Disable scanning | Scanning is disabled to allow the host to download configuration/ |
| setup changes between jobs and to handle certain types of errors. |
| Scanning is also disabled when one of the following conditions |
| occur: |
| • The scanner is first powered on using the power switch. |
| • A SCSI bus device Reset command is executed. |
| • An |
| control panel. |
| • A |
| computer. |
| • An error occurs requiring fault recovery. |
| NOTE: When scanning is disabled, documents cannot be scanned |
| until the host enables scanning. |
Error handling | The scanner recognizes and reports a variety of error conditions. |
| Some errors are reported to either the host (via the SCSI interface) or |
| the operator control panel, while others are reported to both the host |
| and the operator control panel. |
| An error (via the SCSI interface) is defined as either a current or |
| deferred error. |
| A current error results from a problem in processing the current |
| SCSI command. This can include sending an invalid command, |
| trying to read from an empty image buffer, or an |
| condition. Since one or more errors may be pending at any time, |
| current errors are reported first. |
| A deferred error results from an error condition within the scanner, |
| such as a document jam. Deferred errors that may have occurred |
| are reported after current errors. |
| NOTE: Low level SCSI commands and information will be handled |
| by your device driver. The following information is provided |
| for reference only. |
|