HP color laserjet 2550 series Manuale Di Servizio

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CL1 registration clutch
CL2 roller-engaging clutch
Figure 4-6.
Pickup and feed system
Paper trays
The dc controller drives the operation sequence of the paper trays. It signals the driver PCB
in optional tray 2 (250-sheet paper tray) and in optional tray 3 (500-sheet paper tray). In
optional tray 2, the printer main motor drives the tray solenoids. In optional tray 3, each
driver PCB controls the motors and solenoids in its paper tray.
The following components are identified in 
DCM701 gear-train motor (printer)
SL9 pickup solenoid (optional tray 2)
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Chapter 4 Theory of operation
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