Denon AVR-1802 - LC72131 (IC401); LA1266 (IC402); LA3401 (IC403); BU2090 F (IC302, 602)

10
AVR-1802/882
1
2
3
4
5
6
7
8
18
17
16
15
14
13
12
11
Q3
VDD
OE
Q7
Q8
Q11
Q10
Q9
Q6
VSS
DATA
CLOCK
LCK
Q0
Q1
Q2
9
10
Q4
Q5
CONTROL CIRCUIT
12-bit SHIFT RESISTER
12-bit STRAGE RESISTER
OUTPUT BUFFER (OPEN DRAIN)
BU2090F (IC302, 602)
1
MM74LCX244 (IC818,819)
RC1117S25T (IC820)
RC1117S33ST (IC811)
2
3
2
ADJ/GND
OUT
IN
MM74HC151 (IC832)
V
OUT
FRONT VIEW
LA1266 (IC402)
10
4
1
3
8
19
15
17
18
14
21
22
GND
Vcc
5
11
IF
BUFFER
IF
BUFFER
2
F M - IF
6
Q.D.
7
REG
23
OSC
OSC
BUFFER
24
NARROW
S-M ETER
S-M ETER
16
LED
DRIVER
RF MIX
12
20
AM -IF DET
AGC
POST
AM P
9
13
AM -IF FM -IF FM-IN
AM -IN
20
19
18
17
16
15
14
13
12
9
8
7
5
6
1
21
LA3401 (IC403)
22
VOL
REG
OSC
SYM M ETRICAL
REOCTANCE
CIRCUIT
PHASE
CO M PARATOR
VCO STOP
PILOT DET
FF
FF
FF
38kH z
FF
38kH z 90°
FF
19kH z 90°
MUTING
FM AM CHANGE
Ro
Rc
Rc
Rb
2
3
4
DECODER
M UTING CO NTR O L
FM AM CHANGE OVER
Vcc O N
MUTING
MUTING
OUTPUT
STEREO
SW ITCH
TRIG G ER
LAM P
DRIVER
Rb
10
11
LC72131 (IC401)
1
20
2
19
3
18
417
5
16
6
15
7
14
8
13
9 12
10 11
XIN
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO 1
AOUT
AIN
PD
VDD
FM IN
AM IN
IO 2
IF IN
Vss
XOUT
TDA7330BD (IC202)
TOP VIEW
POR
MUXIN
TM
V
REF
FSEL
COMP
T2
FILOUT
V
CC
GND
ARI
T1
QUAL
T3
RDDA
T4
RDCL
OSCOUT
T57
OSCIN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
124
12 13
1
2
3
4
5
6
7
8
20
19
18
16
15
14
13
I3
VCC
OE2
O2
I5
O0
I4
O1
I6
OE
I0
O4
I1
O5
I2
O6
912
O7 O3
10
11
GND I7
TOP VIEW
D4
D5
D6
D7
A
B
D2
D1
D0
Y
W
S
D3
C
4
5
6
7
A
B
C
Vcc
15
14
13
12
11
10
9
16
2
3
4
5
6
7
8
1
2
1
0
Y
W
ST ROBE
GN D
3
DATA
INPUTS
OUTPUTS
DATA
INPUTS
DATA
SELECT
TOP VIEW
17