Schematic Diagram - Main Board (1/3) - Sony HCD-LX20i Service Manual

6-6.

SCHEMATIC DIAGRAM - MAIN Board (1/3) -

1 2
(1/3)
MAIN BOARD
A
J802
3P
ANTENNA
FM/AM
B
AM-LOOP ANT
1
AM-LOOP ANT
2
FM-WIRE ANT 3
CF805
C871
C870 I
100p 100p
BPF
G
D812
MC2837
C
TRACKING
C801
0.1
FM VT
VOLTAGE
D
E
F
G
H
CF801
I O
CF
G
I
R825
470
R831
220
J
3
MAIN
BOARD
(3/3)
(Page 23)
HCD-LX20i
• See page 17 for Waveforms. • See page 28 for IC Block Diagrams.
3 4 5
L851
AM
TRACKING
L851
C875 C874
C855
220uH
100p 220p
100p
AM RF
G4
6 1
D851
SVC347A-TL-E
5 2
4 3
G3
R851
10k
O
C851 R853 C854 C856
100k 4p 5p
0.1
D803
SV230-TB-E
R807
R805 R808
100k 100k
D802 10k
SV230-TB-E
C819
C806
1000p
1000p
C804 L804
L804
0.1 FM RF
C809
FM
0.1
MA2J1110GLS0
L805
R803
L805
10
R806 FM OSC
C805
0
0.01
C803 0.01 C802 1
R802
10
IC B/D
36 35 34 33
IC801
AM/FM-DET,
OSC, MIX, PLL,
IF AMP
IC801
1 2 3
LV23003VA
C810
1
C814
0.1
JW801
R826
100
R821
220
R823
100
R824 C873
1000P
2.2k
L803
AM IF
Q803 G2
2SC3053TP-1C 3 4
3.5
FM MIX AMP
0.8
2 CF803
0
1 6
G1
R854
C812
47
1
6 7 8
L852
120uH
AM OSC
C853
R839
0.1
JW821 R811
220
(VT)
4.7k
R809
1k
R863
22k
VT001
C820
1000p
C817
1
D805
R813
10k
C823 C824
18p
18p
R815
4.7k
C825
1
X801
75kHz
11
R819
47k
R817
10k
32 31 30 29 28 27 26 25 24 23 22 21 20 19
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
C811
1
R848
1k
R822
2.2k
R840
22k
C832
1 R836
10k
1 2 3
TP
(TUNER OUT R-ch)
L806
FM
TP
DETECTOR (TUNER OUT L-ch)
6 4
L806
FM DET
C887 C888
4700p 4700p
21 21
9 10 11
1
3
R847
22
MAIN
R866
BOARD
10k
(2/3)
R844
10 (Page 22)
Q801 R845
2SC3052F-T1-LF 22
REGULATOR
3 9.2
C838
R842
0.1
47k
3.8
R829
100k Q802
2SC3052F-T1-LF
REGULATOR
4.9 7.4
5.6
R841
C839
100
0.1
D807
UDZW-TE17-5.6B
C846
1 R846
2.2k
JW828
(GND)
5
R820
2.2k
2
6
7
MAIN
8
BOARD
(2/3)
9
(Page 22)
C836
R838 R878
0.22 18k 22k
10
C835 R837
R877
0.22
18k 22k
11
12
HCD-LX20i