Lexmark W840 Service Manual

1-26 Options Service Manual
4024-XXX
Media size detection
Media size is automatically detected by loading media in the tray and by the rear media edge guide that is
attached to the media tray assembly and aligned with the side of the media. The position of the rear media edge
guide is detected by the sensor (HCF media size L) and the sensor (HCF media size R).
Note: B5L and 7.25” x 10.5” L can be switched by the NVM.
Detection of media size is carried out during the startup procedure and when a specified time has passed from
the sensor (HCF media tray set) level change “off to on” with the tray inserted. Media size is also detected at
every constant time. When the same size has been detected at specified times consecutively, the size of media
loaded in the tray is determined.
If a sensor level pattern does not match the above table, media size cannot be determined. In this case, though
the tray is lifted, print start by feeding media from the tray is inhibited.
Sensor for media size detection
Size sensors
There are two size sensors: sensor (HCF media size R) and sensor (HCF media size L).
By moving the HCF rear media edge guide to turn on/off these sensors and by using the sensor level patterns,
media size can be determined.
Tray lifting
Tray lift operation starts automatically when the HCF media tray is inserted with media loaded.
Media is lifted and stops at the feeding position. At the same time, detection of no media and remaining media
volume becomes available.
Media size Sensor (HCF media size R) Sensor (HCF media size L)
B5L off off
7.25” x 10.5” L
8.5” x 11” L on off
A4L off on
Sensor (HCF media size R)
Sensor (HCF media size L)
HCF rear media guide

Lexmark W840 Specifications

General

Color	No
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	6.8 s
Print speed (black, normal quality, A4/US Letter)	50 ppm
Internal memory	256 MB
Sound power level (standby)	28 dB
Sound pressure level (printing)	54 dB
Total input capacity	1100 sheets
Total output capacity	500 sheets
Maximum input capacity	5100 sheets
Display	LCD
Maximum print size	297 x 420 mm
Media types supported	Plain paper, envelopes, card stock, transparencies, paper labels
Media weight (tray 1)	Plain paper: 64 to 216 g/m2; Card stock: up to 199 g/m2 Index
Maximum ISO A-series paper size	A3
Page description languages	PDF 1.5, PPDS
I/O ports	USB, Parallel, 1 internal solutions port (ISP)
Mac compatibility	Yes
Compatible operating systems	Windows, Linux, UNIX, Mac, NetWare and OS/400
Recommended operating temperature range (T-T)	16 - 32 °C
Sustainability certificates	ENERGY STAR
Power consumption (standby)	9 W
Power consumption (printing)	700 W
Power consumption (PowerSave)	105 W
Bundled software	MarkVision Professional
Operating relative humidity (H-H)	8 - 80 %

Weight and Dimensions

Dimensions (WxDxH)	616 x 520 x 475 mm