Schematic Diagram - Display Board, Power Key Board - Sony STR-K990 Service Manual

STR-K990
Q Q
4-16. SCHEMATIC DIAGRAM – DISPLAY BOARD, POWER KEY BOARD –
3 7 6 3 1 5 1 5 0
1 2 3
A
B
C
D
E
T E
L 1 3 9 4 2 2 9 6 5 1 3
F
G
POWER KEY BOARD
S115
R111
SPEAKERS
680
(OFF/A/B/A+B)
1 AD1
2 PW_SW
/
3 GND
H
S100
4 TUNING-JOG-A
5 TUNING-JOG-B
CN103
5P
w w w
STR-K990
• See page 41 for IC Block Diagrams.
4 5 6 7
DISPLAY BOARD
2 5 6 7 8 9 10
R197
2.7
MUTING +
11G
S101 S109
10G
TUNING
R101 R108
220
220
AUTO CAL -
S102 S110
R109
R102
330 330
INPUT MODE TUNING MODE
9G -17.1
S103 S111
-17.1
8G
R110
R103
470
470
7G -17.1
DISPLAY MEMORY/ENTER
6G -17.1
S104 S112
5G -17.1
R104
680
4G -17.1
MUSIC
3G -17.1
S105
2G -17.2
R105
1k
1G -17.1
MOVIE
S106
R106
1.5k
A.F.D
S107
R107
2.2k
2CH
S108
CN104
5P
CL022
AD1 1
CL023
PW_SW 2
CL024
GND 3
TUNING-JOG-A 4
TUNING-JOG-B 5
x a o
. i
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8 9 10 11
(FLUORESCENT INDICATOR TUBE)
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
C148 10 50V JW103
10
C144
0.1
33 32 31 30 29 28 27 26 25 24 23
14
-13.5 9P
34 GRID9 SEG9 22 IC B/D
-16.9
8P
35 GRID8 SEG8 21
-16.9 7P
36 GRID7 SEG7 20
-13.6 6P
37 GRID6 SEG6 19 1
-12 5P
38 GRID5 SEG5 18
IC100
Q Q -15.5 4P
39 GRID4 SEG4 17
FL DRIVE 3 7
-12.2 3P
40 GRID3 SEG3 16
IC100 JW105
-15.6 2P
12.5
PT6315
41 GRID2 SEG2 15
-10.7 1P
42 GRID1 SEG1 14
C149
5 IC B/D 5
220p
43 VDD VDD 13
44 VSS VSS 12
C160
0.1
C162
0.1
1 2 3 4 5 6 7 8 9 10 11 C115
10
50V
R118
82k
C112 C111 C110
220p 220p 220p
R115
100
u 1 6 3
y
30 30
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2 4
8 9 9
12 13 14
FL101
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53
R198
2.7
JW102
CL030
10
C147
C145
220p
0.1
RV102
13 12 11 10 9 8
MASTER VOLUME
IC101
IC101
TC74ACT08P
BUFFER
2 3 4 5 6 7
IC103
2 1
REMOTE
INPUT CONTROL
6 3 1 5 1 5 0 SELECTOR RECEIVER 8 9
RV101
IC103
NJL24H400A
C164
220p
JW106
5.0
JW108
5.0
JW107
5.0
R117
100
R116
100
m
c o
.
2
8 9 9
15 16 17
CN108
4P
CL029
1 F1
CL028 M
3 F2
MAIN BOARD
4 -20V
(4/4)
CNP507
(Page 28)
CNS100
17P
CL066
1 NC
2 GND
CL003
3 GND
CL001
4 +3.3V(STBY)
CL002
+5V
5
CL010
H
6 VOL_JOG(2A)
CL011
7 VOL_JOG(2B)
DIGITAL
R120
8 PW-SW
10
BOARD
1/4 W
9 SIRCS
(4/5)
C114 CNS513
10 AD2
0.1
(Page 22)
11 AD1
12 FL-LAT
C165
10
50V
FL-DIN
13
14 FL-CLK
15 INPUT JOG 4A
3
16 INPUT JOG 4B
CL042
17 DCAC IN
2 4 9 8 2 9 9
CNP106
2P
1 DCAC IN
R
2 DCAC IN
CL004
DCAC BOARD
CN2000
(5pin)
(Page 34)
No mark:FM