Figure 5-6 shows the locations of the photosensors, switches, solenoid, and other important printer elements. Table 5-1 describes the function of each photosensor and the solenoid.

Figure 5-6

 

 

 

Solenoid and Sensors

 

Table 5-1

 

 

 

 

Solenoid and Photosensors

 

 

 

 

 

 

 

 

 

 

 

No.

 

 

Name

Description

SL1

 

Paper Pick-up Solenoid

Enables the Paper Pickup Roller.

PS201

 

Paper Exit Sensor

Senses when paper has successfully moved out of the

 

 

 

 

fusing area and the next sheet of paper can be fed.

PS202

 

Paper Out Sensor

Senses no paper in either the Paper Input Bin or Manual

 

 

 

 

Input Slot. If this sensor does not sense paper in the Input

 

 

 

 

Paper Bin or the Single-Sheet Input Slot, the formatter

 

 

 

 

displays the paper-out indication on the front panel. Paper

 

 

 

 

must be reloaded before printing can resume.

PS203

 

Paper Registration Sensor

Detects the leading and trailing edges of the paper.

 

 

 

 

Synchronizes the photosensitive drum and the top of the

 

 

 

 

paper.

PS204

 

Door Open/Cartridge Sensor (HP LaserJet 5L only)

Detects whether printer door is open and cartridge is in

 

 

In the HP LaserJet 6L, SW101 performs the

place. If the door is open or the cartridge is not in place, the

 

 

functions of 5L’s PS204.

control panel LEDs will display an error message. Printing

 

 

 

 

cannot continue until the door is closed and the cartridge is

 

 

 

 

in proper position.

 

 

 

 

 

Functional 5 Overview

Functional Overview 5 - 17