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LG SJ8 - Page 64

LG SJ8
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4-5
Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
WIC703
WIC703
ONE POINT REPAIR GUIDE
POWER ON ERROR
Fundamental power check points.
1-3. 3.3 VA
1) Check 3.3 VA at pin1 of WIC703.
2) Check 3.3V_PWM at pin6 of WIC703.
3) 1), 2) is NG Replace WIC703.
If you can’t check PVDD voltage, then replace the PCB board.
< Woofer SMPS & AMP board bottom view >

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