Table of Contents
Advertisement
A
B
SCHEMATIC DIAGRAMS-2 (SD-2)
POWER AMPLIFIER SECTION-1
1
2
3
4
NOTE
THE COMPONENTS IDENTIFIED BY MARK
!
ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
BOLD 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
5
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.
C
NACLA-9493
U13
AMPLIFIER PC BOARD
Front L ch
+63.9V
+56.6V
+62.1V
+54.8V
+62.1V
-62.4V
+54.8V
-55.1V
R5000
C5010
R5020
5
0V
6
-61.3V
1.5K
47/50
330
-54.0V
-0.9V
R5040
1K
-58.8V
-62.7V
-51.5V
-55.5V
-63.9V
-56.6V
Surround L ch
+63.9V
+56.6V
+62.1V
+54.8V
+62.1V
-62.4V
+54.8V
-55.1V
C5013
R5023
5
R5003
0V
6
-61.3V
1.5K
47/50
330
-54.0V
-0.9V
R5043
1K
-58.8V
-62.7V
-51.5V
-55.5V
-63.9V
-56.6V
Surround
Back L ch
+63.9V
+56.6V
+62.1V
+54.8V
+62.1V
-62.4V
+54.8V
-55.1V
R5005
C5015
R5025
5
0V
-61.3V
6
1.5K
47/50
330
-54.0V
-0.9V
R5045
1K
-58.8V
-51.5V
-62.7V
-55.5V
-63.9V
-56.6V
E5509B
DC voltages in two lines indicate
the difference by models.
+xx.xV
TX-SR806,DTR-7.9
+yy.yV
TX-SR706,DTR-6.9
D
E
R5180
10
(1/4W)
33K
R5030
NFL
7
+B1L
4
R5230
NC
-B1L
3
1.2V
+BL
2
-BL
1
-1.2V
(1/4W)
10
R5190
R5183
10
(1/4W)
33K
R5033
NFSL
7
+B1SL
4
R5233
NC
-B1SL
3
1.2V
+BSL
2
-BSL
1
-1.2V
(1/4W)
10
R5193
R5185
10
(1/4W)
33K
R5035
NFSBL
7
R5235
+B1SBL
4
NC
-B1SBL
3
1.2V
+BSBL
2
-BSBL
1
-1.2V
(1/4W)
10
R5195
E5507B
F
G
Center ch
+63.9V
R5182
+56.6V
10
(1/4W)
+62.1V
+54.8V
+62.1V
-62.4V
33K
+54.8V
-55.1V
R5032
47/50
R5002
C5012
5
R5022
NFC
7
0V
6
-61.3V
+B1C
4
1.5K
330
R5232
-54.0V
NC
-B1C
3
1.2V
+BC
2
-BC
1
-0.9V
R5042
1K
-58.8V
-1.2V
-62.7V
-51.5V
-55.5V
(1/4W)
10
-63.9V
R5192
-56.6V
Front R ch
+63.9V
R5181
+56.6V
10
(1/4W)
+62.1V
+54.8V
+62.1V
-62.4V
33K
+54.8V
-55.1V
R5031
47/50
R5001
C5011
R5021
5
0V
NFR
7
-61.3V
6
1.5K
330
R5231
+B1R
4
-54.0V
NC
-B1R
3
1.2V
+BR
2
-BR
1
-0.9V
R5041
1K
-1.2V
-58.8V
-51.5V
-62.7V
-55.5V
(1/4W)
10
-63.9V
R5191
-56.6V
Surround R ch
+63.9V
R5184
+56.6V
10
(1/4W)
+62.1V
+54.8V
+62.1V
-62.4V
33K
+54.8V
-55.1V
R5034
47/50
R5004
C5014
R5024
5
0V
NFSR
7
-61.3V
6
1.5K
330
R5234
+B1SR
4
-54.0V
NC
-B1SR
3
1.2V
+BSR
2
-BSR
1
-0.9V
R5044
1K
-1.2V
-58.8V
-51.5V
-62.7V
-55.5V
(1/4W)
10
-63.9V
R5194
-56.6V
Surround
Back R ch
+63.9V
R5186
+56.6V
10
(1/4W)
+62.1V
+54.8V
+62.1V
-62.4V
33K
+54.8V
-55.1V
R5036
47/50
R5006
C5016
R5026
5
0V
NFSBR
7
-61.3V
6
1.5K
330
R5236
+B1SBR
4
-54.0V
NC
-B1SBR
3
1.2V
+BSBR
2
-BSBR
1
-0.9V
R5046
1K
-58.8V
-1.2V
-62.7V
-51.5V
-55.5V
(1/4W)
-63.9V
10
R5196
-56.6V
TX-SR806/SA806
H
DC voltages in two lines indicate
the difference by models.
+xx.xV
TX-SR806,DTR-7.9
+yy.yV
TX-SR706,DTR-6.9
Hide quick links:
Advertisement
Table of Contents
