LG SJ7 - Secondary Unit

3-14
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Only for training and service purposes.
ONE POINT REPAIR GUIDE
2. SECONDARY UNIT
1. NO CHARGING BATTERY
Battery is not charged
1-1. Solution
Check IC902 and replace MAIN board.
1-2. How to troubleshoot (Countermeasure)
1) Check pin2, 3 of IC902.
2) Check pin12 of IC902. (It should be 3.3 V.)
3) It doesn’t work, IC902 has damaged. Replace MAIN board.
1-3. Service hint (Any picture / Remark)
< MAIN board bottom view >
IC902
IC902
IC902
IC902
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