
221K
C5015
47/50
+
R5015
56K
R5045 2.2K
R5095
100K
D5005
MTZJ5.6B C5025
10/50
+
R5005
1K
R5035
120K
C5105
22/100
+
C5115
22/100
+
C5045
220/25
+
R5165
(1/4W)
100
R5175 (1/4W)
100
C5055 47/50
+
R5135
22K
R5205
22K
P6005A
5
4
3
2
1
Q5015
2SC2240-BL
Q5005
2SC2240-BL
Q5055
2SC2240-BL
Q5035
2SA949Y
Q5045
2SC2229-Y
R5056
4.7K
R5116
1K
R5026
330
R5106 100K
R5066
1.2K
R5086
470
R5236
120K
C5086
040D
C5096
101K
R5186
(1/4W) 10
R5196
(1/4W)
10
C5006
221K
C5016
47/50
+
R5016
56K
R5046 2.2K
R5096 100K
D5006
MTZJ5.6B
C5026
10/50
+
R5006
1K
R5036
120K
C5106
22/100
+
C5116
22/100
+
C5046
220/25
+
R5166
(1/4W)
100
R5176
(1/4W)
100
C5056
47/50
+
R5136 22K
R5206
22K
P6006A
5
4
3
2
1
Q5016
2SC2240-BL
Q5006
2SC2240-BL
Q5056
2SC2240-BL
Q5036
2SA949Y
Q5046
2SC2229-Y
NAAF-8917
U19
DRIVER AMPLIFIER PC BOARD
TO NAAF-8911(1/2)
(SD-1:G4)
TO NAAF-8911(2/2) (SD-2:D3)
TO NAAF-8911(2/2) (SD-2:D2)
TO NAAF-8911(2/2) (SD-2:D1)
TO NAAF-8911(2/2) (SD-2:F1)
TO NAAF-8911(2/2) (SD-2:F2)
TO NAAF-8911(2/2) (SD-2:F3)
TO NAAF-8911(2/2) (SD-2:F4)
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
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.