I can do a test print, but the labels do not print. When I select a label from test print, the paused light gives 0ne blink, then nothing happens

Either the wrong printer is selected or the wrong size label inserted. Another possibility could be the incorrect size label in the format.

Check to see if the pause light is on also. Make sure you are using the correct printer driver. (105se)
Try in ZPL and then try in ZPLII.
Check Delimiter character 2CH
Check Format prefix 5EH
Check Control prefix 7EH

Have to callibrate the printer.
With printer ready
press Pause once.
press Pause for 3 seconds until
- The labels are fed (let 3 labels go through)
the Choose detection preprinted lmabels in the driver
Or
a message Transmissive is displayed.
Release he pause button.
Press on the pause button to feed 2 or 3 labels
Then select transmissive preprinted in the driver.
Else
Restart to change from transmissive to reflective if you use black mark.
Press pause to feed 2 labels
Choose relective preprinted or reflective manual in the driver

This problem is a detection problem, due to a bad sensor selection or incorrect label size.

If the labels are white labels with a separation between each, select TRANSMISSIVE. If the labels are preprinted, select the TRANSMISSIVE PREPRINTED LABELS and set the threshold doing this.

With the printer in ONLINE, press PAUSE once, the message PAUSE appears in the display, press and hold on the PAUSE key, TRANSMISSIVE is displayed, release the key and press PAUSE until labels starts to feed, let feed some labels (5 or 6) and release the key. Press Restart and start to print.

You should try a factory reset. Power off the printer. Hold the "pause" and "feed" buttons down while powering up. Allthe lights will blink and when they stop blinking, release the "pause" and "feed" buttons. This will factory reset the printer.

You can find the manual in www.zebra.com, and try reset, pressing FEED and PAUSE keys and turn on printer, release keys until move labels.

Go into the printer driver and select print a test page, does it print out?
If so then try printing from your label software, it should work, if not then it is your software that is at fault.
If the test page does not print out then check all the settings in the print driver, so they are the same as the physical label.
If non of this helps then go to www.lancerlabels.co.uk and do a live chat to Michael.

When the printer receives print information, the power LED blinks, but then you do not receive anything, check the communication cable LPT or serial is the speed of communication and the correct port (COM1, COM2, etc) .

most likely it is a printer driver issue. There's 2 drivers, one for 200dpi and one for 300dpi. Use the one for 200dpi. It could also be the label setting is incorrect. Try running a calibration.

When you print labels or envelopes you need to select the correct tray from the print menu. (File print or ctrl P) or the printer will think the normal paper tray is being used.

You can force the printer to change the tray after the print has been sent by pressing the continue button on the printer, just make sure that the normal tray has no paper in it.