Question about Canon F-502 Calculator

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Some keys not working

When I press on 8 or 9, nothing happens. Plus, when I use 4, 5, 6 or 7, the result is incorrect. I tried 7 x 6 and the result was 52. Then, I tried 6/5 and it came out as 1... And also, all the keys apart from the numbers aren't working (Pi, square root, parenthesis etc.) Q.Q

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It appears your calculator is working perfectly well in octal. You should see a display indicator reading "OCT".

To switch to decimal, press 2ndF [-DEC] (-DEC is on the "+" key).

Posted on Nov 29, 2012

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 102366 Answers

SOURCE: I do not have the

You can download the manual from
http://downloads.canon.com/cpr/software/calculator/P170-DH-(USA-HWB).pdf

128000 - 10000 then press = or chain the calculation by pressing + or - and the number you want to add or subtract.

Posted on Sep 30, 2010

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The display panel on my hot tub shows a lock and none of the function keys respond when touched


didnt specify if you had a 4 8 or 10 button panel your unit is locked the only control that will work is temperature your owners manual has how to unlock it under side panel the following link is for an 8 button panel and the instructions are on page 6
http://qcaspas.com/media/pdf/Jewelp3-8Btn.pdf

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Init unable 4f .. try to uninstall printer and then reinstall still nothing has happen the same thing seems to appear on the screen .. printer is brother dcp130c please help


1. press buttons Set, Menu, Mono Start one by one, followed by up arrow key four times. this should all be done as short a time as possible, around 3 seconds.

2. enter maintenance mode 80 by pressing the up/down arrow key and set key to select numbers 8 and 0

3. press up arrow key several times to get to the Purge item

4. enter 2, 7, 8 and 3 using arrow/set keys to reset the counter

5. press Stop/Exit key to go to root of maintenance mode

6. enter 9,9 to exit maintenance mode

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1 Answer

How to calculate FV=$24,890.65 X (1.06)4 power


Enter it almost exactly as your wrote it.

Assuming you're in the AOS mode, press 2 4 8 9 0 . 6 5 * 1 . 0 6 y^x 4 =

If you're in the chain mode, press 2 4 8 9 0 . 6 5 * ( 1 . 0 6 y^x 4 ) =

"y^x" is the key just above the "9" key. "*" is the multiply key, right and above the "9" key.

Jul 20, 2011 | Texas Instruments BA II PLUS Financial...

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My TI 83 plus is not working. when i press"on" nothing happens. I changed my AAA batteries, i even change the back maxwell battery, but nothing happened


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't do it, please reply to this post and we'll go on from there.

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MFC-5860CN poor print test results, missing squares on test resu


I am not sure these have removable/replaceable printheads. I have had issues similar to what you describe. If one of the colors is missing completely, then it is likely that the head dried out due to prolonged lack of ink. If only a few squares are missing but all the colors are present, then you stand a better chance of unclogging. Cleaning 5 times is nothing. I've had instances where it took 20+ cycles to get a jet working. There is hope.
Good luck!

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1 Answer

I need to fix the calculator to float 5 decimals,apparently it's not floating.


If you want your calculator to display the results with 5 decimal digits:
  1. Open the [MODE] configuration screen.
  2. On first line highlight [NORMAL], if it is not already highlighted and press [ENTER] to validate.
  3. Use Down arrow key once to reach the line Float 0 1 2 3 4 5 6 7 8 9
  4. Use right or left arrow key to highlight the number 5 in the foregoing list (Float 0 1 2 3 4 5 6 7 8 9).
  5. Press ENTER to validate your choice
  6. Press [2nd][Quit] to exit the [MODE] configuration screen.

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1 Answer

Just say unable to clean 35. nothing is working


Hi there you can try this not know if it will work for you but it works with some brother printers


1. Press the Menu & Mono start keys. Next press the up arrow key 4 times to make the machine enter the maintenance mode.

2. Enter 8 & 0 by using the up arrow key & SET keys.

3. Press the mono start key several times until the purge count appears on the LCD.

4. Enter 2 7 8 & 3 by using the up arrow key & set keys to reset the purge count to zero

5. Press the stop/exit key to return to the initial stage of the maintenance mode.

6. Enter 9 twice by using the up arrow & set key's to exit from maintenance mode




Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

Mar 14, 2010 | Brother MFC 490cw Color Inkjet...

1 Answer

I am so confused because i can´t turn on my iPhone the screen is still black This is what i tried... 1. Pressing the Power Button (Result: Nothing happens.) 2. Pressing the Power Button and the Home...


we need more info on the phone itself, has it recently been subjected to abuse water or physical? if so maybe the battery itself is damages also try to bull the battery and leave it out for a full minute! if you can get power and just not on the screen then maybe the lcd digitizer is damaged and needs replaced! (please write back with any result or questions)

Jun 12, 2009 | Apple iPhone Smartphone

3 Answers

Insignia NS pdvd10


Unlock
Insignia NS pdvd10
It`s really works

1) On the remote control type "SETUP" button
2) Select "PREFERENCES" in the menu with
3) Validate it with the button "OK"
4) Enter the code : "224455"
5) With the direction keys type:
a) Left key : < (Nothing happens)
b) Down key : v (a menu appears on the screen
with all region)
6) Select the Region : 0 (all) with the direction keys
7) Validate it with the button "OK"
8) Finish the process by typing the "SETUP" button.

Jan 09, 2008 | Insignia NS-8PDVD

1 Answer

Not typing the correct letters


The ML-300 needs to be reset each time the Daisy Wheel is removed or replaced or if the Keyboard Switch changes position. According to Brother, if this is not done the typewriter will print incorrect characters. Try these steps: 1) Open the Top Cover. There is a lever directly behind the Daisy Wheel. Pull the lever back towards you. Remove the Daisy Wheel by pulling it up and out. 2) Verify that it is the Standard Daisy Wheel that came with your machine and not a Symbol or International Daisey Wheel. Write down the Pitch (10, 12, or dual pitch 1012) printed on the wheel. 3) Reinstall the Daisy Wheel (the plastic top ear goes to your right.) Push the lever (step 1) forward. 4) Press the ALT key plus the PITCH key and the number 1 key simultaneously. Verify the Pitch setting is the same as is printed on the Daisy Wheel. 5) Press the CODE key plus the RESET key and the letter Q key simultaneously. This will reset the typewriter mechanism and align (or time, in technical terms) the carriage mechanism. Check if the typewriter prints correctly now. If still incorrect, perform these additional steps. 6) Verify the three position Keyboard Switch (inside the top cover, on the right side, at the bottom) is in the I=Standard position. The other positions are: II=International and III=Symbol. 7) If the Keyboard Switch is in the correct position, slide it to position III and then back to I. (This will clean the switch contacts in case they are dirty and not making good electrical contact. 8) Press the CODE key plus the RESET key and the letter Q key combination again to reset the typewriter mechanism. Check if the typewriter prints correctly now. If still incorrect, the only other things I can think of is that: 1) an incorrect Daisy Wheel is installed that does not work in the ML-300. Brother sell a "B type" Daisy Wheel with two plastic ridges/raised slots below the center of the Daisy Wheel (viewed with the raised top tab on your left.) The B type are incompatible with your machine. 2) the typewriter has failed and needs repair.

Sep 28, 2007 | Brother ML-300 Typewriter

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