Lexmark CS720, CS725, CX725 & C4150, XC4150 Study · PDF fileThe chart below outlines the naming convention of Lexmark Laser Printers based on a 5-digit identifier. ... Scan Enhancements

Lexmark CS720, CS725, CX725 & C4150, XC4150 Product Study Guide

Lexmark Product Study Guide 2 V1.1

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Edition: February 2016 Revision: 1.1 Authors: Alain Peter Lim; Katherine Roberts The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL, INC., PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time. References in this publication to products, programs, or services do not imply that the manufacturer intends to make these available in all countries in which it operates. Any reference to a product, program, or service is not intended to state or imply that only that product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any existing intellectual property right may be used instead. Evaluation and verification of operation in conjunction with other products, programs, or services, except those expressly designated by the manufacturer, are the user’s responsibility. Trademarks Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries. PCL® is a registered trademark of the Hewlett-Packard Company. All other trademarks are the property of their respective owners. © 2016 Lexmark International, Inc. All rights reserved.


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TABLE OF CONTENTS

Laser Printer Naming Convention .................................................................................................................................. 6 Product Model Overview ............................................................................................................................................... 7 TLI, Type and Serial Number Location ........................................................................................................................... 9 New Feature Highlights ............................................................................................................................................... 10

Operator Panel ........................................................................................................................................................ 10 LCD Resolutions ....................................................................................................................................................... 10 Accessibility ............................................................................................................................................................. 10 Firmware Functions ................................................................................................................................................. 11 Other Key Features .................................................................................................................................................. 13

Hardware Configuration .............................................................................................................................................. 14 Single-Function Products (CS720/CS725) ................................................................................................................ 14

Base Printer ......................................................................................................................................................... 14 Base Printer with Options .................................................................................................................................... 14

Multi-Function Product (CX725) .............................................................................................................................. 15 Base Printer with Options .................................................................................................................................... 15 Base Printer ......................................................................................................................................................... 15

Options: CS720, CS725, CX725 .................................................................................................................................... 16 Input Options ........................................................................................................................................................... 16 Furniture Options .................................................................................................................................................... 16 Electronic Options ................................................................................................................................................... 17

Supplies: CS720, CS725, CX725 .................................................................................................................................... 18 Toner Cartridges, Developer Unit, Imaging Kit ........................................................................................................ 18

Theory of Operation .................................................................................................................................................... 20 Electrophotographic Process ................................................................................................................................... 20

Flowchart ............................................................................................................................................................. 20 Key Components .................................................................................................................................................. 20 Basic Concept of EP Process ................................................................................................................................ 21

Paper Path and Transport Components .................................................................................................................. 26 Tray Section ......................................................................................................................................................... 26 MPF Section ......................................................................................................................................................... 26 Isolation Unit Section ........................................................................................................................................... 27 Registration Section ............................................................................................................................................. 28 Fuser Section ....................................................................................................................................................... 29 Duplex Section ..................................................................................................................................................... 29

Menu Tree and Access ................................................................................................................................................. 31 CS720, CS725 Customer Menu ................................................................................................................................ 31

Lexmark Product Study Guide 6 V1.1 CS720de

CX725 Customer Menu ............................................................................................................................................ 32 CS720, CS725 & CX725 Service Menus .................................................................................................................... 33

Print Quality Diagnostic Tips ........................................................................................................................................ 35 Paper Orientation .................................................................................................................................................... 35 General Print Quality Hot Tips and Tricks ................................................................................................................ 36

Complex Parts and Procedures .................................................................................................................................... 37 Guidelines ................................................................................................................................................................ 37 Controller Board / Secure Element SIM Card .......................................................................................................... 38 Control Panel ........................................................................................................................................................... 38 Control Panel Cable / Output Roll ........................................................................................................................... 38 HVPS ........................................................................................................................................................................ 38 Imaging Basket ......................................................................................................................................................... 38 Laser (Printhead) ..................................................................................................................................................... 38 LVPS Cage / Deskew Roll .......................................................................................................................................... 38 Scanner ADF / Flatbed ............................................................................................................................................. 39 TPS Sensor ............................................................................................................................................................... 39 Transfer Module ...................................................................................................................................................... 39

Major Components Location ....................................................................................................................................... 40 Enhanced Wiring Diagram ........................................................................................................................................... 41 Acronyms & Terms ...................................................................................................................................................... 42

LASER PRINTER NAMING CONVENTION The chart below outlines the naming convention of Lexmark Laser Printers based on a 5-digit identifier.


Model: Identifies the specific model within a class and generation Gen: Generation of product introduced in the class Class: The higher the number, the greater level of performance and duty cycle ‘S’ for Single-Function and ‘X’ for Multifunction ‘C’ for Color and ‘M’ for Monochrome

PRODUCT MODEL OVERVIEW

SUFFIX CONVENTION n Network d Duplex e eTask h Hard Drive x High Capacity Input Tray f Finisher

m Mailbox t Tray p Hole Punch


PRODUCT MODEL LEXMARK CS720 LEXMARK CS725 C4150

LEXMARK CX725 XC4150

FUNCTIONS Print Print Print, Copy, Scan, Fax

PROCESSOR SPEED 1.2GHz Quad Core 1.2GHz Quad Core 1.2GHz Quad Core

LCD 4.3-inch Color Touch-Screen Display

4.3-inch Color Touch-Screen Display

7-inch Color Touch-Screen Display

CONNECTIVITY Standard 10BASE-T / 100BASE-TX / 1000BASE –T, USB-B 2.0 High Speed

PRINT SPEED Letter, Tray 1

Simplex: 40 PPM Duplex: 32.6 SPM



PRINT SPEED A4, Tray 1




DUTY CYCLE (Monthly Maximum) 120K pages 150K pages 150K pages

TTFP Time from Ready Mode

Mono: 6 seconds Color: 6.5 seconds



SECURE ELEMENT SIM CARD Optional Optional Optional

FUSER TYPE Instant-On Instant-On Instant-On

SCANNER TYPE Color Flatbed Scanner with

Re-circulating Automatic Document Feed (RADF)

