Block Diagram Display Section - Sony STR-K402 Service Manual
Fm stereo fm-am receiver
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Also See for STR-K402:
- Service manual (36 pages) ,
- Operating instructions manual (52 pages) ,
- Limited warranty (1 page)
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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
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