Onkyo TX-SR503 Service Manual page 21

A
SCHEMATIC DIAGRAMS-4
POWER AMPLIFIER SECTION-2
Refer to following table about the parts displayed by mark "
1
Transistors
CIRCUIT NO. DESCRIPTION
Q6010 - 6015 2SC1740S-S
Q6020 - 6025
2SC1740S-S
Q6030 - 6032 2SC5171, 2SC5993-Q, P
Q6033 - 6035 2SC5171, KTD2061-Y
Q6040 - 6042
2SA1930, 2SA2140-Q, P
Q6043 - 6045 2SA1930, KTB1369-Y
Q6050 - 6052
2SC5198-O, R
Q6053 - 6055
KTC5242A-O, R, MN130S-Y, O, P
2SA1941-O, P
Q6060 - 6062
Q6063 - 6065 KTA1962A-O, R, MP130S-Y, O, P
Q6070 - 6075 2SC2240-GR, BL
2 Q6701, 6702 2SC2240-GR, BL, KTC3200-GR, BL
Q6703 KTA1268-BL, GR, 2SA992-E, F
2SA1123-R
Q6901 KTC3199-GR, 2SC2458-GR,
2SC1740S-R, S
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.
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.
3
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC=No mount of parts.
4
5
B
".
! ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
C
NAAF-8523
U05
AMPLIFIER PC BOARD (2/2)
R6023 2.2
SL
(1/4W)
R6033
1.0V
470 1.1V
R6003
5.6K
R6013
3.9K
NF
-B1
-0.3V
+B1
B+
IDLING
Q6023
B- R6043
ADJ.
2K
-0.4V
R6053
3.3K
-1.1V
-53.0V
R6024 2.2
SR
(1/4W)
R6034
470
1.0V
1.1V
R6004
5.6K
R6014
3.9K
NF
-B1
-0.3V
+B1
B+
IDLING
B-
R6044 Q6024
ADJ.
2K
-0.4V
R6054
3.3K
-1.1V
-53.0V
R6025 2.2
(1/4W)
R6035
SBL
470
1.0V 1.1V
R6005
5.6K
R6015
3.9K
NF
-B1
-0.3V
+B1
B+
IDLING
B- Q6025
R6045
ADJ.
2K
-0.4V
R6055
-1.1V
3.3K
-53.0V
J011 J011A
J010 J010A
D6904, 6905 : D10XB60H
D6905 D6904
C6901
8200/63
C6902
8200/63
C6903
102J
F6901
!
P6906 10A /125V
JL6951A
NC
NC
TX-SR503/503E/8350
D
Q6033
53.0V
R6163
R6083
33K
0.22
Q6053
(1/4W)
R6143
0.6V
0.6V
22K
P6083
R6073
120
R6103
ID+
(1/4W)
0.22 X2
ID-
(2W)
R6153
-0.6V 12K
C6043
47/50
C6053
Q6063
-0.6V
NC
R6193
R6093
220K
0.22
(1/4W)
Q6043
Q6034
53.0V
R6164
R6084
0.22 33K
Q6054
(1/4W)
R6144
0.6V
0.6V 22K
P6084
R6074
120
R6104 ID+
(1/4W)
0.22 X2
ID-
(2W)
R6154
12K
-0.6V
C6044
47/50
C6054
-0.6V
Q6064
NC
R6194
R6094
220K
0.22
(1/4W)
Q6044
53.0V
Q6035
R6165
R6085
33K
0.22
Q6055
(1/4W)
R6145
0.6V 0.6V
22K
P6085
R6075
220
R6105 ID+
(1/4W)
0.22 X2
ID-
(2W)
R6155
12K
-0.6V
C6045
47/50
C6055
-0.6V
Q6065
NC
R6195
R6095
220K
0.22
(1/4W)
Q6045
!
RL6902
F6902
10A /125V
D6906
RL6901
P997
P995
P996
TO NAPS-8524
TO NAPS-8524
Q6073
D6003
R61
47
R6183
47K
C6233
473J
R6233
8.2 (1W)
Q6074
D6004
R6174
R6184
47K
47K
R6234
8.2(1W)
C6234
473J
Q6075
D6005
R6175
R6185
47K
47K
R6235
8.2(1W)
C6235
473J
C6920
NC
R6902
1K
Q6901
JL6952A