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LG S75A1-D User Manual

LG S75A1-D
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2-17
ONE POINT REPAIR GUIDE
16. PORTABLE FUNCTION DOESN’T WORKING
16-1. IC200
16-1-1. Solution
Replace IC200 on MAIN board.
16-1-2. How to troubleshoot (Countermeasure)
1) Check VCC_5V of L204. If VCC_5V is abnormal, follow the stage 3-1 (IC301).
2) Check D_3.3V of L207. If D_3.3V is abnormal, follow the stage 6-1 (IC304).
3)
If VCC_5V and D_3.3V are OK, check the PTB_DET is high state when portable cable connected (R128).
If it’s Low, follow the stage 9-1 (IC100).
4) When you followed above step but It doesn’t work, Check the around parts. (Resistor, Capacitor, Bead).
If it still doesn’t work, replace the IC200.
16-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
JK200
JK200
IC200
IC200

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LG S75A1-D Specifications

General IconGeneral
BrandLG
ModelS75A1-D
CategorySpeakers
LanguageEnglish

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