Denon AVR-2802 Service Manual

23
AVR-2802/982
SN74LV244APW (AU: IC818, 825)
1
2
3
4
5
6
7
8
10
9
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
Vcc
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
INPUT
OUTPUT
OE A Y
L H H
L L L
H X Z
FUNCTION TABLE
(each buffer)
TOP VIEW
BU4053BCF (AU:IC256)
MM74HC4053SJ (AU: IC451)
C9
1
2
V
EE
3
4
5
6
7
8
9
1 0
11
1 6
1 5
1 4
1 3
12
Y1
Y0
Z-COM
Z0
INH
Vss
V
DD
Y-COM
X-COM
X1
X0
C
A
B
Z1
LEVEL
CONVER
-TER
BINARY TO 1 of 2
DECODER WITH INHIBIT
14 X
Z1 3
Z0 5
Y1 1
Y0 2
X1 13
X0 12
V
EE
7
B10
INH6
Vss8
A11
V
DD
16
15 Y
4 Z
TOP VIEW
L-LD2
9
L-ch7 to 91decoder
R-ch latch circuit
R-ch7 to 91decoder
10
19
NC
22
NC
3
2
4
5
6
7
8
11
12
13
14
28
27
26
25
24
23
21
20
18
17
16
15
1
NC
L-OUT
NC
L-IN
L-LD1
L-A-GND
NC
CS1
NC
GND
CK
V
SS
V
DD
NC
R-OUT
R-LD1
R-LD2
R-A-GND
NC
CS2
NC
STB
DATA
R-IN
50k
Ω
/
91S
TEP
VR
Same
as L-ch
L-ch latch circuit
Shift register (24Bit)
Level shift circuit
TC9459N
(EX: IC805)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Vss
NC
L-OUT
NC
L-IN
L-LD1
L-LD2
L-A-GND
NC
CS1
GND
CK
V
NC
R-OUT
NC
R-IN
R-LD1
R-LD2
R-A-GND
NC
CS2
DATA
NC
STB
NC
NC
DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Vss
NC
L-OUTA
L-A-GNDB
CS1
GND
CK
V
TEST
R-OUTA
R-A-GNDB
DATA
L-A-GNDC
STB
DD
L-INC
L-OUTC
L-INB
L-OUTB
L-A-GNDA
L-INA
CS2
R-A-GNDC
R-INC
R-OUTC
R-INB
R-OUTB
R-A-GNDA
R-INA
TC9482N
(EX: IC809)
TOP VIEW TOP VIEW
TC9184AP (EX: IC102)
2
3
4
5
6
1
16
7
8
9
10
15
14
13
12
11
BASS+
BASS-
COM
TREBLE-
TREBLE+
VSS VDD
GND
CK
DATA STB
BASS+
BASS-
COM
TREBLE-
TREBLE+
Ladder resister
Analog switch
13 bit latch circuit
Level shift
20 bit Shift register circuit
Analog switch
Ladder resister
Ladder resister
Analog switch
13 bit latch circuit
Code
detect
circuit
Analog switch
Ladder resister
BASS+
BASS-
COM
TREBLE+
TREBLE-
GND
CK
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
STB
DATA
Vss
5
DD
TREBLE+
TREBLE-
COM
BASS+
BASS-
TOP VIEW
NC
NC

Denon AVR-2802 Specifications

General

Brand	Denon
Model	AVR-2802
Category	Stereo Receiver
Language	English