Table Of Contents - Denon AVR-1804 Service Manual

BU4052BCF
(IC601D,602D)
Y V
0 1 16 DD
Y
0
Y 2 15 X
2 Y X 2
2 2
YOUT
COMMON Y 3 14 X
X 1
1
/IN
XOUT
13
Y 4 COMMON X
3 Y3
/IN
Y 5 X
1 Y X 12 0
1 0
6
INH X 11 X
INH 3 3
7
V 10 A
EE V A
EE
B
Vss 8 9 B
MM74HC4053MX (IC1001, 1004, 1008)
Y1
1 16
Vcc
Y0
2 15
Y
X1
Z1 3 14
X
4 13
Z
5 12 X0
Z0
6 C
Enable 11
V A
EE 7 10
GND
8 9 B
BA7625 (IC605D)
BA7626 (IC603D, 604D, 651-654,
1000,1002)
Monitor Out
GND
6dB
IN5
LOGIC
GND
IN4
6dB
CTL E
IN3
7 LOGIC
CTL D 8
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).
Truth Table
INH A B ON Switches
L L L
L H L
L L H
L H H
H X X NONE
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
X = Don't Care
A B E MONITOR OUT
16 IN1
L L *
CTL A
15
H L *
L H *
14 V OUT1
H H L
13 Vcc
H H H
12
IN2
C D E V OUT 1
11 CTL B
L L *
10 V OUT2
H L *
9 CTL C
L H *
H H L
H H H
C D E V OUT 2
L L *
H L *
L H *
H H L
H H H
X Y
0 0
X Y
1 1
X Y
2 2
X Y
3 3
KIC9459F (IC706)
NC
3
L-Out
2
50kohm/
91STEP
L-In
4
VR
L-LD1
5
L-LD2
6
L-A-Gnd 7
NC
8 L-ch7 to 91decoder
L-ch latch circuit
CS1
9
NC
10
GND
11
CK
12
TC9184AP (IC552)
1
IN 1
IN 2
2
Bass+
IN 3
IN 4
IN 5
3
Bass-
4
COM
IN 2
5
TREBLE-
IN 3
IN 4
IN 5
6
TREBLE+
IN 1
IN 3
IN 4
IN 5
16
Avr-1804/884 / Avc-1880
V V
SS DD
1 24
NC
22
R-OUT
23
R-IN
Same as L-ch
21
R-LD1
20
R-LD2
19
R-A-GND
18
NC
17
R-ch7 to 91decoder
R-ch latch circuit
CS2
16
Shift register (24Bit)
Level shift circuit
NC
15
STB
14
DATA
13
16
7 8 9 10
Level shift
Code
detect
circuit
MM74HCT244 (IC812)
1
1G
2
1A 0
3
2Y 0
4
1
1A
5
1
2Y
2 6
1A
2Y 2 7
3 8
1A
3
2Y 9
10
GND
16
15 BASS+
14 BASS-
13 COM
12
TREBLE-
11
TREBLE+
20 V
CC
19 2G
18 0
1Y
17 0
2A
16 1
1Y
15 1
2A
14 1Y 2
2
13 2A
3
12 1Y
11 3
2A