SCAN TECHNOLOGY Charge Coupled Device (CCD)

ADF TYPE Duplex (RADF – Re-

circulating Automatic Document Feeder)

SCAN SPEED (MONO & COLOR) Letter / A4

Simplex: 40 PPM / 37 PPM Duplex: 20 SPM / 18 SPM

FLATBED RESOLUTION TBD

ADF RESOLUTION TBD

TTFC (ADF & FLATBED) Black / Color Letter & A4: 5.5 sec / 6 sec


TLI, TYPE AND SERIAL NUMBER LOCATION The Top Level Indicator (TLI), Machine Type and the Serial Number are printed on a sticker label located at the lower left corner when the front door is open.

TLI, Machine Number, Serial Number


NEW FEATURE HIGHLIGHTS

Operator Panel Touch sensitive graphical user interface plus “hard” buttons (including the sleep/ hibernate button), soft

power, and one status indicator LED 4.3”, 7.0” diagonal Color LCD Touchscreen Headset jack and volume control CS720 series printers have the operator panel located on the front of the device, and has a fixed position CX725 series MFP’s have the operator panel located on the front of the device, and has an infinite

position tilt mechanism. The positions range between 35° to 90° from horizontal.

LCD Resolutions

480x272 pixels 4.3-inch Color Touch-Screen Display

800x480 pixels 7-inch Color Touch-Screen Display

Accessibility

Voice Navigation

The new operator panel hardware and software support Voice Navigation. Users can navigate by swipe or by use of optional keyboard and receive voice guidance in a number of languages for navigation and error notification. Note: These products do not support “explore by touch” which reads the name of the item under the current touch point. (Available in a firmware upgrade mid 2016).

eSF

Expanded list of optional eSF apps support Voice Navigation (mid 2016).

Raised Icons

Several physical buttons (Start, Stop, Home, Power, Cancel, Pause, and Backspace) now include raised icons for easier identification

Headphone jack

Headphone jack and volume control buttons on front panel.

Paper Tray

Easier paper tray size adjustment.

Lexmark Accessibility Solution (LAS)

The CX725 products will support LAS. This enables a user to use a web browser at their workstation or mobile device to create a job ticket using their existing assistive technology such as a screen reader, screen magnifier, or voice recognition software.


Firmware Functions (At Product Launch)

Usability

Panel UI • Gen5 UI • Compelling new UI, alignment with modern user experiences • Multi-touch capable operator panel • Remote Op Panel via standard VNC clients

EWS redesign • Consistency of use • Easier device configuration • WCAG 2.0 accessibility

Settings report displaying only changed (non-default) settings

Wireless Setup Wizard – in network setup Admin menus

Scan Enhancements

OCR (excluding DBCS)

Note: Standard on CX725dhe/dthe models, optional on CX725de

Improved Electronic Deskew (up to 40ppm) Smart Image Pipe architecture

• Improved speed for page-level jam recovery • Full speed mixed originals • Auto color detect for scans (Email, FTP, etc.)

Note: Available in firmware upgrade mid-2016

Security Enablement

Role based access controls • Ease of use for user access control

Breach mitigation

• Moving processes off of root (emulators, network, security) Lexmark Secure Element SmartCard

• Protect encryption keys for hard disk • Protect device certificates • Provide true random number generation to meet next-gen FIPS and CC

requirements • Customer-installable option

Unified integrated Address Book • Common admin management for internal & eSF app contacts • Configuration via EWS • Supports Device Quotas app

Common Criteria certification PKI/SCAC support

Solutions Enablement

Embedded OCR with CX725dhe/dthe only • Performance improvements • Improved accuracy • Better accessibility via enhanced PDF output

Embedded MRC (WC Equivalent)


Folder Browse support

AccuRead Automate support • Incremental enhancements over WC EC4.x

Service & MPS-Enablement

Mirroring of all licenses

Keystone – Supplies Analytics • Functional parity with previous generation EC5 • Enhanced information available in new

architecture/implementation

Predictive/Proactive Management • Functional parity with Winner’s Circle EC5 • Healthcheck for color print engines and scanner • Ability to push Healthcheck data

Diagnostics Menu available from Ready state

• Available in initial firmware release ; (Enhancements in mid-2016)

Printing

iSys document filter support • Directly print MS Office documents from thumb-drive and pull-

print No automatic format sniffing on data ports

PFOs (DLEs)

• FormsMerge, BarCode, Prescribe available at GA • IPDS available 3/16/16 • Secure Forms support will be available in mid-2016

Microsoft Web Services support for Windows 8.1/10

Connectivity

Serial ISP

Wireless ISP at 2.4 and 5GHz

Dynamic NFC • Similar to static tag (read-only) but reprogrammable by device • Allows for new data to be presented to mobile devices in the

future

Mobile Enablement

Airprint V1.4 • More rigorous Apple certification (scan, USB, fax)

Mopria 1.2

• Print only • Emerging industry standard, specs being developed for cert

process

Google Cloud Print 2.0 support • Firmware and eSF App combination


Other Key Features

Fuser Low energy usage and fast time to first page.

New Pick System Improve reliability, Broad range of media supported from standard trays.

