Main Smps Board - Samsung PS42E7SX Service Manual

9-5 Main SMPS Board

① CN800 : AC IN (90 ~ 264V)
②
CN804-1(Main SMPS)
↔
CN102(Main Board)
Pin No.
Pin No. Signal
1 5.3V
2 RTN
3 N/C
4 N/C
5 RTN
6 RTN
7 12V
8 PS_ON
9 RTN
10 STBY
11 FAN_ON
12 FAN_D
※ CN811, CN804-2 and CN805, CN806, CN807, CN808 are not used.
Samsung Electronics
③
CN803(Main SMPS) CN810(Main SMPS)
↔
CN101(Main Board)
CN2013(Logic Board)
Signal
Pin No.
1 6.5V
1
2 RTN
2
3 12V
3
4 RTN
4
5 18Vamp
5
6 18Vamp
6
7 RTN_amp
7
8 RTN_amp
8
9 Vt
9
10 RTN
10
④ ⑤
CN809(Main SMPS)
↔ ↔
CN3(DC-DC SMPS)
Signal Pin No.
STBY 1
VS_ON 2
N/C 3
PS_ON 4
RTN 5
5.3V 6
RTN 7
RTN 8
5.3V 9
5.3V 10
11
12
PCB Diagram
Signal
5.3V
Vg
RTN
RTN
RTN
RTN
RTN
Va
Va
N/C
Vs
Vs
9-5