I'm pretty sure the second device driver listed on this page:
http://www.epson.de/eng/isd/support/download/
is the one your POS rinter uses.
The first line of attack in analyzing a prolem with peripherals is to isolate each component and see which one is defective.
Read all the way through before you do anything!
1) Disconect the printer cable from the computer. Power the printer down and back up. And run a printer self-test according to Epson's instructions.
2) If you have another device in your facility which uses the same type of cable as the T88i, swap cables and see if that's not the problem. Also make sure you clean the coupling surface on the cable, as corrosion is a common occurance and what does not meet the eye is enough to impede data flow. Use a fine emory board, or fine sandpaper and some canned wind to clean each of the contacts, being very careful not to bend any of them. (Don't confuse "cable" with CAT5 network wires in the above instructions. The canned wind alone should be adequate for those.) In either case, still another possibility is that you'll need a repeater to boost a weak signal on a long cable.
3) It's highly likely that this is a network printer, so you should read the section in the user's manual about how to uninstall the software associated with the printer. If steps 1) and 2) did nothing, that's what you will have to do next. Download the driver from the site listed above, on the assumption that the installed software is corrupted. Reinstall the device driver software for the printer afer a reboot of the computer.
4) One possibility that I did not mention because it's too obvious: If the printer is waiting for a modem to dial a number and get an approval for a MasterCard or Visa purchase, the problem is not in the printer at all, but in the modem. Although, it could also be that the problem is with the server which answers the call at the financial institution which approves the transaction.
IF THIS PROBLEM occurs erratically, for instance, its fast at 2 P.M., but slow at 11 A.M., that's evidence enough that there's no problem with the printer at all. Don't go running on a wild goose chase! For POS applications, install the fastest modem you can afford at your end. You will be losing customers if you don't, and people get frustrated and start fighting with each other if they're forced to wait for something they can't see.
If this is a new printer you should call Epson and let them walk you through each step of the diagnosis and remedy. Most likely you've paid for their service already, and in my exerience they are a very reputable company.
Good intentinos pave the road to hell. I'm a nice guy, but I can't be held liable for any incompetent advice I give you. I'm just putting stuff in perspective so that you feel somewhat less helpless, and maybe a little more articulate on the subject.
