...
Follow the thick black cable of the pin pad to the fan-out hub (about 2 feet away).
At the fan-out hub, disconnect the small black power cable (the L shaped barrel connector labelled PWR in this diagram).
Wait for 10 seconds (very important).
Then, plug the power connector back in.
It takes about a minute for the pin pad to boot up. Once the pin pad displays Online, it can be used again.
...
Q4: The bar code scanner is not working properly. How do I fix it?
The bar code scanner is a USB device. To reset it, unplug it from the USB port on the back of the cash register PC. Clean out the USB port with an air blower. Then, plug the scanner back in.
If the scanner scans the bar code but doesn’t append a <CR><LF> to the end of each scan, then it needs to be re-configured. For Zebra (or Motorola) scanners, scan the following bar code:
...