Schematic Diagram - Display Board, Power Key Board; Q Q - Sony STR-K995 Service Manual

Q Q

4-17. 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-K995
• See page 44 for IC Block Diagrams.
4 5 6
DISPLAY BOARD
2 5
R197
2.7
MUTING +
S101 S109
TUNING
R101 R108
220
220
AUTO CAL -
S102 S110
R109
R102
330 330
INPUT MODE TUNING MODE
S103 S111
R110
R103
470
470
DISPLAY MEMORY/ENTER
S104 S112
R104
680
MUSIC
S105
R105
1k
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
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y
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7 8 9 10
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
C148 10 50V JW103
11G
C144
0.1
10G
33 32 31 30 29 28 27 26 25 24 23
9G -17.1 -13.5 9P
34 GRID9 SEG9 22
-17.1 -16.9
8G 8P
35 GRID8 SEG8 21
7G -17.1 -16.9 7P
36 GRID7 SEG7 20
6G -17.1 -13.6 6P
37 GRID6 SEG6 19
5G -17.1 -12 5P
38 GRID5 SEG5 18
IC100
4G -17.1 Q Q -15.5 4P
39 GRID4 SEG4 17
FL DRIVE 3 7 6
3G -17.1 -12.2 3P
40 GRID3 SEG3 16
IC100
2G -17.2 -15.6 2P
PT6315
41 GRID2 SEG2 15
1G -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
Q110
R131
C112 C111
2SC1740S-QRT
2.2K
220p 220p
LCD SW
3.6
0
D105
SELK5E20C-DTP15
R122
u 1 6 3
31 31
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2 4
8 9 9
11 12 13 14
FL101
(FLUORESCENT INDICATOR TUBE)
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53
R198
2.7
JW102
CL030
C147
C145
220p
0.1
RV102
14 13 12 11 10 9 8
MASTER VOLUME
IC101
IC B/D
IC101
TC74ACT08P
BUFFER
1 2 3 4 5 6 7
IC103
REMOTE
INPUT CONTROL
3 1 5 1 5 0 8 SELECTOR 9 RECEIVER 2
RV101
JW105
C149 C164
220p 220p
JW108
JW107
C110
220p R117
100
R116
100
R115
100
75
m
c o
.
STR-K995
2
8 9 9
15 16 17
CN108
4P
1 F1
M
CL029
2 NC
CL028
MAIN BOARD
3 F2
(4/4)
4 -20V
CNP507
(Page 29)
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
9 SIRCS
(5/5)
C114 CNS511
10 AD2
0.1
(Page 24)
11 AD1
12 FL-LAT
C165
10
50V
FL-DIN
13
14 FL-CLK
15 INPUT JOG 4A
2 1 3
16 INPUT JOG 4B
CL042
17 DCAC IN
4 9 8 2 9 9
CNP106
2P
IC103
NJL24H400A
1 DCAC IN
R
2 DCAC IN
CL004
DCAC BOARD
CN2000
JW106
(5pin)
(Page 35)
No mark:FM