Schematic Diagram - Main Board (2/2) - Sony HCD-EC68 Service Manual

7-7.

SCHEMATIC DIAGRAM - MAIN Board (2/2) -

1 2 3
MAIN BOARD (2/2)
A
R822
100
B
R813
Q801
470k
2SC3052F-T1-LF
+3V REGULATOR
R801 8.8 2.9
C804
100
18p
3.4
R806
47k
C
R811 R812
C803 100k 47k
C807
1
1
R805
C808
470k
Q802 18p
2SC3052F-T1-LF
+5V REGULATOR
JW803
6.9 4.8
R808
22
D 5.5
21
R804
22
R809
100
R802
22
R803
2.2k
E
C802
R807 100 R815
22k 16V 10k
R816 1k
TU-ANSD TU-DO
TU-CLK
TU-DI
F
TU-CE
TUNER-R
R820 4.7k
TUNER-L
R821
4.7k
C814
4700p
G
H
I
J
K
1
1
L
MAIN
BOARD
(1/2)
2
(Page 28)
3
HCD-EC68/EC78
• See page 37 for waveforms. • See page 38 for IC Block Diagrams.
4 5 6
L801
AM FREQUENCY
COVERAGE
C819
470p
4 3
2
C820
6 1
5p
JW801 JW802
C823
220
R826 D802
10V
1k 1PS226-115
R824 R825
TP686 470
R814 4.7k
22k
TP688
D803
SV230-TB-E
C838
1000p
TP689
C806
C824
470p
1
C826
L803
1000p
FM FREQUENCY
C805 R839
COVERAGE
0.47 10
TP687
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
R830
C831
3.3k
0.47
T801
C845
AM IF
C832 0.47
0.22
4
L802
R836
FM DETECTOR
6.8k
4 3
2
6
6 1
0
R679
4.7k 0.7 Q616
2SC3052
Q616, 617
MUTING
0
R680
4.7k
0.7
Q617
2SC3052
C850
0.1 C635
0.1
(EXCEPT EC68: UK)
C640
2200p
R788
15k
14 13 12 11 10 9 8 7
IC602
INPUT SELECTOR,
ELECTRICAL VOLUME
IC602
BD3499FV-E2
IC B/D 15 16 17 18 19 20 21 22
R750
4.7k
R749
4.7k
C663
1
50V
R681 R684 R732 R752 R754
22k 22k 100 5.6k 5.6k
7 8 9 10
D801
SVC347A-TL-E
L805
R837
C834
AM TRACKING
C837
10p 100k
10p
1 6
R841 R838 R842
10k 22k 0
2 5 R847
0
D804
SV230-TB-E
R843 3 4
100k
C840
0.1
C841 C847
1000p TP690 0.1
L804
R840 R846
FM TRACKING
0 10
R844 C844 C846
2.2k 0.1 0.01
IC801
AM/FM-DET, OSC,
MIX, PLL, IF AMP
IC801
LV23003VA
IC B/D
FL801 R845
O I 0
CF
G
3
2
C848 C833 C843
0.1 0.1
220
1
10V
(EC68: UK)
R701 R702
0 0
Q624
KTC3203Y-AT
3.2 R717 68
Q622, 624 R718 68
3.8
+3.3V
REGULATOR R719 68
C704 470p
7.2
C651 C653 R722
220p 220p 100
Q622
2SC3052F-T1-LF R716 1k
(EXCEPT EC68: UK) 3.8
0
R720
6 5 4 3 2 1
22k
C669
220
10V
23 24 25 26 27 28
C662 1000p
C659 10p
C660 10p
C664
1
C667
50V
100
16V
C661
R731 R706
10
100 220
50V
29 29
11 12 13
CN801
3P
ANTENNA
FM/AM
TP683
AM
1
TP684
GND
FL803 2
TP685
O I
FM
BPF 3
G
D805 D806
CN606
1PS226-115 1PS226-115
9P
TP672
1
TP673
PB-L
2
TP674
PB-R
3
4
TP676
REC-L
5
TP677
REC-R
6
7
TP679
8
TP680
9
CN607
TP656
TU-CE 27P
27
TP657
TU-DI
26
TP658
TU-CLK
25
TP659
TU-ANSD
24
TP660
TU-DO
23
TP661
I2C-DATA
22
R660 0 TP662
21 O-SW-ON/I-TP-STATE
TP663
I2C-CLK
20
TP664
5V-ON/TP-REC-MUTE
19 5V-ON/TP-REC-MUTE
TP665
O-POWER
18
DMP-DET/USB-RST
17 I-DMP-DET/O-USB-RST
O-CD-M-MUTE
16
TP666
AMP-ON
15
O-CD-SBSY
14
O-CD-REQ
13
O-CD-CCE
12
O-CD-BUCK
11
I/O-BUS3
10
I/O-BUS2
9
I/O-BUS1
8
I/O-BUS0
7
O-CD-RST
6
TP667
I-P-MONI
5
TP668
O-CD-ON
4
TP669
3
TP670
VSTBY
2
1
C692
C679
0.1 0.01
CN608
21P
1
TP637
CD-R
2
C675
1
3
50V TP639
CD-L
4
C676
1
5
50V
O-CD-RST TP641
6
TP642
I/O-BUS0
7
I/O-BUS1 TP643
8
TP644
I/O-BUS2
9
C671 TP645
I/O-BUS3
100
10
16V TP646
O-CD-BUCK
11
TP647
O-CD-CCE
12
TP648
O-CD-REQ
13
TP649
O-CD-SBSY
14
C691 C680
0.1 2200p 15
16
TP651
D619 D620
C693 C694
17
1N4002B 1N4002B
0.1 0.1 TP652
18
C673
470
19
10V
TP654
O-CD-M-MUTE
20
DMP-DET/USB-RST
21
HCD-EC68/EC78
14 15
(EXCEPT EC68: UK)
9V
PB-Lch
PB-Rch
A-GND K
REC-Lch
REC-Rch DECK
BOARD
M-GND (Page
9V
26)
I-TP-STATE
O-TU-CE
O-TU-DI
O-TU-CLK
I-TU-ANSD
I-TU-DO
I/O-I2C-DATA
I/O-I2C-CLK
O-POWER
O-CD-M-MUTE
L
O-AMP-ON
O-CD-SBSY
PANEL
BOARD
O-CD-REQ
CN304
O-CD-CCE
(Page 33)
O-CD-BUCK
I/O-BUS3
I/O-BUS2
I/O-BUS1
I/O-BUS0
O-CD-RST
I-P-MONI
O-CD-ON
D-GND
V-STBY
M-GND
AVDD (3.3V)
R-OUT
DACGND
L-OUT
AGND
RST
BUS0
BUS1
BUS2
M
BUS3
BUCK
CD
BOARD
CCE
CN201
(Page 25)
REQ
SBSY
DGND
D-OUT
DVDD (3.3V)
VM (7V)
MGND
CD DRIVE MUTE
ZDET/LRCKIN