
A
B
C
D
E
F
G
H
I
J
K
L
MCX-1000
67
SCHEMATIC DIAGRAM (MAIN: VIDEO Block)
1
2
3
4
5
6
7
8
9
★
All voltages are measured with a 10M
Ω
/V DC electronic voltmeter.
★
Components having special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
Point 4 Pin 238 of IC402
R Output
buffer
75
Ω
drive
G Output
buffer
75
Ω
drive
B Output
buffer
75
Ω
drive
Y Output
buffer
75
Ω
drive
VIDEO
Output buffer
75
Ω
drive
CROMA
Output buffer
75
Ω
drive
Y/C
MIX
R-Y
Modulation
B-Y
Modulation
Buffer
LPF
LPF
LPF
Clamp
Phase
Generation
Burst Generation
& NTSC/PAL
Selection
Clamp
Clamp
Matrix
CSYNC
CSYNC
CSYNC
Y
R-Y
B-Y
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
GND1
R-IN
G-IN
B-IN
N.C.
N.C.
N.C.
CSYNC-IN N.C.
N.C.
N.C.
CROMA-OUT
Y-OUT
B-OUT
G-OUT
R-OUT
GND2
Y-TRAP
N.C.
Vcc2
VIDEO-OUT
Vcc1
fsc-IN
NTSC/PAL-IN
IC401: MB3516APF-G-BND
RGB Encoder
COLUMN DECODER
CELL ARRAY
BANK #0
ROW DECODER
SENSE AMPLIFIER
COLUMN DECODER
CELL ARRAY
BANK #1
ROW DECODER
SENSE AMPLIFIER
COLUMN DECODER
CELL ARRAY
BANK #2
ROW DECODER
SENSE AMPLIFIER
COLUMN DECODER
CELL ARRAY
BANK #3
ROW DECODER
SENSE AMPLIFIER
CLOCK
BUFFER
COMMAND
DECODER
ADDRESS
BUFFER
REFRESH
COUNTER
COLUMN
COUNTER
DATA CONTROL
CIRCUIT
DQ
BUFFER
MODE
REGISTER
CONTROL
SIGNAL
GENERATOR
DMn
DQ0
DQ15
UDQM
LDQM
CLK
CKE
CS
RAS
CAS
WE
A10
A0
A9
A11
BS0
BS1
IC403: W986416DH-7
SDRAM
0
0
1.3
1.3
1.3
1.6
3.0
2.9
5.0
0
5.0
0.7
1.1
3.3
4.8
0
0.2
5.0
0.2
4
VIDEO
ENCODER
OSD
SDRAM