Customer Usability Intense customer-focus: Clear messaging, estimated pages remaining, tray stops.

New processor Faster processing time to improve overall performance

Touch Screen Neonode technology and eSF enabled for authentication and solutions.

Lexmark Secure Element

Available on all models. Adds higher level of security.

Modular Design Modular in design so that any component that fails may be replaced.


Multipurpose Feeder

Standard 550-Sheet Tray

Standard Bin

Control Panel

Base Printer

Base Printer with Options

Optional 550-Sheet Tray

Adjustable Printer Stand

HARDWARE CONFIGURATION

Single-Function Products (CS720/CS725)


Multi-Function Product (CX725)

Base Printer with Options

Base Printer

Optional 550-Sheet Tray

Swivel Cabinet

Standard Bin

Control Panel

Automatic Document Feeder

Flatbed Scanner

Multipurpose Feeder (MPF)

Standard 550-Sheet Tray


OPTIONS: CS720, CS725, CX725

Input Options

550 – Sheet Tray This optional input source installs beneath the printer, and it holds approximately 550 sheets of (20 lb.) paper. Multiple optional Trays are supported simultaneously.

Furniture Options

Adjustable Printer Stand This stand adds safety, support, and movement to CS720/CS725/CX725 configured with multiple input sources.

Swivel Cabinet This swivel cabinet has a top with detent positions that hold it in the proper front- or rear-facing position yet can rotate 90 degrees to facilitate access to the printer’s rear paper path.


Electronic Options Application Solutions

Forms and Bar Code Card Using this card, solution providers can build powerful printing applications to convert existing data into a modern, stylish form containing variable text, images and industry standard bar codes. Card for IPDS This provides configuration flexibility and compatibility for AFP/IPDS printing on TCP/IP LAN printers. PRESCRIBE Card It enables the device to understand print and data formatting instructions sent in PRESCRIBE commands.

Connectivity Options

Built-In Connectivity The device is ship with 10/100/1000 Base TX Ethernet onboard the controller card and a USB-B 2.0 High-speed device port in back of the printer. It also include (1) USB-A 2.0 High-Speed host port on the front of the device and (1) USB-A 2.0 High-Speed host port on the back of the device. Direct USB Printing and Scanning Direct USB connectivity allows individuals to print files directly to the Printer/MFP or scan files directly from the MPF, using an approved USB flash memory device.

Memory Options

DDR3 The device uses DDR3 (Double Data Rate Type Three) DRAM memory options. The device not compatible with the DDR1 or DDR2 memory options used in previous generations.


SUPPLIES: CS720, CS725, CX725

Toner Cartridges, Developer Unit, Imaging Kit

Cyan, Magenta, Yellow (CMYK) Toner Cartridges Contains toner only and considered a CRU.

Developer Unit Imaging mechanism that turns the electrostatic charge on a photoconductor drum into an image.

Imaging Unit Color-specific replaceable mechanism that includes a photoconductor unit, developer unit, and initial toner load.

Imaging Kit Imaging units or developer units sold together in a "basket".

Waste Toner Bottle This bottle serves as receptacle or container for excess toner.


Supply Item Average Yield, In Pages

Ships with Devices

Non-Return Program Aftermarket Version

Compatibility

Return Program Aftermarket Version

Compatibility

Black, Cyan, Magenta, Yellow SWE Cartridge Up to 30001 CS720 N/A N/A

Black, Cyan, Magenta, Yellow SWE Cartridge Up to 70001 CS725, CX725 N/A N/A

Black, Cyan, Magenta, Yellow Cartridge Up to 30001 No No CS720, CS725, CX725

Cyan, Magenta, Yellow, Black Toner Cartridge Up to 70001 No CS720 CS720, CS725, CX725

Cyan, Magenta, Yellow High Yield Toner

Cartridge Up to 120001 No CS725 CS725

Black High Yield Toner Cartridge Up to 200001 No CS720, CS725 CS720, CS725

Cyan, Magenta, Yellow High Yield Toner

Cartridge Up to 160001 No CX725 CX725

Black High Yield Toner Cartridge Up to 260001 No CX725 CX725

Cyan, Magenta, Yellow, Black Developer Unit3 Up to 1500002 Yes

(1 ea CMYK) Yes Yes

Cyan, Magenta, Yellow Developer Unit3 Up to 1500002 No Yes No

Color Developer Kit3 Up to 1500002 Per Developer Unit No Yes Yes

Black Imaging Unit3 Up to 1500002 No Yes Yes

1 Average continuous cartridge black or continuous composite CMY declared cartridge yield up to this number of standard pages in accordance with ISO/IEC 19798. Actual yield will vary considerably based upon many factors. See www.Lexmark.com/yields for more info. 2 Developer and Photoconductor Estimated Yields are based on 3 average Letter/A4-size pages per print job at approximately 5% coverage. Actual Yield may vary considerably based on other factors such as device speed, paper size and feed orientation, toner coverage, tray source and average print job complexity. 3 Developer Units are available as single units for Cyan, Magenta, Yellow, and Black, or in a Color Developer Kit, containing 3 developer units: Cyan, Magenta, and Yellow. For more information see Section 11, Ordering Information.


THEORY OF OPERATION

Electrophotographic Process The process or method that all laser and LED printers use to print on media is called the electrophotographic process. This is done using various differential electric charges (static electricity) to manipulate and move toner from the cartridge to the printed page. While the basic EP Process is the same for every laser and LED printer, the specifics for each printer are different.

