Printronix SL5000 User Manual page 310

Chapter 6
Restore The Printer To Operation
Table 16. Printer Problems and Solutions (continued)
Symptom
LCD message display is
illuminated and the printer
appears to be working, but
nothing prints and "Invalid
Data" displays.
ONLINE status indicator is
flashing.
Printer fails to turn on, the
display is not backlit, and the
fan is not running.
310
Solution/Explanation
This message informs the user that the printer has received
data, but no valid commands were found. This typically occurs
when an incorrect emulation or SFCC was selected. This
message will continue to display until new data is received or
when the printer is put offline.
1. If the emulation and SFCC are correct, additional
diagnostic information can be obtained by selecting the
desired option under the "xxx Diagnostics" menu, found
under the Emulations menu.
2. Afer selecting the desired option, rerun the job to obtain
the additional diagnostic information.
1. Check the LCD for a specific fault message. Press the
PAUSE key, and if a fault message displays, refer to the
LCD Message Troubleshooting table on page 317.
2. Check for an Out-of-Media condition or missing labels in
the middle of a roll. Load the correct media.
3. Check that the ribbon and label stock are correctly routed.
Load ribbon and label stock correctly.
Power Failures
1. Check that the printer AC power cord is correctly attached
to the printer and to the AC power outlet.
2. Have a qualified electrician test the AC wall outlet for the
correct power range. Locate the printer in an area that has
the correct power range.
3. Check the AC power cord. Replace a damaged AC power
cord or one that you suspect may be bad.
4. Call your authorized service representative.