Lexmark C950 Service Manual

Diagnostic aids 3-123
5058-030
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The sensor (tray 5 feed-out) detects the presence of media fed from the tray and controls the media feed lift
motor stop and the transport motor speed. It also detects media jams to identify the media jam zone.
HCF media feed unit assembly operation
Upon receiving the feed start signal from the controller, the HCF activates the pick solenoid after a preset time
has passed to press the pick roll against the media in the tray.
After a preset time has passed, after receiving the feed start signal, the HCF feed lift motor rotates forward to
feed media from the tray to the feed roll side with the pick roll.
When the end of the media reaches the sensor (pre-feed) and the sensor turns on, the pick solenoid is
deactivated so that the pick roll separates from the media in the tray.
The pick solenoid remains activated at a high voltage for a specified time from its actuation. After that, it is
activated at a low voltage until it is deactivated. If the HCF receives the feed start signal for the next media while
Front
HCF feed lift motor
HCF transport motor
Pick roll
Feed roll
Separation roll
HCF media
transport roll assembly
Sensor (tray 5 feed-out)
Sensor (pre-feed)

Lexmark C950 Specifications

General

Print Resolution	1200 x 1200 dpi
Duplex Printing	Yes
Processor Speed	1.2 GHz
Connectivity	Ethernet, USB
Print Technology	Laser
Print Speed	50 ppm
Monthly Duty Cycle	300000 pages
Recommended Monthly Page Volume	5, 000 - 33, 000 pages
Memory	1024 MB
Hard Drive	Optional
Output Capacity	500 sheets
Interface	USB 2.0
Media Type	Plain paper, Card stock, Labels, Envelopes, Transparencies
Total Media Capacity	5140 sheets
Media Sizes	Letter, Legal, A4, A5, Executive, Folio, Statement
Operating Systems Supported	Windows, Mac, Linux