Flowchart

Key Components

Toner Cartridges

Fuser

Photoconductor Charge Roller

Developer Roll Printhead

Transfer Belt 2nd Transfer Roller 1st Transfer Roller

CHARGE

IMAGING UNIT

TRANSFER BELT

PAPER

START

END

EXPOSE

DEVELOP

CLEAN

1ST TRANSFER 2ND TRANSFER

CLEAN

FUSE


Basic Concept of EP Process In the color laser printing process, Cyan (C), Magenta (M), Yellow (Y), and Black (K) colors are precisely layered to create thousands of other colors. This printer has four photoconductors built into the print cartridges and transfer module. Each color toner is painted to its respective photoconductor at the same time. The transfer belt passes under the four photoconductors and the four-color image is produced and transferred to the paper in one pass. The controller board is the command center for the EP process and coordinates the various motors and signals. It receives print data and print command then initiates the print process. The high-voltage power supply (HVPS) sends charge to various components in the EP process. The laser fires on the photoconductors and alters the surface charge relative to the planed image for each photoconductor. Each photoconductor rotates past its respective developer roll, and toner is developed on the surface of each photoconductor. The four separate color images are then transferred to the transfer belt on the transfer module as it passes under the photoconductors. After the image is transferred to the transfer belt, the photoconductors are cleaned and recharged. The transfer belt carries the four-colored image towards the transfer rolls. Paper is picked up from the tray and carried to the transfer roll where the image is transferred from the transfer belt to the paper. The timing of the paper pick is determined by the speed of the transfer belt. The paper is carried to the fuser rollers where heat and pressure are applied to the page to permanently bond the toner to the page. The fuser rollers push the paper into the output bin. The transfer unit is cleaned and the process begins again for the next page. During printing process, the printer follows the six (6) basic EP process steps to create its output to the page: STEP 1 Charge

Charge the photoconductor. The high-voltage power supply (HVPS) sends voltage to the charge roller beside each of the four photoconductors. In this printer, the charge roll is part of the photoconductor unit in the print cartridges. The charge roller puts a uniform negative charge over the entire surface of the photoconductor to prepare it for the laser beam.

Charge Roller

Photoconductor


STEP 2 Expose

Expose the photoconductor with the laser. During the expose step, the laser fires a focused beam of light at the surface of each photoconductor and writes an invisible image, called a latent image or electrostatic image, for each color. The laser beam only discharges the surface where the beam hits the photoconductor. This creates a difference in charge potential between the exposed area and the rest of the photoconductor surface. STEP 3 Develop

Develop toner on the photoconductor. The high-voltage power supply (HVPS) sends charge to the developer roll when the laser exposes the photoconductor. For each color, the print cartridge engages the photoconductor so it is in contact with the surface. The charge difference between the toner on the developer roller and the electrostatic image created by the laser, the toner is attracted to areas of the photoconductor surface exposed by the laser.

Laser beam

Photoconductor

Toner Cartridges Developer Roll

Photoconductor


STEP 4a First Transfer

First transfer to the transfer module. When the latent images are developed on each photoconductor, the high-voltage power supply (HVPS) sends voltage to the 1st transfer rollers inside the transfer module. The charge difference between the developed toner image on the photoconductor surface and the 1st transfer roller causes the images to transfer to the surface of the transfer module belt for each color. This takes place by a direct surface-to-surface contact between the photoconductors and the transfer module transfer belt. STEP 4b Second Transfer

Second transfer to the paper. When the four planes of color are transferred to the transfer belt from the photoconductors, the image is carried toward the transfer roll, which is also part of the ITU. Based on the speed of the transfer belt, the proper time to

Photoconductor

1st Transfer Roller

Transfer Belt

Transfer Belt

2nd Transfer Roller


send the signal to pick the paper from an input source is determined. The pick is timed so that the paper passes between the transfer belt and transfer roll when the image on the belt reaches the second transfer area. The HVPS sends voltage to the transfer roll to create a positive charge. When the image on the transfer belt reaches the transfer roll, the negatively charged toner clings to the paper and the entire image is transferred from the transfer belt to the paper. STEP 5 Fuse

Fuse the toner to the paper. The transfer roll helps move the paper into the fuser area when the image has been fully transferred to the paper. The fuser applies heat and pressure to the page to melt the toner particles and bond them permanently to the paper. The fuser moves the paper to the re-drive rolls which move the paper to the output bin.

Fuser


STEP 6 Clean / Erase

Clean/Erase the photoconductor and the transfer module. There are two main cleaning processes that take place during the EP Process. One process cleans the photoconductors, and the other cleans the transfer belt. Photoconductor clean/erase A cleaning blade scrapes the remaining toner from the surface of each photoconductor after each plane of color has been transferred to the transfer belt from the photoconductors. This clean/erase cycle happens after each plane of color is transferred to the transfer belt. Transfer unit clean The transfer belt rotates around and is cleaned by the cleaning blade when the toner image on the transfer belt has been transferred to the page. The excess toner is then moved to the waste toner area using an auger system. This occurs for every page that is printed.

Cleaning Blade (Photoconductor)

Cleaning Blade (Transfer Belt)


Paper Path and Transport Components In the process of printing an image, the paper or specialty media has to travel from an input source (such as a tray) into the printer and exits through an output bin.

Tray Section Paper size and detection The tray has two adjustable paper guides that can be locked to position:

Paper Length Guide - This can be adjusted to accommodate different paper sizes by moving it to the front or rear of the tray. This guide should come into contact with the paper and hold it in position.

