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Calculator does not switch on i have usad all of the remedies in the users manual supplied with the calculator including changing the batteries. do you either :- 1) repair the calculator. or 2) replace with another.

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Error code f51 flashing. What's wrong?

David: Try downloading this free user manual: According to ApplianceHelponline.: " Heater pressure switch The program is interrupted and the drain pump is operated. The display shows Technical fault F51. Call Service Department. The buzzer is activated for 2 minutes.

Background information:

Start position: One second after the program start, heater relay K1/1 is activated. This enables a check as to whether the contacts on heater pressure switch B1/13 have closed on switching steps 21/22 or 11/12.

Heater relay defective; contact open.

Replace the heater relay.

Heater relay solenoid defective.

Replace the heater relay.

Connection from heater relay to electronic module open-circuited.


1. Check plug connections.

2. Check the connection wires for continuity.

Heater pressure switch open- or short-circuited.

Replace the heater pressure switch.

Connection from heater pressure switch to electronic open-circuited.


1. Check plug connections.

2. Check the connection wires for continuity.

Foreign objects in heater pressure switch.

Replace the heater pressure switch."

May 14, 2015 | Miele Washing Machines

1 Answer

User manuels

The manual does not disclose how to change battery. This is what it says about changing it.


Jan 20, 2014 | Canon LS-100TS Calculator

1 Answer

The HP 10 S cannot handle the fraction 1200 17/32 !! Type in this fraction and press enter. The HP 10 S changes the fraction to its negative value. Appearently, the 10 digits of the fraction 1200_17/32...

Here is what the user manual says about the limitations of the calculator (and who or what does not have limitations?)
2d01c681-7192-49b8-85a3-3ed05bfa6077.pngThese limitations concern the display of results. As to the number of steps in a string of calculations, the maximum is 79, and you are warned by a change of shape of the cursor at the 73 rd step. The calculator can handle values between -1*10^(-99) and 1*10^(99).
If the calculator gives a negative result it may be due to change sign key being pressed inadvertently. Or maybe close to its limits the software shows some singular behavior.

Oct 07, 2013 | HP 10s Scientific Calculator

1 Answer

Change decimals to radical form?

hi emily, most scientific calculators have a feature to switch between deg-rad-grad. lookout for a switch DRG or so on the keypad, this feature might also be activated via a "second function" operation. check out your user manual for further in depth help.

May 23, 2012 | Casio FX-300MS Calculator

1 Answer

Printed manual for Hewlett Packard 35s scientific calculator

CalcPro sells the original HP35S User's manual for about 10 dollars. Here is the link.

Dec 31, 2011 | Office Equipment & Supplies

1 Answer

How do you change the battery in a Canon LS-100TS calculator

Here is the owner manual for your calculator as a free download.

just download it and save it to solve your current issue and for future reference. J.

Aug 17, 2010 | Canon LS-100TS Calculator

1 Answer

I was given an XL-1267 calculator, with no user manual. The ink is very faint, How do I fix this?

Unisonic Calculator Ribbon XL 1267 We supply Calculator Ribbon supplies for various calculators, as well as supplies for typewriters, cash registers, printers and dictation equipment. Can't find the calculator supplies you are looking for here? Then call us at 1-800-816-6855 or email us at We carry many of the hard to find calculator ribbons for various model printers.

Aug 16, 2010 | Unisonic Office Equipment & Supplies

1 Answer

The batteries were all just replace including the lithium and it won't work I don't have cables with it does it need a download.

Usually, you should not change all batteries at one go.

It is likely that the calculator is ON, but the screen is too light to enable user to see anything. If that is the reason, you can darken the screen.
Press the [2nd] key and release it. Press and hold the UpArrow till screen darkens enough.

You can reistall the system (if needed) by connecting it to a working TI83Plus calculator. You need the calc-to-calc cable.

If that does not work, here is what the Texas Instruments Knowledge Base says about the calculator not turning on.

Without further delay, here it is from the horse's mouth (TI Knowledge base)

I hope it helps.

For the TI-83 Plus Family, TI-84 Plus Family:

Caution: The resets described in these troubleshooting steps will cause a loss of applications, programs and data. If at all possible please create a backup using TI Connect™ first.
  1. Try a new set of AAA batteries.
  2. Adjustthe contrast by pressing and releasing the [2nd] key followed by pressing and releasing the up arrow; repeat as necessary. To adjust or lighten the display, use the down arrow.
  3. Remove one of the AAA batteries. Press and hold the [CLEAR] key. While holding [CLEAR],reinsert the AAA battery and then turn the calculator on. The calculator should display the message "RAM Cleared". Release the [CLEAR] key and then press it one more time to remove the message.
  4. Remove one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL], reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now". Follow the instructions for the TI83-family or Ti84 Plus family to reinstall the calculator operating system (see below.)
  5. Remove all of the batteries including the round lithium battery for 5 minutes.After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.

Reinstalling the OS fot the TI84Plus

How do I correct the Error Waiting...Please Install Calculator SoftwareNow message on my TI-83 Plus family or TI-84 Plus family calculator?

If an operating system (OS) update fails or is interrupted, the calculator will be in an inoperable state with the message Waiting...Please install calculator software now.The most common cause of a transfer being interrupted is updating the operating system on a calculator with low batteries. Users will need touse the TI Connectivity cable and the TI Connect to send the operating system to the calculator. Make sure to have the latest version of TI Connect installed on the computer.
In order to install the software please follow these steps:
1. Connect the TI Connectivity cable between the computer and the calculator.
2. Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader
3. Follow the on-screen directions to reinstall the calculator's OS.
If the message "Error! Press any key to turn unit off. Then turn unit back on." appears on the graphing calculator, quickly, remove one battery from the calculator and reinstall it while the transfer is taking place.

Oct 25, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

User manual

This page contains 2 manuals for FX115 calculators, and while the standard seems to be MS, each manual includes several models. This should address what you need.
If you need more help, please post back, otherwise thank you for using and rating FixYa!

Jun 04, 2008 | Casio Office Equipment & Supplies

2 Answers

Sharp EL-1801V Calculator

Change the switch to Rate Set, then input the mm.dd.yyyy then the clock/time button then hrs (military time).minutes then clock/time button.

Apr 02, 2008 | Sharp EL-2630P Calculator

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