Lexmark X543 Service Manual

							General information1-9
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Media input size specifications
Input source250-sheet tray
Optional 650-sheet 
Duo Drawer
MP feeder
a (in the
650-sheet Duo Drawer)
Manual slot
Duplex
A4 210 x 297mm✔✔✔✔✔
A5a 148 x 210mm✔✔✔✔✘
A6 ✘✘
✔✔✘
JISb B5a 182 x 257mm✔✔✔✔✔
JISb B4✘✘✘✘✘
Letter 8.5 x 11 in.✔✔✔✔✔
Legal 8.5 x 14 in.✔✔✔✔✔
Executive 7.25 x 10.5 in.✔✔✔✔✘
Oficio (Mexico)d✔✔✔✔✔
Foliod 8.5 x 13 in.✔✔✔✔✔
Statement 5.5 x 8.5 in.✘✘
✔✔✘
Universalc 
148 x 210mm to 
215.9 x 355.6mm
(5.83 x 8.27 in. to 
8.5 x 14 in.)
✔✔✔✔
✘
76.2.x 127mm to 
215.9 x 355.6mm
(3 x 5 in. to 8.5 x 14 in.)✘✘
✔✔✘
210mm x 279.4mm to
215.9mm x 355.6mm
(8.27 in. x 11 in. to 
8.5 in. to 14 in.)
✔✔✔✔
✔
7¾ Envelopea 98.4 x 190.5mm✘✘
✔✔✘
9 Envelopea ✘✘
✔✔✘
10 Envelopea 104.8 x 241.3mm 
(4.12 x 9.5 in.)✘✘
✔✔✘
DL Envelopea 110 x 220mm 
(4.33 x 8.66 in.)✘✘
✔✔✘
C5 Envelopea 162 x 229mm 
(6.38 x 9.01 in.)✘✘✔✔✘
✔—Supported without size 
sensing
✘—Not supported 
						

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Media input type specifications
B5 Envelopea ✘✘✔✔✘
Other envelopea 
Length: 98.4–431.8mm 
(3.8–17 in.)
Width: 89–297mm (3.5–11.7 in.)✘✘
✔✔✘
aThe MP feeder runs slower if A5, statement, B5, or envelope are loaded.
bJapanese Industry Standard.
cAlthough the user may select Universal paper size for these sources, not all tray guides can be adjusted to 
all Universal media sizes.
dIf a source supports size sensing and this features is activated, then neither Oficio or Folio appear in the 
list of supported media sizes. These values only appear in a list of supported media sizes when the source 
is non-size sensing or the size sensing is deactivated.
Input type250-sheet tray
Optional 
650-sheet 
Duo Drawer
MP feeder
(in 650-sheet 
Duo Drawer)
Manual feeder
a
Duplex
Plain paper✔✔✔✔✔
Card stock✔✔✔✔
✘
Transparency✔✔✔✔✘
Recycledb✔✔✔✔✔
Glossy✔✔✔✔✔
Heavy glossy
✘✘✘✘✘
Paper-backed labels✔✔✔✔
Bond✔✔✔✔✔
Envelopes
✘✘✔✔✘
Rough envelopes✘✘✔✔✘
Letterhead✔✔✔✔✔
Preprinted✔✔✔✔✔
Input source250-sheet tray
Optional 650-sheet 
Duo Drawer
MP feeder
a (in the
650-sheet Duo Drawer)
Manual slot
Duplex
✔—Supported without size 
sensing
✘—Not supported
✔—Supported 
✘—Not supported 
						

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Media output size and type
There is a single 100-sheet output bin available for this printer and no additional output options.Colored paper✔✔✔✔✔
Light paper✔✔✔✔✔
Heavy paper✔✔✔✔✔
Rough or cotton✔✔✔✔✔
Custom type 
b✔✔✔✔✔
aFor MP feeder and manual feeders the Default Source Menu displays Manual Paper and Manual Env. Select 
Manual Env. for envelopes or when the type in Custom Type  is an envelope. For other types, use 
Manual Paper.
bThe duplex unit supports this media type as long as the customer has selected the custom type from those 
types the duplex unit supports.
Input type250-sheet tray
Optional 
650-sheet 
Duo Drawer
MP feeder
(in 650-sheet 
Duo Drawer)
Manual feeder
a
Duplex
✔—Supported 
✘—Not supported 
						

