Audio Block Diagram - Hitachi DV-PF2U Service Manual

Audio Block Diagram

NOTE: The Tuner Unit (TU701) is either type A or type B.
TYPE A
TU701
SIF 22
MOD-A 2
TYPE B
TU701
SIF 15
Q762
BUFFER
2 +
MOD-A
BUFFER
Q763
JK751
A-OUT (R)
A-OUT (L)
JK756
A-OUT (R)
REAR
A-OUT (L)
JK752
REAR
A-IN (R)
REAR
A-IN (L)
JK754
CN651
A-IN (L)
FRONT
JK755
A-IN (R)
JACK CBA
(DECK ASSEMBLY)
AC HEAD ASSEMBLY
AUDIO
HEAD
AUDIO
ERASE
HEAD
FE HEAD
FULL
ERASE
HEAD
IC751
(OUTPUT SELECT)
DVD
4 VCR
DVD
14 VCR
SW CTL
9 10 11
Q760
TO SERVO/SYSTEM
OUTPUT SELECT
CONTOL BLOCK
DIAGRAM
CN505
9
9 A-IN(L)-F
10
10 A-IN(R)-F
CN504
4 A-PB/REC
3 A-COM
1 AE-H
2 AE-H/FE-H
CN501
1 FE-H
2 FE-H-GND
MAIN CBA
3
5
13
12
IC301 IC301
(AUDIO PROCESS)
78
4
EQ
AMP
SP/LP-ON
3
Q422
BIAS
OSC
AUTO
99
BIAS
Q421
P-ON+5V
Q423 (PB=ON)
SWITCHING
D-REC OFF
Q425
P-ON+5V
Q424
(PB=ON)
PB-AUDIO SIGNAL REC-AUDIO SIGNAL
80 76
TUNER
LINE 1
LINE 2
ALC
R LINE
MUTE
AMP
1 100
P
2
REC
6 7
AMP
11 12 16
Mode : SP/REC
DVD-A(R) TO DVD AUDIO
BLOCK DIAGRAM
DVD-A(L)
<DVD SECTION>
SIF
A-IN (L)-F
A-IN (R)-F
A-OUT (R)
TO Hi-Fi AUDIO
A-IN (R)-R
BLOCK DIAGRAM
A-IN (L)-R
A-OUT (L)
N-A-OUT
N-A-IN
96
98
D-PB-H
TO SERVO/SYSTEM
A-MUTE
CONTROL BLOCK
D-REC-H
DIAGRAM
4-2-3