PCB REVISION: 01
SCH REVISION: 01
SHEET: 02/02
CODE NO
B
C
D
4
5
6
C
H
A
N
G
E
MARKS
3
1
2
3
4
5
REF NO
2
DESCRIPTION
1
SGN
APP
DESCRIPTION
MODEL NO
DRAWN BY
CHECKED BY
TECHNICS BY
APPROVED BY
A
Foryou General Electronics Co., Ltd.
KEY BOARD
DV-7550
D-7500-3001-00-00
VOLUME -
LED Section
LCD Section
KEYS Section
Remote Section
FPC Section
应该改为
1k
靠近
IC
放
1
A
3
C
2
B
4
D
5
E
7
6
SW1000
ENCODER
2
1
3
4
5
ZD1000
NC
2
1
3
4
5
ZD1002
NC
1
DGND
2
LCD_DATA
3
LCD_CS
4
LCD_CLK
5
LCD-CD
6
S3.3V
7
POWER_KEY
8
DGND
9
REMOTE
10
RESET
11
B5V
12
EJECT_KEY
13
KEY2
14
ADV
15
ENCODE_A
16
ENCODE_B
17
LED_5V
18
EJECT_LED
19
POWER_LED
20
DGND
CN1001
R1006
10k/1%
R1
02
9
10
k/
1%
R1017
0R
R1028
1k
R1005
1k
K1003
RESET
K1000
EJECT
K1001
SRC/POWER
R1024
20k 1%
R1025
6k2 1%
R1043
1k
C1016
102
C1010
104
C1018
10u/16V/1206
L1000
10uH/0805
1
V
CC
2
G
N
D
3
RO
U
T
U1001
IRM-2638AF4
LED1009
R1000
2k2
R1030
15k/1%
R1031
0R
K1002
MUTE
LED1011
R1039
560R
LED1008
R1002
560R
LED1001
R1003
560R
C1011
104
C1009
104
C1019
10u/16V/1206
C1012
104
R1036
100R
R1037
100R
R1018
10k
R1044
470k
1
COM4
2
COM3
3
COM2
4
COM1
5
S1
6
S2
7
S3
8
S4
9
S5
10
S6
11
S7
12
S8
13
S9
14
S10
15
S11
16
S12
17
S13
18
S14
19
S15
20
S16
21
S17
22
S18
23
S19
24
S20
25
S21
26
S22
27
S23
28
S24
29
S25
30
S26
31
S27
32
S28
33
S29
34
S30
35
S31
36
S32
CN1000
LCD-PIN36-XJ
GND
LED5V
S3V3
B5V
RESRMT
CLK CS DAT
SRC
Q1001
KRC402
C1
00
0
102
C1
00
6
102
C1
00
3
102
L1001
10uH/0805
R1021
4k7/1%
R1020
4k7/1%
R1022
0R
C1008
102
C1
00
1
102
C1
00
2
102
1
1
2
2
U1000
LCD-BACKLIGHT
R1038
100R
C1007
105
37
S20
38
S21
39
S22
40
S23
41
S24
42
S25
43
S26
44
S27
45
S28
46
S29
47
S30
48
S31
24
S7
23
S6
22
S5
21
S4
20
S3
19
S2
18
S1
17
S0
16
/RESET
15
COM3
14
COM2
13
COM1
25
S8
26
S9
27
S10
28
S11
29
S12
30
S13
31
S14
32
S15
33
S16
34
S17
35
S18
36
S19
12
COM0
11
C/D
10
/CS
9
SD
8
SCK
7
VDD
6
VSS
5
V3
4
V2
3
V1
2
OSC2
1
OSC1
U1002
BU9728AKV
R1023
47k
R1035
100R
C1005
105
R1019
4k7
CD
C1017
104
LED1002
R1004
1k
LED1003
R1007
1k
Q1000
2N3904S
R1014
10k
R1027
20k
1
3
5
7
2
4
6
8
RN1000
NC
LED1004
R1008
560R
LED1006
R1032
560R
LED1
R1
560R
C1
102
[2]
ENCODE_B
[2]
ENCODE_A
ESD_GND
B5V
DGND
[2]
RESET
[2]
SRC/POWER
[2]
EJECT
[2]
KEY2
[2]
REMOTE
DGND
B5V
B5V
DGND
[2]
POWER_LED
[2]
EJECT_LED
[2]
POWER_LED
[2]
ENCODE_B
[2]
ENCODE_A
[2]
KEY2
[2]
REMOTE
[2]
EJECT
[2]
RESET
[2]
SRC/POWER
[2]
LCD_CLK
[2]
LCD_CS
[2]
LCD_DATA
ADV
ADV
[2]
KEY2
LED_5V
DGND
ESD_GND
[2]
B5V
[2]
ADV
[2]
LED_5V
[2]
LCD_DATA
[2]
LCD_CLK
[2]
LCD_CS
DGND
LCD[1:36]
LCD1
LCD2
LCD3
LCD4
LCD5
LCD6
LCD7
LCD8
LCD9
LCD10
LCD11
LCD12
LCD13
LCD14
LCD15
LCD16
LCD17
LCD18
LCD19
LCD20
LCD21
LCD22
LCD23
LCD24
LCD25
LCD26
LCD27
LCD28
LCD29
LCD30
LCD31
LCD32
DGND
LCD33
LCD34
LCD35
LCD36
DGND
DGND
LED_5V
[2]
S3V3
[2]
S3V3
LC
D
1
LC
D
2
LC
D
3
LC
D
4
LC
D
5
LC
D
6
LC
D
7
LC
D
8
LCD9
LCD10
LCD11
LCD12
LCD13
LCD14
LCD15
LCD16
LCD17
LCD18
LCD19
LCD20
LC
D
21
LC
D
22
LC
D
23
LC
D
24
LC
D
25
LC
D
26
LC
D
27
LC
D
28
LC
D
29
LC
D
30
LC
D
31
LC
D
32
LC
D
34
LC
D
35
LC
D
36
DGND
LC
D
33
[2]
LCD_CD
DGND
[2]
LCD_CD
DGND
[2]
EJECT_LED
DGND
LED_5V
ESD_GND
ESD_GND
DGND
DGND
