Onkyo TX-SR503 Service Manual page 33

A B
SCHEMATIC DIAGRAMS-8
VIDEO SECTION
NAVD-8539
1
U17 VIDEO PC BOARD
2
VIDEO OUT
C1517
2.2/50
P2005A
+12V
DGND
V4
COMPB
COMPA
VCTRLA
TO NADG-8514
VCTRLB
VMUTV1
VMUTMON
SPRLZ2
SPRLSB
3
SPRLCS
SPRLLF
VIDEO OUT
4
VIDEO OUT
Q1515 Q1516
RN1241 RN1241
5
C
C1501
2.2/50
R1507
VIN4 9
Q1501
680K
RN1241
R1505
VIN3 8
75
C1503
7
VCC
D1502
470/16
D1501
6
VIN2
C1520 223Z
GND 5
R1508
C1502
R1510
680K
2.2/50
220
VIN1 4
C1521
R1509 C1504
B 3 Q1504
47/25 680K 2.2/50
2SA933-S
C1522
2 KTA1267-GR
A
NC R1506
1
75
Q1502
C1505
RN1241 470/16
R1530
680K
DTA114ES
KRA102M
R1523
100K
Q1505
R1524
Q1506 100K
DTA114ES
KRA102M
C1506 223Z
C1524
C1507 2.2/50
NC
VIN4 9
R1525
C1523
Q1507
680K
VIN3 8 RN1241
47/25
C1510
7
VCC
223Z
R1519 75
R1528
VIN2 6
220
R1520
C1511
75
470/16
GND 5
Q1508
VIN1 4
C1508
RN1241
Q1509
223Z
2SA933-S
B 3
KTA1267-GR
C1509 2.2/50
A 2
R1526
680K
1
C1512 223Z
VIN4 9
C1526
C1513 2.2/50
NC
VIN3 8
C1525
RN1241
47/25
Q1510
R1527
VCC 7
680K
Q1511
VIN2 6
RN1241 C1514 R1521 75
223Z
R1522 75
GND 5
C1515
VIN1 4
470/16
B 3
A 2
1
Q1517 Q1518
RN1241 RN1241
JL2006A
TO NAETC-8537
D E
COMPONENT
P1505
VIDEO
R1531 75
C1518 1/50
CR
(PR)
R1532 75 C1519
C1527
223Z
1/50
VIDEO CB
(PB)
R1533 75
R1501
VIDEO 2
C1528
Y
75 IN
1/50
OUT R1534 75
C1529
1/50
CR
P1503
VIDEO 1
(PR) R1535 75
C1530
1/50
IN
CB
75
(PB)
R1536 75
R1502
DVD IN
Y
75
C1531
1/50
R1503
MONITOR
R1537 75
C1532
CR 1/50
R1504
(PR)
100K
R1538 75
C1533
Q1514
CB 1/50
2SC1815
R1546 56
(PB)
R1539 75
R1547 C1534
C1540
NC 1/50
47/25
Y
R1529 C1543
560
103Z
D1503
MTZ5.6B
S VIDEO
P1501
Y C
VIDEO 2
IN
Y C
OUT
VIDEO 1
P1503
Y C
IN
Y C
DVD IN
P1504
Y C
MONITOR
C1516
103Z
F G
J1511
J1509
J1512 Q1521
RN1241 C1537
470/6.3
Q1522 C1538
470/6.3
RN1241
C1539
470/6.3
Q1523
RN1241
Q1519
C1535 NJM2585L
100/16
C1536
223Z
NOTE
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>
NC=No mount of parts.
TX-SR503/503E/8350
H
P1506
COMPONENT
R1540
VIDEO
75
R1543
CR
(PR)
R1541 100K
OUT
R1544 CB
75
(PB)
100K
R1542
75
Y
R1545
100K
C1542
103Z
NC
P242A
NC