Samsung HLR4677WX/XAA Service Manual page 57

Schematic Diagrams
7-1-2 DCDC
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BD156 BD184
USA O X
KOR X O
7-2
IC139
MP1583DN
1 8
BS SS
2 7
IN EN
3 6
SW COMP
4 5
GND FB
DCDC Converter for Power of ATI-CPU
USA : STD power
KOR : B+ power
IC140
R1122
3Kohm MP1583DN
1/10W
1 8
BS SS
2 7
IN EN
3 6
SW COMP
4 5
GND FB
DCDC Converter for Power of ATI-CPU
USA/KOR Common B+ power
R803
47Kohm
1/10W
IC142
R807
MP1583DN
1.5K
1 8
BS SS 1/16W
2 7
IN EN
3 6
SW COMP
4 5
GND FB
DCDC Converter for Power of Channel Board
Only for USA
Samsung Electronics