Casio SF-4300A Manual do Utilizador descarregar pdf (Página 16)

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8. TROUBLE SHOOTING

Does display appear by pressing

Reset button?

Does it sound by key enter?

Do batteries make positive contact

with the battery springs?

Does CSB1228JT (X1) output clock

pulses?

Adjust contrast

Replace batteries

Check other function

Refer to <No/Erratic display>

Adjust contact and clean bat-

tery spring

Replace X1

Replace C11, C19, C12, C13

Is 2-pin of TC7SO2F (IC 1) 5[V]?

Adjust/Replace slide switch

Replace IC5

Is contrast adjustment OK?

Is power of batteries enough?

Are capacitor C11, C19, C12, C13 OK?

Is 1-pin of XC61AN6302PR (IC5)

5 [V]?

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Casio SF-4300A Manual do Utilizador Página 16