Hewlett-Packard Color LaserJet 1500 Service Manual
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Brand: HP
Category: All in One Printer , PDA , Printer
Type: Service manual for HP 1500
Pages: 312 (14.61 Mb)
74 Theory of operation Q2488-90901
Pickup and feed system
The pickup and feed system consists of several types of feed rollers and sensors. The dc
controller drives the paper and feed system by controlling two motors, two clutches, and the
solenoid.
Two photo-interrupters (PS1 and PS711) detect media as it passes. If media does not reach or
pass each sensor within the specified time period, the dc controller determines that a jam has
occurred and alerts the video controller circuit.
The following components are identified in figure 19:
● PS1 fusing-delivery paper sensor
● PS711 registration paper sensor
● PS718 tray 1 (multipurpose tray) paper sensor
● PS720 fuser wrap-jam sensor
● DCM701 main motor
● PM702 fuser motor
● SL92 tray 1 pickup solenoid
● CL1 registration clutch
● CL2 roller-engaging clutch