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How to open a Casio FX-4000P?
08-08-2021, 03:51 PM
Post: #7
RE: How to open a Casio FX-4000P?
(08-08-2021 12:30 PM)johanw Wrote:  I didn't even have to tune up the contrast (is that even possible on a 4000? I didn't see any keys for that) as was the case with my FX-8000G, when I replaced the batteries in that one my heart sank when I didn't see anything when I switched it on, until I got the idea to push up the contrast. That worked.

I often found that replacing the batteries left all kinds of corrupt data in the 6000/6500/7000/80000/8500G series, including barely visible contrast. On those machines at least it's always a good idea to press the Reset button on the back, and more often than not, that rectifies the poor contrast.

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Messages In This Thread
How to open a Casio FX-4000P? - johanw - 08-07-2021, 08:51 PM
RE: How to open a Casio FX-4000P? - johanw - 08-08-2021, 12:30 PM
RE: How to open a Casio FX-4000P? - johanw - 08-08-2021, 01:05 PM
RE: How to open a Casio FX-4000P? - grsbanks - 08-08-2021 03:51 PM



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