Cambridge Audio HDMI D
VD99
Display Board
K401 : OPEN/CLOSE
K405 : PLAY/PAUSE
K402 : STOP
K406 : HDMI
U403
VFD401
1
SW1
2
SW2
3
SW3
4
SW4
5
DO
6
DIN
7
VSS
8
CLK
9
STB
10
KEY1
11
KEY2
12
KEY3
13
KEY4
14
VDD
15
S1
16
S2
17
S3
18
S4
19
S5
20
S6
21
S7
22
S8
23
S9
24
S10
25
S11
26
S12/G1
27
VEE
28
S13/G1
29
S14/G9
30
S15/G8
31
S16/G7
32
G6
33
G5
34
G4
35
G3
36
G2
37
G1
38
VDD
39
LED4
40
LED3
41
LED2
42
LED1
43
VSS
44
OSC
U401
UPD16312
C401
104
C403
101
C404
101
C406
101
1 2
3
HS0038A2
K401
K405
K406
K402
D401
1N4148
D402
1N4148
C405
104
C408
104
R415 100
R405
33K
R402
33K
R403
33K
R404
33K
R406
10K
R407
10K
R408
10K
R409
10K
R410
10K
R411
33K
R412
33K
R413
33K
R414
33K
R416
10K
R417
10K
R418 2.2R
R401 10R
2
3
4
1
5
XS402
XS05
2 3 4
1
5
XS401
XS05
470uF/10V
100uF/16V
470uF/10V
470uF/10V
1
F1
2
F1
4
P16
7
P13
6
P14
5
P15
8
P12
9
P11
10
P10
11
P9
12
P8
13
P7
14
P6
15
P5
16
P4
17
P3
18
P2
19
P1
23
NC
24
NC
25
NC
26
NC
31
5G
32
6G
27
1G
28
2G
29
3G
30
4G
34
F2
35
F2
20
NC
21
NC
22
NC
VFD-35
ZD401
5.1V/0.5W
R423
4.7K
R425
150R
R426
150R
R427
150R
1
2
LED402
LED
1
2
LED403
LED
1
2
LED404
LED
V401
3906
R428
4.7K
V402
3906
R429
4.7K
V403
3906
R424
150R
1
2
LED401
LED
R430
4.7K
V404
3906
VCC
VCC
VCC
VCC
KEY2
VFDAT
SW3
SW4
SW2
MSW
GND
SEG11
SEG10
SEG9
GRID5
-25V
SEG
8
SEG
7
SEG
6
SEG
5
SEG
4
SEG
3
SEG
2
SEG
1
VCC
SEG14
SEG15
SEG16
GRID
1
GRID
3
GRID
2
GRID
4
VCC
KEY1
KEY2
KEY4
KEY3
VCC
GND
VFDCK
SEG12
SEG13
SEG
2
FIL-
-25V
GND
VCC#
KEY1
SEG
1
VFDAT
VFDCK
VFDST
GND
IR
IR
VCC
FIL+
GRID6
GRID5
GRID4
GRID3
GRID2
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
FIL-
VFDST
FIL+
GRID1
GRID6
LED2
LED1
LED3
LED4
LED4
LED3
LED2
LED1
©
COPYRIGHT
Audio
Partnership
PLC
Gallery
Court
Hankey
Place
LON
DON
SE1
4BB
10
