Question about Sharp EL-2630P Calculator

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Print colors are reversed--negatives in black; positives in red

How do we fix this?  How did it happen in the first place?

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Re: print colors are reversed--negatives in black;...

Does it come with an ink ribbon? If so, it's in upside down.

Posted on Jan 07, 2008

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Only prints in red

may have print ribbon installed upside down. what happens if you try printing a negative number? if that number prints in black, try turning ink ribbon over

Jan 02, 2014 | Canon MP49D Calculator

1 Answer

The ribbon will only print red ink

While in the D position or PD position, N Count
is OFF. In the N Count N position every
Plus, Minus, Equals Plus, Equals Minus,
Memory Plus or Memory Minus key depression
is counted. The Accumulator and its N Count
or the GT N Count can be printed by
depression of the Subtotal or Total key. When
either Memory Subtotal or Memory Total is
depressed, Memory N Count will print. N Count
is always printed in red, left justified. If the
Equals key is depressed immediately after the
Subtotal Total, Memory Subtotal, or Memory
Total the average of the entries is printed.
When the N Count prints on the 7150, an audit
symbol will print to the left of the N Count.
The audit NA will identify the Accumulator
register N Count, NG will identify the GT
register N Count and NM will identify the
Memory N Count.

Apr 23, 2012 | Monroe 7130 Calculator

1 Answer

Which button do you push to enter negative numbers?

On the TI30X IIB the negative symbol is located one button to the right of the decimal place, just below the number 3.
To enter a negative number press the negative symbol "(-)" whose location was described above and then enter the positive form of the number. You will see the negative symbol on the screen indicating that the number is negative.

Mar 16, 2011 | Texas Instruments TI30X IIB Scientific...

1 Answer

Okay... my Ti-89 isn't squaring numbers right. I put in -2^2 and I get -4, or I put -3^2 and I get -9 and so forth. I thought and still believe that when you square any number, despite whether it's...

You are not using the right syntax. It has to do with priority of operations. raising a number to a power has priority over the negation sign (the change sign key). Th operations you are performing are treated as follows.
1. The square of 2 is calculated first (4),
2. then the negation (change sign) is performed, giving -4.

To get what you intend, namely the square of a negative number, you should enter the calculation as follows.
Since the parentheses have priority over everything else, the negation of 2 is calculated first, giving -2, then the power is performed next, and the result should be 4

If you need convincing, here is a screen capture.


Hope it helps.

Oct 26, 2009 | Texas Instruments TI-89 Calculator

1 Answer


Did you buy a red/black inker or all black?

Dec 31, 2008 | Calculators

2 Answers

Monroe Calculator 7130 - won't print red for negative

turn it off & back on & that should fix it. the ribbon lift needs to reset.

Nov 18, 2008 | Monroe 7130 Calculator

2 Answers

Canon p170-dh

if you calculkator does not print at all try to move a switch to p or print, and you have a ink roller on the printer

Dec 08, 2007 | Canon P170-DH Calculator

2 Answers

PRINT COLOR appears that the ribbon is on upside down..The black has to be on the top and the red on the bottom. Just switch spools and turn the ribbon over..either that or there is a spring off the ribbon platform solenoid on the right side of the printer just below where the ribbon comes off the spool. If the spring is off or broken the ribbon platform will rise too high and print in red. Remotely the solenoid (little blue thing) could be bad or out of adjustment.
Hope this helps..this is usually all it can be.

Nov 27, 2007 | Sharp EL-1750PIII Calculator

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