EXP Computer C4077-90960 - Manual (Page 49)

Indicator Lights
The control panel indicator lights are described in the following table. The
column labeled “Do this:” includes an action only when an action is
required.
When this
indicator:
Looks like
this:
It means this: Do this:
On Line On
Flashing
Off
Ready to receive data.
Going off line.
Printer is off line.
No action required.
Press [On Line] to place
printer on line.
Data Off
Flashing
On
No data is being
received or processed in
the printer.
Data is being received or
processed.
Data is resident in the
printer and processed as
far as possible. More
data is expected, but no
activity on the channel at
this time.
No action required.
No action required.
No action required.
Attention On
Flashing
Off
Catastrophic error.
Printer system is halted.
The printer needs
attention.
There are no messages
or error conditions
requiring attention.
Turn printer OFF, then
ON. If problem persists,
refer to Chapter 7.
Read and respond to
display panel message.
No action required.
Table 3-2 Indicator Lights
3-4 Operating Overview