Philips 20MC4304, Service Manual

Page: 117 / 316

1-11-3
Audio Block Diagram
T1006BLA
REC AMP
9
8
AU
T
O
BIAS
11
P-ON+5V
P-ON+5V
Q871
BIAS OSC
Q872
Q873 (PB=ON)
Q874 (PB=ON)
Q875
SWITCHING D-REC OFF
6
5
3
EQ AMP
SP/LP-ON
P
R
ALC
REAR
TUNER
FR
ONT
IC401 (A
UDIO SIGNAL PR
OCESS)
76
3
A-PB/REC
CL402
CN301
CN1601
CN503
4
A-COM
6
AE-H
5
FE-H
A
UDIO
HEAD A
UDIO
ERASE HEAD
A
C
HEAD ASSEMBLY
FE HEAD
(DECK ASSEMBLY)
2
FE-H
1
FE-H-GND
CL403
MAIN CB
A
Mode : SP/REC
D-REC-H
T
O
D
VD
A
UDIO
BLOCK DIA
GRAM
<D
VD
SECTION> CN601
FULL ERASE HEAD
78
80
4
LINE AMP
LPF
MUTE
10
SERIAL I/F
55
54
53
YCA-CS
YCA-SD
A
YCA-SCL
58
A-MUTE
IC301
IC802
(SW)
JK801 HEADPHONE JA
C
K
SPEAKER R-CH
CN802 CN803
SP1801
SERIAL I/F
SCL SD
A
VCR DV
D
VCR
MUTE
DV
D
7
30 21 24
32 27
14
15
FUNCTION CB
A
SPEAKER L-CH
CN1801
CN1401
SP801
SP(R)
1
SP-GND
2
SP(L)
1
SP-GND
2
44
SP(L) CL1802
CL2801
1
6
IC801
1
6
2
MUTE
2
D
V
D-A-MUTE
SP-MUTE
15
15
D
V
D-A
UDIO(R)
14
9 71
4
D
V
D-A
UDIO(L)
T
O
Hi-Fi A
UDIO
BLOCK DIA
GRAM
16
6
12
16
D
V
D-A-MUTE
A
U
DIO-OUT(R)
A
U
DIO-OUT(L)
N-A-IN N-A-OUT
JK1601
B
UFFER
Q1605
AT
T
AT
T
TP002
WF19
WF20
TP001
DVD-AUDIO-L
Q1618
WF8
WF7
PB A
UDIO SIGNAL
D
V
D A
UDIO SIGNAL
REC A
UDIO SIGNAL
D
A
T
A(A
UDIO) SIGNAL
DIGIT
AL
A-OUT (CO
XIAL)
DVD-AUDIO-R
(AMP)
(AMP)
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM
2
NO
TE FOR
WIRE CONNECT
ORS:
1.
PREFIX SYMBOL "CN" MEANS CONNECT
OR.
(CAN DISCONNECT AND RECONNECT
.)
2.
PREFIX SYMBOL "CL" MEANS
WIRE-SOLDER
HOLES OF
THE PCB
.
(WIRE IS SOLDERED DIRECTL
Y
.)
TEST POINT INFORMA
TION
:INDICA
TES A
TEST POINT
WITH A JUMPER
WIRE A
C
R
OSS A HOLE IN
THE PCB
.
:USED
T
O
INDICA
TE A
TEST POINT
WITH A COMPONENT LEAD ON FOIL SIDE.
:USED
T
O
INDICA
TE A
TEST POINT
WITH NO
TEST PIN.
:USED
T
O
INDICA
TE A
TEST POINT
WITH A
TEST PIN.
" " = SMD
SUB CBA