Network printers are sporadically spitting out a line that says (alternately...) 'NG' or 'NE'.

[MadMags]

I have two network printers (Star TSP-650) on my setup, serving 4 Square Register terminals. 

In the past two days,  both of these are sporadically printing (alternately...) a single line of text that simply reads 'NG' or 'NE'.  Maybe one every minute or so. So when we go to print a receipt, we need to tear off 20 or so lines of these nonsense outputs.  After a while -- maybe 4 or 5 hours, the printer locks up and power cycling it has no effect.  Only way I've found to clear it is to unplug, wait an hour or so, then turn it back on.

Any ideas on what may be causing this issue? Thanks for any input!

[JJ_]

Hey there @MadMags 

The "NG" and "NE" codes are likely error indicators:

• NG: Typically means "No Good" - indicating a command or data processing error
• NE: Likely "Network Error" or "No Entry" - suggesting communication issues

The fact that both printers are alternating these messages suggests they're both trying to process the same corrupted data or commands from your Square Terminals.

Most Likely Causes

1. Network Communication Issues: IP conflicts, network congestion, or faulty network infrastructure
2. Printer Firmware Issue: The printers may need firmware updates
3. Power/Heat Issues: Extended operation causing instability

Immediate Steps to Try:

1. Network Isolation Test:

   • Temporarily disconnect one printer
   • See if the remaining printer still exhibits the issue
   • This will help determine if it's a network conflict

2. Restart Network Equipment:

   • Power cycle your network switch/router
   • This often resolves communication issues

3. Check for IP Conflicts:

   • Ensure each printer has a unique, static IP address
   • Verify no other devices are using the same IPs

Let me know if this helps, and if you have additional questions. Will keep an eye out for your reply. 

[buchmandor]

The exact same thing is happening to our printer, starting 3 weeks ago.