Schematic Diagram - Main Section (2/3) - Sony HCD-EC68P Service Manual

HCD-EC68P/EC78P
6-7.

SCHEMATIC DIAGRAM - MAIN Section (2/3) -

1
MAIN BOARD (2/3)
A
R822
100
B
R801
100
R806
47k
C
C803
R805
470k
D
E
TU-ANSD
F
G
H
I
J
K
1
1
L
MAIN
BOARD
(1/3)
2
(Page
3
31)
HCD-EC68P/EC78P
• See page 39 for waveforms. • See page 42 for IC Block Diagrams.
2 3 4 5
JW801 JW802
C823
220
10V
R824 R825
R814 TP686 470 4.7k
22k
R813
Q801
470k
2SC3052F-T1-LF
+3V REGULATOR
8.8 2.9
C804
18p
C806
C824
470p
3.4 1
C805
0.47
R811 R812
100k 47k
C807
1
1
C808
18p
Q802
2SC3052F-T1-LF
+5V REGULATOR
JW803
6.9 4.8
TP687
R808
22
5.5
21
R804
22
19 20 21 22 23 24 25 26 27 28 29
R809
R802 100
22
R803
2.2k
18 17 16 15 14 13 12 11 10 9 8
C802
R807 100 R815
22k 16V 10k
R816 1k
TU-DO
TU-CLK
R830
TU-DI
C831
3.3k
0.47
TU-CE
C832 0.47
TUNER-R
L802
R820 4.7k
FM DETECTOR
TUNER-L
R821
4.7k
4 3
2
C814
∗
6 1
∗ C814, 815
4700p (EC68P: AUS/EC78P: UK)
0.01 (EC68P: US/EC78P: US, CND)
C850
0.1
C640
2200p
R788
15k
IC602
INPUT SELECTOR,
ELECTRICAL VOLUME
IC602
BD3499FV-E2
IC B/D
R681
22k
6 7 8
L801
AM FREQUENCY
COVERAGE
D801
C819
SVC347A-TL-E
470p
4 3
2
C820 C834 R837
6 1 C837
5p 10p 100k
10p
R841 R838 R842
R826 D802 10k 22k 0
1k
1PS226-115
D804
SV230-TB-E
R843
100k
TP688 C840
0.1
D803
SV230-TB-E
C838
1000p
TP689
C841 C847
1000p 0.1
TP690
C826
L803 L804
1000p
R840 R846
FM FREQUENCY
R839 FM TRACKING
0 10
COVERAGE
10
R844 C844 C846
2.2k
0.1 0.01
30 31 32 33 34 35 36
IC801
AM/FM DET, OSC,
MIX, PLL, IF AMP
IC801
LV23003VA
7 6 5 4 3 2 1 IC B/D
FL801
R845
0
O I
CF
G
T801
C845
AM IF
0.22
4 3
R836
6.8k
2
C843
C848 C833
0.1 220 0.1
6 1
10V
R741 1k
R742 1k
Q622, 624
REGULATOR
14 13 12 11 10 9 8 7 6 5 4 3 2 1
15 16 17 18 19 20 21 22 23 24 25 26 27 28
C662 1000p
R750
4.7k C659 10p
R749
C660 10p
4.7k
C663 C664
1 1
C667
50V 50V
100
16V
R684 R732 R752 R754 R731 R706 C661
22k 100 5.6k 5.6k 100 220 10
50V
32 32
9 10 11 12
L805
AM TRACKING
1 6
2 5 R847
0
3 4
FL803
O I
BPF
G
D805
1PS226-115
TU-CE
TU-DI
TU-CLK
TU-ANSD
TU-DO
I2C-DATA
I2C-CLK
5V-ON/TP-REC-MUTE
O-POWER
DMP-DET/USB-RST
O-CD-M-MUTE
AMP-ON
O-CD-SBSY
O-CD-REQ
O-CD-CCE
O-CD-BUCK
I/O-BUS3
I/O-BUS2
I/O-BUS1
I/O-BUS0
O-CD-RST
I-P-MONI
O-CD-ON
VSTBY
DMP-TXD
DMP-5V-DET
DMP-RXD
DMP-L
DMP-R
C679
0.1
Q624
KTC3203Y-AT
R717 68
3.2 CD-R
R718 68 C675
3.8
1
+3.3V
50V
R719 68
CD-L
C704 470p C676
7.2
1
50V
O-CD-RST
R722
Q622 100 I/O-BUS0
2SC3052F-T1-LF R716 1k
I/O-BUS1
3.8 I/O-BUS2
C671
0 I/O-BUS3
100
16V
O-CD-BUCK
R720 O-CD-CCE
22k
O-CD-REQ
C669
220
O-CD-SBSY
10V
C691
0.1
D620
C693
1N4002B
0.1
C673
470
D619
10V
1N4002B
O-CD-M-MUTE
DMP-DET/USB-RST
13 14 15
CN801
3P
ANTENNA
FM/AM
TP683
1 AM
TP684
GND
2
TP685
FM
3
D806
1PS226-115
CN803
TP656
31P
31 O-TU-CE
TP657
30 O-TU-DI
TP658
29 O-TU-CLK
TP659
28 I-TU-ANSD
TP660
27 I-TU-DO
TP661
26 I/O-I2C-DATA
R660 0 TP662
25 O-SW-ON/I-TP-STATE
TP663
24 I/O-I2C-CLK
TP664
23 5V-ON/TP-REC-MUTE
TP665
22 O-POWER
21 I-DMP-DET/O-USB-RST
20 O-CD-M-MUTE
TP666 L
19
O-AMP-ON
18 O-CD-SBSY
PANEL
17 BOARD
O-CD-REQ
CN301
16 O-CD-CCE (Page 37)
15 O-CD-BUCK
14 I/O-BUS3
13 I/O-BUS2
12 I/O-BUS1
11 I/O-BUS0
10 O-CD-RST
TP667
9 I-P-MONI
TP668
8 O-CD-ON
TP669
7 D-GND
TP670
6 V-STBY
5 M-GND
4
I-DMP-TXD
3 I-DMP-5V-DET
2
O-DMP-RXD
1 NC
C692
0.01
CN608
21P
1 AVDD (3.3V)
TP637
R-OUT
2
3 DACGND
TP639
L-OUT
4
5 AGND
TP641
RST
6
TP642
BUS0
7
TP643
BUS1
8
TP644
BUS2
9 M
TP645
BUS3
10
TP646
BUCK
11 CD
TP647
BOARD
CCE
12
CN201
TP648
(Page 29)
REQ
13
TP649
SBSY
14
C680
2200p DGND
15
D-OUT
16
TP651
C694 DVDD (3.3V)
17
0.1 TP652
VM (7V)
18
MGND
19
TP654
20 CD DRIVE MUTE
ZDET/LRCKIN
21
5
2
4
MAIN
BOARD
(3/3)
(Page 33)