Sony HCD-E301 Service Manual page 22

HCD-E301
• IC Block Diagrams
– MAIN Board –
IC101 LA1823
24 23 22 21 20 19 18 17 16
GND2 VCC2 MUTE
FM
DECODER
OSC
FM
RF
ST SW VCO
FM
MIX
TRIG
AM AM
RF MIX
SD ST
AM OSC
OSC BUFFER
IF
BUFFER
REG VCC1 GND1
1 2 3 4 5 6 7 8
IC102 LC72131
22 21 19 18 17
20
PHASE
DETECTOR
CHARGE PUMP
POWER
REFERENCE UNLOCK
ON
DIVIDER DETECTOR
RESET
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
CCB
DATA SHIFT REGISTER LATCH
INTERFACE
1 2 3 4 5 6 7 8 9 10 11
15 14 13
PHASE PILOT FM
COMP DET DET
FF FF FF
FM AM
AGC
S-METER DET
FM AM
IF IF
9 10 11 12
16 15 14 13 12
1/2
UNIVERSAL
COUNTER
IC203 LC75392
LVROUT 1
LVRIN 2
+ +
LTOUT 3
– –
4
LTCOM
LT4 5
LATCH
LT3 6
LT2 7
LT1 8 DECODER
L4 9
L3 10
SHIFT
REGISTER
L2 11
L1 12
VDD 13
CL 14
CONTROL
DI 15
– CASSETTE Board –
IC701 AN7312
14 13 12 11 10 9 8
RIPPLE FILTER
AMP. CH2
ALC
AMP. CH1
1 2 3 4 5 6 7
22 22
30 RVROUT
29 RVRIN
+
28 RTOUT
–
27
RTCOM
26 RT4
25 RT3
24 RT2
23 RT1
22 R4
21 R3
20 R2
19 R1
18 VREF
17 VSS
16 CE