CIRCUIT DIAGRAM - CPU BOARD
9- 1
9- 1
X201
4.19MHz
C217
30P
C218
30P
X202
32.768KHz
C219
30P
C220
30P
C
22
1
47
U
F/
10
V
C
22
2
10
4P
R257
22K
D
20
3
41
48
C
22
6
10
U
F/
10
V
QUAL
1
RDDA
2
VREF
3
MPX
4
OSEL
5
GND
6
ARI
7
FILOUT
8
FSEL
9
TM
10
EXRES
11
Vs
12
OSCIN
13
OSCOUT
14
T57
15
RDCL
16
IC203
TD2579
R241
1K
R242
1K
C229
330P
C227
2.2UF/10V
C224
104P
X203
4.33MHz
C230
47P
C231
82P
C228
560P
SC
L
SD
A
M
U
TE
ST
A
N
D
B
Y
M-DOWN
36
M-UP
35
LED
34
DVD-STB
17
DVD-CLK
16
M
U
TE
30
PLL-DA
21
SU
R
-M
U
TE
29
RDS-SDA
19
ST
/T
U
N
ED
27
SD
A
26
SC
L
25
TU
N
-O
N
24
PL
L-
C
E
23
PLL-CL
22
TE
ST
9
V
ss
6
X
T-
O
U
T
7
X
T-
IN
8
M
-C
LO
SE
32
DVD-DI
15
DVD-DO
14
DVD-ON
13
RESET
12
X
-O
U
T
11
X
-I
N
10
RDS-Q
20
RDS-SCL
18
M
-O
PE
N
33
V
dd
5
C
LO
SE
-S
W
4
D
V
D
-T
M
S
3
O
PE
N
-S
W
1
ROT-A
41
K
EY
2
ROT-B
42
REMTOE
40
DS-CLK
39
DS-DAT
38
DS-STB1
37
ST
A
N
D
B
Y
31
40
52
-A
28
M+
43
M-
44
IC210
2SC9228
R224
2.2K
TU
N
-O
N
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
TEST
7
Vdd
8
IC200
24C01
1 2 3 4 5 6
CN202
8P/2.0
D204
IN60
R
D
S-
IN
REM
R237
68K
R233
4.7K
DS-STB1
DS-DAT
DS-CLK
REM
ROT-A
ROT-B
R213
10K
R212
10K
R214
10K
R215
10K
C215
103P
C216
103P
D
S-S
TB
1
D
S-D
A
T
D
S-C
LK
1 2 3 4 5
CN201
7P/2.0
A
5V
M
U
TE
ST
A
N
D
B
Y
R
O
T-
B
R
O
T-
A
R225
100
KEY
A5V
D
20
1
41
48
SU
R
-M
U
TE
D
-G
N
D
D
V
D
IR
D
V
D
S
TB
D
V
D
C
LK
D
V
D
D
A
TA
PL
LC
E
PL
LD
A
TA
PL
LC
LK
D
-G
N
D
L
20
0
10
0U
H
C254
470UF/16V
C
22
5
10
4P
R
21
7
10
K
C202
470UF/16V
C223
104P
R256
3.3K
DVD ON
DVD-ON
C203
330P
R
23
2
10
0
C209
102
C210
300P
C208
300P
D
V
D
-T
M
S
Q207
8550
Q208
8550
Q204
8050
Q203
8050
R239
1K
R240
1K
1
2
CN205
2P/2.5
M+
M-
R223
470
R222
470
A5V
K
E
Y
R
E
M
R
23
0
10
0
C211
300P
A
5V
1
2
3
CN206
4P/2.5
R226
100
C204
330P
LED
M-UP
M-DOWN
M-DOWN
M-UP
L
E
D
R220
1K
R221
1K
R218
470
R219
470
R211
10K
R210
10K
Q202
8050
Q201
8050
1
2
3
4
5
CN204
5P/2.0
M-CLOSE
M-OPEN
Q206
8550
Q205
8550
OPEN-SW
CLOSE-SW
M-CLOSE
M-OPEN
OPEN-SW
CLOSE-SW
ST
/T
U
N
E
D
M
1+
M
1-
D-GND
A5V
R216
10K
C
-4
4
R
23
1
10
0
C201
220UF/16V
R238
1K
R203
10K
R204
10K
R205
10K
R243
1K
R244
1K
R
20
6
10
K
R
20
7
10
K
R
20
8
10
K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
CN208
34P
1
2
3
4
CN203
9P/2.0
RDS-IN
D202
4148
M
U
TE
R236
4.7K
R235
4.7K
R261
100K
R259
100K
R245
1K
R248
47K
R209
10K
TUN-R
TUN-L
Q210
9014
Q209
9015
R234
4.7K
D-MUTE
1
2
3
4
5
CN207
4P/2.0
+12V
TUN-ON
SD
A
SC
L
DZ201
9V
R250
10K
R246
1K
R
25
8
10
0K
R247
1K
R
26
0
10
0K
1
3
2
J200
RCA-2P
R
26
4
1K
R
26
5
1K
C
25
3
22
uF
C
24
3
2.
