Philips VR140/02 - Page 16

Audio Block Diagram ( N, O, P, Q )
REC
AMP
100 3
AUTO
BIAS
2
1
+5V
J982
TU701(TUNER UNIT)
J981
+5V
Q401
Q406
(SWITCHING)
BIAS
OSC
Q402
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
SW
CTL
ALC
IC301 (AUDIO SIGNAL PROCESS)
IC151 (SWITCHING)
PB/EE
PB/EE
PB/EE
PB/EE
TUNER
TU-AUDIO
AUDIO
IN2
IN1
IN1
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
1-9-15 1-9-16 HE270BLA
MAIN CBA
PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC
71
A-MUTE-H
AUDIO-SW-1
AUDIO-SW-2
IIC-BUS SCL
IIC-BUS SDA
TO SERVO/SYSTEM
CONTROL BLOCK
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
A-IN1
A-OUT1
8
6
JACK CBA
JK101
CL101
A-IN2
A-OUT2
8
6
8
6
8
6
JK102
CL102
CL151
CL152
2
21
1
5
2
4
12
14
15
11
10
9
3
13
BUFFER
Q151
BUFFER
Q152
A-IN1(R)
A-IN1(L)
2
6
1
3
A-OUT1(R)
A-OUT1(L)
A-IN2(R)
A-IN2(L)
2
6
1
3
A-OUT2(R)
A-OUT2(L)
J972
P
N,O,Q
P
N,O,Q
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