64 Functional overview EN
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
PS204 (5L only)
SW101
PS202
PS203
SL1
Drive Unit
Main Motor
Formatter
SW201
PS201
DC Controller
Heating Element
Laser Scanner
Pick-up Roller Assembly
Table 5-1 Solenoid and sensors
Number 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
Tray or Manual Input Slot. If this sensor
does not sense paper in the Input Paper
Tray or the Single-Sheet Input Slot, the
formatter displays the paper-out indication
on the Control 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) In the HP LaserJet 6L, SW101
performs the function of 5L’s PS204. The
6L Pro has no toner cartridge sensor.
Detects whether printer door is open and
cartridge is in place. If the door is open or
the cartridge is not in place, the control
panel LEDs will display an error message.
Printing cannot continue until the door is
closed and the cartridge is in proper
position.
Service.book Page 64 Thursday, September 14, 2000 11:15 AM