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Weight ranges for each media type
MaterialTy p eWeightSelect
Paper 
2, 5, 7, 8 Xerographic or 
business paper60 to 74. 9 g/m2 grain long 
(16 to 19.9 lb bond) 2, 5Light Paper
75 to 89.9 g/m
2 grain long
(20 to 23.8 lb bond) Plain Paper
90. to 104.9 g/m
2 grain long 
(23.9 to 27.8 lb bond)H eavy Paper
105 to 176 g/m
2 grain long 
(27.9 to 47 lb bond) 7Card stock
Specialty papers Gloss Book 88 to 176 g/m
2 grain long (60 to 120 lb book)
Gloss Cover 162 to 176 g/m
2 grain long (60 to 65 lb cover)
Card stock—upper 
limit (grain long) 
1Index Bristol 120 g/m2 (67 lb)
Tag 120 g/m
2 (74 lb)
Cover 135 g/m
2 (50 lb)
Card Stock—upper 
limit (grain short)
 1Index Bristol 163 g/m2 (90 lb)
Tag 163 g/m
2 (100 lb)
Cover 176 g/m
2 (65 lb)
Transparency 
6  Laser printer 170 to 180 g/m2 (45 to 48 lb bond)
Labels—upper limit Paper 131 g/m
2 (35 lb bond)
Envelopes
(Multipurpose 
feeder or manual 
slot only)Sulfite, wood-free or 
up to 100% cotton 
bond60 to 105 g/m
2 to 28 lb bond)3, 4
1
  For 60 to 176 g/m2 paper, grain long fibers are recommended. 2Paper less than 75 g/m2 (20 lb) must be printed with Paper Type set to Light Paper.3100% cotton content maximum weight is 24 lb bond.428 lb bond envelopes are limited to 25% cotton content.5The duplex unit supports paper weights between 60–105 g/m2 (16–28 pound) grain long bond. The duplex 
unit does not support card stock, transparencies, envelopes, and labels.
6 Lexmark transparency part numbers 12A8240, and 12A8241 are supported from the standard tray, manual 
slot and the multipurpose feeder.
7Paper 90 to 104.9 g/m2 (23.9 to 27.8 lb) must be printed with Paper Type set to Heavy Paper.8 Paper 105 to 176 g/m2 (27.9 to 47 lb) must be printed with Paper Type set to Cardstock. 
						

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Media guidelines
Paper characteristics
The following paper characteristics affect print quality and reliability. Consider these characteristics when 
evaluating new paper stock.
Weight—The printer can automatically feed paper weights from 60 to 176 g/m2 (16 to 47 lb bond) grain 
long. Paper lighter than 75 g/m2 (20 lb) might not be stiff enough to feed properly, causing jams. For best 
performance, use 80 g/m2 (21 lb bond) grain long paper. For paper smaller than 182 x 257 mm (7.2 x 10.1 
in.), we recommend 90 g/m2 or heavier paper.
Curl—Curl is the tendency for paper to curl at its edges. Excessive curl can cause paper feeding problems. 
Curl can occur after the paper passes through the printer, where it is exposed to high temperatures. 
Storing paper unwrapped in hot, humid, cold, or dry conditions, even in the trays, can contribute to paper 
curling prior to printing and can cause feeding problems.
Smoothness—Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it 
properly. If paper is too smooth, it can cause paper feeding or print quality issues. Always use paper 
between 100 and 300 Sheffield points; however, smoothness between 150 and 200 Sheffield points 
produces the best print quality. 
Moisture content—The amount of moisture in paper affects both print quality and the ability of the printer 
to feed the paper correctly. Leave paper in its original wrapper until it is time to use it. This limits the 
exposure of paper to moisture changes that can degrade its performance. Condition paper before printing 
by storing it in its original wrapper in the same environment as the printer for 24 to48 hours before printing. 
Extend the time several days if the storage or transportation environment is very different from the printer 
environment. Thick paper may also require a longer conditioning period.
Grain direction—Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain 
long, running the length of the paper, or grain short, running the width of the paper. For 60 to 176 g/m2 (16 
to 47 lb bond) paper, use grain long fibers. 
Fiber content—Most high-quality xerographic paper is made from 100% chemically treated pulped wood. 
This content provides the paper with a high degree of stability resulting in fewer paper feeding problems 
and better print quality. Paper containing fibers such as cotton possesses characteristics that can 
negatively affect paper handling.
Unacceptable paper
The following paper types are not recommended for use with the printer:
Preprinted papers with chemicals that may contaminate the printer
Preprinted papers that can be affected by the temperature in the printer fuser
Coated papers (erasable bond), synthetic papers, thermal papers
Rough-edged, rough or heavily textured surface papers, or curled papers
Recycled papers containing more than 25% post-consumer waste that do not meet DIN 19 309, and 
weighing more than 80 g/m2 
Paper weighing less than 80 g/m2 (21 lb)
Multiple-par t forms or documents 
						

