SONY STR K502P SCHEMATIC DIAGRAM
– DISPLAY/POWER SECTION –
STR-DE575/K502/K502P
• R-CH is omitted due to same as L-CH
• Signal Path
FL101
FLUORESCENT
INDICATOR TUBE
FL1 FL2
14 29
42 31
SEG1-16
GRID1-12
DIN8CLK9STB
7
BUFFER
IC101
61
62
DIN
CLK63STB
X1
X0
82 83
X1601
20.0MHz
: FM
: CD(ANALOG)
: DVD (DIGITAL)
LED DRIVE
IC100
LEVEL LED
NAME LED
SUR LED
SETUP LED
38
FUNCTION
KEY
S100-117
R-CH
POWER AMP
IC701
+V OUT2
12
L
SLSL
A
C
SW
POWER
MUTING
D106-109
2
3
1
4
D100-105
LED DRIVE
Q100-105
40
32
31
30
25
29
EQ LED
AFD LED
2CH LED
DCS LED
MODE LED
MULTI CH LED
AD0
AD1
39
FUNCTION
KEY
S101-103,
S105-107
40
FUNCTION
KEY
S118-125
Q747,748
22
AC MUTING
AD2
AD3
41
FUNCTION
KEY
S128-137
8
IN2
-V OUT2
6
IN1
1
MUTING
-V OUT1
POWER AMP
IC501
+V OUT
1
IN+
67
68
PROTECT
SYSTEM CONTROL
IC1601(3/3)
JOG+
JOG-
58
57
3 1
ENCODER
RV101
JOG
DIAL
NF2
9
11
2+V OUT1
NF1
5
3
6
IN-
2
5-V OUT
72
FRONT RY
HEADPHONE RY
3 1
ENCODER
RV102
MASTER
VOLUME
70
VOL+60VOL-
LIMITER
Q701
LIMITER
Q702
LIMITER
Q651
LIMITER
Q652
LIMITER
Q501
LIMITER
Q502
REAR RY
59
71
CENTER RY
BOOSTER
Q703
BOOSTER
Q704
BOOSTER
Q653
BOOSTER
Q654
BOOSTER
Q503
BOOSTER
Q504
69
WOOFER RY
POWER KEY
56
S138
?/1
IC601
21
POWER RY
66
D731
D733
D734
IC601
57
SIRCS
AVCC
VCC3
VCC5
RESET
STOP
BUFFER
54
Q1603
35
84
23
77
47
RESET
B
AF POWER
PROTECT
CURRENT
DETECT
Q705,706
CURRENT
DETECT
Q655,656
CURRENT
DETECT
Q505,506
D721
PROTECT
SWITCH
IC401
5
Q722,723,725
7
Q740
AF POWER
PROTECT
Q640
AF POWER
PROTECT
Q540
26
HP DETECT
RELAY
DRIVE
Q790
RELAY
DRIVE
Q710
RELAY
DRIVE
Q610
RELAY
DRIVE
Q550
RELAY
DRIVE
Q560
RY791
RY701
RY601
RY501
RY560
RESET
Q1604,1605
1
IC102
REMOTE
CONTROL
RECEIVER
R-CH
R-CH
2
IC1904
+3.3V
3 1
REG
TM602
L
R
TM601
SR
SL
C
J405
D1911
AUDIO
OUT
+3.3V
TUNER
+3.3V
AUDIO
+5V
J791
PHONES
FRONT
SURROUND
CENTER
SUB
WOOFER
+3.3V REG
3 1
3 1
POWER AMP
Q471
IC803
+3.3V
REG
IC1503
+5V
REG
SPEAKERS
-B
FL101
-30V
RELAY
+B
AUDIO
+7V
AUDIO
-7V
VIDEO
+5V
VIDEO
-5V
TUNER
+12V
-B SW
Q691,692
-30V REG
Q801
+3.3V
+2.5V
+5V
IC801
+7V
1 3
REG
IC802
-7V
3 2
REG
IC807
+5V
3 1
REG
IC804
-5V
3 2
REG
IC806
+12V
3 1
REG
IC1901
+3.3V
3 1
REG
IC1902
+2.5V
3 1
REG
IC1903
+5V
3 1
REG
D802
+B
-B
+5.6V REG
Q1606
POWER
8
CONTROL
IC1605
D1901-1904
D820-823
3
6
D910-913
5
RELAY
DRIVE
Q901
D899
D898
T901
FL1
FL2
F901
T902
D915D914
RY901
JW903
AC
IN
1111
STR-DE575/K502/K502P
3-3. PRINTED WIRING BOARD – DIGITAL SECTION –
IC1102
• Semiconductor
Location
Ref. No. Location
D1001 B-10
D1101 B-2
D1501 C-9
D1502 C-9
D1601 F-1
D1602 G-2
D1901 G-7
D1902 G-7
D1903 F-7
D1904 F-7
D1911 G-3
D1912 F-8
D1913 E-3
D1914 E-8
IC1502
IC1552
IC1501
• See page 9 for Circuit Boards Location.
IC1103
IC1603
IC1101
IC1202
There are a few cases that the part printed on
this diagram isn’t mounted in this model.
IC1104
(Page 22)
IC1105
IC1106 IC1107
(Page 16)
IC1101 C-3
IC1102 B-1
IC1104 B-7
IC1105 B-8
IC1201 D-2
IC1202 C-3
IC1501 C-2
IC1502 C-1
IC1503 D-10
IC1552 C-1
IC1601 F-2
IC1603 B-4
IC1605 G-4
IC1901 F-8
IC1902 F-8
IC1903 G-8
IC1904 F-8
Q1601 F-1
Q1602 F-1
Q1603 G-2
Q1604 G-2
Q1605 G-2
Q1606 G-7
IC1601
IC1201
IC1605
IC1301
(Page 16)
(Page 24)
IC1901
IC1902
IC1904
IC1903
K502P : MY,SP,AUS
EXCEPT
AUS
IC1503
(Page 16)
(Page 20)
1212
STR-DE575/K502/K502P
3-4. SCHEMATIC DIAGRAM – DIGITAL SECTION (1/3) –
• See page 9 for Waveform. • See page 25 for IC Block Diagrams.
B/D
1313
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