Description: Writing this object allows a device self test to be started. Reading this object provides an indication what self-test is currently executing, if any. Actual self-test operation is device specific. A self test may not be allowed at any arbitrary time. If the device supports the requested self test, but can not start the execution of the self test when requested, the device will respond with . If a non-destructive self test is being started, the device will generate a response before the self test is completed. RECOMMENDATION: If the device is ready (i.e. the NOT-READY-PRINTER object does not contain any items, except maybe being off-line) and is idle (i.e. the NOT-IDLE object does not contain any items), this request should always succeed. This provides a mechanism for driver writers to always determine if the action will succeed or not. Additional information: The eNonDestructiveSelfTest performs limited testing on the printer and its attached paper handling devices. After the self-test is complete a configuration page is printed. The recommended way to cause a configuration page to be printed is to use the PRINT-INTERNAL-PAGE object. Setting this object to eNonDestructiveSelfTest results in a status of and a value of eNonDestructiveSelfTest being returned. If the printer is not idle (whether printing an external job or printing an internal page), this action will be delayed until the next job boundary. See the PRINT-INTERNAL-PAGE object for more details.