Block Diagram Display Section - Sony STR-DE475 - Fm Stereo/fm-am Receiver Service Manual

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