SCHEMATIC DIAGRAMS-4 (SD-4)
POWER AMPLIFIER SECTION-2
TX-SR876/SA876
A
1
2
3
4
5
B
C
D
E
F
G
H
+B
-B
NFL
-B1L
+B1L
SPL
NFSBL
-B1SBL
+B1SBL
SPSBL
NFSL
-B1SL
+B1SL
SPSL
NFR
-B1R
+B1R
SPR
NFSBR
-B1SBR
+B1SBR
SPSBR
NFSR
-B1SR
+B1SR
SPSR
NFC
-B1C
+B1C
SPC
+B PO
WER SUPPL
Y
-B PO
WER SUPPL
Y
(COPPERB
US PLA
TE)
+B PO
WER SUPPL
Y
-B PO
WER SUPPL
Y
(COPPER B
US PLA
TE)
FRONT L
SURROUND BACK
L
SURROUND L
SURROUND R
SURROUND BACK
R
FRONT R
CENTER
VO
L
H
VPR
O
IPR
O
VO
L
H
VPR
O
IPR
O
NAAMP-9062
NAAMP-9061
T
O NA
CLA-9064
SD-3:D2
T
O NA
CLA-9063
SD-3:H2
T
O NA
CLA-9068
SD-3:H3
T
O NA
CLA-9066
SD-3:H4
TO NAAF-9039
SD-5:F3
TO NAAF-9039
SD-5:F3
T
O NA
CLA-9069
SD-3:D3
T
O NA
CLA-9067
SD-3:D4
T
O NA
CLA-9065
SD-3:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
T
O NA
TRM-9055
SD-7:D5
TO NAAF-9039
SD-5:E3
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
ID-
ID+
IPRO
VPRO
VOLH
P6250A
P6250D
P6250B
P6250C
P6240C
P6240B
P6240A
P6042A
3
2
1
JL6042B
1
2
3
JL6041B
When VOLH turns high,
the unit goes into
Protect Mode.
1
2
3
P6350B
P6350C
P6340B
P6340C
P6030A
6
5
4
3
2
1
P6035A
6
5
4
3
2
1
P6033A
6
5
4
3
2
1
P6031A
6
5
4
3
2
1
P6036A
6
5
4
3
2
1
P6034A
6
5
4
3
2
1
P6032A
6
5
4
3
2
1
P6350A
1
2
P6340A
1
2
R6230
47K
R6210
47K
R6170
33K
Q6070
2SC2240
R6660
R6160
R6150
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
R6650
C6040
223J
R6340
R6360
R6350
R6330
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
P6070
1
R6090
R6180
12K
L6000
L6010
R6400
0.22(5W)
R6410
0.22(5W)
D6000
1SS133
R6080
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
R6190
5.6K
P6050
2SC5242
1
P6080
2SC5242
1
P6060
2SA1962
1
P6090
2SA1962
1
R6235
47K
R6215
47K
R6175
33K
Q6075
2SC2240
R6665
R6165
R6155
R6655
C6045
223J
R6345
R6365
R6355
R6335
P6075
1
R6095
R6185
12K
L6005
L6015
R6405
0.22(5W)
R6415
0.22(5W)
D6005
1SS133
R6085
R6195
5.6K
P6055
2SC5242
1
P6085
2SC5242
1
P6065
2SA1962
1
P6095
2SA1962
1
R6233
47K
R6213
47K
R6173
33K
Q6073
2SC2240
R6663
R6163
R6153
R6653
C6043
223J
R6343
R6363
R6353
R6333
P6073
1
R6093
R6183
12K
L6003
L6013
R6403
0.22(5W)
R6413
0.22(5W)
D6003
1SS133
R6083
R6193
5.6K
P6053
2SC5242
1
P6083
2SC5242
1
P6063
2SA1962
1
P6093
2SA1962
1
R6231
47K
R6211
47K
R6171
33K
Q6071
2SC2240
R6661
R6161
R6151
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
100
(1/4W)
R6651
C6041
223J
R6341
R6361
R6351
R6331
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
0.22(1/2W)
P6071
1
R6091
R6181
12K
L6001
L6011
R6401
0.22(5W)
R6411
0.22(5W)
D6001
1SS133
R6081
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
10(1/4W)
R6191
5.6K
P6051
Q6051
2SC5242
1
P6081
Q6081
2SC5242
1
P6061
Q6061
2SA1962
1
P6091
Q6091
2SA1962
1
R6236
47K
R6216
47K
R6176
33K
Q6076
2SC2240
R6666
R6166
R6156
R6656
C6046
223J
R6346
R6366
R6356
R6336
P6076
1
R6096
R6186
12K
L6006
L6016
R6406
0.22(5W)
R6416
0.22(5W)
D6006
1SS133
R6086
R6196
5.6K
P6056
2SC5242
1
P6086
2SC5242
1
P6066
2SA1962
1
P6096
2SA1962
1
R6234
47K
R6214
47K
R6174
33K
Q6074
2SC2240
R6664
R6164
R6154
R6654
C6044
223J
R6344
R6364
R6354
R6334
P6074
1
R6094
R6184
12K
L6004
L6014
R6404
0.22(5W)
R6414
0.22(5W)
D6004
1SS133
R6084
R6194
5.6K
P6054
2SC5242
1
P6084
2SC5242
1
P6064
2SA1962
1
P6094
2SA1962
1
R6232
47K
R6212
47K
R6172
33K
Q6072
2SC2240
R6662
R6162
R6152
R6652
C6042
223J
R6342
R6362
R6352
R6332
P6072
1
R6092
R6182
12K
L6002
L6012
R6402
0.22(5W)
R6412
0.22(5W)
D6002
1SS133
R6082
R6192
5.6K
P6052
2SC5242
1
P6082
2SC5242
1
P6062
2SA1962
1
P6092
2SA1962
1
U16
POWER AMP
PC BOARD
U17
POWER AMP
PC BOARD
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
+65V
-65V
+0.6V
-0.6V
0.0V
Q6056
Q6086
Q6066
Q6096
Q6054
Q6084
Q6064
Q6094
Q6052
Q6082
Q6062
Q6092
Q6050
Q6080
Q6060
Q6090
Q6055
Q6085
Q6065
Q6095
Q6053
Q6083
Q6063
Q6093
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
