Onkyo TX-SR804 Service Manual page 25

A B
SCHEMATIC DIAGRAM-2 (SD-2)
POWER AMP SECTION-1
NOTE
THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR SAFETY
1
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>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
NAETC-8680
U05 THERMAL DETECTOR
2 PC BOARD
Q6380 LM61CIZ
1
3
G V
JL703A
TO NAAR-8997
SD-7:E1
VOLH
SEC1H
GNDRL
+22V
2SA1162-GR
3
R6701
2SC2712-GR
22K
Q6703
2SA1163-BL 2SC2712-GR
Q6702
PROTECT
GNDDG
HPE
HPR
HPL
4
P6903B
1 GND
2
3 S1H+
4
5 S1H-
6
7 S1L+
8
9 S1L-
10
P6904B
5
C
NAAF-8678 (2/2) AMPLIFIER PC BOARD
U04
Front L ch
2SC1740S_S
Q6000
+1.1V
-0.6V
1 NFL
2 -BL
3 +BL
4 L+
5 L-
2SC1740S_S
Q6010
R6040
2K
Front R ch
2SC1740S_R
Q6001
+1.1V
-0.6V
1 NFR
2 -BR
3 +BR
4 R+
5 R-
2SC1740S_R
R6041
2K
Q6011
Center ch
Q6704
2SC1740S_R
Q6002
+1.1V
Q6701
-0.6V
1 NFC
2 -BC
3 +BC
4 C+
5 C-
2SC1740S_R
R6042
2K
Q6012
UDZS5.1B
R6902
P6901A
Q6707 1K
2SC2712-GR
+B
RL6901
4 1
D10XB60H
3 2
D6901
1 P6991
3 2 4
+57.2V
1
P6900B
4 1 -57.2V
RL6902
F6901B F6901A
D10XB60H
D6903
2 -B
1
4
P6902A
3
1 LSPE
2 RSPE
F6902B F6902A
3 CSPE
4 SLSPE
5 SRSPE
6 SBLSPE
7 SBRSPE
8 RLGND
9 +22V
R6180 390 (1/2W)
R6181 390 (1/2W) 1 LSP
2 RSP
3 CSP
4 SLSP
TO NAETC-9001
5 SRSP
SD-7:E2 6 SBLSP
7 SBRSP
D E
2.2
(1/4W)
+1.1V
Q6030
R6120
2SC5171
MN150S
R6080
+0.6V Q6050
2SC2229-Y
0.22 Q6070
R6140
(1/4W)
22K
P6080
R6100
2
ID+
0.22(5W)
1
ID-
1 (1/4W)
R6090
Q6060
MP150S
-0.6V
R6190
47K R6210
2SA1930
Q6040
-1.0V 47K
D6000
KDS4148U
2.2
(1/4W)
+1.1V Q6031
2SC5171
R6121
0.22
MN150S
+0.6V (1/4W) Q6051 2SC2229-Y
R6081 Q6071
R6141
22K
R6101
2
ID+ 0.22(5W)
1
ID-
P6081
1
(1/4W)
R6091 Q6061
MP150S
-0.6V
R6191
47K R6211
2SA1930
Q6041
-1.0V 47K
D6001
KDS4148U
P6902B
2.2
+1.1V (1/4W)
Q6032
2SC5171
R6122
0.22
MN150S
+0.6V (1/4W)
Q6052
2SC2229-Y
R6082 R6142 Q6072
22K
R6102
2
ID+ 0.22(5W)
1
ID-
P6082
0.22
(1/4W)
R6092
Q6062
-0.6V MP150S
R6192
47K R6212
2SA1930
Q6042
-1.0V 47K
D6002
KDS4148U
P6911B
F G
-57.2V
+57.2V
Surround
2.2
L ch (1/4W)
+1.1V
Q6033
2SC1740S_R 2SC5171
R6123
Q6003 0.22
MN150S
(1/4W)
+1.1V +0.6V
Q6053
R6083
R6143
22K
-0.6V
1 NFSL
2 -BSL R6103
2
3 +BSL ID+
0.22(5W)
1
4 SL+ ID-
5 SL-
P6083
0.22
2SC1740S_R (1/4W)
R6043 R6093
Q6063
2K MP150S
-0.6V
R6193
Q6013
R6213
2SA1930 47K
Q6043
-1.0V 47K
D6003
KDS4148U
Surround
2.2
R ch
(1/4W)
+1.1V Q6034
2SC1740S_R 2SC5171
R6124
Q6004 0.22 Q6054
+0.6V (1/4W) MN150S
+1.1V
R6084
R6144
22K
-0.6V
1 NFSR
2 -BSR R6104
2
3 +BSR ID+ 0.22(5W)
1
4 SR+ ID-
5 SR-
P6084
0.22
2SC1740S_R (1/4W)
R6094
R6044
Q6064
2K
-0.6V MP150S
R6194
Q6014
R6214
2SA1930 47K
Q6044
-1.0V 47K
D6004
KDS4148U
Surround
2.2
Back L ch
+1.1V (1/4W)
Q6035
2SC1740S_R 2SC5171
R6125
Q6005 0.22
MN150S
+0.6V (1/4W)
+1.1V Q6055
R6085
R6145
22K
-0.6V
1 NFSBL
2 -BSBL R6105
2
3 +BSBL ID+ 0.22(5W)
1
4 SBL+
ID-
5 SBL- P6085
0.22
(1/4W)
2SC1740S_R
R6045 R6095
Q6065
2K MP150S
-0.6V
Q6015 R6195
47K R6215
2SA1930
Q6045
-1.0V 47K
D6005
1SS352
NCAF-8682
+1.1V R6126
Q6036
U07
2SC1740S_R 2SC5171
2.2
Q6006
(1/4W) 0.22 2SC5359_O
SURROUND BACK
+0.6V (1/4W)
+1.1V Q6056
2SC2631R
AMPLIFIER
R6086
R6146
PC BOARD
22K
-0.6V
1 NFSBR
2 -BSBR R6106
2
3 +BSBR ID+ 0.22(5W)
1
4 SBR+ ID-
5 SBR- P6086
2SC1740S_R 0.22
R6046 (1/4W)
Q6066
1K
2SA1987_O
-0.6V
R6096
Q6016
2SA1930
Q6046
-1.0V
Surround
Back R ch
TX-SR804/804E
H
Q6073
2SC2229-Y
Q6074
2SC2229-Y
Q6075
1 1
2 2
3 3
4 4
5 5
Q6076
R6196
47K R6216
47K
D6006
KDS4148U