2u
F
C
24
2
2.
2u
F
C
23
5
2.
2u
F
C
23
6
2.
2u
F
C
23
8
2.
2u
F
C
23
9
2.
2u
F
C
24
0
2.
2u
F
C
25
2
47
uF
R262
8K2
R263
8K2
C
24
5
10
4
C
24
6
10
4
C
24
7
10
4
C
24
9
10
4
R266
220
C
24
4
10
4
C
24
8
10
4
C
25
0
27
2
C
25
1
27
2
C
24
1
2.
2u
F
C
23
7
2.
2u
F
TU-R
CD-L
CD-R
R
EF
1
V
D
D
2
A
G
N
D
3
TR
EB
_L
4
TR
EB
-R
5
R
IN
6
R
O
U
T
7
LO
U
D
-R
8
C
D
-R
9
TU
N
ER
-R
10
TA
PE
-R
11
LO
U
D
_L
12
C
D
-L
13
TU
N
ER
-L
14
TA
PE
-L
15
LI
N
16
LO
U
T
17
B
IN
-L
18
B
U
O
T_
L
19
B
IN
_R
20
B
O
U
T_
R
21
R
R
O
U
T
22
LR
O
U
T
23
R
FO
U
T
24
LF
O
U
T
25
D
G
N
D
26
D
A
TA
27
C
LK
28
IC204
PT2313L
C234
2.2uF
TU-L
AUX-L
AUX-R
C232
100P
C233
100P
R251
4.7K
R252
4.7K
R253
47K
R254
47K
OUT-L
OUT-R
R200
0
S1
2V
Q200
8050
R201
10K
D200
4148
R202
10K
C200
100UF/16V
L
E
D
LED-
COM
oscI
1
oscO
2
Int
3
Vss
4
SDA
5
SCL
6
Clk
7
Vdd
8
U200
PCF8563
X200
32.768
R249
10K
C212
15P
SDA
SCL
A5V
S1
2V
+12V
speak ctrl
R267
2.2K
R268
2.2K
C255
470P
C256
470P
R270
2.2K
C258
470P
R269
2.2K
C257
470P
1 2 3 4
CN11
5P/2.0
C
-1
9
C
-2
0
C
-4
4
C
-1
8
D
-G
N
D
+12V
R
O
T-
B
R
O
T-
A
K
E
Y
R
E
M
L
E
D
-M
U
TE
-S
TA
N
D
B
Y
sp
ea
k
ct
rl
sp
ea
k
ct
rl-
PL
L
C
E
PL
L
D
A
T
A
PL
L
C
L
K
ST
/T
U
N
E
D
1 2 3 4
CN210
5P/2.0
+1
2V
C-18
C-19
C-20
A5V
1 2
CN12
2P/2.0
A5V
D
20
5
40
01
SW
-
EC
O
-P
O
EW
R
EC
O
-P
O
EW
R
1
2
3
4
5
6
7
8
IC209
AC6811
1
2
10
9
7
6
3
4
5
B1
BZ1
L1
200UH
C1
470/16V
Q1
8050
Q2
8050
R1
1K
R2
1K
R5
100
C3
104
C2
220U/35V
D2
FR104
VF1
VF2
-27
R4
100
R3
100
DZ1
3V
D1
4148
1 2 3
CN2
3P/2.0
V
F1
V
F2
-2
7
C4
473M
R6
22K
A5V
ECO
1
2
LED206
LED(BLUE)
1
2
3
4
5
6
7
CN17
2P/2.0
1
2
LED205
LED(BLUE)
1
2
LED204
LED(BLUE)
1
2
LED203
LED(BLUE)
1
2
LED202
LED(BLUE)
1
2
LED201
LED(BLUE)
1
2
CN200
2P/2.0
All parts comply with suppliey environment
note
:
protect material licf regulate by green envionment management
tolerance RES±10
%
CAP±20
%,
special parts nated beside parts
Summary of Contents for MCD 728
Page 2: ...1 1 HANDLING CHIP COMPONENTS ...
Page 3: ...1 2 ...
Page 5: ...2 2 ...
Page 14: ...5 2 5 2 SET BLOCK DIAGRAM ...
Page 17: ...6 2 6 2 LAYOUT DIAGRAM VFD BOARD ...
Page 19: ...7 2 7 2 LAYOUT DIAGRAM TUNER BOARD ...
Page 21: ...8 2 8 2 LAYOUT DIAGRAM AMP BOARD ...
Page 23: ...9 2 9 2 LAYOUT DIAGRAM CPU BOARD ...