Schematic Diagram - Display Board, Power Key Board - Sony STR-K890 Service Manual

4-16. SCHEMATIC DIAGRAM – DISPLAY BOARD, POWER KEY BOARD –
1 2 3
A
B
C
D
E
F
G
POWER KEY BOARD
S115
R111
SPESKERS
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
STR-K890
• See page 38, 39 for IC Block Diagrams.
4 5 6 7
DISPLAY BOARD
2 5 6 7 8 9
R197
1.8
1/4 W
MUTING +
11G
S101 S109
10G
TUNING
R108
R101
220
220
AUTO CAL -
S102 S110
R109
R102
330 330
INPUT MODE TUNING MODE
9G
S103 S111
8G
R103 R110
470 470
7G
DISPLAY MEMORY/ENTER
6G
S104 S112
5G
R104
680
4G
MUSIC
3G
S105
2G
R105
1k
1G
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
CL063
TUNING-JOG-A 4
CL064
TUNING-JOG-B 5
8 9 10 11
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
C148 10 50V JW103
10
C144
0.1
33 32 31 30 29 28 27 26 25 24 23
-17.1 -13.5 9P
34 GRID9 SEG9 22
-17.1 -16.9 8P
35 GRID8 SEG8 21
-17.1 -16.9 7P
36 GRID7 SEG7 20
-17.1 -13.6
6P
37 GRID6 SEG6 19
-17.1 -12 5P
38 GRID5 SEG5 18
IC100
-17.1 -15.5 4P
39 GRID4 FL DRIVE SEG4 17
-17.1 -12.2 3P
40 GRID3 SEG3 16
IC100 JW105
-17.2 -15.6 2P
PT6315 12.5
41 GRID2 SEG2 15
-17.1 -10.7 1P
42 GRID1 SEG1 14
5 IC B/D 5
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
29 29
12 13 14
FL101
(FLORESCENT INDICATOR TUBE)
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53
R198
1.8
JW102
CL030
10
C145 C147
220p
0.1
RV102
14 13 12 11 10 9 8
MASTER VOLUME
IC B/D IC101
IC101
TC74ACT08P
BUFFER
1 2 3 4 5 6 7
IC103
2
REMOTE
INPUT CONTROL
SELECTOR RECEIVER
RV101
IC103
NJL24H400A
C149 C164
220p 220p
JW106
5.0
JW108
5.0
JW107
5.0
R117
100
R116
100
STR-K890
15 16 17
CN108
4P
CL029
1 F1
CL028 M
3 F2
MAIN BOARD
4 -20V
(4/4)
CNS101
CL046 CNP507
19P
1 TUNING-JOG-A
(Page 27)
CL047
2 TUNING-JOG-B
3 NC
4 GND
CL003
5 GND
CL001
6 +3.3V(STBY)
CL002
7 +5V
CL010
8 VOL_JOG(2A) H
CL011
9 VOL_JOG(2B)
DIGITAL BOARD
R120
10 PW-SW
10
(4/5)
1/4 W
11 SIRCS
CNS514
C114
12 AD2 (Page 21)
0.1
13 AD1
C165 14 FL-LAT
10
50V
15 FL-DIN
16 FL-CLK
17 INPUT JOG 4A
1 3
18 INPUT JOG 4B
CL042
19 DCAC IN
CNP106
2P
1 DCAC IN
R
2 DCAC IN
CL004
DCAC BOARD
CN2000
(Page 33)
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