Sony HCD-D790 Service Manual page 57

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3 7 63 1515 0
– TUNER SECTION –
IC21 LC72130
24 22
23 21
REFERENCE
DIVIDER
2
C B
I / F
3
1 2 4
IC1752 BU1922
16 15
TE
L 13942296513
QUALITY BIT
GENERATOR
DEFFERENTIAL
DECODER
1 2
IC41 LA1838
30 29 28 27
REG
ALC
AM AM AM
OSC MIX RF. AMP
BUFF
SD
COMP
www
AM/FM
IF
FM
S-CURVE
BUFF
S METER
FM FM
IF DET
.
2 3
1
http://www.xiaoyu163.com
20 19 17 16 15
18
SWALLOW COUNTER
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
6 8 9 10
5 7
14 13 12
57kHz
OSCILLATOR
RECONSTRUCTION
BANDPASS
AND
FILTER
(8th ORDER)
DIVIDER
BIPHASE CONTAS LOOP
SYMBOL VARIABLE AND
DECODER FIXED DIVIDER
CLOCK REGENERATION
AND SYNC
REFERENCE
VOLTAGE
3 4 5
26 25 24 23 22
DECODER
ANTI BIRDIE
AGC
AM
DET
IF
FF
VCO
AM
S METER
x ao
y
TUNING
DRIVE
i
GND
VCC
4 5 6 7 8 9 10 11
http://www.xiaoyu163.com
8
IC1701 IR3R42
14 13
20
AMP
1/2
REGULATOR
1
C B
I / F
11 12
11 10 9
Q Q
3 6 7 1 3
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
ANTI-
ALIASING
FILTER
CLOCKED
COMPARATOR
VP1
6 7 8
21 20 19 18 17 16
STEREO
SW
STEREO
DRIVE
MUTE
FF FF
PILOT
DET
PHASE
u163
DET
.
12 13 14 15
— 83 —
2 9 9 4 2 8
19 18 17 16
AMP
PHASE
1/2 1/2 OSC
COMPARATOR
PHASE
WAVEFORM
SEP.
AMP
SAMPLE
GATE
& HOLD
BUFFER
2 3 4 5 6 7
IC1702 MC14053BCP
B1 1
B0 2
OPEN
C1 3
C.COM 4
OPEN
CO 5
1 5 0 5 8 2 9 9 4
INH 6
VEE 7
OPEN
VSS 8
IC1751 NJM4558D
A OUT 1 8
A 7
– +
A IN– 2
B
+ –
A IN+ 3 6
VEE 4 5
m
co
9 9
15 14 13 12 11
PHASE
COMPARATOR 2
TRIGGER
MUTE
8 9 10
VDD
16
B.COM
15
14 A.COM
13
A1
A0
12
2 8 9 9
11
A
10 B
C
9
VCC
B OUT
B IN–
B IN+