Hitachi HTD-K210, Service Manual

Page: 39 / 71

FUNCTION BUTTON CIRCUIT DIAGRAM
19
SCHEMATIC DIAGRAMS
S W 2
2
S W 3
3
S W 1
1
S W 4
4
DOUT
5
DIN
6
NC
7
CLK
8
S T B
9
KE1
10
KE2
11
KE3
12
KE4
13
VDD
14
S1
15
S2
16
S3
17
S4
18
S5
19
S6
20
S7
21
S8
22
S9
23
S10
24
S11
25
S12
26
S 13
27
S 14
28
S 15
29
S 16
30
S 17
31
S 18
32
VDD
33
VEE
34
S 19
35
G9
36
G8
37
G7
38
G6
39
G5
40
G4
41
G3
42
G2
43
G1
44
VDD
45
LED5
46
LED4
47
LED3
48
LED2
49
LED1
50
VSS
51
OSC
52
PT6311
N1
F-
1
F-
2
G6
3
G5
4
G4
5
G3
6
G2
7
G1
8
S 1
9
S 2
10
S 3
11
S 4
12
S 5
12
S 6
13
S 7
14
S 8
15
S 9
16
S 10
17
S 11
18
S 12
19
S 13
20
S 14
21
S 15
22
S 16
23
S 17
24
S 18
25
F+
26
F+
27
VF1
DATA STB +5V RMC GND CLK F+ POWER SW VCC
HS0038
V
G
S
C2 104
C3 100uf/16v
C101 104
R106 10
F- -24V
R107
10K
R108
10K
R109
10K
R110
10K
VD1
IN4148
VD2
IN4148
VD3
IN4148
VD4
IN4148
LED1
S9
NEXT
S4
FUNCTION
S1
TITLE
S3
MEMORY
S7
PAUSE
S5
OPEN
S6
STOP
S10PREV
S2
MUTE S8
PLAY
R112 10K
R101 510
R103
10K
R105 10K
R102 10K
R104 10K
S11 POWER
VOL DOWN VOL UP
VFD20-0605A
C01 104
R116 56
R? 2.2
R? 180
R? 180
6A3
LED1 LED1 LED1 LED1
R? 620 R? 620 R? 620 R? 620
+5
VR