DV-NC100H. Cover, Contents, , Laser beam safety precautions, Important safeguards and precautions, Standard notes for servicing, Preparation for servicing, Operating controls and functions, Cabinet disassembly instructions, Electrical adjustment instructions, Firmware renewal mode, Troubleshooting, Block diagrams, Function indicator symbols, Main Schematic diagram 1 9. - Sharp DVD Service Manual (repair manual). Page 39

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1-11-3
Audio Block Diagram
H9741BLA
REC
AMP
100
3
AU
T
O
BIAS
2
1
+5V
+5V
Q404
Q406
BIAS
OSC
Q403
N-A-PB
T
O
 Hi-Fi A
UDIO 
BLOCK DIGRAM
N-A-REC
Q401 
(PB=ON)
Q405
SWITCHING
D-REC-OFF
5
EQ
AMP
9
8
7
LINE
AMP
REC-ON
A
U
DIO HD-SW
CONTR
O
L
MUTE
11
6
PB-ON
SP/LP-ON
P
TUNER
IN2
IN1
R
ALC
DET
ALC
IC301
(A
UDIO SIGNAL PR
OCESS)
15
13
17
4
A-PB/REC
CN504
3
A-COM
1
AE-H
2
AE-H/FE-H
AU
D
IO
HEAD
AU
D
IO
ERASE
HEAD
A
C
 HEAD ASSEMBL
Y 
FE HEAD 
2
FE-H
1
FE-H-GND
CN501
MAIN CB
A
PB-AUDIO SIGNAL
REC-AUDIO SIGNAL
Mode : SP/REC
71
A-MUTE-H
IIC-B
US SCL
IIC-B
US SD
A
T
O
 SER
V
O/SYSTEM 
CONTR
OL BLOCK 
DIA
GRAM
FULL
ERASE
HEAD
68
69
SERIAL
DECODER
 (DECK ASSEMBLY)
12
16
INV
AT
T

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