SCHEMATIC DIAGRAMS-2
DISPLAY SECTION
TX-SR502/E/8250/HT-R520TX-SR502/E/8250/HT-R520
A
1
2
3
4
5
BCDEFGH
P7502A
F2
F2
NP
NP
P35
P34
P33
P32
P31
P30
P29
P28
P27
P26
P25
P24
P23
P22
P21
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
16G
15G
14G
13G
12G
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
1G
NP
NP
F1
F1
Q7501 HNA-16MM39T
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
JL7501B
JL7501A
JL7502A
JL7502B
S7638
FM MODE
S7637
CD
S7614
TONE
S7627
MEMORY
S7625
DIGITAL
INPUT
S7624
DISPLAY
S7626
----
S7647
SET UP
S7616
SP B
S7617
SP A
S7615
STANDBY
S7645
TUNING<
S7644
TUNING>
S7643
ENTER
S7642
PRESET<
S7641
PRESET>
S7646
RETURN
S7635
TAPE
S7634
VIDEO3
S7633
VIDEO2
S7632
VIDEO1
S7631
DVD
ADJUST
S7636
TUNER
S7623
LISTEN
MODE>
S7622
LISTEN
MODE<
S7621
MULTI
CH
S7613
TONE-
S7612
TONE+
S7611
P7503A
P999
NC
S7501
E7501
Q7504
RN2403
KRA103S
U7501
PIC-3704TH2
L7505
220K
NCH1477Z
L7504
220K
NCH1477Z
Q7502
UPD780232GC-030
21:ANI1
21
22:ANI0
22
41:P45/FIP37
41
42:P44/FIP36
42
43:P43/FIP35
43
61:FIP19
61
ANI220
ANI319
AVDD24
AVSS18
FIP0
80
FIP1 79
FIP10 70
FIP11 69
FIP12 68
FIP13 67
FIP14 66
FIP15 65
FIP16 64
FIP17 63
FIP18 62
FIP2 78
FIP20 58
FIP21 57
FIP22 56
FIP23 55
FIP3 77
FIP4 76
FIP5 75
FIP6 74
FIP7 73
FIP8 72
FIP9 71
IC5
P01/INTP116
P02/TI17
P20/SCK314
P21/SO313
P2212
P2311
P24/BUSY10
P25SO19
P26/SI18
P27/SCK17 P30/FIP24 54
P31/FIP25 53
P32/FIP26 52
P33/FIP27 51
P34/FIP28 50
P35/FIP29 49
P36/FIP30 48
P37/FIP31 47
P40/FIP32 46
P41/FIP33 45
P42/FIP34 44
P46/FIP3840
P47/FIP3939
P50/FIP4038
P51/FIP4137
P52/FIP4236
P53/FIP4335
P54/FIP4434
P55/FIP4533
P56/FIP4632
P57/FIP4731
P60/FIP4830
P61/FIP4929
P62/FIP5028
P63/FIP5127
P64/FIP5226
POO/INTP015
VDD025
VDD11
VDD2 59
VLOAD 60
VSS023
VSS12
X13
X24
RESET6
P7501
PHONES
R7637 3.9K R7636 2.2K
R7613
560
R7626
2.2K
R7625
1.2K
R7624
820
R7623 560
R7646 2.2K
R7513
220
R7531
220
R7616
1.2K
R7615
820
R7524 1K
R7617
2.2K
R7641 330R7645 1.2K R7644 820 R7643 560 R7642 470
R7631
330
R7632
470
R7633 560R7634 820R7635 1.2K
R7621
330
R7622
470
R7612
470
R7611
330
Q7507
RN1402
KRC102S
Q7506
RN1402
KRC102S
X7501
CST5.00MGW
Q7503
2SC2712
KTC3875
R7580
10K X 15
D7504
PURE AUDIO
D7505
STANDBY
D7501
UDZ8.2B
D7502
UDZ5.1B
D7507
1SS352
D7503
1SS352
C7521
220/6.3
C7514
100/6.3
C7502
33/50
C7523 102J
C7522 101J
C7511 102J
C7513 104Z
C7515
104Z
C7516
104Z
C7517
102J
C7519
102J
C7520
102J
C7518
102J
C7508 102J
C7509 102J
C7506
104Z
C7501
104Z
C7503 104Z
C7507
104Z
C7505
473Z
C7504
473Z
C7510 102J
R7504 47k
R7514
4.7K
L7503
L7502
L7501
R7512 10K
R995
NC
R996
NC
R997
NC
R998
NC
R999
10K
R7516 10K
R7519
100K
R7518
100K
R7515 10K
R7507 4.7K
R7517 1K
R7503
10K
R7520 2.7K
R7521 2.7K
R7501 220
R7502 220
R7506 4.7K
R7532
10K
R7527 10K
R7526 10K
R7530 1K
R7529 560
R7528 560
R7508 4.7K
R7509 4.7K
R7510 1K
R7511 1K
R7522 2.7K
R7523 2.7K
R7505
220K
G[11]
G[1]
G[16]
P[1]
G[2]
G[3]
G[4]
G[5]
G[6]
G[7]
G[8]
G[9]
G[10]
G[12]
G[13]
G[14]
G[15]
P[28]
P[32]
P[35]
P[2]
P[3]
P[4]
P[5]
P[6]
P[7]
P[8]
P[9]
P[10]
P[11]
P[12]
P[13]
P[14]
P[15]
P[16]
P[17]
P[18]
P[19]
P[20]
P[21]
P[22]
P[23]
P[24]
P[25]
P[26]
P[27]
P[29]
P[30]
P[33]
P[34]
P[31]
P[35]
P[34]
P[33]
P[32]
P[31]
P[30]
P[29]
P[28]
P[27]
P[26]
P[25]
P[24]
P[23]
P[22]
P[21]
P[20]
P[19]
P[18]
P[16]
P[15]
P[14]
P[13]
P[12]
P[10]
P[9]
P[8]
P[7]
P[6]
P[5]
P[4]
P[3]
P[2]
P[1]
P[11]
P[17]
G[1;16]
G[3]
G[14]
G[13]
G[12]
G[11]
G[9]
G[8]
G[7]
G[6]
G[5]
G[4]
G[16]
G[15]
G[10]
G[2]
G[1]
SYSOUT
IRF
VAJ
VBJ
STBYLED
SYSIN
SBMLDY
SBMDI
SBMDO
SBMCLK
SBMRST
K3
K1
K2
K0
K0
K1
K2
K3
GND
KEY0
HPDET
GND
HPL
HPE
HPR
SYSIN
HPDET
SBMLDY
SBMDI
SBMDO
SBMCLK
SBMRST
-VP
+5.6S
FAC2
FAC1
HPR
HPE
HPL
GND
GND
NAETC-8233
NASW-8232
NADIS-8231
TO NAETC-8238
TO NADG-8230
U02
DISPLAY PC
BOARD
U03
OPERATION
SWITCH
PC BOARD
MASTER VOLUME
U04
HEAD PHONE TERMINAL
PC BOARD
R7581 100k X 14
S7611
MDD, MDC TYPE --- STEREO
EXCEPT MDD, MDC TYPE --- PURE AUDIO
<Notes>
NC=No mount of parts.
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 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.
R7582
NC
100K X 13
NC
NC
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