Schematic Diagram - Display/Key Boards - Sony SCD-XB790 Service Manual

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3 7 6 3 1 5 1 5 0
5-20. SCHEMATIC DIAGRAM – DISPLAY/KEY Boards – •
S11
S10
T E
L 1 3 9 4 2 2 9 6 5 1 3
S9
R822
S8
2.2k
S7
S6
S812 S813
S5
TIME/TEXT SACD/CD
R821 R820
2.2k 1k
CN812 CN811
2P 2P
S811 S810
MENU MULTI/2CH
w w w
.
See page 42 for Waveforms.
FL801
FLUORESCENT INDICATOR TUBE
S21 16G
P20
S20 15G
P19
S19 14G
P18
S18 13G
P17
S17 12G
P16
S16 11G
P15
S15 10G
P14
S14 9G
P13
S13 8G
P12
FLUORESCENT INDICATOR
S12 7G
TUBE DRIVER
S11 6G
IC801
MSM9202-06GS-BK
S10 5G
S9 4G
S8 3G
S7 2G
S6 1G
S5 VFL
GND
C811 C813 C815 C803
100p 100p 47p 0.1
C814 0.047
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y
i
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8
16G
15G
14G
13G
12G
11G
10G
Q803 Q802 Q801
9G DTC114EKA DTC114EKA DTC114EKA
SEGMENT GRID GRID
8G
DRIVE DRIVE DRIVE
7G
6G
5G Q Q
3 7 6 3
4G
R806 R807 R808
3G
100k 100k 100k
C801
0.1
REMOTE
CONTROL
RECEIVER
IC802
NJL74H400A
C810
0.1
C851
R852
100
100
6.3V
R851
47
C802
100
6.3V
u 1 6 3
.
39 39
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2 4
9 9 8
R812 R813 R814 R815
2.2k 4.7k 10k 22k
S803 S804 S805 S806
R827
OPEN/CLOSE
1k
1 5 1 5 0 8 9 2 4
1 3 5
R810 R811
1k 2.2k
S801 S802 2 4
S830
AMS
PUSH ENTER
R818
68
D803
SEL5E20CTP15 R819 C820
10k 0.1
(MULTI-CHANNEL)
m
c o
SCD-XB790
2
9 9
CN802
5P
GND
-33V
F1
F2
+3.3V
(Page 41)
R830
0
9 8 2 9 9
C832
0.1
CN801
11P
FLDATA
FLDATA
GND
FLCLK
FLCLK
+3.3V
FLT
FLT
KEY0
FLRST
FLRST
KEY1
(Page 34)
RM
KEY2
LED
NO810
(CHASSIS)