LG SPM2 - Page 33

3-6
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VIN
EN
VFB
SW
VBST
GND
R3
R2
Vout=0.765 x { 1 + (R2/R3)}
210mA
SoC 1V2
R826
10K/F
R827
5.76K/F
R828
0
C826
10V/0.1uF
C828
10V/0.1uF
C836
10V/0.1uF
C832
10V/0.1uF
L808
2.2uH/3.8A
C835
6.3V/22uF
C830
10V/10uF
C831
10V/10uF
C829
10V/10uF
C834
6.3V/22uF
C838
10V/0.1uF
C837
50V/0.01uF
C833
50V/0.01uF
R825
10K
123
4
56
IC802
C827
50V/0.01uF
R829
47K
C825
OPEN
L809
220ohm/2200mA
L807
220ohm/2200mA
DGND
MCS_1V2
DGND
ONE POINT REPAIR GUIDE
NO BOOTING WHEN YOU TURN THE UNIT ON, STANDBY LED DOESN’T WORK
When you turn on your set, LED doesn’t work.
1-3. IC802 MCS_1V2 (1.2 V)
1-3-1. Solution
Replace MAIN board.
1-3-2. How to troubleshoot (Countermeasure)
1) Please check MCS_1V2 of IC802 pin2.
2) If MCS_1V2 is abnormal, replace IC802.
3) If 3.3VA is OK, replace MAIN board.
1-3-3. Service hint (Any picture / Remark)


IC802
IC802
L808
L808

