HP 4101mfp manual General descriptions, MFP block diagram

General descriptions

This section describes the individual MFP components and their roles in the scanning process. Figure 18 illustrates the relationship between the MFP components. Figure 19 illustrates the flatbed-assembly component locations. Figure 20 illustrates the ADF-unit component locations. The following components are identified:

●	scanner controller board		●	power supply
	•	CPU	●	flatbed intake fan
	•	fan-motor drive circuit	●	intermediate PCB
	•	ADF drive motor circuit	●	ADF cover-open sensor
	• optical-unit motor circuit			(PS10)
	•	optical-unit home-position	●	ADF unit
		sensor (PI1201)		•	document-detect sensor
●	optical unit				(PS2)
	•	scanner motor		• document leading-edge
					sensor (PS1)
	•	inverter PCB
				•	ADF drive motor
	•	scanning lamp
				•	pickup solenoid
	•	CCD driver PCB

The block diagram below illustrates the relationship among the MFP components.

Figure 18. MFP block diagram

54 Theory of operation C9148-90909