Block Diagram Display Section - Sony STR-K402 Service Manual

STR-K402
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
Q008 Q009
SETUP LED 4
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
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
?/1
SYSTEM
RV102
POWER
MASTER
VOLUME
Q707 D706
D731
OVER LOAD
DETECT
Q708,709
CURRENT
DETECT
Q705,706
Q659
OVER LOAD D606 D735
DETECT
Q657,658
CURRENT
D506
DETECT
Q655,656
D734
OVER LOAD
DETECT
Q507,509
CURRENT
DETECT
Q505,506
D721
D736
PROTECT
SWITCH
Q722,723,725
IC401(2/2)
7
55
IC101
REMOTE
1
SIRCS 57 CONTROL
RECEIVER
VCC 23
VCC 84
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
DRIVE C
SPEAKERS
Q610
CENTER
RY550
RELAY
DRIVE
Q550
J253
SUB WOOFER
AUDIO OUT
RY560
RELAY
DRIVE
Q560
POWER AMP
-B SW
-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
+7V REG
D109
2 IC802
AUDIO -7V
3 2
-7V REG
D110
+5.6V REG
Q951
RESET
3
POWER
8 CONTROL 5
IC950
6
T901
D802
FL1
FL2
F901
T902
D910-913
AC
IN
D914 D915
RY901
RELAY
DRIVE
Q901