Where is the constant key on the key board? - Canon P170-DH Calculator

You didn't give a make or model but if this is an IBM Wheelwriter you may have dislodged one of the cables from the key board.

DickyO

The beeping sound is a warning sound that lets the driver know that a door is open and he shouldn't drive off. It is normal and nothing to worry about. Good Luck. george

there may be a stuck key on the control board if you can not determine what key is stuck you will have to replace the conttrol board

we have to make sure if this is an issue with the key board or if it is with the software, it is very simple, all you need to do is, just plug an external key board (USB type) and try using it, if you do not have any issue with the external key board the you just need to replace the key board of your laptop.
If you are having the same issue or something similar to the current issue, it is evident that you have some kind of virus in the computer. have your system scanned with an antivirus software.

Hope this helps.

How to do constant multiplication or division on the Canon P170-DH calculator

This process actually requires fewer keystrokes than other calculators. Basically, just do the first problem
and then do the next items with just the next number and the EQUAL key. For example,

*** Constant Multiplication ***
2 (multiply key)
10 (= key)
(The answer 20 shows on the screen. Note, the 2 is still stored as a constant without doing anything, just continue)
4 = (shows the answer 8 on the screen)
20 = (shows the answer 40 on the screen)
100 = (shows the answer 200 on the screen)

*** Constant Division ***
10 (divided by key)
2 =
(shows the answer 5 on the screen, the 2 is still stored as a constant without doing anything, just continue)
100 = (shows the answer 50 on the screen)
500 = (shows the answer 250 on the screen)
4 = (shows the answer 2 on the screen)

Computers beeps are caused by the power supply, system board, graphics/video card or keyboard.
Reboot your system with out the keyboard if it no longer beeps your problem is a couple of stuck keys on the keyboard.
If the beeping continues remove your graphics card and reboot your system.
If your pc still beeps the it is either your power supply or the system board.

this fault code means there is a stuck key on the control board.you need to disassemble the display panel and free up the stuck key if this does not work then the display panel and or control board need to be replaced

How to do constant multiplication or division on the Canon P170-DH calculator

This process actually requires fewer keystrokes than most other calculators. Basically, just do the first problem
and then do the next items with just the next number and the EQUAL key. For example,

*** Constant Multiplication ***
2 (multiply key)
10 (= key)
(The answer 20 shows on the screen. Note, the 2 is still stored as a constant without doing anything, just continue)
4 = (shows the answer 8 on the screen)
20 = (shows the answer 40 on the screen)
100 = (shows the answer 200 on the screen)

*** Constant Division ***
10 (divided by key)
2 =
(shows the answer 5 on the screen, the 2 is still stored as a constant without doing anything, just continue)
100 = (shows the answer 50 on the screen)
500 = (shows the answer 250 on the screen)
4 = (shows the answer 2 on the screen)

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Also note! There is no K visible on the screen to indicate a constant is set.

Appu, the F0 error for this built in means there is a shorted or stuck off key. Sometimes this can be resolved by removing the keypad ribbon cable from the board and cleaning the ends with an eraser. If that doesn't work, you want to find out whether its the board or keypad by ohming the ribbon cable, 3 to 4, probes on the conductor side...should read 125 to 1750 ohms while pressing the off key. Catriver..post back.