A
1
2
3
4
5
6
8
DSP-A5
B
C
D
E
G
H
I
J
K
L
7
E-49/J-47
■
SCHEMATIC DIAGRAM [INPUT (2/2)]
DIGITAL IN
4.7
0
0
0
0
0
0
0.1
4.7
4.7
0.1
0
0
4.7
4.7
4.7
4.7
4.7
4.7
4.7
0
0
0.3
0.3
4.7
0
0
0
0
4.7
4.7
4.7
4.7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
4.1
0.1
4.7
4.7
4.7
4.7
4.7
4.7
0
0
0
4.7
4.7
0
4.7
0
2.4
4.1
0.1
0.1
4.7
4.7
4.7
2.5
0.3
3.3
0
0
0
3.3
0
–4.9
0
0
5.0
0
2.4
0
0
0
0
3.3
0
0
0
3.3
0
–4.9
0
0
5.0
0
2.4
0
0
0
0
3.3
0
0
0
3.3
0
–4.9
0
0
5 .0
0
2.4
0
0
0
0
COAXIAL SIGNAL DETECTOR
COAXIAL/OPTICAL SELECTOR
VIDEO SELECTOR & AMP
S VIDEO SELECTOR & AMP
DIGITAL
INPUT
SELECTOR
DVD/LD
OPTICAL
DIGITAL
SIGNAL
VIDEO
SIGNAL
MONITOR
OUT
S VIDEO
SIGNAL
MONITOR
OUT
IN
VCR
OUT
DVD/LD
COAXIAL
CBL/SAT
COAXIAL
D–TV
OPTICAL
CBL/SAT
OPTICAL
T
O DSP #1
page E-51/J-49
B-1
SURROUND
EXT. DECODER
INPUT
T
O INPUT(1)
W103
page E-48/J-46
E-1
T
O INPUT(1) #112
page E-48/J-46
K-4
T
O OPE(2) #303
page E-50/J-48
K-3
IN
VCR
OUT
★
All voltages are measured with a 10M
Ω
/V DC electric volt meter.
★
Components having special characteristics are marked and
must be replaced with parts having specifications equal to those
originally installed.
★
Schematic diagram is subject to change without notice.
Conditions (DSP-A5)
• INPUT
→
CD
• VOLUME
→
minimum(–
∞
)
• IMPEDANCE
SELECTOR
→
Left
• PRO LOGIC
→
On
IC101 : TC9273N-004
Analog Function Switch
IC111,113 : TC9299P
Electric Controlled Volume
2
3
4
5
6
7
8
15
14
13
12
11
10
9
1
16
L-ch
DATA
LATCH
R-ch
DATA
LATCH
LEVEL
SHIFTER
SHIFT REGISTER (13bit)
STROBE GENERATOR
LEVEL
SHIFTER
OUT
IN
NC
A-GND
CS2
STB
DATA
OUT
IN
NC
A-GND
CS1
GND
CK
Vss
V
DD
R-ch
L-ch
IC104~106 : NJM2068LD
IC108~110 : M5220L
Dual OP-Amp
1
OUT1
2
–IN1
3
+IN1
4
–Vcc
5
+IN2
6
–IN2
7
OUT2
8
+Vcc
+
–
+
–
A OUT
A –IN
A +IN
V–
V+
B OUT
B –IN
B +IN
IC112,114 : NJM2068D-D
Dual OP-Amp
IC103 : LC78212
Analog Function Switch
1
2
3
4
30
29
28
27
5
6
7
8
26
25
24
23
9
10
11
22
21
19
16
12
14
18
15
17
13
20
L1
L2
L3
LCOM1
L4
L5
L6
LCOM2
L7
L8
LCOM3
V
DD
Vss
V
EE
RES
S
R1
R2
R3
RCOM1
R4
R5
R6
RCOM2
R7
R8
RCOM3
D1
CL
CE
LEVEL SHIFTER
LATCH
SHIFT RESISTER
CONTROL,
IC373,374: TC74HC00AP
Quad 2-input NAND Gate
1Y 3
1B 2
1A 1
2A 4
2B 5
2Y 6
GND 7
14 Vcc
11 4Y
12 4A
13 4B
10 3B
9 3A
8 3Y
IC371,372: TC74HCU04AP
Hex Inverters
1Y 2
1A 1
14 V
DD
13 6A
2
3
4
5
6
7
8
9
12
13
14
15
16
S1
S2
S3
GND
CK
DATA
STB
S4
S5
S6
S7
S8
10
11
27
26
25
24
23
22
21
20
17
19
18
S1
S2
S3
S4
S5
S6
S7
S8
S11
S9
S10
S9
S10
S11
(L-ch)
10-BIT
LATCH
CIRCUIT
LEVEL SHIFT REGISTER
(R-ch)
SAME
AS L-ch
CIRCUIT
PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC’s.
DTA144ES
NJM2068D-D
BU2090
NJM2296D
HD74HC153P
TC9299P
M5220L
1SS133
1SS176
TC74HC00AP
TC74HCU04AP
TC9273N-004
Anode
Cathode
NJM2068LD
HSS104
HZS11B2TD
2SC2878(A, B)
E
C
B
8
E
C
B
LC78212
LC78213
14
28
IC102 : LC78213
Analog Function Switch
IC301,351,352 : NJM2296D
4-input to 3-output Video Switch
13
16
10
14
2
1
15
11
8
12
6
4
9
7
5
3
VIN1
SW2
V+
SW1
SW5
V–
GND
SW4
SW3
VOUT1
VOUT2
VOUT3
VIN2
20k
20k
20k
20k
20k
S3
S2
S4
S1
S5
6dB
AMP
75
Ω
DRIVER
20k
S6
S7
6dB
AMP
75
Ω
DRIVER
20k
6dB
AMP
75
Ω
DRIVER
VIN3
VIN4
VIN5
VOUT1
VIN1
VIN1
MUTE
VIN2
MUTE
VIN3
MUTE
VIN4
MUTE
VIN4
MUTE
VIN5
MUTE
VIN5
MUTE
MUTE
SW5
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
SW4
X
L
SW3
H
X
SW2
H
L
H
H
H
L
L
H
H
L
L
L
SW1
L
L
H
H
H
H
X
X
L
H
H
L
H
H
L
H
VOUT2
MUTE
MUTE
MUTE
VIN2
VIN2
VIN3
VIN4
VIN4
VIN4
VIN4
VIN4
VIN5
VIN5
VIN5
VIN5
MUTE
VOUT3
VIN1
MUTE
VIN1
MUTE
MUTE
VIN3
VIN4
VIN4
VIN4
MUTE
MUTE
VIN5
VIN5
MUTE
MUTE
MUTE
INPUTS
OUTPUTS
H: High level, L: Low level, X: Don't care.
IC395 : HD74HC153P
Dual 4 to 1 Data Selectors
INPUTS
SELECT
STROBE
Y
H: High Level
L: Low Level
X: Don't care
L
C0
C1
C2
C3
G
H
L
L
L
L
A
X
L
H
L
H
B
X
L
L
H
H
OUTPUTS
w w w
.
x i a o y
u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299