Denon AVR-5803 Service Manual page 37

QQ
3 7 63 1515 0
LA3401
(IC302/AVR-5803 only)
22
21
V OL
OSC
REG
SYMMETRI CAL
REOCTANCE
CI RCUI T
F F
MUTI NG
F M AM CH ANGE
1
2
3
LA1265 (S)
(IC303/AVR-5803 only)
TE
L 13942296513
15
17
19
18
RF Amp
Buffer
Osc.
21
22
TA8772AN (IC615)
30 29 28
1 1
× × × ×
1 or 1 or
2 2
Pulse Pulse
Elimination Elimination
+
www
+
.
1 2 3
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19 18 17
20 16
PH ASE
PI L OT DET
COMPARATOR
V CO STOP
F F
F F F F
F F
38k H z
38k H z 9 0° 19 k H z 9 0°
MUTI NG CONTROL
DECODER
F M AM CH ANGE OV ER
Ro
Rb
Rb
Rc
Rc
4 5
6 7 8
22
1
1 2 3 5
FM IF
Q Det
Level Level
Det.
Det.
Mix. AM IF
Det.
Reg.
AGC
GND
20 4
16
27 26 25 24 23 22
LPF LPF
Clamp Clamp
AGC AGC
Pulse Pulse
AGC
Insertion Insertion
Detector
Clamp Clamp
AGC
Detector
x ao
y
i
1/225
Pulse 225f H
Detector
HG. GP VCO
4 5 6 7 8 9
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8
LC72131M
(IC307/AVR-5803 only)
15 14
13 12
L AMP
DRI V ER
TRI GGER
STEREO
SW I TCH
MUTI NG
OUTPUT
V cc ON
MUTI NG
9 11
10
11
Q Q
3 6 7 1 3
6
7
Vcc
P o s t
10
Amp
S Curve
9
12
LED
8
Driver
S meter SD Adj
11 13 14
21 20 19 18 17 16
REF REF
S / H S / H
u163
CCD 1H CCD 1H
.
Average
Bias
Clock
10 11 12 13 14 15
AVR-5803/AVC-A1SR
2 9 9 4 2 8
XI N 1
CE
2
DI 3
CL 4
DO
5
BO1
6
BO2
7
BO3
8
BO4
9
I O1
10
1 5 0 5 8 2 9 9 4
m PD4721GS-GJG (IC501)
V 1 20
DD
C1+ 19
2
Vcc 18
3
C1-
4 17 17
16
5 16
C5+
6 15 15
m
C5-
300 W
7 14
D 1
IN
300 W
co
13
8
D 2
IN
9 12
R 1
OUT
5.5 kW
11
R 2 10
OUT
5.5 kW
9 9
XOUT
20
19 V ss
18 AOUT
17 AI N
PD
16
V
15
DD
F MI N
14
AMI N
13
I O2
12
I F I N
11
2 8 9 9
C4+
GND
C4-
Vss
STBY
V
CHA
D 1
OUT
D 2
OUT
R 1
IN
R 2
IN
37