Read Sony STR-DE475 Service Manual online
10
10
STR-DE475
3-3. BLOCK DIAGRAM – DISPLAY SECTION –
RESET
Q100,101
Q659
• Signal Path
• R-CH is omitted due to same as L-CH.
: FM
IN2
8
12
+V OUT2
POWER AMP
IC701
9
NF2
LIMITER
Q701
11
-V OUT2
LIMITER
Q702
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
OVER LOAD
DETECT
Q708,709
IN1
6
2
+V OUT1
5
NF1
LIMITER
Q651
3
-V OUT1
LIMITER
Q652
BOOSTER
Q653
BOOSTER
Q654
CURRENT
DETECT
Q655,656
IN+
1
6
+V OUT
POWER AMP
IC501
2
IN-
LIMITER
Q501
5
-V OUT
LIMITER
Q502
BOOSTER
Q503
BOOSTER
Q504
CURRENT
DETECT
Q505,506
OVER LOAD
DETECT
Q507,509
OVER LOAD
DETECT
Q657,658
Q707
D706
D606
D506
D721
PROTECT
SWITCH
Q722,723,725
RELAY
DRIVE
Q791
RY791
RELAY
DRIVE
Q730
RY730
D731
RELAY
DRIVE
Q610
RY601
D735
RELAY
DRIVE
Q550
RY550
D734
IC401(2/2)
5
7
RELAY
DRIVE
Q560
RY560
D736
L
R
SR
SL
C
R-CH
R-CH
R-CH
SPEAKERS
FRONT
PHONES
SPEAKERS
SURROUND
SPEAKERS
CENTER
TM601
TM602
J253
58
PROTECT
15
H/P RY
10
SP A RY
14
REAR RY
12
CTR RY
13
WOOFER RY
LED DRIVE
Q008
RV102
VOL ENCODER
1
3
VOL A
1
VOL B
2
PW KEY IN
56
POWER
ON/OFF
ON/OFF
S150
77
RESET
47
STOP
57
SIRCS
REMOTE
CONTROL
RECEIVER
2
1
IC101
POWER
CONTROL
IC950
5
8
3
6
+5.6V REG
Q951
D110
D109
D910-913
AC
IN
IN
T902
RY901
D915
D914
RELAY
DRIVE
Q901
D820-823
84
VCC
23
VCC
-7V
REG
3
2
+7V
REG
3
1
+5V
REG
3
1
+5V
REG
3
1
+5V
REG
3
1
AUDIO
+5V
LED
+5V
+5V
AUDIO
+7V
AUDIO
-7V
TUNER,RDS
VIDEO
+5V
IC807
IC803
IC804
IC801
IC802
POWER RY
8
RELAY
+B
+12V
REG
3
1
TUNER
+12V
IC806
-30V REG
Q801
FL201
-30V
-B SW
Q691
POWER AMP
-B
D898
D802
T901
POWER AMP
+B
240V
220V
120V
0V
VOLTAGE
SELECTOR
E MODEL
S901
82
83
X0
X1
X101
16MHz
FL1
FL2
L
SL
SL
C
SW
A
VCC
13
VCC
14
+B
9
POWER
MUTING
Q747,748
29
AC MUTING
J791
FLUORESCENT
INDICATOR TUBE
FL101
16
FL DAT
17
FL CLK
18
FL LAT
7
DIN
8
CLK
9
STB
14 29
SEG1-16
42 31
GRID1-12
FL1
FL2
2
LEVEL LED
3
NAME LED
1
SUR LED
4
SETUP LED
FL/LED DRIVE
IC103
D007-010
3
BLU LED
LED DRIVE
Q009
4
DCS LED
5
AFD LED
7
MODE LED
6
2CH LED
+5V
D011
D014
D002
D003
D004
FUNCTION
KEY
AD KEY IN1
38
S110,112,113
S115-118
S121,122
S121,122
S100-103
S105-109
S105-109
FUNCTION
KEY
AD KEY IN2
39
FUNCTION
KEY
AD KEY IN3
40
S111,114,120
S123-129
FUNCTION
KEY
AD KEY IN4
41
S104
S131-136
52
HSTX
D101
B
RESET
D824-827
VIDEO
+9.2V
VIDEO
-12V
E MODEL
SYSTEM CONTROL
IC102(2/2)
55
HP SW
EXCEPT E MODEL
SUB WOOFER
AUDIO OUT
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