M5900RVe Direct Thermal Printer OPERATOR MANUAL PN 9001125A
Be sure to ask your SATO representatives about our maintenance contracts to ensure peace of mind during your usage of SATO products. For SATO office locations worldwide, visit ww.satoworldwide.com Copyrights The contents of this document are proprietary information of SATO Corporation and/or its subsidiaries in Japan, the U.S and other countries.
TABLE OF CONTENTS INTRODUCTION About This Manual General Description Primary Components Control Features Switches Connection Ports 1-2 1-3 1-3 1-5 1-5 1-5 TECHNICAL DATA Physical Characteristics Power Enviromental Print Media Sensing Interface Modules Processing Character Font Capabilities Barcode Capabilities Regulatory Approvals 2-2 2-2 2-2 2-2 2-3 2-2 2-3 2-3 2-3 2-4 2-4 INSTALLATION Unpacking & Parts Identification Printer Installation Site Location Media Selection Media Loading Interface Selection
OPERATION Printer Configuration Dip Switch Panels Configuration Modes Normal Mode Test Print Mode Advanced Mode Default Settings Mode Flash Memory Download Mode User Download Mode Hex Dump Mode Card Mode Non-Standard Clear Mode Service Mode Counters Mode Maintenance Mode Screen Identification Operational Adjustments Print Offset Pitch Print Reference Position Sensor & Accessory Location 4-2 4-2 4-6 4-6 4-7 4-8 4-9 4-10 4-12 4-13 4-14 4-15 4-16 4-17 4-18 4-19 4-23 4-23 4-23 4-23 4-24 4-25 TROUBLESHOOTING E
INTRODUCTION • • • SATO M5900RVe Operator Manual About This Manual General Description Control Features PN 9001125A Page 1-1
Unit 1: Introduction ABOUT THIS MANUAL This manual is laid out consistent with the product discussed and provides all of the information required for general printer configuration, troubleshooting, and maintenance. For specialized programming, refer to the Programming Manual provided with the product. Step-by-step maintenance instructions are provided with typical problems and solutions. Become familiar with each section before installing and maintaining the printer.
Unit 1: Introduction GENERAL DESCRIPTION The M5900RVe is a direct thermal, high performance printer capable of printing all popular bar codes and twelve human readable fonts; providing an inventory of thousands of styles and sizes. Its heavy metal construction is designed to deliver optimum performance in demanding enviroments.
Unit 1: Introduction MEMORY CARD IEEE1284 RD + RS BOA MAIN CIRCUIT BOARD INTERFACE BOARD PLATEN ROLLER PULLY EXT INTERFACE TIMING BELT POWER SWITCH DRIVE MOTOR MAIN FUSE A/C CONNECTOR POWER BOARD Figure 1-1b, Primary Components SATO M5900RVe Operator Manual PN 9001125A Page 1-4
Unit 1: Introduction CONTROL FEATURES SWITCHES Power Switch Line Key Two position on/off switch that controls power flow to the system. Toggles between on-line and off-line modes. When on-line, the printer is ready to receive data from the host. Acts as a pause during print by taking the printer off-line. Also used as a scroll-and-enter interface for printer setup. Feeds one blank label through the printer when off-line. When the printer is on-line, another copy of the last label will be printed.
Unit 1: Introduction SATO M5900RVe Operator Manual PN 9001125A Page 1-6
TECHNICAL DATA • • • • • • • • • • • SATO M5900RVe Operator Manual Physical Charcteristics Power Enviromental Print Media Sensing Interface Modules Processing Character Font Capabilities Barcode Capabilities Regulatory Approvals PN 9001125A Page 2-1
Unit 2: Technical Data PHYSICAL CHARACTERISTICS Width 10.25 Inches (261 mm) Height 11.25 Inches (285 mm) Depth 12.75 Inches (322 mm) Weight 22.75 Pounds (10.