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Selecting paper
Using appropriate paper prevents jams and helps ensure trouble-free printing. To help avoid jams and poor print 
quality:
Always use new, undamaged paper.
Before loading paper, know the recommended print side of the paper. This information is usually indicated 
on the paper package.
Do not use paper that has been cut or trimmed by hand.
Do not mix paper sizes, types, or weights in the same source; mixing results in jams.
Do not use coated papers unless they are specifically designed for electrophotographic printing. 
Selecting preprinted forms and letterhead
Use these guidelines when selecting preprinted forms and letterhead:
Use grain long for 60 to 176 g/m2 weight paper.
Use only forms and letterhead printed using an offset lithographic or engraved printing process.
Avoid papers with rough or heavily textured surfaces.
Use papers printed with heat-resistant inks designed for use in xerographic copiers. The ink must be able to 
withstand temperatures up to 200°C (392°F) without melting or releasing hazardous emissions. Use inks that 
are not affected by the resin in toner. Inks that are oxidation-set or oil-based generally meet these requirements; 
latex inks might not. When in doubt, contact the paper supplier.
Preprinted papers such as letterhead must be able to withstand temperatures up to 200°C (392°F) without 
melting or releasing hazardous emissions.
Storing paper
Use these paper storage guidelines to help avoid jams and uneven print quality:
For best results, store paper where the temperature is 21°C (70°F) and the relative humidity is 40%. Most 
label manufacturers recommend printing in a temperature range of 18 to 24°C (65 to 75°F) with relative 
humidity between 40 and 60%.
Store paper in cartons when possible, on a pallet or shelf, rather than on the floor.
Store individual packages on a flat surface.
Do not store anything on top of individual paper packages.
Using recycled paper and other office papers
As an environmentally conscious company, Lexmark supports the use of recycled office paper produced 
specifically for use in laser (electrophotographic) printers. In 1998, Lexmark presented to the US government a 
study demonstrating that recycled paper produced by major mills in the US fed as well as non-recycled paper. 
However, no blanket statement can be made that all recycled paper will feed well. Lexmark consistently tests its 
printers with recycled paper (20–100% post-consumer waste) and a variety of test paper from around the world, 
using chamber tests for different temperature and humidity conditions. Lexmark has found no reason to 
discourage the use of todays recycled office papers, but generally the following property guidelines apply to 
recycled paper.
Low moisture content (4–5%)
Suitable smoothness (100–200 Sheffield units, or 140–350 Bendtsen units, European)
Note:  Some much smoother papers (such as premium 24 lb laser papers, 50–90 Sheffield units) and 
much rougher papers (such as premium cotton papers, 200–300 Sheffield units) have been engineered to 
work very well in laser printers, despite surface texture. Before using these types of paper, consult your 
paper supplier.
Suitable sheet-to-sheet coefficient of friction (0.4–0.6)
Sufficient bending resistance in the direction of feed 
						

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Recycled paper, paper of lower weight (
						

