Instruction manual

Troubleshooting
Table 3–1 (Cont.) Identifying and Correcting Problems
Symptom Possible Cause Suggested Solution
Video display has
moving dots and
distorted lines. The
display rolls or
flickers.
There is
electromagnetic
interference.
Move any electromechanical device,
such as a fan or a motor, away from the
terminal or move the terminal.
CAUTION: Before moving the
system, turn the power off and wait
20 seconds to let static electricity
dissipate.
Refresh rate is too
low.
From the Display menu item, choose
Refresh rate and select 72 Hz.
The terminal is
faulty.
Set the power switch to the off position
and contact Digital Services.
The printer will not
print.
The printer is off. Turn on the power to the printer.
There is a paper
jam.
Check the printer supplies: paper, toner,
or ribbon.
The printer cables
are not connected.
Check the cables.
Communication port
is not set correctly.
From the Communication menu
item, choose Port select and match
the setting to the connections on the
terminal.
If you have a
serial printer, its
speed may be set
incorrectly.
From the Printer menu item, choose
Serial print speed and match the
setting to the one in your printer
manual.
Modifier keys
remain in effect
after released.
Accessibility aid is
enabled.
Check keyboard indicator line for icon.
This feature is enabled by pressing any
modifier key five times. To disable, press
and hold a modifier key and then press
another key.
Maintenance and Troubleshooting 3–3