Ic Block Diagrams - Sony HCD-VX555 Service Manual

HCD-VX555/VX555J

6-29. IC BLOCK DIAGRAMS

IC11 LA1845 (MAIN BOARD)
LEVEL
IC51 LC72131 (MAIN BOARD)
IC105 BU4052BCF-E2 (MAIN BOARD)
0
Y0 1
2
Y1 2
Y 3
3
Y3 4
1
Y1
5
INH 6
VEE
7
VSS 8
58
24 23 22 21 20
ALC AM
AM AM
PF.AMP
OSC MIX
BUFF
AGC
AM
IF
AM/FM
DET
IF
COMP
S-CURVE
BUFF
TUNING
FM
FM
DRIVE
IF
DET
REG GND
1 2 3 4 5
20 19 18 17 16
PHASE
DETECTOR
CHARGE PUMP
REFERENCE
UNLOCK
DIVIDER DETECTOR
SWALLOW COUNTER
1/16, 1/17 4BITS
CCB
INTERFACE
1 2 3 4 5
16
VDD
2
15
X2
1
14 X1
X
13
0
12
X0
3
X3
11
SELECT A
A
10
SELECT B
B
9
19 18 17 16
DEOODER
ANTI-BIRDIE
P-DET
STEREO
AM
ø
SW
DET
VCO FF
304kHz 38k
V
CC
6 7 8 9
15 14
POWER
1/2
ON
RESET
12BITS
PROGRAMMABLE
DRIVER
DATA SHIFT REGISTER LATCH
6 7 8 9 10
IC302 µPC1330HA (MAIN BOARD)
2
1
SW R1 GND
15 14 13
PILOT
CANCEL
FF FF PILOT
π
19k 19k 0 DET
2
10 11 12
13 11
12
UNIVERSAL
COUNTER
INVERTER
COMPARATER
3 4 5 6 7 8
SW P1 CONT GND VCC
SW P2 GND
9
SW R2