Onkyo TX-SR502E Service Manual page 22

A
QQ
3 7 63 1515 0
SCHEMATIC DIAGRAMS-2
DISPLAY SECTION
1
2
TE
L 13942296513
3
4
www
5
.
http://www.xiaoyu163.com
B
NADIS-8231
U02
DISPLAY PC
BOARD
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
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 ( ) ARE IN u F/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.
IS DC VOLTAGE, AT NO INPUT SIGNAL.
<Notes>
NC=No mount of parts.
MASTER VOLUME
U03
OPERATION
SWITCH
PC BOARD
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http://www.xiaoyu163.com
2 9
8
IS DC VOLTAGE.(NO INPUT SIGNAL)
R7582
NC
100K X 13
SYSOUT
Q7504
D7502
RN2403
UDZ5.1B KRA103S
D7503
1SS352
Q Q
R7505
3 6 7 1 3 1 5
220K
U7501
PIC-3704TH2
R7514
4.7K
Q7507
RN1402
KRC102S
S7501
S7617 S7616 S7615
SP A SP B STANDBY
GND
KEY0
R7617 R7616
R7615
2.2K
1.2K 820
NASW-8232
R7637 3.9K
co
.
TX-SR502/E/8250/HT-R520
C
9 4 2 8
R7581 100k X 14
NC
40 P46/FIP38
39 P47/FIP39
38 P50/FIP40
37 P51/FIP41
36 P52/FIP42
35 P53/FIP43
34 P54/FIP44
33 P55/FIP45
32 P56/FIP46
31 P57/FIP47
UPD780232GC-030
30 P60/FIP48
29 P61/FIP49
28 P62/FIP50
27 P63/FIP51
26 P64/FIP52
25 VDD0
C7507
24 AVDD
104Z 22:ANI0
23 VSS0
21:ANI1
R7506 4.7K
22
R7507 4.7K
0 5 8 21 2 9 9 4 2 8
D7505
STANDBY
Q7506
RN1402
KRC102S
S7611
MDD, MDC TYPE --- STEREO
EXCEPT MDD, MDC TYPE --- PURE AUDIO
R7613
560
R7625 R7624
R7626 2.2K
1.2K 820
R7623 560
m
R7636 2.2K R7635 1.2K R7634 820 R7633 560
R7646 2.2K R7645 1.2K R7644 820 R7643 560
D
9 9
Q7501 HNA-16MM39T
6
FIP18 6
61:FIP19
FIP17 6
FIP16 6
FIP15 6
FIP14 6
FIP13 6
FIP12 6
FIP11 6
Q7502
FIP10 7
FIP9 7
FIP8 7
FIP7 7
FIP6 7
FIP5 7
FIP4 7
FIP3 7
FIP2 7
FIP1 7
FIP0 8
9 9
X7501
CST5.
R7612 R7611
470 330
R7622 R7621
470
330
470 330
R7632 R7631
R7642 470 R7641 330