Block Diagram Of Ic - Sharp QT-90W Service Manual

QT-90W
IC102: LA1805
3
22
RF AMP
23
RNG.
24
IC101: LA1186N
VRE1
MIX
RF
1 2 3 4
IC501: LB1403N
2
1 3
Vc2
Vc1 Vc3
IC301: BA4558
INPUT1 NF1
Pre a.
Gnd
7 8 9
Small ripple
filter
5 4
6
DC 1
INPUT2
NF2

BLOCK DIAGRAM OF IC

5 1 2
FM IF DCT
MIX
LEVEL DET
AM IF
DET
OSC AGC
GND
4
6
BUTTER
REG
5 6 7
6
4 5
Vc4 Vc5 Amp. Out
GND
BS1 OUTPUT1 Vcc
Power a. Gnd 10
11
Fin
52
20K
OUTPUT
INPUT
AMP 1
AMP 1
INPUT
OUTPUT
AMP 2
AMP 2
20K
62
Fin
Power a. Gnd 2
3
BS2 OUTPUT2
FM
AM
20 17 16 11 13 15
POST
AMP.
MUTING
PHASE DET
TUNING
DECODER
INDIC.
DRIVE
8
9
12 19 18
OUT 1
NF 1
OSC
IN 1
GND
8 9
IN 2
11
NF 2
amp
9
7 8
Vcc
In
IC401/IC402: BA5415A
µ - COM
12
33K
47µ
47µ
1K
1
DC2
– 14 –
7
14
STEREO
PILOT DET
TNG.
INDIC.
DRIVE
VCO FF
STEREO
SW
10
IC201: BA3313L
1
150K
3
5
ALC
7
9
150K
about
90µA
(at 5V)
ST. RY
6 1
5
270
4
44K
7
100µ
44K
9
33
8
12
GND
Vcc
21
Vcc
FF
FF
2 ALC
4
N.C.
GND
6
(SUB)
8
VCC
10
FILTER
12
OUT 2
VCC
0.1µ
1000µ
0.1µ
3
47µ
2
1000µ
1000µ
11
47µ
10