Audio Block Diagram - FUNAI 25A-664 Service Manual

Audio Block Diagram

N-A-PB
TO Hi-Fi
N-A-REC
AUDIO BLOCK
(DECK ASSEMBLY)
ACE HEAD ASSEMBLY
CL287
A-PB/REC 4
AUDIO
HEAD
A-COM 3
AUDIO AE-H 1
ERASE
AE-H/FE-H 2
HEAD
FE HEAD
FULL
ERASE
HEAD
+5V
Q401
CL504
4 A-PB/REC
Q402
3 A-COM
BIAS
1 AE-H
OSC
2 AE-H/FE-H
Q406
Q404 (PB=ON)
SWITCHING
D-REC-OFF
Q403
CL501
2 FE-H
Q405
1 FE-H-GND
(PB=ON)
1-7-5
MAIN CBA
IC301
(AUDIO SIGNAL PROCESS)
PB-ON
5 EQ
8 9
AMP
6
SP/LP-ON
7
1 AUTO
3 100
BIAS
2
+5V
PB-AUDIO SIGNAL REC-AUDIO SIGNAL
13 15 17
IN1
TUNER IN2
ALC
DET
INV
R LINE
ALC MUTE
AMP
ATT
P
REC-ON
REC
AMP
SERIAL
DECODER
AUDIO HD-SW
CONTROL
16 68 69 71
1-7-6
Mode : SP/REC
12
11
A-MUTE-H
IIC BUS-SDA TO SERVO/SYSTEM
CONTROL BLOCK
IIC BUS-SCL
HC4S4BLA