Paper Width Guide - It is designed to adjust to the paper width by moving the guide to the left or right. The tray also has sensors:

Sensor (550-sheet tray empty) - detects paper Sensor (550-sheet tray paper size) - detects the size of paper

Paper lift The sensor (pick roller position) determines if the lift plate in the paper tray is at the optimum position for paper to be properly picked. As paper is fed out, clearance occurs between the paper and the pick rollers. When the sensor determines the specified amount of clearance, the lift plate is raised to position the paper in the optimum position to be picked properly. Paper pick The pick roller assembly is a mechanical unit supplying paper from the tray to the paper path. Three motors move the paper from the tray to the transfer module at the second transfer station. The driving force from the motor (EP drive) is transmitted to the two pick rollers to feed paper from the tray and is also used to lift the tray plate that is used to lift the paper stack into contact with the pick rollers. When the image is on the belt, a signal is sent to the printer to pick a sheet of paper. The sensor (550-sheet tray empty) detects if there is paper present in the tray. If paper is present, the media feeder drives the pick roller which moves the paper from the tray to the isolation unit.

MPF Section If paper is present, the MPF has a sensor (MPF empty) detects. The motor (duplex/MPF) drives the MPF pick assembly. The pick assembly feeds the paper from the MPF tray into the printer through the sensor (duplex/MPF input) and isolator nip at tray 1. The paper is then transported to the isolation unit.


Isolation Unit Section Through one of two nips from tray 1 or the duplex/MPF path, the paper enters the isolation unit. The paper is moved through the tray 1 buffer to align the roller and sensor (input) if the paper is fed from tray 1. If the paper is fed from either the duplex or MPF sections, the paper is moved through the duplex/MPF isolation rollers and sensor (duplex/MPF input). The motor (isolation) located in the isolation unit drives the rollers. Note:

241.16 - If paper does not reach the input sensor 240.16 - If paper does not reach the duplex/MPF input sensor

Sensor (Duplex/MPF input) Duplex/MPF Isolation Roller

MPF Pass-Through Roller

Sensor (MPF empty)

MPF Pick Assembly


Registration Section A count is started after the paper reaches the sensor (input), or the sensor (duplex/MPF input). The paper is pushed up against the registration rollers to straighten out the leading edge of the paper and form a bubble. After a predetermined count from the sensor (input) is reached, the motor (registration) turns and moves the paper through the registration rollers and the sensor (input). The sensor (input) detects the leading edge of the paper and determines the timing from the registration rollers to the second transfer area, ensuring the proper placement of the image on the paper. Based on the position of the paper in the paper path, the transfer belt speeds up or slows down to ensure that the paper and image come together at the correct time at the second transfer nip. The image is then transferred from the belt to the right position on the paper in the second transfer area.

Sensor (input) Sensor (duplex/MPF input)

Tray 1 Buffer to Align Roller Duplex/MPF Isolation Roller

Transfer Belt

Sensor (input)

Registration Roller

Transfer Roller


Fuser Section The paper is fed to the fuser after the second transfer. The paper passes through the sensor (fuser buckle) located before the fuser. The sensor detects the buckle in the paper when it hits the fuser rollers. If the buckle is too great, the motor (fuser) speeds up to avoid causing a paper jam. If the buckle is too small, the motor slows to avoid smearing the image. At the same location, the sensor (narrow media) is also present. The sensor (narrow media) detects whether narrow paper is being passed through. Depending on the width of the paper detected, a process speed change, fuser temperature change, and print speed change occurs to avoid damaging the fuser. The paper then passes through the fuser where heat and pressure are applied to melt the toner particles and bond them permanently to the paper. As the paper leaves the fuser, the paper passes through the sensor (fuser exit). The sensor (fuser exit) detects fuser wraps and helps prevent wraps to go completely around the belt. The paper then moves through the decurl rollers and passes through the sensor (paper exit). If the print job is one-sided, the paper is passed through the exit rollers and into the output bin. If the print job is duplex, the paper is passed through the exit rollers and then retracted into the duplex path after the trailing edge passes through the sensor (paper exit) actuator.

Duplex Section The diverter drops and the motor (output) engages in reverse after the first side of the paper is printed and the trailing edge of the paper clears the diverter. The output roller turns in reverse to retract and feed the paper into the duplex path. The paper goes through the sensor (duplex entry) where the new leading-edge position of the paper is determined. The paper is then moved to the first duplex paper path nip (duplex bottom turn nip) through the three duplex aligner rollers. The duplex aligner rollers are driven by the motor (duplex/MPF) which continuously adjusts its speed as the paper passes through the duplex path to achieve the desired belt image offset at the aligner. After the paper passes through the three aligner rollers, the paper reaches the sensor (duplex staging) where the leading edge of the paper is updated.

Sensor (Bin Full) Exit Roller

Sensor (Fuser Buckle) / Sensor (Narrow Media)

Sensor (Fuser Exit)

Sensor (Paper Exit) / Sensor (Duplex Entry)

Fuser Decurl Roller


The duplex aligner roller drives the paper through the isolation nip and to the sensor (duplex/MPF input) where the leading-edge position of the paper is again updated after passing the sensor (duplex staging). When the paper reaches the sensor (duplex/MPF input) in the isolation unit, the paper is pushed to the registration rollers. As the paper reaches the sensor (input) after the registration process, the motor (registration) adjusts its speed to line up the leading edge exactly with the belt image at the second transfer. After the paper passes through the registration rollers, it goes through the transfer and fusing process again. The paper is then passed through the exit roller and moved to the output bin.

Output Roller

Duplex Aligner Roller

Sensor (Bin Full) Sensor (Duplex Entry)

Sensor (Duplex Entry)

Duplex Aligner Roller

Sensor (Duplex/MPF Input) Duplex Buffer Aligner Roller

Registration Roller Sensor (Input)


MENU TREE AND ACCESS

CS720, CS725 Customer Menu

* Note: This setting appears only when an optional card is installed.

