HP LaserJet 4v/mv Service Manual - Page 71

Motors

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Motors The Main Motor (M1) is controlled by the DC Controller PCA. The Main Motor drives the Main Drive Assembly and rotates during the Initial Rotation period (following initial power-ON), the Print period, or the Last Rotation Period, or whenever the printer front door is opened and closed. The Scanner Motor is controlled and monitored by the DC Controller. It rotates the scanner mirror during the Initial Rotation period and the Print period. The Fan Motors (FM1, FM2, and FM3) are controlled and monitored by the DC Controller PCA. The Intake Fan (FM3) operates continuously, and the Exhaust Fans (FM1 and FM2) operate at low speed in the Standby Mode, and at high speed during the Initial Rotation, Print and Last Rotation periods. The exhaust fans turn off in the Power Save mode after the Fuser cools down. Functional Overview 5-9 Functional 5 Overview

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Motors
The
Main Motor (M1)
is controlled by the DC Controller PCA.
The Main
Motor drives the Main Drive Assembly and rotates during the Initial
Rotation period (following initial power-ON), the Print period, or the Last
Rotation Period, or whenever the printer front door is opened and closed.
The
Scanner Motor
is controlled and monitored by the DC Controller.
It
rotates the scanner mirror during the Initial Rotation period and the Print
period.
The
Fan Motors (FM1, FM2, and FM3)
are controlled and monitored by
the DC Controller PCA.
The Intake Fan (FM3) operates continuously, and
the Exhaust Fans (FM1 and FM2) operate at low speed in the Standby
Mode, and at high speed during the Initial Rotation, Print and Last
Rotation periods.
The exhaust fans turn off in the Power Save mode after
the Fuser cools down.
5
Functional
Overview
Functional Overview 5-9