Schematic Diagram - Display, Ir, Led, Key Function And Key Power Board - Sony STR-KS370 Service Manual

STR-KS370

5-20. SCHEMATIC DIAGRAM - DISPLAY, IR, LED, KEY FUNCTION AND KEY POWER Board -

1 2 3
A IR BOARD
CN750 R750
6P 22
CL751
SIRCS 1
CL752
DGND 3
CL753
R757
DGND 4
2.2k
CL754
VOL JOG 5
CL755
R753
+3.3V STBY 6
10k
R752
22k
B
R754 C756
4.7k 0.01
C
D
LED BOARD
CN752
R381
3P
47
D380
R380
3.3
SL-194S-WS-SD-T 10
Q380
RT1N141C-TP-1
LED DRIVE 0
0
E
F
G
H
I
KEY POWER BOARD
CN301
6P
CL302
1 ADKEY1 Display
2 DGND Display
R301
3 CHASIS GND
S301
1k
CL300
4 Power SW
J 5 ADKEY Selector
C300 C301
D301
0.1 0.1
MC2837 6 DGND Selector
CL305
C302 0.1
STR-KS370
4 5 6
IC750
REMOTE
1
CONTROL RECEIVER
IC750
GP1UE274RKC1
C755
0.01
5 4
3.4
VCC
3 2
3.4
OUT
RV750
GND
ROTARY ENCODER
MASTER
R755
VOLUME
4.7k
R756
C751
22
10
DISPLAY BOARD
R701
3.9k
C700
C729
47
0.1
16V 9
CNP704
3P R711
CL718 100
1 WHITE_LED WHITE LED 1
Q701
CL719
CPH5504-TL-E
2 +3.3V +3.3V 2
CL717 OSC
3 DGND DGND 3
CNP701
6P
CL702
SIRCS 1
CL703
DGND 2
CL727
DGND 3
CL713
VOL JOG 4
CL726
STBY +3.3V 5
CNP703
3P
CL724
POWER SW 1
CL720
ADKEY1 3
CL722
DGND 4
L702 47uH
CNS701
13P
CL705
+5V 13
CL706
FLGND 12
CL707
DGND 11
CL708
+3.3V 10
CL700
STBY +3.3V 9
CL711
ADKEY1 8
E
CL710
VOL JOG 7
CL712
SIRCS 6
CL725
MAIN
POWER SW 5
BOARD CL716
FL DATA 4
(3/5) CL715
CEC STBY LED 3
CNS700
CL714
FL LAT 2
(Page 21)
CL721
FL CLK 1
KEY FUNCTION BOARD
S350
INPUT SELECTOR -
CN750
2P
CL350
ADKEY1 1
CL351
R352
DGND 2
1k
(CHASSIS)
C350 C353
0.1 0.1
• See page 10 for Waveforms. • See page 33 for IC Block Diagrams.
7 8 9
L700
47uH
T700
DC/DC
10 CONVERTER
2 1
C701 C702
-0.2
0.022 4700p
3
5.8
-1
5.8
-2 4 9
-0.2
5 8
6 7
R703
D728
MAZ8062G0LS0
D729
SML78423C-TP15
DISPLAY INDICATOR
C703
0.01
Q700 Q702
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
1.9 0
LED DRIVE LED DRIVE
0
3.3
3.1 3.4
R712 R700 R713 R714
100 47 100 100
C709
0.1
S351 S352
SOUND FIELD INPUT SELECTOR +
R350 R351
2.2k 2.2k
C351 C352
0.1 0.1
30 30
10 11 12
FLUORESCENT INDICATOR TUBE
R702
33k 47
C728
0.1
C704 C706 -18.2
C705
33 33 SEG9
0.1 -20.3
35V 35V
SEG8
-11.5
SEG7
-15.9 IC700
SEG6
-27.0
SEG5
-27.0 FLUORESCENT INDICATOR TUBE
SEG4
DRIVER
-27.0
SEG3
IC700
-18.2
SEG2
HT16515
-24.8
SEG1
3.3
VDD
VSS
0 2.3
3.0 3.2
C708
10
50V
R708 100
R706 100
R707 100
13 14 15
FL700
C713
220p
C715
220p
-25.0
C716 220p
GRID9
-25.0 C717 220p
GRID8
-25.0
C718 220p
GRID7
-25.0 C719 220p
GRID6
-25.0 C720 220p
GRID5
-25.0 C721 220p
GRID4
-25.0 C722 220p
GRID3
-25.0
C723 220p
GRID2
-25.0 C724 220p
GRID1
3.3
VDD
VSS
C707
0.1
3.3 3.3
R705
100k