Unit 2: Technical Data INTERFACE MODULES Parallel Port IEEE 1284 Standard Serial Port RS232C (9600 to 57,6000 dps) Standard RS422/485 (9600 to 57600 bps) Optional Ready/Busy or X-On/X-Off Flow Control Bi-Directional Status Universal Serial Bus USB Adapter Ethernet 10/100 Base T, 802.11B Wireless Wi-Fi Data Transmission ASCII Format PROCESSING CPU 32 Bit RISC FLash ROM 2 Mega-Bytes SDRAM 16 Mega-Bytes Receive Buffer 2.
Unit 2: Technical Data AGFA RASTER FONTS B Font CG Triumvirate, 8 to 72 pt. DOWNLOADABLE FONTS Bit Mapped True Type Fonts with Utility Program CHARACTER CONTROL Expansion up to 12 x in either the X or Y coordinates.
INSTALLATION • • • • • SATO M5900RVe Operator Manual Unpacking Parts Identification Printer Installation Interface Selection Accessories Installation PN 9001125A Page 3-1
Unit 3: Installation UNPACKING & PARTS IDENTIFICATION Unpack the printer as directed in the following procedure. 1 Place the shipping container (box) upright on a solid, flat surface. 2 Open the box, remove any loose items and the first layer of packing material. 3 Carefully lift the printer and accessories from the box and place them on a solid flat surface. 4 Remove the plastic covers from the printer and its accessories. 5 Inspect the printer and its accessories for visual physical damage.
Unit 3: Installation PRINTER INSTALLATION This chapter provides guidance on general printer setup and installation. The following chapter provides instructions on how to selct an interface for the host to communicate with the printer.
Unit 3: Installation MED MED I IA M ED IA A Figure 3-1, Media Loading MED IA M ED IA M ED IA M ED IA M ED IA M ED IA MED IA Figure 3-2, Fan-Fold Loading SATO M5900RVe Operator Manual PN 9001125A Page 3-4
Unit 3: Installation INTERFACE SELECTION This chapter presents the printer interface types and their specifications. These specifications include detailed information to assist in the selection of the most appropriate method for the printer to interface with the host. The four acceptable interface methods are: • RS232C Asynchronous Serial • IEEE1284 Parallel • Universal Serial Bus (USB) Adapter • Local Area network (LAN) Ethernet • 802.
Unit 3: Installation RS232C SERIAL INTERFACE SIGNALS PIN DIRECTION 1 2 Reference To Host 3 4 To Printer To Host 5 To Printer 6 To Printer 7 20 Reference To Host SIGNAL DEFINITION FG (Frame Ground) TD (Transmit Data) - Data from the printer to the host computer. Sends X-On/ X-Off characters or status data (bi-directional protocols). RD (Receive Data) - Data to the printer from the host computer. RTS (Request to Send) - Used with Ready/Busy flow control to indicate an error condition.
Unit 3: Installation IEEE1284 PARALLEL INTERFACE The parallel interface is a Plug-In Interface Module that can be installed by the user. It conforms to the IEEE1284 specification. It will automatically detect the IEEE1284 signals and operate in the high speed mode. If it does not detect the IEEE1284 signals, it will operate in the standard Centronics mode, which is significantly slower.
Unit 3: Installation UNIVERSAL SERIAL BUS (USB) ADAPTER The Universal Serial Bus (USB) interface is a Plug-In Interface Module that can be installed by the user. It requires a driver (shipped with each printer that has the interface installed) that must be loaded on your PC and the PC must be configured to support USB peripherals using Windows 98 or above. Details for loading the USB driver are contained in the USB Interface Manual that is shipped with each printer with a USB Optional interface installed.
Unit 3: Installation RECEIVE BUFFER The data stream is received from the host to the printer one job at a time. This allows the software program to maintain control of the job print queue so that it can move a high priority job in front of ones of lesser importance. A multiple job buffer allows the printer to continuously receive print jobs while compiling and printing other jobs at the same time. It acts much like a Print buffer to maximize the performance of the host and the printer.
