Datamax ST-3210 Operator's Manual page 23

Media Guides
(Too Loose)
Media Guides
(Too Tight)
Slide the ticket stock farther into the Media Guides until it is grabbed
by the loading mechanism, and then allow the printer to complete the
positioning process. Close the Access Cover.
Note: If automatic loading doesn't occur, try the following:
1) Ensure that the Printhead Latch is locked.
2) Press the PAUSE button (the On-Line Indicator will go 'Off') and
then repeatedly press the F2 button while gently pushing the
stock forward until the printer grabs the ticket.
3) Press the PAUSE button (to return to the on-line mode).
If the ticket was not fed to a proper position, the Media Sensor may need
adjustment; see Section 4 for details.
S-Class
Thumbscrew
Thumbscrew
15