Denon AVR-1804 Service Manual

16
16
AVR-1804/884 / AVC-1880
MM74HC4053MX (IC1001, 1004, 1008)
1
2
V
EE
3
4
5
6
7
8
9
10
11
16
15
14
13
12
Y1
Y0
Z1
Z
Z0
Enable
GND
Vcc
Y
X1
X
X0
C
A
B
X = Don’t Care
X = Don’t Care
Truth Table
Control Inputs
Select
Enable C B A
ONSwitches
L L L L Z0 Y0 X0
L L L H Z0 Y0 X1
L L H L Z0 Y1 X0
L L H H Z0 Y1 X1
L H L L Z1 Y0 X0
L H L H Z1 Y0 X1
L H H L Z1 Y1 X0
L H H H Z1 Y1 X1
H X X X None
Truth Table
KIC9459F (IC706)
BU4052BCF
(IC601D,602D)
Y 0
Y 2
COMMON Y
Y
3
Y 1
INH
V
EE
Vss
V DD
X 2
X 1
COMMON X
X
0
X 3
A
B
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
B
X
2
X 1
XOUT
/IN
X
0
X
3
A
Y
2
YOUT
/IN
Y3
Y
1
INH
V
EE
Y 0
L-LD2
8
L-ch7 to 91decoder
R-ch latch circuit
R-ch7 to 91decoder
9
16
19
3
2
4
5
6
7
10
11
12
24
22
23
21
20
18
17
15
14
13
1
NC
L-OUT
L-IN
L-LD1
L-A-GND
NC
NC
GND
CK
V
SS
V
DD
NC
R-OUT
R-LD1
R-LD2
R-A-GND
NC
CS2
NC
STB
DATA
R-IN
50kohm/
91STEP
VR
Same
as L-ch
L-ch latch circuit
Shift register (24Bit)
Level shift circuit
CS1
INH B ON SwitchesA
X
0 Y 0
X 1 Y 1
X 2 Y 2
X 3 Y 3
L
L
L
H
HL
HH
X NONEX
L
L
L
L
H
MM74HCT244 (IC812)
20 1
19 2
18 3
17 4
16 5
15 6
14 7
13 8
12 9
11 10
1G
2G
1A
0
2A
0
2A
3
2Y
0
1Y
0
1Y
3
1A
1
2Y
1
1A
2
2Y
2
1Y
1
2A
1
1Y
2
2A
2
1A
3
2Y
3
GND
V
CC
BA7625 (IC605D)
BA7626 (IC603D,604D,651-654,
1000,1002)
7
8
16
15
14
13
12
11
10
9
Monitor OUT
GND
IN5
GND
IN4
CTL E
IN3
CTL D
IN1
CTL A
V OUT1
Vcc
IN2
CTL B
V OUT2
CTL C
6dB
6dB
LOGIC
LOGIC
Note 1: * mark means that
feasible for either H or L.
Note 2: Each input terminal is
provided with sink chip
clamp (BA7625).
Each input terminal takes
20kohm at the end (BA7626).
C D E V OUT 2
LL* IN 1
HL *

LH* IN 3
HHL IN 4
HHH IN 5
C D E V OUT 1
LL*

HL * IN 2
LH* IN 3
HHL IN 4
HHH IN 5
ABE
MONITOR OUT
LL* IN 1
HL * IN 2
LH* IN 3
HHL IN 4
HHH IN 5
TC9184AP (IC552)
2
3
4
5
6
1
16
78
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

Denon AVR-1804 Specifications

General

Brand	Denon
Model	AVR-1804
Category	Receiver
Language	English