Lexmark C 746 Service Manual
Have a look at the manual Lexmark C 746 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 166 Lexmark manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
General information1-1 5026 Go Back Previous Next 1. General information The Lexmark™ C746x and C748x family of color laser printers. Models Options Printer nameMachine type and modelDescription Lexmark C746n 5026-310 Network-ready Lexmark C746dn 5026-330 Network-ready with duplex Lexmark C746dtn 5026-330 Network-ready with duplex and 550 sheet tray Lexmark C748e 5026-510 Network-ready with etask touch screen Lexmark C748de 5026-530 Network-ready with etask touch screen and duplex Lexmark C748dte 5026-530 Network-ready with etask touch screen, duplex, and 550 sheet tray 1 2 3 4 5 6 7 8
1-2Service Manual 5026 Go Back Previous Next Note: Some configurations may require a caster base for stability. Media options The C746x and C748x printers support the 550-sheet drawer, special media drawers, and 2000-sheet high- capacity input tray. The C746x and C748x printers support up to four input options. The options can include any combination of 550 sheet drawers and 550 sheet Specialty Media Drawers, with a maximum of one 2000 sheet drawer (always at the lowest position.) A caster base is required with some configurations. Including the base machine capacity of 650 sheets, the C746x and C748x supports up to 4300 sheets. The Lexmark C74x options are compatible with the Lexmark C73x SFP, X73x MFP, and X74x MFP, but not with any other Lexmark printers. No other options are supported by the C74x. The media options include: •550-Sheet Drawer—This optional input source installs beneath the printer, and it holds approximately 550 sheets of (20 lb.) paper. •High Capacity Input Tray—This optional input source installs beneath the printer, and it holds approximately 2000 sheets of (20 lb.) paper. •Specialty Media Drawer—This optional input source installs beneath the printer, and it holds approximately 550 sheets of (20 lb.) paper, or 85 standard envelopes. Memory options •Additional memory card—The memory options for the C746x and C748x printers are 200 pin DDR2, SODIMM, and they are available at 256MB, 512MB, and 1GB sizes. •Flash memory card—Flash Memory cards are available in 256MB. •Hard disk—If larger storage is required, an optional hard disk is available. Number Description 1 Standard output bin 2 Paper support 3 Printer operator panel 4 Standard 550-sheet stray (Tray 1) 5 Multipurpose feeder 6 Optional 550-sheet specialty media drawer 7 Optional 550-sheet tray 8 Optional 2,000-sheet high.capacity feeder
General information1-3 5026 Go Back Previous Next Printer specifications Dimensions The following table contains the dimensions and weight for each of the respective printer models. This does not include packaging. Height Width Depth Weight Basic printer (C746n/dn) 454.7 mm (17.9 in)435.0 mm (17.1 in)400.0 mm (15.7 in)25.2 kg (55.6 lbs) Basic printer (C748e/de) 454.7 mm (17.9 in)435.0 mm (17.1 in)400.0 mm (15.7 in)25.6 kg (56.4 lbs) C746dtn printer, with 550-sheet optional drawer581.7 mm (22.9 in)435.0 mm (17.1 in)545.0 mm (21.5 in)29.7 kg (65.5 lbs) C748dte printer, with 550-sheet optional drawer581.7mm (22.9 in)435.0 mm (17.1 in)545.0 mm (21.5 in)30.1kg (66.4 lbs) 550-sheet drawer 169.0 mm (6.6 in)435.0 mm (17.1 in)545.0 mm (21.5 in)4.5 kg (10.0 lbs) 550-sheet special media drawer 169.0 mm (6.6 in)435.0 mm (17.1 in)545.0 mm (21.5 in)4.5 kg (10.0 lbs) 2000-sheet high capacity feeder 387.0 mm (15.2 in)435.0 mm (17.1 in)545.0 mm (21.5 in)26.1 kg (57.5 lbs) Spacer 169.0 mm (6.6 in)435 mm (17.1 in)545 mm (21.5 in)3.2 kg (7.0 lbs) Caster Base 127.0 mm (5.0 in)778 mm (30.6 in)812.0 mm (32.0 in)43.1 kg (95.0 lbs)
