Operation
| FormsPro 4503) is displayed. ONLINE, OFFLINE, and |
| other informational and error messages are displayed |
| when the conditions occur and/or you press the ONLINE |
| button without clearing an error condition. This display |
| also indicates various parameters and their values when |
| the printer is in the setup mode. |
POWER | This green LED indicates that the printer is plugged into |
| a power source, the power switch is on, and the internal |
| power supply is functional. |
ONLINE | This green LED indicates that the printer is ready to |
| receive printable characters and/or commands from the |
| host computer, and print or perform as requested. |
FAULT | This red LED indicates that the printer has detected an |
| error condition, such as paper out, paper jam, or an |
| internal diagnostic error. Many internal diagnostics are |
| performed each time the printer is turned on or reset, and |
| some continue to monitor operation during printing. For |
| a list of error messages and suggested remedies, refer to |
| the “In Case of Difficulty” section of this manual. |
SETUP | This yellow LED indicates that the setup mode has been |
| entered. |
Bell | The printer sounds a tone when it is directed to do so by |
| a bell character (BEL) from the host computer. Other |
| tones also alert operators of error conditions, such as |
| paper out, and indicate when buttons are pressed. |
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