Onkyo TX-SR674E Service Manual page 18

A
SCHEMATIC DIAGRAM-2(SD-2)
POWER AMP SECTION-1
NAAF-8911 (2/2)
U15
1
AMPLIFIER PC BOARD
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
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.
2
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)
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
3
4
NAPS-8912
U16
SEC. TERMINAL-2 PC BOARD
P15-P19 : Power Trans S1 terminal
P6904B(GRN)
P6900B(BLK)
P6903B(YEW)
5
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
B
POWER TRANSISTOR LIST
TYPE Q6050-56 Q6060-66
D,W,G,PA MN130S MP130S
PP,PB 2SC5242 2SA1962
! ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
PRINTING SIDE
VOLH
SEC1H
GNDS1
+22V
PROTECT
R6701
2SC2712-GR
22K Q6703
2SA1163-BL 2SC2712-GR
Q6702 Q6701
P6903B
Q6707
2SC2712-GR
S1H+
S1H-
P6904B
F6901
1 S1L+
1
2 2
12A 250V
3 3
4
4
F6902
S1L-
12A 250V
FROM AUDIO SECTION
(SD-1:F5)
C
R6902
1K
GND_AMP
4 1
RL6901
3 2
D6901
3 2
4 1
D10XB60H
RL6902
D10XB60H
D6903
CAPACITOR RATING
TX-SR674/674E/8467
Center ch
5
NF
4
-B1
3
+B1
2
+B
1
-B
R6040
2K
Front L ch
5
NF
4
-B1
3
+B1
2
+B
1
-B
R6041
2K
Front R ch
5
NF
4
-B1
3
+B1
2
+B
1
-B
R6042
2K
P6901A
+54.5V
P6011A (COPPER BUS PLATE)
-54.5V
P6902A
MODEL
C6901,C6902
D 10000uF/63V 1
2
10000uF/69V 3
P, W, G
4
5
6
7
D
54.5V
+B1C
Q6030
1.1V
+BC
2SC5171 or
R6020
2SC5993
Q605
2.2 (1/4W)
LIST
R6080
1.0V
0.6V
0.22
R614
(1/4W)
22K
-0.3V
NFC
R6100
2
ID+
0.22(5
1
ID-
P6080
Q606
R6090
-0.4V
LIST
-0.6V
0.22
R61
(1/4W)
47K
D600
-BC
KDS4
Q6040
-1.1V
2SA1930 or
2SA2140
-B1C
-54.5V
54.5V
+B1L
Q6031
1.1V
+BL
2SC5171 or
R6021
2SC5993
Q605
2.2 (1/4W)
LIST
R6081
1.0V
0.6V
R614
0.22
22K
(1/4W)
-0.3V
R6101
NFL
0.22(5
2
ID+
1
ID-
P6081
Q606
R6091
-0.4V
LIST
-0.6V
0.22
R61
(1/4W)
47K
D600
-BL
Q6041
KDS4
-1.1V
2SA1930 or
2SA2140
-B1L
-54.5V
54.5V
+B1R
Q6032
1.1V
+BR
2SC5171 or
R6022
2SC5993
Q6052
2.2 (1/4W)
LIST
R6082
1.0V
0.6V
0.22
R6142
(1/4W)
22K
-0.3V
NFR
R6102
2
0.22(5
ID+
1
ID-
P6082
Q606
R6092
-0.4V
LIST
-0.6V
0.22
R61
(1/4W)
47K
D600
-BR
KDS4
Q6042
-1.1V
2SA1930 or
2SA2140
-B1R
-54.5V
TO NAVD-8922(2/2)
(SD-5:H1)
JL6603A
R613
8.2
C603
473
CSP
LSP
RSP
SLSP
SRSP
SBLSP
SBRSP