1-4Service Manual 5026 Go Back Previous Next Clearances Memory Number Description Clearance 1 Right side 101.6 mm (4 in.) 2 Front 609.6 mm (24 in.) 3 Left side 152.4 mm (6 in.) 4 Rear 152.4 mm (6 in.) 5 Top 304.8 mm (12 in.) C746 C748 Standard memory—The standard RAM is soldered onto the system board. Memory size 512MB 512MB Optional memory—Optional DIMM (Dual Inline Memory Module) is a card that can be plugged into an available memory slot on the system board. Flash memory is a card that can also be plugged into an available slot. Maximum number of memory (DIMM) slots 11 Maximum number of flash memory slots 11 DIMM memory sizes available 256MB, 512MB, 1024MB 256MB, 512MB, 1024MB Flash (Nand Flash) 256 256 Maximum possible memory 1536MB 1536MB 1 2 34 5
General information1-5 5026 Go Back Previous Next Expansion opportunities Resolution The following resolutions are available: •4800CQ (default resolution) •1200 x 1200 dpi (at reduced printer speed) Data streams •XPS •PCL 6 emulation (includes PCL 5e and PCL XL interpreters) •PostScript 3 emulation •PDF 1.6 •PPDS •PictBridge •HTML (including DBCS) •Direct Image (TIFF, TIF, JPEG, JPG, GIF, PNG, BMP, PCX, and DCX) Environment specifications Interface card expansion slots 1 Code Enhancement Socket (application solution firmware)2 Hard disk Interface (for optional hard disk)1 Environment Specifications Operating Air temperature—Operating 15.6° to 32.2° C (60° to 90° F) Air temperature—Power off 10° to 40° C (50° to 104° F) Air Relative Humidity Relative humidity 8% to 80% Wet Bulb Temperature—Operating 22.8° C (73.0° F) Maximum Web Bulb Temperature—Power off 26.7° C (80.1° F) Maximum Altitude 0–3,048 meters (10,000 ft.) Ambient Operating Environment* 15.6° to 32.2° C (60° to 90° F) and 8% to 80% RH Shipping and storage Cartridges (packaged) -40° C to 40° C (104° Fahrenheit) Printer with Cartridges (packaged) -40° C to 40° C (104° Fahrenheit) Printer without Cartridges -40° C to 40° C (104° Fahrenheit) Air Relative Humidity Relative humidity 8% to 80% Altitude 0–10,300 meters (34,000 feet)
1-6Service Manual 5026 Go Back Previous Next Electrical and power specifications The following table specifies nominal average power requirements for the basic printer configurations. All power levels are shown in Watts (W). Maximum current is given in Amperes (A). Low-voltage models •110 to 127 V at 50 to 60 Hertz (Hz) nominal •99 to 139.7 V, extreme •100 V at 50 to 60 Hertz (Hz) nominal •90 to 121 V, extreme High-voltage models •220 to 240 V at 50 to 60 Hz (not available in all countries) •198 to 259 V, extreme Notes: •Using a power converter or inverter with the Lexmark C740 Series printers is not recommended. •The C740 series duplex models (C746dn, C746dtn, C748de, C748dte) are Energy Star Qualified. •All models ship with Sleep Mode = On. •The default time out to Sleep mode is 30 minutes. Web Bulb Temperature—Power Off 26.7° C (80.1° F) Maximum * In some cases performance specifications, such as paper OCF and EP cartridge usage, are specified to be measured at an ambient condition. Printing states C746n/dn/dtn Lexmark C748e/de/dte Off 0W 0W Sleep mode 6.8W 7.3W Hibernate mode 0.55W 0.55W Ready Mode 48W 48W Simplex Printing 535W 535W Duplex Printing 420W 420W Typical Electricity Consumption Test 3.561 kwh / wk 3.687 kwh / wk Typical Electricity Consumption Test (Eco-Mode) 2.375 kwh / wk 2.491 kwh / wk Average current while printing (110 Volts)8.3 A 8.3 A Average current while printing (120 Volts)7.5 A 7.5 A Average current while printing (230 Volts)3.8 A 3.8 A Environment Specifications
General information1-7 5026 Go Back Previous Next Acoustic specifications All acoustic measurements are made in accordance with ISO 7779:1999—Accoustics: Measurement of airborne noise emitted by information technology and telecommunications and reported in conformance with ISO 9296: 1988-04-15—Accoustics Declared noise emission values of computer and business equipment. Operating mode1 meter average sound pressure (dBA)Declared sound power level (Bels) C746 Idle 32 dB 4.8 Bels Simplex printing (mono) 53 dB 6.8 Bels Simplex printing (color) 54 dB 6.8 Bels Duplex printing (mono) 54 dB 6.9 Bels Duplex printing (color) 55 dB 6.9 Bels Quiet mode printing (mono) 48 dB 6.3 Bels Quiet mode printing (color) 48 dB 6.3 Bels C748 Idle 32 dB 4.8 Bels Simplex printing (mono) 54 dB 6.8 Bels Simplex printing (color) 55 dB 6.9 Bels Duplex printing (mono) 53 dB 6.9 Bels Duplex printing (color) 55 dB 6.9 Bels Quiet mode printing (mono) 47 dB 6.3 Bels Quiet mode printing (color) 48 dB 6.3 Bels
