Ic Block Diagrams - Sony HCD-D890AV Service Manual

6-31. IC BLOCK DIAGRAMS

• Tuner section
IC21 LC72130
24 22 20
23 21
SWALLOW COUNTER
REFERENCE
DIVIDER
2
C B
I / F
1 2 3 4
IC41 LA1838
30 29 27 26 25
28
REG
ALC
AM AM AM
RF. AMP
OSC MIX
BUFF
AGC
SD
COMP
AM
IF
AM
AM/FM
S METER
IF
FM
S-CURVE
BUFF
S METER
TUNING
DRIVE
FM FM
DET
IF
GND
1 2 3 4 5
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19 17
18 16
1/16.1/17 4bits
POWER
ON
REFERENCE
RESET
DIVIDER
SWALLOW COUNTER
1/16.1/17 4bits
PHASE DETECTOR
CHARGE PUMP
DATA SHIFT REGISTER
LATCH
5 6 7 8 9
24 23 22 21
DECODER
ANTI BIRDIE
DET
FF
VCO
PHASE
VCC
6 7 8 9 10 11
– 85 –
15 14 13
1/2
C B
I / F
10 11 12
20 19 18 17 16
STEREO
SW
STEREO
DRIVE
MUTE
FF FF
PILOT
DET
DET
13
12 14 15