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Digital imaging specifications
General specifications
ADF Scan speed
Simplex ADF - Up to 25 ppm
Duplex ADF - Up to 35 ppm (page sides)
ADF Document handling
ADF input capacity - 50 sheets. 
ADF output capacity - 50 sheets.
ADF document width - 4.9’’ (125mm) to 8.5’’(216mm)
ADF document length - 5’’ (127mm) to 14.0”(356mm)
Resolution and color depth

Resolution - 1200 dpi optical
CDD 1200 dpi, and 600 dpi. Selectable through electronics
Color depth - 48 bit RGB output. 16 bit / channel
Flatbed document specifications

Document size- Up to A4 and letter
4.5’’ x 5.5’’ to 8.5’’x11’’ (SEF)
Flatbed speed
3 seconds to scan, 3 seconds to return.
Scanner operating environments

Temperature - 10C to 35C
Humidity - 15% RH to 85% RH
Storage environments 

Temperature - -20C to 43C
Humidity - 5%RH to 95% RH
Tilt
This device should operate within the stated parameters when it is level within 10mm from front to back and 
10mm side to side. 
						

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Scan and copy specific specifications
Scan Resolutions

Optical - 600 dpi (Local Twain only)
Enhanced (vial Lexmark Scan Center) - 1200 X 1200 dpi, 2400 X 2400 dpi, 4800 X 4800 dpi, 9600 X 9600 
dpi, 19200 X 19200 dpi
Output resolutions

Mono - 600 X 600 dpi
Color - 300 X 300 dpi
Duplex scan 
Duplex and copy is available only on X544 series machines.
Scan file output formats

TIFF
JPEG
PDF
Supported compressions

PDF - (1 bit,- JBIG2 CCIT G4, Flate), (8/24 bit - Flate JPEG)
TIFF - (1 bit - CCITT G4), (8/24 bit - Packbits, LZW)
JPG - (8/24 bit-JPG)
Supported scan destinations

Temporary profile from a user’s PC
Scan to PC via network TWAIN
Scan to PC using Web applet
Scan to E-Mail
Scan to USB (X544 models only)
Lexmark Scan Center
Multiple copies
999 copies maximum
Reduce / Enlarge
-25% to 400% 
						

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Fax specifications
Phone network connectivity
Fax resolutions
Miscellaneous FAX specifications
Phone networks types suppor ted PSTN or analog PABX (RJ-11)
ITU COMPATIBILITY
   Standard Resolution
   Fine
   Superfine
   Ultrafine
   CodingGroup 3/ECM
   8 x 3.85 pels/mm (200X100dpi) (204x98)
   8 x 7.7 pels/mm (200X200dpi) (204x196)
   11.8 x 11.8 pels/mm(300x300 dpi) (204x391)
   15.7 x 15.7 pels/mm   (400x400 dpi) (408x391)
   ITU T.4 and T.6(MH, MR, MMR, JPEG)
Modem speed V.34 2,400-33,600 BPS, 
V.17 7,200-14,400 BPS, 
V.27 2,400-4,800 BPS, 
V.29 7,200-9,600 BPS
Compression
MH, MR, MMR, JPEG
Error correction ITU T.30
Line interface selection
Modular Plug
   Out Band Signal LevelDual RJ-11C
   Guaranteed North American and Europe PTT standard
Input Level Range
    Ring Detection-16dBm ~ -59dBm
   Complies with all regulatory requirements
Receive200x100 dpi, 200x200 dpi, 300x300 dpi, 
400x400 dpi, 204x98 dpi, 204x196 dpi, 
204x391 dpi, 408x391 dpi
Send200x100dpi, 200x200 dpi, 300x300 dpi
Fax memory 4 MB Flash (More than 320 pages based on ITU chart #1)
User selectable parameters are stored in NVRAM.
Speed dial Yes. 999 entries
Transmission Approximately 3 seconds per page
Color fax Yes
Fax from PC Yes. Suppor ted using PostScript driver for both local and 
network attach modes.
Caller ID Yes
Junk FAX blocking Yes - based on caller ID and remote station ID
Tone/Pulse Tone: Default, Pulse: Yes
Fax forward Yes
Broadcasting Yes. 12 destinations
External phone interface Yes
Manual mode Yes
Fax shortcuts Yes. 
Fax content Text, text/photo, photo
Fax perseveration Yes
Halftoning Yes