Dell E1709W - Power Control Board Schematic

Service Manual
54
C849
1nF/50V
Signal_GND
R848 20R
R847 5.1R/open
<Doc>
R2
Power control BD LD7575
A4
56Friday , August 29, 2008
Tit le Size Document Number Rev Date: Sheet
of
Signal_GND
CN852
CON8PIN
1 8 3 4 5 6 7 2
Gate HV GND FB GND VDD NC Isense
U850 LD7575
1
45
2
83
7
6
RT
GNDOUT
COMP
HVI sense
NC
Vcc
C848
100nF/50V
R843
20K
D849 open/22V
Signal_GND
R846 100K/ 1%
C846
220pF/50V
R841 10K
C847 Open
Signal_GND
Signal_GND
R842
20K
R849 220R
Signal_GND