Device•Preferences•Notifications•Group Lists•Alert Types•Anti-Spam Logic

Description•Suppressing

Duplicate Alerts•Power Management•Information Sent to

Lexmark•Accessibility•Restore Factory

Defaults•Maintenance •Remote Operator

Panel•Visible Home Screen

Icons•Site Map•Update Firmware•About This Printer

Print•Layout•Finishing•Setup•Quality•Job Accounting •Image•XPS•PDF•HTML•PostScript•PCL•PPDS

Paper•Tray Configuration •Media Configuration•Bin Configuration

Network/Ports•Network Overview •Wireless•AirPrint•Ethernet•TCP/IP•IPv6•SNMP•802.1x•IPSec•LPD Configuration •HTTP/FTP Settings•ThinPrint•USB•Parallel [x]•Serial•Wi-Fi Direct

USB Drive•Flash Drive Print

Security•Login Methods•Certificate Management •Schedule USB Devices•Security Audit Log•Login Restrictions •Confidential Print Setup •Disk Encryption•Erase Temporary Data Files •Solutions LDAP Settings•Miscellaneous

Option Card Menu* Reports

•Menu Settings Page•Print Quality Pages•Device•Print•Shortcuts•Network

Help

•Print All Guides•Color Quality Guide•Connection Guide•Information Guide•Media Guide•Moving Guide •Print Quality Guide


CX725 Customer Menu

* Note: This setting appears only when an optional card is installed.

Device• Preferences• Notifications• Group Lists• Alert Types• Anti-Spam Logic

Description• Suppressing Duplicate

Alerts• Power Management• Information Sent to

Lexmark• Accessibility• Restore Factory Defaults• Maintenance • Remote Operator Panel• Visible Home Screen Icons• Site Map• Update Firmware• About This Printer

Print• Layout• Finishing• Setup• Quality• Job Accounting • Image• XPS• PDF• HTML• PostScript• PCL• PPDS

Paper• Tray Configuration • Media Configuration• Bin Configuration

Copy• Copy• Defaults

Fax• Fax Mode• Analog Fax Setup• Fax Server Setup

Email• Preferences• Notifications• Group Lists• Alert Types• Anti-Spam Logic

Description• Suppressing Duplicate

Alerts• Power Management• Information Sent to

Lexmark• Accessibility• Restore Factory Defaults• Maintenance • Remote Operator Panel• Visible Home Screen

Icons• Site Map• Update Firmware• About This Printer

FTP• Layout• Finishing• Setup• Quality• Job Accounting • Image• XPS• PDF• HTML• PostScript• PCL• PPDS

Network/Ports• Network Overview • Wireless• AirPrint• Ethernet• TCP/IP• IPv6• SNMP• 802.1x• IPSec• LPD Configuration • HTTP/FTP Settings• ThinPrint• USB• Parallel [x]• Serial• Wi-Fi Direct

USB Drive• Flash Drive Scan• Flash Drive Print

Security• Login Methods• Certificate Management• Schedule USB Devices• Security Audit Log• Login Restrictions• Confidential Print Setup• Disk Encryption• Erase Temporary Data

Files• Solutions LDAP Settings• Miscellaneous

Option Card Menu* Reports• Menu Settings Page• Print Quality Pages• Device• Print• Shortcuts• Fax• Network

Help• Print All Guides • Color Quality Guide• Connection Guide• Copy Guide• E-mail Guide• Information Guide• Media Guide• Moving Guide• Print Quality Guide• Scan Guide • Supplies Guide


CS720, CS725 & CX725 Service Menus

DIAGNOSTIC MENU

This menu contains advanced settings and operations used for repair, adjustments, and other diagnostic actions. **New for the 2015 e-Task Printers – you can access Diagnostics directly from the Customer Menus (see Method 2) or the traditional way.

To access Diagnostic Menu: Method 1 – POR 1. Turn OFF the printer.

2. Press and hold 3 and 6 simultaneously.

3. Turn ON the printer.

4. Release the buttons when the splash screen appears.

Method 2 – No POR 1. From the Home screen press * * 3 6

CONFIGURATION MENU

This menu contains a set of settings and operations which are infrequently required by a user. Generally, the options made available in this menu group are used to configure a printer for operation. **New for the 2015 eTask Printers – you can access Configuration Menu directly from the Customer Menus.

To access Configuration Menu:

1. Go to Settings > Device > Maintenance > Configuration Menu

INVALID ENGINE MODE

This mode is used if the machine has invalid code and needs the correct code loaded. After entering this mode, the firmware code can be updated.

To enter Invalid Engine Mode: 1. Turn OFF the printer.

2. Press and hold 3, 4 and 6 simultaneously.


4. Release the buttons after 10 seconds.


RECOVERY MODE

This mode will allow the printer to boot from a secondary set of instructions to allow a code flash to the printer. Code can be flashed from a PC by USB.

To enter Recovery Mode: 1. Turn OFF the printer.




SAFE MODE (EVERREADY MODE)

This mode will allow the printer to temporarily have minimal print capabilities. In this mode, the printer can only do the following:

Only do simplex jobs

Ignore the duplex sensor and bin full sensor

Ignore all input options except Tray 1 and MP Feeder

Ignore staple function

Ignore fold function

To enter Safe Mode: 1. Turn OFF the printer.




SERVICE ENGINEER (SE) MENU

This menu contains settings for fine tuning settings, reporting and other advanced features.

