Audio Block Diagram ( R, S, T, U )
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 (SWITCHING)
5
EQ
AMP
9
8
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)
15
13
17
4 A-PB/REC
CL504
3 A-COM
1 AE-H
2 AE-H/FE-H
A-PB/REC
4
A-COM
3
AE-H
1
AE-H/FE-H
2
CL287
AUDIO
HEAD
AUDIO
ERASE
HEAD
ACE HEAD ASSEMBLY
FE HEAD
2 FE-H
1 FE-H-GND
CL501
1-9-17
1-9-18
HE490BLA
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)
" " = SMD
NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
12
16
INV
ATT
Comparison Chart of
Models & Marks
Model
Mark
VR140/02
VR140/07
VR140/39
N
O
P
VR140/58
Q
VR840/07
R
VR840/16
VR840/39
VR840/58
S
T
U
