Philips PB52.1HU LA Service Manual page 127

Circuit Diagrams and PWB Layouts
SSB (with HC Diversity): IR LED
1
IR LED
B09E
A
+5V-STANDBY
B
7
6
5
4
C 3
2
1
D
3139 283 3003.1
1
PB52.1HU LA
2 3
+3V3-STANDBY
5N51 220R FN51
5N52 220R FN52
220R
5N53 FN53
5N54 220R FN54
5N55 220R FN55
FN56
1N51
2 3
7. 127
4 5
IN50
3N51
IN51
3N52-1 1
8
100R
IN52
3N52-2
7 2
100R
IN53
3N52-3
6 3
100R
IN54
3N52-4
5 4
100R
4 5
6 7
B09E
5N56
KEYBOARD
3u3
LED1-OUT
LED2-OUT
RC
3N53 100R
IR-out-iB
LIGHT-SENSOR
6 7
1N51 C2
2N51 C4
2N52 C4
2N53 C3
2N54 C3
2N55 C3
3N51 B5
3N52-1 B5
A
3N52-2 C5
3N52-3 C5
3N52-4 C5
3N53 C6
4N01 B2
4N02 B2
5N51 C2
5N52 C2
5N53 C2
5N54 C2
5N55 C2
B 5N56 B6
6N01 C5
FN51 C3
FN52 C3
FN53 C3
FN54 C3
FN55 C3
FN56 C2
IN50 B5
IN51 B5
IN52 C5
IN53 C5
C
IN54 C5
D
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