To access SE Menu: Method 1 1. From the Home screen press * * 4 1 Method 2

1. Navigate to Networks/Ports > Standard Network > Standard Network Setup.

2. Press and hold 6, 7, and 9 simultaneously.

Method 3

1. In a web browser on a host PC, add “/se” to the printer IP address.

Example: http://158.183.3.2/se


PRINT QUALITY DIAGNOSTIC TIPS

Paper Orientation Before diagnosing print quality problems, take a moment to understand the concepts below. This will prevent confusion when diagnosing or escalating a problem.

• Know your paper orientation when diagnosing a print quality issue. References to direction such as horizontal and vertical must be made holding the paper in portrait orientation (long edges to the left and right) with the printed side facing you. Don’t hold the paper in landscape orientation.

• Know the direction of the print when diagnosing a print quality issue. References to the “Process” or the

“Scan” direction refer to the direction in which the paper travels through the printer. • LEF (Long Edge Fed) - Refers to paper that is fed into the printer on the long edge side. • SEF (Short Edge Fed) - Refers to paper that is fed into the printer on the short edge side.

This is a PORTRAIT Orientation

This is a

LANDSCAPE Orientation

Process is the paper’s direction through the printer that corresponds to the rotation of the photoconductors.

Scan or Scanning is the direction in which the LED or laser writes to the


General Print Quality Hot Tips and Tricks If paper jams and feed problems are encountered, follow the tips and simple rules of thumb which may solve the issue easily and quickly.

POSSIBLE CAUSE/ACTION TO TAKE WHAT TO DO

UNSUPPORTED MEDIA TYPE Check the printer specifications if you are not sure.

UNSUPPORTED MEDIA SIZE Check the printer specifications.

UNSUPPORTED MEDIA WEIGHT Check the printer specifications.

DRY MEDIA Paper that is left out of the package for a long period of time can dry out. Try using a fresh ream of paper.

CHANGE INPUT SOURCE Try printing from a different input source. This will help narrow down the cause of some problems.

TOO MUCH MEDIA LOADED Make sure the stack height does not exceed the indicated maximum height.

DAMAGED MEDIA Check if the media in the tray is wrinkled, creased, damp or curled. The media will not feed properly if damaged. Try a fresh ream of paper.

DIFFERENT TYPES OF MEDIA LOADED

Different types and/or weights of media loaded in the tray may cause misfeeds. Try using the same media.

TOO HIGH / TOO LOW RELATIVE HUMIDITY

This can affect the media and/or printer and its ability to feed properly. Check the printer specifications to see if it is located in an ambient environment.

MEDIA LOADED IMPROPERLY Reposition the media in the tray or option to make sure that is loaded properly. The media guides should be flushed against the media, but not too tight.

WORN-OUT ROLLERS Worn-out rollers may cause feed problems. Check the page count of the printer to see if it is time for a maintenance kit to be installed.

OBSTRUCTIONS IN THE PAPER PATH If paper, staples, paper clips or other items are left in the printer, they can prevent the media from feeding properly. Check if there are any visible obstructions.


COMPLEX PARTS AND PROCEDURES Parts listed in this section are complex for various reasons and are tagged with one or more of the following categories to explain its complexity:

• High Technical Repair Skill • Special Procedure(s)/Calibration(s) Needed • Special Tool(s) Needed • Damage / Error Risk • Other <explanation>

Guidelines The instructions for removal, installation and/or special adjustments are found in the Service Manual for each printer. Follow the instructions carefully to avoid additional errors, malfunction, or breakage. Complex parts that you may likely encounter include the ones listed below.

PART DIFFICULTY TYPE

CONTROLLER BOARD / SECURE ELEMENT SIM CARD • High Technical Repair Skill • Special Procedure(s)/Calibration(s) Needed • Damage / Error Risk

CONTROL PANEL • Special Procedure(s)/Calibration(s) Needed • Damage / Error Risk

CONTROL PANEL CABLE / OUTPUT ROLL • Damage / Error Risk

HVPS • Other <Print Quality issue>

IMAGING BASKET • Damage / Error Risk

LASER (PRINTHEAD) • Special Procedure(s)/Calibration(s) Needed

LVPS CAGE / DESKEW ROLL • Damage / Error Risk

SCANNER ADF / FLATBED • Special Procedure(s)/Calibration(s) Needed

TPS SENSOR • Damage / Error Risk

TRANSFER MODULE • Special Procedure(s)/Calibration(s) Needed


Controller Board / Secure Element SIM Card The TPS cable is lightweight on JTPSAA1. If you pull by the wires, you will break it and have to replace the cable. Remove the connector by squeezing the tab on the connector. The replacement procedure for this cable is long and tedious. Contains printer NVRAM and possible Secure Element SIM card. A Secure Element SIM card is optional on these printers. When replacing this part:

• Follow recommended Backup procedures for the settings contained on the Controller Board (see Restore Tool in the Knowledgebase Service Manual).

• Check for a Secure Element SIM Card on the existing Controller board. If present, move to the new controller. If the card is lost, customer data will be lost and the machine may have to be replaced. **Until EC1 is released, you will NOT receive an error if the Secure Element SIM card is missing.

• Use proper NVRAM preservation procedures – do not replace this card with another card that contains NVRAM at the same time before PORing between parts.

• Perform the Scanner Manual Registration which consists of two adjustments: ADF Registration Adjustment and Flatbed Registration Adjustment.

Control Panel This part contains NVRAM. Use proper NVRAM preservation procedures – do not replace this card with another card that contains NVRAM (Controller Board) at the same time before PORing between parts.

Control Panel Cable / Output Roll Be careful of the cable routing – it needs to be over the bridge and fastened with the adhesive. If not routed correctly, the cable may get snagged in the output shaft.

