TE-8500F exceptional error!

The check (table number) that you have open has too many entries. Finalise the check by paying it

If you mean turn the journal printing off, you can't. It doesn't have a journal memory because it is designed to print everything on the journal roll. That is why you buy a two station printer model. It stops staff from covering transactions and the tax office will want to see your journal rolls if they audit you.
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For those who asked about a programming manual for the Casio TE4500F, one of the users has it here:
https://the-checkout-tech.com/manuals/cashregisters/Casio_TE-3000S_and_TE-4000F_and_TE-4500F_dealers_manual.html

It uses a special Vanadium Pentoxide Lithium battery. It is available from Casio register dealers. If you are changing it yourself, make sure you have the power TURNED ON in reg mode while changing it. It has to have power to keep the memory while the battery is being changed or you lose the program.
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For those who asked, there is a Casio TE-8000f and TE-8500f programming manual here:
http://the-checkout-tech.com/manuals/cashregisters/Casio_TE-7000S_and_TE-8000F_and_TE-8500F_programming_manual.html

What this means is your machine has the Journal-off function activated

Has the machine been turned off for a while? When did it last have the memory battery replaced? -----------------------------------------------------
If anyone needs a Casio TE-8500f manual, C-tech collective have it here: http://the-checkout-tech.com/manuals/cashregisters/Casio5.php

Hi. You don't want to reset it unless you have to, as this will mean a lot of extra work for you. Better to find out why it won't let you program it.

First of all, do this:

Turn the power off at the wall
Turn the key to PROGRAM
Now keep your finger on the RECEIPT FEED button while you turn the power back on, and keep holding it down for 5 seconds.
Let go, and you should see "FFFFFFFFF" on the display
Press SUBTOTAL
Wait for print out.

On the print out, near the bottom, you should see "FC" on the left, and then a number on the right.
Tell me what that number is, and I can help you further.

If you have performed a 10000 reset then you have lost everything from the machine. The operators will need to be signed on using the 5 black buttons at the top of the keyboard marked CLK1, CLK2 etc.
you will now need to re-program the memory allocation and machine settings which are in this manual: http://the-checkout-tech.com/manuals/cashregisters/Casio_TE-7000S_and_TE-8000F_and_TE-8500F_programming_manual.html

This can be quite involved if you want to use a stock inventory system. Some models require a complete re-programming so that extra memory can be opened for stock files. Normally your dealer would set this up before you receive the machine from new. It would be best to get a dealer to set up the stock areas and memory allocation.
The machine will show you the amount of everything sold if you do a PLU report at the end of the day. This may be enough for what you need so give it a try.
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If anyone needs a Casio TE-8000f or TE-8500f manual, try here http://the-checkout-tech.com/manuals/cashregisters/Casio4.php

This indicates the actual processor in the machine has failed. Unfortunately the processor is the most important part of the whole register. If it is in fact a Casio register it can be repaired, but you will need to contact them. They are open right now actually, give them a call at 1-800-706-2534

Thanks
Tim

Ok. So if you have turned power off at wall, turned to program, held RECEIPT FEED and powered on, and you cannot get the Ls to change to Fs, then you most likely have a worn out mode lock. It is common as the 4000s get older. they are cheap to replace. It is possible that you have keyboard failure, but if you can get the paper to move with the receipt feed key then I'd say it is still mode lock.

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If anyone needs / looking for a Casio TE-4000F manual, c-tech has them here:
http://the-checkout-tech.com/manuals/cashregisters/Casio4.php