A
B
C
SCHEMATIC DIAGRAM (DSP 1/2)
1
REGULATOR
2.3
1.2
4.9
2
2.3
3.4
1.2
4.3
0
4.9
4.7
2.5
1.2
0
3
0.1
3.4
0.1
4.9
4.9
0
4.9
3
8
1
2.6
0
2
4
2.6
0.1
4.9
0
0.1
3.4
4.9
0
5
4
0
7
0.1
6
0.1
INPUT SELECTOR
4.1
0
4.8
0.2
0
3.4
0
0.1
0
0.1
3.4
4.8
4.1
0
5
0.2
0
0.2
0
0.1
0
0.2
0
0
4.8
0
3.4
0.1
0
0.1
3.4
3.9
4.1
0
0
0.2
0
0.2
0
4.8
0.1
0
0
REC OUT SELECTOR
6
DIGITAL IN
4.9
Point 1 Pin 29 of IC509
2.3
2.7
0.6
0
2.3
2.7
0.6
7
2.3
2.7
0.6
8
IC501: SN74LVU04APWR
IC503: PQ012FZ01ZP
Hex Inverters
Voltage Regulator
DC input
DC output
1A
1
14
VCC
1
3
(Vin)
(Vo)
1Y
2
13
6A
Specific IC
2A
3
12
6Y
Bias power supply
ON/OFF control
2
4
(VB)
(Vc)
2Y
4
11
5A
5
GND
3A
5
10
5Y
3Y
6
9
4A
GND
7
8
4Y
9
IC502: SN74AHCT00PWR
Quad 2-Input Nand Gate
1A
1
14
Vcc
1B
2
13
4B
1Y
3
12
4A
2A
4
11
4Y
2B
5
10
3B
10
2Y
6
9
3A
GND
7
8
3Y
D
E
F
Page 91
I2
Page 93
J8
to OPERATION (3)
to POWER (3)
2.5
3.4
4.9
0
3.4
4.9
2.5
3.4
0
0
0
4
0.1
3
4.9
6
4.9
8
0
5
4.9
4.9
14
0
3
0
7
1
2
1
2
4
5
9
10
0
0
3.4
3.4
3.4
3.4
3.4
3.4
4.9
3.9
4.9
0
0
0
0
0
0
3.4
0
0.1
3.4
0.1
3.4
0
3.3
0.1
0
3.9
0
0
0
3.4
3.4
1
0.6
1.7
DIR
0.6
3.4
0.6
1.7
3.4
3.4
0
0
IC504, 505: TC74VHC153FT
Dual 4-Channel Multiplexer
A
14
S0
S0
S1
S1
B
2
S2
S2
S3
S3
1C0
6
7
1Y
S0
1C1
5
IC506: NJM2904M
S1
Dual OP-Amp
V–
1C2
4
S2
1C3
3
S3
Q6
1G
1
Q2
Q3
Q5
–
Q1
Q4
Q7
10
2C0
9
2Y
S0
INPUTS
11
2C1
Q13
S1
+
Q11
Q12
2C2
12
Q10
S2
Q8
Q9
2C3
13
S3
2G
15
G
H
Page 89
E1
to FUNCTION
TRANSCEIVER
11
4.8
12
13
3.2
3.2
3.4
1.2
0
3.4
3.4
0
1.2
1.2
0
DECODER
1.7
1.7
1.2
0
1.7
3.4
0
0.1
1.2
0
3.3
3.2
3.4
0
1.2
2.7
0
1.2
3.4
3.4
1.2
3.4
0
1.2
3.4
0
0
1.2
1.2
0
IC510: µPC29M33T-E1
IC508: PQ025EZ5MZP
Regulator
Voltage Regulator
1
Vin
Vo
1
3
Safety Drive
2
Vc
Limiter
5
GND
Amp.
3
OUTPUT
Excessive Electric
Current Protection
2
I
J
K
RX-V2400/RX-V2400RDS/DSP-AX2400/RX-V1400/RX-V1400RDS/HTR-5690/DSP-AX1400
3.4
1.7
0
1.7
1.2
0
0.1
0.7
0.1
1.6
0
3.4
1.7
1.7
3.4
0
1.2
2.9
2.9
2.9
2.9
2.9
2.9
3.4
0
1.2
2.8
2.9
2.9
3.2
2.9
SDRAM
2.8
0
1.2
0
3.4
2.9
3.4
0
3.2
2.9
3.2
2.8
2.9
2.9
3.1
0
0
2.9
2.8
3.1
2.9
2.8
3.4
3.4
0
2.9
0
1.2
2.9
3.2
0
0
2.9
2.9
2.9
2.8
3.4
3.4
3.1
3.4
3.1
3.3
3.4
3.4
3.3
0.7
0.1
0.1
3.3
0.1
2.4
0.1
3.1
3.4
3.0
3.2
3.2
3.4
0
IC513: SN74LV245APWR
IC511: SN74AHCT08PWR
Quad 2-Input And Gate
Octal Bus Transceiver with 3-state Outputs
INPUT
1A
1
14
Vcc
DIR
1
20
Vcc
1B
2
13
4B
A1
2
19
OE
1Y
3
12
4A
A2
3
18
B1
2A
4
11
4Y
OUTPUT
A3
4
17
B2
2B
5
10
3B
2Y
6
9
3A
A4
5
16
B3
GND
7
8
3Y
A5
6
15
B4
GND
A6
7
14
B5
A7
8
13
B6
A8
9
12
B7
GND
10
11
B8
L
M
N
IC515: W981616BH-7
512K x 2 Banks x 16 Bits SDRAM
CLK 35
CLOCK
BUFFER
CKE 34
COLUMN DECODER
CS
18
CONTROL
SIGNAL
R
RAS
17
GENERATOR
O
COMMAND
W
DECODER
CAS
16
D
CELL ARRAY
2 DQ0
E
WE
15
BANK #0
C
3 DQ1
O
D
5 DQ2
E
R
A10 20
6 DQ3
SENSE AMPLIFIER
8 DQ4
9 DQ5
MODE
A0
21
11 DQ6
∼
REGISTER
ADDRESS
12 DQ7
A3
24
REFRESH
DQ
BUFFER
COUNTER
BUFFER
39 DQ8
A4
27
∼
40 DQ9
A9
32
42 DQ10
BA
19
43 DQ11
45 DQ12
46 DQ13
REFRESH
COLUMN
COLUMN DECODER
48 DQ14
COUNTER
COUNTER
R
O
49 DQ15
W
D
CELL ARRAY
E
BANK #1
C
O
D
E
14 LDQM
R
36 UDQM
SENSE AMPLIFIER
IC531: SN74AHC1G08DCKR
2-Input And Gate
A
1
5
Vcc
B
2
GND
3
4
Y
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# 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.
87