Unit 3: Installation ACCESSORIES INSTALLATION In most instances, the printer is ordered with the desired accessories pre-installed. However, changes in printing conditions or requirements does warrant upgrades from time to time. This chapter of the manual covers the installation procedures of accessories that are deemed suitable for the owner/operator to perform. For all other accessory upgrades or installatins, contact the SATO Technical Support Dept.
OPERATION • • • SATO M5900RVe Operator Manual Printer Configuration Configuration Modes Operational Adjustments PN 9001125A Page 4-1
Unit 4: Operation PRINTER CONFIGURATION The printer may be configured for specific jobs via the interface panel located on the face of the printer. The interface panel is comprised of two dip switch complexes, three potentiometers (PRINT, OFFSET, PITCH), LINE and FEED keys. Each of these must be adjusted to fully configure the printer. The first step is to set the dip switches to their proper positions and then proceed to the Configuration Modes and Operational Adjustments chapters to complete process.
Unit 4: Operation DSW1 DEFAULT SETTINGS 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 OFF OFF OFF OFF OFF OFF OFF OFF DSW1 CONFIGURATION 1-1 Data BIt 1-2 1-3 Parity 1-4 Baud Rate 1-7 1-8 Protocol 8 Data Bit ON 7 Data Bit 1-2 1-3 ON ON Reserved ON OFF Odd OFF ON Even OFF OFF None Stop Bit 1-5 1-6 OFF OFF 1 Stop Bit ON 2 Stop Bit 1-5 1-6 ON ON Normal: 2400, High Speed: 57600 ON OFF Normal: 4800, High Speed: 38400 OFF ON Normal: 19200, High Speed: 19200 OFF OFF
Unit 4: Operation DSW2 DEFAULT SETTINGS 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 OFF OFF OFF OFF OFF OFF OFF OFF DSW2 CONFIGURATION DSW1 FUNCTION SETTING 2-1 Reserved 2-2 Media Sensor Selection 2-3 Head Check 2-4 Hex Dump 2-5 Multi-Job Receive Buffer 2-6 Firmware Download 2-7 Protocol Code 2-8 Operational Mode CONFIGURATION OFF ON OFF Gap Sensor ON Eye-Mark Sensor OFF Head Check Disabled ON Head Check Enabled OFF Hex Dump Disabled.
Unit 4: Operation DSW3 DEFAULT SETTINGS 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 OFF OFF OFF OFF OFF OFF OFF OFF DSW3 CONFIGURATION 3-1 3-2 Operating Mode 3-3 Label Sensor 3-4 Backfeed 3-5 Print Start Signal 3-6 3-7 External Signal Type Repeat Print via Ext Signal 3-8 3-1 3-2 OFF OFF Batch/Continuous OFF ON Tear Off ON OFF Cutter ON ON Dispenser OFF Sensor Used ON Sensor Not Used OFF Enabled ON Disabled OFF Disabled ON Enabled 3-6 3-7 OFF OFF Type 4 OFF O
Unit 4: Operation CONFIGURATION MODES This chapter provides an overview of the various configuration modes of the operation menu. With exception of the Power switch located on the back side of the printer, all of the following configuration activities are performed via the use of the operator panel located on the printer front. Many settings may also be controlled via software commands.
Unit 4: Operation TEST PRINT MODE This mode allows the operator to print test labels for troubleshooting and for verification of configuration settings. FEED + POWER Printer beeps. TEST PRINT MODE CONFIGURATION LINE Scrolls thru options each time the LINE key is pressed. FEED TEST PRINT MODE BARCODE TEST PRINT SIZE 11CM TEST PRINT MODE HEADCHECK TEST PRINT MODE MEMORY TEST PRINT MODE FACTORY PRINT SIZE SMALL LARGE Continuously prints test labels of option selected.
Unit 4: Operation ADVANCED MODE The Advanced Mode is provided to make basic printer operational adjustments. Typically, once these adjustments or settings have been made, they will not require additional address unless a new job is downloaded. The following table identifies the menus of the Advanced Mode and their purpose. LINE + POWER Printer beeps.