1-8Service Manual 5026 Go Back Previous Next Media specifications Paper designed for use with xerographic copiers should provide satisfactory print quality and feed reliability. Other types of media may be suitable. It is recommended that users test any particular brand for suitability to their applications. Refer to the printer Users Guide for additional media specifications. Paper Follow the media guidelines below for successful printing: •Rough, highly textured, limp, or pre-curled papers will result in lower print quality and more frequent paper feed failures. •Colored papers must be able to withstand 190° C (374° F) fusing temperature. •Preprinted forms and letterheads must be able to withstand 190° C (374° F) fusing temperature and should be selected using guidelines found in the printer User’s Guide. The chemical process used in preprinting may render some papers unsuitable for use. •Unsuitable papers include: –Multi-part forms and documents –Chemically treated papers; coated –Synthetic and thermal papers –A5 paper less than 80 g/m2 (21 lb) –Recycled paper less than 75 g/m2 (20 lb) –Preprinted papers requiring a high degree of registration. –Recycled paper less than 80 g/m2 (21 lb) may cause unacceptable results. Envelopes • All envelopes should be new, unused, and without package damage. •Envelopes with excessive curl or twist exceeding 6 mm, those stuck together, those with bent corners or nicked edges, or those that interlock should not be used. •Minimum weight: 60 g/m2 (16 lb.) •The following envelopes should not be used: •Envelopes with windows, holes, perforations, cutouts, or deep embossing •Envelopes with metal clasps, string ties, or metal folding bars •Envelopes with exposed flap adhesive when the flap is in the closed position. •For best results, printing on new 90 g/m2 (24 lb.) sulfite or 25% cotton bond envelopes is recommended. •Under high humidity conditions (over 60%), envelopes may seal during printing. Transparencies • Use letter or A4-size transparencies for color laser printers only. •See Ordering Information for the recommended transparencies for the Lexmark C746x/C748x laser printers. •Do not use inkjet transparencies. Labels Labels should be selected using guidelines found in the Users Guide or the Card Stock and Label Guide, and tested for acceptability.
General information1-9 5026 Go Back Previous Next Using recycled paper and other office papers Recycled office paper produced specifically for use in laser (electrophotographic) printers may be used in your printer. However, no blanket statement can be made that all recycled paper will feed well. 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 Recycled paper, paper of lower weight (
1-10Service Manual 5026 Go Back Previous Next Input and output capacities The following table describes the media options that each model supports, and the estimated capacities in stand and maximum configurations. Capacity may vary and is subject to media specifications and printer operating environment. The capacities are based on plain paper at 75g/m 2. Standard input sources Primary tray capacity (sheets) 550 Multipurpose feeder capacity (sheets) 100 Number of standard sources (primary tray and multipurpose feeder)2 Total standard capacity (sheets) 650 Optional input sources 550-Sheet Drawer (sheets) 550 High-capacity input tray (HCIT) (sheets) 2,000 Specialty Media Drawer a (sheets) 550 (or 85 envelopes) Maximum number of 550-sheet drawers (including Speciality Media Drawer)4 Maximum number of high-capacity input tray (must be installed on the bottom)1 Maximum number of standard and optional input sources6 Maximum capacity for standard and options input sources (sheets)4,300 Standard output bin capacity (sheets) b 300 Maximum output bin capacity (sheets) 300 Duplex capability Standard for C746dn,C746dtn,C748de,and C748dte models aEach 550-sheet Specialty Media Drawer replaces one 550-sheet option. bThe output bin capacity may be reduced by 50 sheets when the duplex feature is in use.