Denon AVR-1882 Service Manual page 10

LC72131 (IC401)
X I N 1 2 0 X O U T
C E 2 1 9 V s s
D I 3 1 8 A O U T
C L 4 1 7 A I N
D O P D
1 6
5
B O 1
V D D
6 1 5
B O 2 F M I N
1 4
7
B O 3 A M I N
8 1 3
B O 4 I O 2
9 1 2
I O 1 I F I N
1 0 1 1
BU2090F (IC302, 602)
VSS 1
CONTROL CIRCUIT
DATA 2
12-bit SHIFT RESISTER
CLOCK 3
LCK 4
12-bit STRAGE RESISTER
Q0 5
OUTPUT BUFFER (OPEN DRAIN)
Q1 6
Q2 7
Q3 8
Q4 9
MM74HC151 (IC832)
TOP VIEW
3
1
2
D2 D3
DATA
2
INPUTS
1
D1
3
0
D0
4
Y
Y
5
OUTPUTS
W
W
6
STROBE S C
7
GND
8
LA1266 (IC402)
1 24
12 13
LA3401 (IC403)
22 21
V O L
O S C
R E G
S Y M M E T R I C A L
R E O C T A N C E
C I R C U I T
F F
M U T I N G
F M A M C H A N G E
2 3
1
TDA7330BD (IC202)
18
VDD
MUXIN 1
17 OE
V 2
REF
16 Q11
COMP 3
15 Q10
Q9
14
FILOUT 4
13 Q8
GND 5
12
Q7
T1 6
Q6
11
T3 7
Q5
10
T4 8
OSCOUT 9
10
OSCIN
Vcc
16
4
D4
15
5
D5
DATA
14
INPUTS
6
D6
13
7
D7
12
A A
11
DATA
B B
SELECT
10
C
9
A M - I F F M - I F
20 18 11 13 10
I F I F
B U F F E R
B U F F E R
A M - I N R F M I X
21
O S C
R E G O S C
B U F F E R
22 23 24
19 18 16
20 17 15
P H A S E
P I L O T D E T
C O M P A R A T O R
V C O S T O P
F F
F F F F
F F
3 8 k H z
3 8 k H z 9 0 ° 1 9 k H z 9 0 °
M U T I N G C O N T R O L
D E C O D E R
F M A M C H A N G E O V E R
R o
R b
R b
R c
V c c O N
M U T I N G
R c
4
5 6 8 9
7
TOP VIEW
20 POR
19 TM
18 FSEL
17
T2
16 V
CC
15 ARI
14 QUAL
13 RDDA
12 RDCL
11
T57
RC1117S25T (IC820)
RC1117S33ST (IC811)
FRONT VIEW
3
V 2 2
OUT
1
AVR-1802/882
F M - I N
2 3 5 6 7
1
V c c
P O S T
F M - I F Q . D .
A M P
A M - I F D E T
N A R R O W L E D
A G C S - M E T E R
S - M E T E R D R I V E R
G N D
14 19 17 16
4
14
13 12
L A M P
D R I V E R
T R I G G E R
S T E R E O
S W I T C H
M U T I N G
O U T P U T
11
10
MM74LCX244 (IC818,819)
TOP VIEW
1 20
OE VCC
2 19
I0 OE2
3 18
O4 O0
17
4
I1 I4
5 16
O5 O1
6 15
I2 I5
7 14
O6 O2
8 13
I3 I6
9 12
O7 O3
10 11
GND I7
IN
OUT
ADJ/GND
12
9
15
8
10