Basic sequence of operation The microprocessor (CPU) on the ECU controls the operation sequence of the device. The following events take place during normal device operation: Table 5-1 HP LaserJet M1005 MFP Period Purpose Remarks WAIT. After the device is turned on until Ready appears on the control-panel display. To perform the firmware initialization. Tests RAM and establishes communication with the control panel. READY. From the end of the WAIT period until the user initiates action. To keep the device ready to print, copy, or scan. CALIBRATION. From the time the copy or scan button is pressed until the SCAN period. To compensate for variables in the scanning system.
This occurs before the scan bar moves past the media. SCAN. From the end of the CALIBRATION period until the scan bar returns to the home position. To scan one page of the original document. ENWW Basic sequence of operation 45