Large Signal Panel: Audio / Video Source Switching - Philips L01.1A Service Manual

Schematics and PWB's

Large Signal Panel: Audio / Video Source Switching

1 2
AUDIO/VIDEO SOURCE SWITCHING
3801
+6V8
+8V
220R
A
From Micronas
SC2_CTRL
A9-50
SEL-MAIN-FRNT-RR
A7-12
From MicroP
From Front/Rear I/O
LFRONT-IN
A12-31
B
*
L1-IN
A13-32
A14-32
L2-IN
A13-52
A14-52
C
RFRONT-IN 2803
A12-53
100n
R1-IN
A13-54
A14-54
D R2-IN
A13-55
A14-55
From Micronas
SC1_LOUT
A9-51
SC1_ROUT
A9-49
Stereo Scart1 Out (RF Mode always)
L1-OUT
E 4805
A14-56
R1-OUT
9801
A14-57
Mono Scart1 out
(RF Mode always)
F
QSS_AM_DEM_OUT
A5-42
CVBSFRONT-IN
G
A12-58
Y_CVBS-IN
A13-59
A14-59
1 2
L01.1A 7.
3 4
(EUROPE / AP)
EU
Scart1
RF Mode
Front In
Scart 1 in RF Mode
Scart 2 in RF Mode
R.F In RF Mode
+6V8
16 9 10
VDD
MSB LSB
LOGIC
7801
+6V8
HEF4052BT
6V
LL 7803
0V 1
BC847B
2V5
0V 5
LH H
1V8
HL L
2V4 2 3 2V4
1V8 4
HH
+6V8
0V 12
LL
6V
LH H
0V 14
7804
2V3
2V4 15
13 2V4
HL L BC847B
1V8
HH
1V7 11
VSS VEE
8 7 6
+6V8
7802-A 16
3V8 5V
Vdd
HEF4053BT
Only Europe
12 Y0 S 11
(Scart2 Out)
1V6
1V6 13 Y1 Z 14
Vss Vee E
8 7 6
7802-B 16
5V
Vdd
HEF4053BT
2 Y0 10
S
3V8
1V6
1V6 1 Y1 Z 15
Vss Vee E
8 7 6
7802-C 16
5V
Vdd
HEF4053BT
0V 5 Y0 S 9
SY_CVBS-IN
0V 3 Y1 Z 4 0V
Vss Vee E
8 7 6
* *
3 4
39
5 6 7
Output HEF Logic
MSB
Scart2 Monitor SEL-MAIN-FRNT-RR SC2_CTRL
Front Mode Front Mode 0 0
Scart1 Mode Scart1 Mode 0 1
RF Mode Scart2 Mode 1 0
1
RF Mode RF Mode 1
To Micronas/BTSC/UOC
SC1_RIN
A9-48
SC1_LIN
A9-47
Monitor Out/AV Out
2804
* L-OUT
4801
A13-60
220n * 4802
A14-60
2805
R-OUT
* 4803
A13-61
*
220n
4804
A14-61
L2-OUT
A14-62
R2-OUT
A14-63
A5-37
CL16532053_060.eps
5 6 7
2801 B4
2802 E4
2803 C2
2804 C5
2805 D5
3801 A2
3802 A2
LSB
3803 C4
3804 C4
3805 C5
3806 D4
A
3807 D4
3808 D5
3809 G2
4801 C6
4802 C6
4803 D6
4804 D6
4805 E2
4806 F1
4807 G3
4808 G3
4809 B2
7801 B3
B
7802-A E3
7802-B F3
7802-C G3
7803 C5
7804 D5
9801 E2
C
D
E
F
G
100701