Audio Block Diagram - Hitachi DV-PF73U Service Manual

6-3

Audio Block Diagram

TU701
SIF 15
MOD-A 2
JK751
A-OUT (R)
A-OUT (L)
JK756
A-OUT (R)
REAR
A-OUT (L)
JK752
A-IN (R)
A-IN (L)
JK754
A-IN (L)-F
FRONT
JK755
A-IN (R)-F
(DECK ASSEMBLY)
AC HEAD ASSEMBLY
AUDIO
HEAD
AUDIO
ERASE
HEAD
FE HEAD
FULL
ERASE
HEAD
26
IC751
TP753
(OUTPUT SELECT)
A-OUT (R)
DVD
5
4 VCR
3
DVD
12
14
VCR
13
TP754
SW CTL
A-OUT (L)
9 10 11
Q760
FROM SERVO/SYSTEM
OUTPUT-SELECT
CONTOL BLOCK
DIAGRAM
CL504
4 A-PB/REC
Q422
3 A-COM
BIAS
1 AE-H
OSC
2 AE-H/FE-H
Q423 (PB=ON)
Q425
CL501
1 AE-H/FE-H
Q424
2 FE-H-GND
(PB=ON)
PB-AUDIO SIGNAL
MAIN CBA
IC301
(AUDIO PROCESS) 80 76
TUNER
REAR
FRONT
78
4 1
EQ
AMP
2
SP/LP-ON
3
AUTO
99 6
BIAS
Q421
P-ON+5V
SWITCHING
D-REC OFF
P-ON+5V
REC-AUDIO SIGNAL
DVD AUDIO SIGNAL
DVD-A(R)
DVD-A(L)
MOD-A
SIF
A-IN (L)-F
A-IN (R)-F
A-OUT (R)
A-IN (R)
A-IN (L)
A-OUT (L)
N-A-OUT
N-A-IN
ALC
R LINE
MUTE 96
AMP
100
P
REC
7 98
AMP
11 12 16
D-PB-L
A-MUTE-H
D-REC-H
Mode : SP/REC
FROM DVD VIDEO/
AUDIO BLOCK
DIAGRAM
<DVD SECTION>
FROM/TO Hi-Fi AUDIO
BLOCK DIAGRAM
FROM
SERVO/SYSTEM
CONTROL BLOCK
DIAGRAM