HCD-GRX8 Datasheet, PDF (17/20 Pages) Sony Corporation – SERVICE MANUAL

HCD-GRX8/R800/RX88/RX99
7-30. IC BLOCK DIAGRAMS
• Tuner section
IC21 LC72130
24 23 22 21
20
19
18 17
16
15
14
13
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
REFERENCE
DIVIDER
SWALLOW COUNTER
1/16, 1/17 4BITS
POWER
ON
1/2
RESET
12BITS PROGRAMMABLE
DRIVER
C²B
I/F
1 2 3456
DATA SHIFT REGISTER LATCH
UNIVERSAL
COUNTER
7
8 9 10 11
12
IC41 LA1838
30
29 28
27 26 25
24 23
22
REG
ALC _AM
OSC
BUFF
SD
COMP
AM
AM
MIX RF. AMP
AGC
AM
IF
DET
FM
S METER
S-CURVE
AM/FM
IF
BUFF
FM
FM
IF
DET
AM
S METER
TUNING
DRIVE
GND
VCC
1
23
45
6
7 8 9 10
21 20
19
18 17 16
DECODER
ANTI BIRDIE
STEREO
DRIVE
STEREO
SW
FF FF FF
VCO
PHASE
DET
PILOT
DET
MUTE
11 12
13
14
15
– 83 –
IC1701 IR3R42
20
19 18
1/2 1/2
AMP
PHASE
17
16 15 14 13 12 11
AMP
OSC
PHASE
COMPARATOR
PHASE
COMPARATOR 2
TRIGGER
REGULATOR
WAVEFORM
SEP.
AMP
GATE
SAMPLE
& HOLD
BUFFER
MUTE
12
3
4 5 67 8
9
10
IC1702 MC14053BCP
B1 1
B0 2
C1 3
C.COM 4
CO 5
INH 6
VEE 7
VSS 8
OPEN
OPEN
OPEN
16 VDD
15 B.COM
14 A.COM
13 A1
12 A0
11 A
10 B
9C
IC1751 NJM4558D
A OUT 1
A IN– 2
A IN+ 3
VEE 4
A
B
+–
8 VCC
7 B OUT
6 B IN–
5 B IN+
IC1752 BU1922
16
15
14
13
12
11
10
9
QUALITY BIT
GENERATOR
OSCILLATOR
AND
DIVIDER
RECONSTRUCTION
FILTER
57kHz
BANDPASS
(8th ORDER)
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
ANTI-
ALIASING
FILTER
DEFFERENTIAL
DECODER
BIPHASE
SYMBOL
DECODER
1
2
3
4
CONTAS LOOP
VARIABLE AND
FIXED DIVIDER
CLOCKED
COMPARATOR
CLOCK REGENERATION
AND SYNC
VP1
REFERENCE
VOLTAGE
5
6
7
8
– 84 –