Audio Block Diagram
BLOCK DIAGRAM FOR SECTION 2 (DECK MECHANISM)
MAIN CBA
POWER SUPPLY /
AV CBA
PB-AUDIO SIGNAL
DVD AUDIO SIGNAL
REC-AUDIO SIGNAL
1-10-5
IC1401
TD900BLA
1-10-6
BIAS
OSC
Q1872
P-ON+5V
P-ON+5V
Q1871
Q1873
Q1874
Q1875
(AUDIO SIGNAL PROCESS)
N-A-IN
N-A-OUT
TP1802
NA-IN-YCA
AUDIO
HEAD
AC HEAD ASSEMBLY
A-COM
A-PB/REC
CL1402
CN1804
CN2803
AUDIO
ERASE
HEAD
AE-H
AE-H/FE-H
1
2
FE-H
FE-H-GND
FULL
ERASE
HEAD
CL1403
4
3
1
2
FE HEAD UNIT
REC
AMP
7
98
6
AUTO
BIAS
99
LINE
AMP
MUTE
96
P
R
ALC
71
12
D-REC-H
D
-R
E
C
-H
E
X
T-
H
A-MUTE
EXT-H
FROM SERVO/SYSTEM
CONTROL BLOCK
4
78
11
WF7
WF8
FROM/TO SERVO/SYSTEM
CONTROL BLOCK
3
1
EQ
AMP
100
SP/LP-ON
2
IC1802
(OUTPUT SELECT)
IC2201
(OP AMP)
JK1801
HEADPHONE
JACK
SPEAKER
R-CH
CN1802
CN1805
SP1802
FROM/TO
Hi-Fi AUDIO
BLOCK
FROM DVD
AUDIO BLOCK
<DVD SECITON>
CN601
FROM
Hi-Fi AUDIO
BLOCK
SW CTL.
Q2204
Q1803
CN2401
Q2202
JK2201
DIGITAL
A-OUT
(COXIAL)
A-OUT(L)
A-OUT(R)
A-OUT(R)
A-OUT(L)
2
1
12
13
14
15
11
10
6
2
1
7
Q2205
BUFFER
IC1801
(AUDIO AMP)
DC VOL.
5
2
12
7
6
Q2207
76
80
7 DVD-A-MUTE
1 SPDIF
4 DVD-A(R)
6 DVD-A(L)
8
8
DVD-A(R)
7
7
DVD-A(L)
11
11
JACK-MUTE
10
10
DVD-A-MUTE
5
5
JACK-OUT(R)
4
4
JACK-OUT(L)
FUNCTION CBA
SPEAKER
L-CH
CN2801
CN2805
SP2801
SP-R
1
SP-GND
2
SP-L
1
SP-GND
2
2
2
SP-L
DVD-A-MUTE
CL1802
CL2801
FROM SERVO/SYSTEM
CONTROL BLOCK
VOL-CONT
Q1212
DVD-H
JACK-MUTE
AL+5V
WF19
WF20
DATA(AUDIO) SIGNAL
Summary of Contents for EC720E
Page 2: ...EC720E T1008UJ 2004 06 22 ...
Page 22: ...1 7 4 TD900DC S 4 S 4 S 4 S 4 4 CRT Anode Cap CRT CBA Fig 3 ...
Page 93: ...2 4 8 TD951DA Fig DM16 41 42 43 L 13 44 45 P 9 Slide Fig DM17 ...
Page 97: ...3 1 3 TD900PEX S4 S1 X1 TAPE X5 X4 X2 X3 S3 S6 S7 S2 PACKING TAPE Packing ...
Page 119: ...Printed in Japan 2003 08 25 HO 6720FDD TD900UA ...