Hitachi DV-PF7E Wartungshandbuch Seite 112

N-A-PB
TO Hi-Fi AUDIO
N-A-REC
BLOCK DIGRAM
(DECK ASSEMBLY)
ACE HEAD ASSEMBLY
CL287
AUDIO A-PB/REC 4 4 A-PB/REC
HEAD
A-COM 3 3 A-COM
AE-H 1
AUDIO 1 AE-H
ERASE
AE-H/FE-H 2 2 AE-H/FE-H
HEAD
FE HEAD
FULL
2 FE-H
ERASE
1 FE-H-GND
HEAD
IC301
(AUDIO SIGNAL PROCESS)
PB-ON
5
6
+5V
Q404
CN504
Q403
BIAS
OSC
1
2
Q406
SWITCHING
D-REC-OFF
Q405
CN501
+5V
Q401
(PB=ON)
MAIN CBA
TUNER
INV
EQ
8 9
AMP
SP/LP-ON
7
AUTO
3 100
BIAS
PB-AUDIO SIGNAL REC-AUDIO SIGNAL
13 15 17
IN1
IN2
ALC
DET
R LINE
ALC MUTE
AMP
ATT
P
REC-ON
REC
AMP
SERIAL
DECODER
AUDIO HD-SW
CONTROL
16 68 69 71
A-MUTE-H
IIC-BUS SDA
IIC-BUS SCL
Mode : SP/REC
12
11
TO SERVO/SYSTEM
CONTROL BLOCK
DIAGRAM