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Circuit Diagrams and PWB Layouts
Main Board: MM502 MCU
1
2
A2
MM502 MCU
A
B
MCU+5V
C
D
SDA5
R39
22
SCL5
R38
22
T68
AFC
R219
NC
BUD0
T66
T71
POWER_ON
2
3
2
3
4
4
1
5
MCU+5V
T78
1
5
E
N23
TC7S04F
F
G
1
2
SHA2.0U LA
3
4
5
N15
24LC16
5
4
SDAE
SDA
VCC
6
3
SCLE
SCL
VCLK
7
2
NC3
NC2
8
1
MCU+5V
GND
NC1
R207
100
R211
100
MCU+5V
R218
NC
R177
4.7K
R165
4.7K
R32
4.7K
R31
4.7K
L6
R30
4.7K
MCU+VDD
601
MCU+5V
R28
4.7K
C65
+
+
+
C67
100n
100n
7
RST
8
VDD
9
P6.3/AD3
10
P6_3
VSS
11
X2
12
X1
13
T0/P3.4
14
ISCL/P7.7
15
VCOAST/P4.2
16
P6.2/AD2
TUNER_AFC
17
P1.0
Z1
11.0592MHz
MCU+5V
R41
4.7K
R133
4.7K
R42
4.7K
R43
4.7K
R44
4.7K
R45
4.7K
R46
4.7K
R47
4.7K
R23
4.7K
R24
4.7K
R51
4.7K
R16
10k
BACKLIGHT_ON/OFF
VD48
MMST3904
BKLON
3
4
5
7.
EN 25
6
7
R85
6
1
RMC_SW
SW
IN1
5
2
MCU+5V
VCC
GND
4
3
RMC_DVD
OUT
IN2
N2
FSA3157
MCU+5V
R49
39
DA8/P7.1
R15
38
DA9/P7.2
P4_1
37
VBLANK/P4.1
N38
36
VBLANK/P4.0
A_MUTE
35
DA7/P7.0
34
RMC_SW
N9
DA6/P5.6
33
HPLG_CTL
P6.7/DA13
MM502/LF
32
A_SW1
P6.6/DA12
AUDEI_VGA/HDMI_SW
31
P6.5/DA11
30
P6.4/DA10
29
HSC/P3.0
MCU+5V
JP19
MRXD
1
2
3
4
MTXD
R61
MCU+5V
R58
R59
1K
ARST1
VD7
MMST3904
R56
1K
MRST
VD8
MMST3904
6
7
8
9
A
10
RMC_IN
DVD_RMC
R69
10
B
HSYNC
VSYNC
1V / div DC
1V / div DC
20us / div
5ms / div
C
10
STANDBY_DVD
10
AUTO_CHANGE_TO_DVD
P4_1
ISS355
MUTE
RMC_SW
HPLG_CTL
D
A_SW1
AUDIO_VGA/HDMI_SW
ARST1
MRST
E
4.7K
4.7K
ARSTN
F
RST_MST
T75
G
8
9
C3
B5
A_MUTE
D7
C65
E3
A_SW1
D7
C66
E3
AUDIO_VGA/HDMI_SW
D7
C67
E4
BKLON
G5
C69
E4
HPLG_CTL
D7
C70
E3
HSYNC
C5
C78
C4
KEY-IN0
F6
L6
C3
KEY-IN1
F6
N2
B7
MCU+5V
C3
N9
D5
P_EN
D2
N15
A4
P4_1
D7
N23
E2
P6_3
D3
N38
D7
RMC-IN
F5
R15
D7
RMC_SW
D7
R16
F4
T65
E5
R19
F5
T66
D2
R21
F6
T67
F5
R22
F6
T68
D2
R23
F4
T69
F5
R24
F4
T70
F5
R28
C4
T71
D2
R29
C5
T72
F5
R30
C4
T73
E5
R31
C4
T74
B5
R32
B4
T75
F8
R33
E4
TUNER_AFC
D3
R34
C2
VHSYNC
C5
R35
C2
VIDEO_OUT_SW
B5
R36
C3
YUV/DVD_SW
E6
R38
D2
R39
D2
R40
C2
R41
E4
R42
E4
R43
E4
R44
E4
R45
F4
R46
F4
R47
F4
R49
D7
R50
C6
R51
F4
R52
C7
R53
C7
R54
C7
R55
C7
R56
F7
R57
B6
R58
E7
R59
F7
R60
B6
R61
E7
R63
C7
R64
C7
R65
C7
R66
C7
R68
C7
R69
B8
R85
A8
R86
F6
R106
C3
R133
E4
R165
B4
R177
B4
R207
B4
R211
B4
R220
C2
R224
F5
VD6
E4
VD7
F7
VD8
F7
VD48
G5
Z1
E3
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