Philips PB52.1HU LA Service Manual page 99

Circuit Diagrams and PWB Layouts
SSB (with HC Diversity): DC / DC
2U80 B2 2U82 B5 2U86 B7 2U88 C8 3U82 B3
2U81 B4 2U85 B7 2U87 C7 3U81 B2 3U83 B4
1 2
DC / DC
B01B
A
+5V-STANDBY
B
STANDBY
ON-MODE
C
ON-MODE
D
3139 283 3003.1
1 2
PB52.1HU LA 7.
3U85 B6 3U87 D7 6U81 B4 7U81 B3
3U86 C7 4U80 B2 7U80 C2 7U82-1 B4
3 4
+12V
3U83
IU80
2
220K
4U80
STANDBYn
6U81
7U81
BZX384-C8V2
PDTC114EU
7U80
PDTC114EU
7U84
PDTC114EU
3 4
99
7U84 C4 7U86 D6 FU80 B5 FU86 A8 IU85 C6
7U85 A7 7U87 C7 FU85 C8 IU80 B4 IU86 D7
5 6
+5V-STANDBY
7U82-1
SI4936ADY
FU80
+5V-ON
IU85
3 1
7U86
TS431AILT
5 2
5 6
7 8
7U85
LD1117S33C
FU86
2
+3V3-STANDBY
3 4
IN OUT
COM
3
1 7U87
BC817-25W
FU85
2
+1V2-STANDBY
2U87
1n0
3U87
IU86
4
1K0
7 8
9
B01B
A
B
C
D
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