Philips 14PV225 - Audio Block Diagram

Audio Block Diagram
REC
AMP
100 3
AUTO
BIAS
2
1
+5V
+5V
Q854
Q856
BIAS
OSC
Q855
Q853(PB=ON)
Q852(PB=ON)
Q851
SWITCHING
D-REC-OFF
5
EQ
AMP
98
7
LINE
AMP
REC-ON
TP007
AUDIO HD-SW
CONTROL
MUTE
11
6
PB-ON
SW CTL
SP/LP-ON
P
R
ALC
DET
ALC
IC401
(AUDIO SIGNAL PROCESS)
IC701 (SW)
13
17
3 A-PB/REC
CL402
4 A-COM
6 AE-H
5 FE-H
AUDIO
HEAD
AUDIO
ERASE
HEAD
ACE HEAD ASSEMBLY
FE HEAD
1 FE-H
2 FE-H-GND
CL403
1-7-19 1-7-20 T6410BLA
MAIN CBA
PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC
71
A-MUTE-H
SCL
SDA
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
FROM 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
IC301
7
1
IC151 (AMP)
(VIDEO/AUDIO/CHROMA/DEFLECTION/IF)
SP
2
SP-GND 1
JK151
HEADPHONE JACK
SP151
SPEAKER
CN804
CL801
SP-MUTE
(FROM PIN 44 OF IC201)
OUTPUT
AMP
50
52
53
54
MUTE
5
1
2
15
5
3
4
13
12
14
21
2
1
AUDIO OUT
TU001
JK702
A-IN
JK703
A-IN
A-OUT
Q701
1011 9
SCART-H
EXT-L
SCART-MUTE
TUNER
TUNER1
LINE
LINE
A-OUT
ATT
AUDIO
MUTE
WF7
WF9
WF8