Unit 4: Operation DEFAULT SETTINGS MODE When the sequences have been completed, the printer automatically returns to its default gap or eye-mark settings. The default settings are those programmed settings of the factory prior to delivery. LINE + FEED + POWER Printer beeps. DEFAULT SETTING YES NO LINE Scrolls options each time the LINE key is pressed. FEED Yes / No POWER = OFF Beeps 3 times and returns default settings.
Unit 4: Operation FLASH MEMORY DOWNLOAD MODE A Flash ROM internally stores and deletes font data and custom designed character data. The storage capacity for custom characters is 95 for each type of 16 x 16, 22 x 22, and 24 x 24 dots. There are four transmission protocols for font download: (1) Download Font Storage, (2) Download Font Deletion, (3) Download Font Information Aquisition, (4) Storage CustomDesigned Character.
Unit 4: Operation STORAGE OF CUSTOM DESIGNED CHARACTER STATUS DESCRIPTION ACSII HEX TRANSFER Storage Ready Status O 4F Printer to Host Storage Completed Normally E 45 Printer to Host Storage Completed Abnormally Z 5A Host to Printer DSW2-6 = ON POWER = ON Printer beeps. FLASH DOWNLOAD READY Download Data. XXXXXX DOWNLOAD DOWNLOADING Printer downloads data.
Unit 4: Operation USER DOWNLOAD MODE This download feature allows the operator to download print jobs to the printer. When downloading is complete, the LCD screen will return to the original display after three seconds. If an error occurs, a DOWNLOAD ERROR will display and identify the reason. DSW2-7 = ON LINE + POWER Printer beeps. USER DOWNLOAD PRESS LINE KEY LINE USER DOWNLOAD WAITING Download Data USER DOWNLOAD DOWNLOADING Printer downloads data.
Unit 4: Operation HEX DUMP MODE The contents of the print buffer and the data received before it is placed into the print buffer may be examined through the use of the Hex Dump Mode. Each line of the printed data is inumerated in the first column, the second column contains the data in hexadecimal format, and the right column contains the same data in ASCII format. Print Buffer/Receive Buffer POWER = OFF DSW2-4 = ON POWER ON ONLINE QTY: 000000 POWER = ON and transmit data. Create and print A label.
Unit 4: Operation CARD MODE This configuration mode is used for configuring the Flash ROM and/or PCMCIA interface cards. The following table identifies the menus of the Card Mode and their purpose. The flow chart after, sequences the operator, printer, and host interface activities. LINE + POWER MEM SELECT(CC1) CARD MEMORY Printer beeps.
Unit 4: Operation NON-STANDARD CLEAR MODE Returns non standard protocol code to the default value. The default values are STX (7B), ETX (7D), ESC (5E), ENQ (40), NUL (7E), CAN (21), OFFLINE (5D). Follow the sequences in th flow chart below to perform this function. DSW2-7 = ON LINE + FEED + POWER Printer emits I long and 3 short beeps. ALT.
Unit 4: Operation SERVICE MODE Allows the programming of various dimensional settings and the language used. Refer to the table below for an explaination of each menu encountered. The following flow chart provides configuration sequence. LINE + POWER GAP INPUT x.x V x.xV Printer beeps. AUTO ONLINE FEED YES NO ADVANCED MODE FEED ON ERROR YES NO LINE twice REPRINT W/FEED YES NO LINE SERVICE MODE LINE & FEED Alternately Printer processes each time the FEED key is pressed.
Unit 4: Operation COUNTERS MODE The Counters Mode allows integrated cycle counters to be reset for various components and accessories. LINE + POWER COUNTERS HD DSP CUT LIFE Printer beeps. HEAD COUNTER x.xM HEAD COUNTER CLEAR YES NO ADVANCED MODE LINE three times DISPENSE COUNTER 0.0M COUNTERS MODE DSP COUNT CLEAR YES NO LINE & FEED Alternately CUT COUNTER 0 Printer processes each time the FEED key is pressed. CUT COUNT CLEAR YES NO LIFE COUNTER 0.
