My Sharp COMPET QS-2760H stays at 0. I can't enter any numbers,,, Any ideas?

I wonder if some dirt or liquid got spilt on the keys? I would try removing the case and cleaning at the bottom of the keys. What do you have to loose. Of course, if it is new, I would return it before I attempt a repair.

Good luck.

Paul

I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.

I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.

I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.

You can download the manual from the manufacturer's web site at
http://files.sharpusa.com/Downloads/ForHome/HomeOffice/Calculators/Manuals/cal_man_QS_1760.pdf


http://files.sharpusa.com/Downloads/ForHome/HomeOffice/
Calculators/Manuals/cal_man_QS_1760.pdf

You can select the A (K . A) and then the # of decimal places (F 6 3 2 1 0) you want. So if you want to enter 1234 & it calculates 12.34, this will work.

Hello,

Try this procedure, it should help fix the problem,
Turn Printer off. While holding down Enter and Menu keys, power the printer on. You should see PCU Diag Mode displayed. Hit Menu key 6 times till Counter Set is displayed. Hit Enter key Dev xxxxx displayed, left 3 numbers are blinking. Hit (down triangle symbol) till numbers are 000. Hit Menu key, right 2 numbers are blinking. Hit (down triangle symbol) till numbers are 00. Hit Menu key. Drm xxxxx displayed, left 3 numbers are blinking Repeat steps 7-10. Dev tm xxxxx displayed. Repeat steps 7-10. Drm xxxxx displayed. Repeat steps 7-10. Life xxx displayed. Life should be set to 005. Hit Menu key. TNL xxx displayed. TNL level should be between 90-110, if you have problems, try changing TNL. Hit Enter key Counter Set is displayed. Hold down Form Feed key and insert blank paper into manual feed slot. You should get a beep confirming reset. Power printer down and back up, you are done.

unlock code nokia 2760

GT •RATE SET GRAND TOTAL / RATE SETTING MODE SELECTOR:

“GT”: Grand Total
“•”: Neutral
“RATE SET”: To set the date, time, and tax rate, set this switch at the “RATE SET” position.

Date:
• Enter in the order of month, day and year, then press to complete the entry.
• Use to separate month, day, and year.
• When is pressed, the number entered is evaluated and displayed as “date” if the
value is within the following range; “Error” is displayed otherwise, and the previously set
date is restored.
Month: 1 - 12; day: 1 - 31; Year: 2000 - 2099 (in 4 digits) or 00 - 99 (in 2 digits)
Time:
• Enter in the order of hour, minutes, then press to complete the entry.
(There is no entry available for the seconds value. The clock starts at zero second.)
• If the hour/minute digit is less than 10, it is not necessary to enter the first digit “0”.
• Use to separate hour and minute values.
• When is pressed, the number entered is evaluated and displayed as “time” if the
value is within the following range; “Error” is displayed otherwise, and the previously set
time is restored.
Hour: 0 - 23 (24-hour system for the hour entry), Minute: 0 - 59

Try hitting Enter after plugging in the numbers. That should make the numbers stay.