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After a cash transaction, the cash drawer won’t pop open. What can I do?

This issue is likely an OPOS communication issue between the printer and RMH. To resolve this issue, there are four main stepsThe cash drawer is controlled by the receipt printer. To open the drawer, RMH POS sends an OPOS command to the receipt printer which sends a signal to the cash drawer. The Epson receipt printers are network devices so they must have the proper IP configuration. Follow these steps to troubleshoot:

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Here are the details in each step:

Note the transaction number and exit POS.

Click OK for the error message, and complete the transaction.

Take note of the transaction number, located under the bottom of the barcode on the receipt.

Once the transaction number is noted, press the escape key to exit out of the journal. Press escape again to close POS, then click yes for the confirmation message.

Check the printer’s hardware connections.

Turn off the printer by toggling the black power switch on the front.

Check the cables at the back of the printer. The ethernet is on the right, cash drawer in the middle, and power cable on the left. Wait for 10 seconds, then turn the printer back on. The printer will blink an orange exclaimation point and have a solid blue light. Wait until a receipt prints an IP Address like this:

Code Block
************************************
IP Address         : 192.168.54.2x
SubnetMask         : 255.255.255.0
Gateway            : 192.168.54.xxx
DHCP               : Enable
************************************

Use CheckHealth in the SetupPOS utility to test the OPOS driver.

Navigate to the start menu and search for SetupPOS.

Run the setup utility. At the UAC message, click yes.

At the main screen, double click on CashDrawer on the right.

Right click on StandardE, then click on Check Health Interactive.

Click the Start button on the window.

If the cash drawer pops, close the check health window and exit the setup utility.

Test the printer and cash drawer with a no sale in RMH.

Open POS and log in as a manager.

To test the drawer, perform a no sale by pressing F8. Once the receipt printer prints a no sale receipt, the drawer should pop.

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