Functional Overview
Paper Feed System
Manual Feed Printing
The presence of paper in the-manual feed slot is detected when the
Input Paper Sensor (PSI) reaches the Manual Feed Sense
Position. The Manual feed system’s paper motion begins when the
a
DC Controller PCA, after receiving a PRINT signal, starts the
Scanner Motor, the Main Motor, and the fuser heating element.
The Registration Solenoid (SL1) is OFF at this time, allowing the
registration roller to rotate. This feeds the paper from the Manual
Feed slot to the Registration Position.
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The remainder of the manual feed print process is identical to the
cassette feed process, described above.
Small Media Rollers (LaserJet 4P/4MP)
The LaserJet 4P/4MP has an additional set of Small Media
Rollers, located midway between the pickup and delivery rollers
(see Figure 5-18). These rollers allow the printer to accept a
smaller minimum paper size: 3 x 5 inches (76x 127 mm).
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