Casio SF-7900 Specifiche Scaricare il pdf (Pagina 22)

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TROUBLESHOOTING

Before the following solutions will be done, save data if possible.

SYMPTOM CAUSE SOLUTION

No power Battery shortage Replace batteries

Poor soldering of the power supply Resolder

circuit

Defective LSI-1 or LSI-2 Replace it

No display at all or wrong Defective TAB LSI Replace it

display

Defective heat seal Replace it

Defective LCD Replace it

No key input at all Poor soldering LSI-1 or LSI-2 Resolder

Defective LSI-1 or LSI-2 Replace it

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Casio SF-7900 Specifiche Pagina 22