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Sanyo DTA-150 Service Manual page 10

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IC BLOCK DIAGRAM & DESCRIPTION
IC801 TA2109F (SERVO AMP)
SBAD 13
FEO 14
FEN 15
VRO 16
RFRP 17
RFIS 18
PEAK
BOTTOM
RFGO 19
RFGC 20
AGCI 21
RFO 22
GND 23
RFN 24
LDC
SEL
SW1
SW2
SW3
L
ON
OFF
OFF
HiZ
OFF
ON
ON
H
OFF
ON
ON
IC401 TC9422F (LATCH)
GND
INPUT
SELECTOR
L-IN1
2
3
L-IN2
L-IN3
4
GAIN CONTROL
0, 6, 12, 18dB
L-IN4
5
L-SW-OUT
6
L-VR-IN
7
L-B1
8
L-B2
9
L-B3
10
CAPACITOR FOR
OSCILLATION
L-Tone-OUT
11
L-T1
12
13
Vref
3 STATE
DET.
I - I
I - I
V
DD
1
28
INPUT
SELECTOR
27
26
25
GAIN CONTROL
0, 6, 12, 18dB
24
23
22
21
20
19
CAPACITOR FOR
OSCILLATION
18
17
32BIT SR
14
15
16
CK
DATA
STB
IC203 HT1622-64QFP (Display controller)
12
TEO
11
TEN
OSCI
7
10
2 VRO
CS
1
RD
3
9
TEB
WR
4
8
SEL
DATA
5
7
LDO
VDD
8
6
MDI
VSS
6
5
TNI
Tone Frequency
BZ
11
Generator
13
BZ
4
TPI
3
FPI
IC101 TA2104BN(TUNING SYSTEM)
2
FNI
FM
RF
AM
1
Vcc
RF OUT
Vcc
RF IN
24
23
22
AM
MIX
FMRF
1
2
3
RF
FM
AM
GND
RF IN
LOW
CUT
IC501 TA8227P (POWER AMP.)
R-IN1
R-IN2
R-IN3
R-IN4
R-SW-OUT
R-VR-IN
R-B1
R-B2
R-B3
R-Tone-OUT
R-T1
- 9 -
Display RAM
Control
and
Timing
Circuit
LCD Driver/
Bias Circuit
Watchdog Timer
and
Time Base Generator
FM
AM
OSC
ST
IF
OET
OSC
OSC
OUT
LED
REQ
OUT
21
20
19
18
17
16
AM
IF
OSC
REQ
SW
ST
FM
AF
OSC
BUFF
BUFF
IF
BUFF
AM
BUFF
ST
OSC
AM
DET
FM
AGC
AMIF
FMIF
MIX
4
5
6
7
8
9
MIX
Vcc
AM
FM
GND
AGC
OUT
IF IN
IF IN
17 COM0
25 COM7
26 SEG0
64 SEG31
9
VLCD
10 IRQ
LPF1
LPF2
15
14
13
AF
VCO
DECODE
DIVIDE
FM
ST/MO
DET
FM/AM
MJTE
10
11
12
QUAD R-OUT
L-OUT

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