Control; Control Of Paper Size; Selective Control On Paper Cassette; Printhead Light Quantity Control - Dell 3110cn Service Manual

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5. Control

"ON/OFF of Paper Size Switch of SIZE SWITCH ASSEMBLY" and "Diag Tool indication data" are

shown in the table below.

Paper Size Switches are indicated as SW1, SW2, and SW3 from the above one.

LEGAL14" (SEF)

LEGAL13" (SEF)

EXECUTIVE (SEF)

LETTER (SEF)

ON: The actuator is pushing the size switch.

The preferred paper cassette selected after powering on can be changed via the printer settings. The

default is Tray1 (TBD).

The paper feeder by the paper tray under the printer is called "Tray 1", and the

optional TRAY is called "Tray 2".

The image data are entered to the laser diodes in the PRINTHEAD as electric signals (data are

expressed with high and low voltage values), and the laser diodes convert the image data from electric

signals to optical signals (data are expressed with blinking laser beams).

Variations in light quantity of laser beams or variations in optical system (such as lenses) or drum

sensitivity cannot attain a proper electrostatic image, therefore, the laser beam light quantity is

monitored and controlled by the laser diodes.

The PRINTHEAD in this printer has four laser diodes for yellow, magenta, cyan, and black respectively,

and the light quantity is automatically adjusted for each color.

Version 1 2006.02.04

Paper Size Switch

Chapter 6 Principles of Operation

indication data

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