Ic Block Diagrams - Sony HCD-GRX8 Service Manual

HCD-GRX8/R800/RX88/RX99
www.DataSheet4U.com

7-30. IC BLOCK DIAGRAMS

• Tuner section
IC21 LC72130
20 19 18 17 16
24 23 22 21
PHASE DETECTOR
CHARGE PUMP
UNLOCK
POWER
DETECTOR
ON
RESET
REFERENCE SWALLOW COUNTER
DIVIDER 1/16, 1/17 4BITS
12BITS PROGRAMMABLE
DRIVER
C 2 B
DATA SHIFT REGISTER LATCH
I/F
1 2 3 4 5 6 7 8 9 10
IC41 LA1838
30 29 28 27 26 25 24 23 22
REG
ALC
AM AM AM
OSC MIX RF. AMP
BUFF
AGC
SD
COMP
AM
DET
IF
AM
AM/FM
S METER
IF
FM
S-CURVE
BUFF
S METER
TUNING
DRIVE
FM FM
IF DET
GND
VCC
1 2 3 4 5 6 7 8 9
15 14
13
1/2
UNIVERSAL
COUNTER
11 12
21 20 19 18 17 16
DECODER
ANTI BIRDIE
STEREO
SW
STEREO
DRIVE
MUTE
FF FF FF
VCO
PILOT
DET
PHASE
DET
12 13
10 11 14 15
– 83 –
IC1701 IR3R42
20 19 18 17 16 15 14 13
AMP
PHASE
1/2 OSC
1/2
COMPARATOR
AMP
PHASE
PHASE
COMPARATOR 2
WAVEFORM
SEP.
AMP
REGULATOR
SAMPLE
GATE & HOLD MUTE
BUFFER
1 2 3 4 5 6 7 8 9
IC1702 MC14053BCP
B1 1 VDD
16
B.COM
B0 2 15
OPEN
C1 3 14 A.COM
C.COM 4 13 A1
OPEN
CO 5 12 A0
6 11 A
INH
VEE 7 10 B
OPEN
VSS 8 9 C
IC1752 BU1922
16 15 14 13 12
OSCILLATOR
QUALITY BIT
RECONSTRUCTION
AND
GENERATOR
FILTER
DIVIDER
BIPHASE
DEFFERENTIAL
SYMBOL
DECODER
DECODER
1 2 3 4 5
12 11
TRIGGER
10
IC1751 NJM4558D
A OUT 1 8 VCC
A 7 B OUT
– +
A IN– 2 B
+ –
A IN+ 3 6 B IN–
VEE 4 5 B IN+
11 10 9
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
57kHz ANTI-
BANDPASS ALIASING
(8th ORDER) FILTER
CONTAS LOOP
CLOCKED
VARIABLE AND
COMPARATOR
FIXED DIVIDER
CLOCK REGENERATION
AND SYNC
VP1
REFERENCE
VOLTAGE
6 7 8
– 84 –