Casio SF-4300A Manual de usuario descargar pdf (Pagina 18)

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Is input 2-Pin of S-81250 HG-RD

(IC3) 9[V]?

Is output 3-Pin of S-81250 HG-RD

(IC3) 5[V]?

Check Q1, Q2

Replace IC3

Are voltage of several capacitors enough?

V1: 1.5 [V]

V2: 3.0 [V]

V3: 5.5 [V]

V4: 7.0 [V]

V5: 8.5 [V]

Does TAB ASS’Y make positive

contact with L571-1 ASS’Y?

*CONTRAST: MAX

Replace TAB ASS’Y

Resolder/Replace LSI1

Resolder

Resolder/Replace LSI, IC

Check solder part of R4~R8 or

Replace C6, C7, C8, C9, C10

Check PCB

Is there any short circuit?

Are the several capacitors OK?

Replace capacitors

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Casio SF-4300A Manual de usuario Pagina 18