HVPS The three contacts in the back should move freely and not be pushed down. The pin in the back should be aligned when installed.

Imaging Basket This part needs to be removed for repairs – especially for the front door hinges, Isolation Unit, and the media feeder. If you forget to remove it, you will cause damage to the Transfer Module.

Laser (Printhead) Once replaced, a mechanical and electrical calibration needs to be performed to align the 4 colors. K (black) is aligned first with the mechanical adjustment; next, align CMY (cyan, magenta, yellow) using the Alignment Menu in Diagnostics. Follow the Printhead Alignment Adjustment in the Service Manual.

LVPS Cage / Deskew Roll When reinstall the LVPS cage after replacing the Deskew Roll, be sure and reinstall the metal access plate or it could potentially be a shock hazard.


Scanner ADF / Flatbed When the ADF or Flatbed is replaced, perform the Scanner Manual Registration which consists of two adjustments: ADF Registration Adjustment and Flatbed Registration Adjustment.

TPS Sensor The TPS cable is lightweight. If you pull by the wires, you will break it and have to replace the cable. Remove the connector by squeezing the tab on the connector. The replacement procedure for this cable is long and tedious.

Transfer Module When replaced, you must perform (1) a color calibration and (2) ITM reset in the Maintenance Menu.


MAJOR COMPONENTS LOCATION

Printhead

Fuser

Waste Toner Bottle

Low Voltage Power Supply (LVPS)

High Voltage Power Supply (HVPS)

Fuser Drive

Transfer Module


ENHANCED WIRING DIAGRAM


ACRONYMS & TERMS

ADF Automatic Document Feeder Input device that lets users feed multiple pages at one time without having to place each individual page on the copier or scanner.

CMYK Cyan Magenta Yellow BlacK Standard model for printing in which all colors are described in terms of the quantity of cyan, magenta, yellow, and black they contain.

EP Electrophotography or Electrophotographic A printing technique or method used in Laser printers in which the toner is being developed to the photoconductor drum and ready to be transferred into the paper.

eSF Embedded Solutions Framework A software that allows a wide range of java-based applications to run directly on Lexmark MFPs.

EWS Embedded Web Server A software built into a printer that provides a control panel for configuring the device from any web browser using the IP address of the device.

FTP File Transfer Protocol A standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet.

HTML Hypertext Markup Language A standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.

HTTP Hypertext Transfer Protocol An application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.

HVPS High Voltage Power Supply Power supply that converts electrical power from a low voltage power supply (LVPS) to much higher (static) voltages needed by the EP process used in laser printers.

IP Internet Protocol Data on an Internet Protocol (IP) network is organized into packets. Each IP packet includes both a header (that specifies source, destination, and other information about the data) and the message data itself.

IPDS Intelligent Printer Data Stream Host-to-printer data stream that provides an interface for controlling and managing all-points-addressable (APA) printers.

IPv6 Internet Protocol Version 6 Network layer protocol that enables data communications over a packet switched network.

LAS Lexmark Accessibility Solution Lexmark web-based software that helps users set up copy, fax, and scanning jobs from a network-connected computer or handheld device.

LCD Liquid-Crystal Display A low-power, flat-panel display

LED Light-Emitting Diode It is a semiconductor device that emits visible light when an electric current passes through it.


MFP Multi-Function Product or Multi-Function Printer A device that has several functions which includes printing, scanning, faxing and copying.

MPF Multi-Purpose Feeder An input component of a printer that feeds multiple sheets of non-standard paper.

OCR Optical Character Recognition The machine recognition of printed characters.

PCL Printer Command Language Set of printer commands developed by Hewlett-Packard specifically to provide a means of communication between computers and printers.

PDF Portable Document Format A file format that provides an electronic image of text or text and graphics that looks like a printed document and can be viewed, printed, and electronically transmitted.

POR Power-On-Reset A manual procedure in which a printer is turned off for 5-10 seconds, then turned back on. This ensures that the printer is operating in a known state. PORs are also done to access “hidden menus,” such as the Diagnostic Menu and Configuration Menu.

PPDS Personal Printer Data Stream Family of page description languages used by IBM printers.

SFP Single-Function Product or Single-Function Printer A device that performs one function: printing.

SNMP Simple Network Management Protocol An application–layer protocol defined by the Internet Architecture Board (IAB) in RFC1157 for exchanging management information between network devices.

SWE Ship With Equipment Item that is included with a new product.

TCP/IP Transmission Control Protocol / Internet Protocol A set of networking protocols that allows two or more devices to communicate.

TTFC Time to First Copy The elapsed time from when the Copy button is pressed on the printer control panel to the page exiting to the output bin. This includes the scan and print times.

TTFP Time to First Print The elapsed time from pressing Enter on the computer keyboard to the page exiting to the output bin. This includes the driver processing the image, communications between the computer and printer, processing the data stream, and the print times.

TLI Top Level Indicator EDIS terminology for a sellable item, usually associated with a seven digit alphanumeric identifier. After being released in EDIS, a TLI is distributed to an ERP system. The TLI is has sometimes also been referred to as a "top bill".

UI User Interface The way a person interacts with a printer, computer, or electronic device. The user interface (UI) comprises the screen menus and icons, keyboard shortcuts, gesture movements, help, and messages, as well as physical buttons.

USB Universal Serial Bus Industry standard interface for attaching printers and other peripherals to a computer.

Documents

Lexmark CS720, CS725, CX725 & C4150, XC4150 Study · PDF fileThe chart below outlines the naming convention of Lexmark Laser Printers based on a 5-digit identifier. ... Scan Enhancements