User Guide

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