Integra DTR-7.8 Service Manual page 21

A B
Q Q
3 7 6 3 1 5 1 5 0
SCHEMATIC DIAGRAMS-4 (SD-4)
POWER AMPLIFIER SECTION-2
NAAMP-9062
U17 POWER AMP
1
FRONT R
PC BOARD
6
5
4
3
2
1
2
SURROUND BACK
R
6
5
4
3
2
1
T E
L 1 3 9 4 2 2 9 6 5 1 3
3
SURROUND R
6
5
4
3
2
1
4
CENTER
6
5
4
3
2
1
w w w
5
.
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C D
TO NAAF-9039
SD-5:F3
P6350A
+65V
+B1R
P6081
1
0.22(1/2W)
P6051
1
R6331
IPRO
L6001
Q6081
2SC5242
R6351 Q6051
+0.6V 0.22(1/2W) 2SC5242
R6181
R6081
R6151
R6161
10(1/4W) 12K
100 100
(1/4W) (1/4W)
0.0V
P6071 SPR
NFR ID+ ID-
R6651 R6661
-0.6V
10(1/4W) 100 47K
100
R6091 (1/4W) R6211
(1/4W) VPRO
Q6061
0.22(1/2W)
2SA1962 R6231
VOLH
Q6091
R6341
L6011 2SA1962 47K
D6001
1SS133
R6361
1
P6061
0.22(1/2W)
1
-65V P6091
-B1R
+B1SBR +65V
P6086
0.22(1/2W) 1
P6056
1
R6336
IPRO
L6006
R6356 Q6086
2SC5242
Q6056
0.22(1/2W)
+0.6V 2SC5242
R6186
R6086
R6156 R6166
10(1/4W)
12K
100 100
(1/4W) (1/4W)
0.0V
P6076
SPSBR
ID+
NFSBR ID-
100 100
(1/4W) (1/4W)
-0.6V
10(1/4W) R6656 R6666 47K
R6096 R6216
VPRO
Q6066
0.22(1/2W)
2SA1962 R6236
Q6096 VOLH
R6346
L6016 2SA1962
D6006 47K
1SS133
R6366
1
P6066
0.22(1/2W) 1
-65V P6096
-B1SBR
+65V
+B1SR
P6084
1
0.22(1/2W)
P6054
R6334 1
IPRO
L6004
R6354 Q6084
2SC5242
0.22(1/2W) Q6054
+0.6V 2SC5242
R6184
R6084
R6154
10(1/4W) R6164
12K
100 100
(1/4W) (1/4W)
0.0V
P6074 SPSR
NFSR ID+ ID-
100 100
(1/4W) (1/4W)
-0.6V
10(1/4W) 47K
R6654 R6664
R6094 R6214
VPRO
Q6064
0.22(1/2W)
2SA1962 R6234
VOLH
Q6094
R6344 2SA1962
L6014
D6004 47K
1SS133
R6364 1
P6064
0.22(1/2W)
1
P6094
-65V
-B1SR
+B1C +65V
P6082
0.22(1/2W) 1
P6052
1
R6332
IPRO
L6002
R6352
Q6082
2SC5242
Q6052
0.22(1/2W)
+0.6V 2SC5242
R6182
R6082
R6152 R6162
10(1/4W)
12K
100 100
(1/4W)
(1/4W)
0.0V
P6072
SPC
NFC ID+ ID-
100 100
(1/4W)
(1/4W)
-0.6V
10(1/4W)
R6652 R6662 47K
R6092 R6212
VPRO
Q6062
0.22(1/2W)
2SA1962
R6232 VOLH
Q6092
R6342
L6012 2SA1962
D6002 47K
1SS133
R6362
1
P6062
0.22(1/2W)
1
-65V P6092
-B1C
x a o u 1 6 3
y
i
JL6041B
TO NAAF-9039
SD-5:E3
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E
8
NAAMP-9061
U16
POWER AMP
FRONT L
PC BOARD
1
2
3
4
5
6
SURROUND BACK
L
1
2
3
4
5
6
Q Q
3 7 6 3 1 5
SURROUND L
1
2
3
4
5
6
c o
1
2
3
.
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
F G
2 4
9 9 8
TO NAAF-9039
SD-5:F3
+65V
+B1L
P6080
1
0.22(1/2W)
P6050
R6330 1
IPRO
L6000
R6350
Q6080
2SC5242
0.22(1/2W) Q6050
+0.6V 2SC5242
R6180
R6080
R6150
10(1/4W) R6160
12K
100 100
(1/4W) (1/4W)
0.0V
P6070 SPL
NFL ID+ ID-
100 100
(1/4W) (1/4W)
-0.6V
10(1/4W) R6660 47K
R6650
R6090 R6210
VPRO
Q6060
0.22(1/2W)
2SA1962
Q6090 R6230
VOLH
2SA1962
R6340
L6010
D6000 47K
1SS133
R6360 1
P6060
0.22(1/2W)
1
-65V P6090
-B1L
+65V
+B1SBL
P6085
0.22(1/2W) 1
P6055
1
R6335
IPRO
L6005
R6355
Q6085
2SC5242
0.22(1/2W) Q6055
+0.6V 2SC5242
R6185
R6085
R6155 R6165
10(1/4W)
12K
100 100
(1/4W) (1/4W)
0.0V
P6075
SPSBL
ID+
NFSBL ID-
100 100
(1/4W) (1/4W)
-0.6V
10(1/4W)
R6655 R6665 47K
R6095 R6215
VPRO
Q6065
0.22(1/2W)
2SA1962
R6235 VOLH
Q6095
R6345
L6015 2SA1962
D6005 47K
1SS133
R6365
1
1 5 0 8 9 2 4 9
P6065
0.22(1/2W) 1
P6095
-65V
-B1SBL
+65V
+B1SL
P6083
1
0.22(1/2W)
P6053
R6333 1
IPRO
L6003
R6353 Q6083
2SC5242
0.22(1/2W) Q6053
+0.6V 2SC5242
R6183
R6083
R6153
10(1/4W) R6163
12K
100 100
(1/4W) (1/4W)
0.0V
P6073 SPSL
NFSL ID+ ID-
100 100
(1/4W) (1/4W)
-0.6V
10(1/4W) R6663 47K
R6653
R6093 R6213 VPRO
Q6063
0.22(1/2W) 2SA1962
R6233
VOLH
Q6093
R6343
L6013 2SA1962 47K
D6003
1SS133
R6363
1
P6063
0.22(1/2W)
1
-65V P6093
-B1SL
P6042A
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
m
VOLTAGE (MEASURED WITH VOLTMETER)
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 (
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.
DTR-7.8
H
2
9 9
P6340A
8 2 9 9
! ARE CRITICAL FOR SAFETY.
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.