Javelin Systems Inc (81160083W98) PC Desktop "cs400" Questions

...at: http://the-checkout-tech.com/ javelin CS100 User javelin CS200 User javelin CS300 User javelin CS400 User javelin CS500 User Programming javelin CS600 User javelin CS700 User Programming Hi,i ...

I hv a cs400 javelin cash register I push any of the programmer keys and it says invalid opera. How do I fix this? I hv a Javelin cs400 cash register I push any of the programmed keys and it says ...