TPS900 repair user guided V1.0
3
3
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Open the shell
Then open the shell with the Disassemble rods like this way
2.
Base checking method
Base checking method:
Elimination method
：
Cross test method
Test every function module with Cross test method and locate where the fault in.
Temperature judgment method
：
Turn on the POS for a moment. Touch every main IC or the
circuit board with hand. Check if there is any IC or circuit board overheating.
Consolidation method
：
If you guess the faulty maybe is caused by the solder false, please
