FUNAI 29B-250 - Page 17

Audio Block Diagram ( B )
HG454BLA
1-7-4
REC AMP
100
3
AUTO BIAS
2 1
+5V
+5V
Q401
Q406
BIAS OSC
Q402
N-A-PB
TO Hi-Fi AUDIO BLOCK
N-A-REC
Q405 (PB=ON)
Q403
5
EQ AMP
98
7
LINE AMP
REC-ON
AUDIO HD-SW CONTROL
MUTE
11
6
PB-ON
SP/LP-ON
P
TUNER IN2
IN1
R
ALC
DET
ALC
IC301 (AUDIO SIGNAL PROCESS)
1513 17
3 A-PB/REC
CN504
4 A-COM 6 AE-H 5 AE-H/FE-H
AUDIO HEAD AUDIO ERASE HEAD
AC HEAD ASSEMBLY
FE HEAD
2 FE-H 1 FE-H-GND
CN501
MAIN CBA
PB-AUDIO SIGNAL REC-AUDIO SIGNAL
Mode : SP/REC
71
A-MUTE-H
IIC-BUS SCL
IIC-BUS SDA
TO SERVO/SYSTEM CONTROL BLOCK
FULL ERASE HEAD
68 69
SERIAL
DECODER
(DECK ASSEMBLY)
12
16
INV
AT T
Comparison Chart of Models & Marks
Model Mark
29B-250 29B-750
A B