It is simple to turn off the receipt printer on Sharp Cash registers.

1. Turn the programming key to OPXZ position.
2. Hit the receipt button

That is it.

Programming

To begin programming the cash register, locate the "Mode" switch in the middle right corner of the machine, below the display screen. The "Mode" switch has five settings for different functions on the cash register labeled "Void" (which cancels transactions), "Off" (which turns off the display), "Reg" (which permits transaction entries), "X/Flash" (which permits printing of sales reports) and "Z/Pgm" (the setting you'll need here, which permits resetting of sales data and programming). You can access any of the five settings with one of two mode keys that come with the cash register. However, you can only enter and withdraw the key in the regular or off position.
Once in the "Z/Pgm" setting, you can start programming keys on the cash register to represent different departments in your business. Then you can assign preset prices to different department keys for frequently purchased items to speed up cash register transactions. You can also assign price look-up codes to each department for checking prices. Price look-up codes 1 through 10 are preset to "Department Key 1." The rest can be assigned by pressing the price look-up code, the price and the department key.
For tax purposes, you can program the cash register to calculate two separate tax tables. You can also use the percent key to program a discount or premium setting.
For sales and other transactions, you can choose either a journal or receipt format for printing, and you can program consecutive receipt numbers on every transaction or report with the date and time.
Finally, you can program a secret code to limit access to transaction reports, resetting of sales information, and all other sensitive data.

All of the programming can be accomplished by using the keys on the cash register to set information for taxes, printing formats, consecutive receipts and secret codes.

Download manuals from liked page:
Sharp Cash Registers Manuals Download

Instructions
1
Remove the cover on the part of the register covering the paper tape. Cut the paper as close as possible to the reel, then feed the remaining loose paper sticking out of the receipt slot.

2
Lift the platen arm or any catch holding the paper. Remove the entire reel if necessary with the old roll still attached to it. Slide the old roll of paper off the reel and save it for scratch paper or throw it away.

3
Find the edge of the new paper and remove the tape holding it. Put the new roll of paper on the reel. Replace the reel in the register.

4
Close the platen arm or any catch that holds the tape down. Pull the edge of the paper up and through the receipt slot slightly.

5
Press the button on the register to feed the paper and make sure the new tape roll works.

6
Close the cover of the register.