Schematic Diagram - Display/Key Boards - Sony SCD-XB770 Service Manual

4-15. SCHEMATIC DIAGRAM – DISPLAY/KEY Boards – •
REMOTE CONTROL
RECEIVER
IC802
NJL74H400A
C809
100000p
C810
100
6.3V
R824
R825
100
47
See page 30 for Waveforms.
FL801
FLUORESCENT INDICATOR TUBE
S20
S20
S19
S19
S18
S18
S17
S17
S16
S16
S15
S15
S14
S14
S13
S13
FLUORESCENT INDICATOR
S12
S12 TUBE DRIVER
S11
IC801
S11
MSM9202-06GS-BK
S10
S10
S9
S9
S8
S8
S7
S7
S6
S6
S5
S5
R805
100
C808
100p
16G
Q801,802
15G SEGMENT GRID
15G DRIVE DRIVE
14G
14G
13G
13G
12G
12G
11G
11G
10G
10G Q803 Q802
9G DTC114EKA DTC114EKA
9G
8G
8G
7G
7G
6G
6G
5G R806 R807
5G 100k 100k
4G
4G
3G
3G
2G
1G
VFL
C801
0.1
C802
C803
100
C805 C804 100000p
6.3V
100000p 47p
27 27
(Page 29)
CNP802
3P
R819 R820
2.2k 3.3k
KEY0
S807 S808 S809
Q801
DTC114EKA
R811 R812
2.2k 3.3k
KEY1
R808 S830
100k
S801 S802
R815
33k
CNP803
4P
CNP804
4P
R813
4.7k
S803 S804
MENU SACD/CD
SCD-XB770
(Page 22)
CN801
12P
R821
47k
R818
68
1 3 4
S806
2 5
S803 S806 D803
SELU5E23C-STP15
ROTARY
OPEN/CLOSE
(MULTI-CHANNEL)
ENCODER
AMS
PUSH ENTER
R814
10k
S805 S812
MULTI/2CH TIME/TEXT