Text preview for : F.pdf part of Dreambox DM500 Service diagram
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C719
LNB 13/18V 102
D70
1N4007 DO-41
J1
+3.3V +3.3V
1 32
D R704 D
2 31
U15-62
C720 C705 C704
3 220 R612 R611
U15-63
U15-94
102 L704/L705 220uF/16V 104
331M-R 27 U15-98 102 102
U70-5 4 26 U15-113
6 25
C707 C706
C703 5 24
33uF/16V 104
102 23
R703 RN70 220
7 220 4 C715
L702/L703 5
PB2012-121 8 22 U15-150
3 6
+1.8V 9 21 U15-147
2 7
C716 C717 10 20 U15-138
1 8
11 19 U15-140
+12V C718 102 104 12
220uF/16V 13
1 8
14 18 U15-124
+3.3V 2 7
28 17 U15-129
L710 3 6
PB2012-121 29 16 U15-131
F70 C708 C710 4 5
30 15 U15-123
1812 050 104 104
C711 C709 TUNER RN71 220
33uF/16V 680uF/6.3V
C C
R705
100k/0603 R712
150
Q72
FDN358 (SOT-23)
L714
C726
334
D71 INDOUCTOR
L711 L713
6R8M-R MBRS130LT3(1BL3) PB2012-121
R707 LNB 13/18V
L712
100k/0603
331M-R
C724
C721 C722 C* C725 R708
104
47uF/50V 225 100u/25v 475 120k/0603 C723 C724
101 104 R713
220/0603
B B
R706
LNB POW CTRL
100k/0603 Q70
Q71
BC817 6C BC817 6C
+5V R715
472
22kHz output
U70 R709 R711
1 5 95.3k 1% 333
SW Vin
2
GND
3 4 D72
FB SHDN- R714
LT1930 22/0603
R710 C727
A 13/18V CTRL A
333 105
Title
Size Number Revision
B
Date: 18-Jul-2006 Sheet of
File: E:\li\MyDesign.ddb Drawn By:
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