User's Manual

16 QL 420 User’s Guide
• Printers with a wireless QuickLink module installed: a rap-
idly blinking LED indicates normal data transmission.
•A steadily lit yellow LED indicates an error condition. This
can be caused by one of the following:
1. The media cover is not completely closed and latched.
2. The printer is out of media.
continued
FIGURE 9: STANDARD CONTROL PANEL
Green LED
Steady Light indicates power on
and/or established RF link.
Fast Blink indicates no RF link (on
RF equipped units only)
Slow Blink means low battery
Yellow LED
Steady Light indicates error
condition: out of media or
media cover not closed.
Fast Blink indicates RF activi-
ty (on RF equipped units
only)
Fast blink with beeper indi-
cates no application loaded
Power Button
Press to turn unit
on. Press again to
turn unit off
Feed Button
Press to advance the me-
dia one blank label or a
software determined length
of journal media.
Function Button
Specific functions are under
printer application control.