Unit 4: Operation MAINTENANCE MODE The Maintenance Mode encompasses the Factory and All Clear Modes. DSW2-4 = ON LINE + FEED + POWER Printer beeps. MAINTENANCE MODE DIPSW2-4 ON->OFF DSW2-4 = OFF FACTORY MODE LINE/FEED Alternately Scrolls When LINE is pressed. Processes and advances when FEED is pressed. FEED ALL CLEAR COUNTER EEPROM COUNTER CLEAR LINE/FEED Alternately PRINT SIZE SMALL LARGE Scrolls When LINE is pressed. Processes and advances when FEED is pressed.
Unit 4: Operation ADVANCED MODE MENU DESCRIPTION DARKNESS RANGE Affects the print darkness via the heat range of the print head. Option A has a higher heat range than option B. Option B is preferable if the print job requires large print coverageon the label to prevent excessive heat buildup and damage to the head. This option works in conjunction with the print darkness menu in the Normal Mode. ZERO SLASH Determines if a zero will be printed with or without a slash.
Unit 4: Operation CARD MODE MENU DESCRIPTION CARD->MEMORYCOPY SATO FONT Allows the copying of SATO Font in Flash ROM. LINE key moves the cursor and the FEED key selects the option. CARD->MEMORYCOPY ALL Allows the copying of the entire card contents into Flash ROM. LINE key moves the cursor and the FEED key selects the option. MEMORY->CARDCOPY ALL Allows the copying of the entire contents of the Flash ROM or firmware. A 4MB card or greater is required.
Unit 4: Operation SERVICE MODE MENU DESCRIPTION REPRINT W/FEED YES NO Sets reprint of previous labels. Prints one page of the previously printed contents by pressing the FEED key during ONLINE. The default value is NO: do not reprint. LINE key moves the cursor and the FEED key selects the option. FORWARD/BACKFEED DISTANCE DEFAULT Sets the peel-off paper feed distance. The paper feed/backfeed may be set from 0-255mm. The actual Feed/Backfeed distance is equivalent to VR value + Paper Feed quantity.
Unit 4: Operation COUNTERS MODE MENU DESCRIPTION CUT COUNT CLEAR YES NO Offers the option to reset the counter to zero. The default value is NO. LINE key moves the cursor and the FEED key selects the option. LIFE COUNTER 0.0M Printer life counter display. Displays the quantity of times the printer has cycled. MAINTENANCE MODE MENU DESCRIPTION COUNTER CLEAR Selects the counter to clear. The options are None, All, Print Head, Cutter, and Dispenser. The default value is NONE: Do not clear.
Unit 4: Operation OPERATIONAL ADJUSTMENTS These operational adjustments are for fine tuning the printer as necessary following the configuration process and are largely confined to the three potentiometers located on the operator panel. Refer to the table below for their function. POTENTIOMETER PRINT DESCRIPTION/PROCEDURE Is used to adjust the darkness or lightness of the printed image and should be used in conjunction with the configuration adjustments.
PAPER FEED DIRECTION Unit 4: Operation EYE-MARK LABEL Standard Print, Cut, Peel Off, Tear Off Positions Standard Cutter Position LABEL LABEL GAP LABEL Standard Print, Peel Off, Tear Off Positions Standard Cutter Position LABEL TAG EYE-MARK Standard Cutter Position Standard Print Position Figure 4-13, Print Refernece Position SATO M5900RVe Operator Manual PN 9001125A Page 4-24
Unit 4: Operation 20.0mm 39.0mm 11.0mm 10.
Unit 4: Operation SATO M5900RVe Operator Manual PN 9001125A Page 4-26
TROUBLESHOOTING • • • SATO M5900RVe Operator Manual Error Signals Troubleshooting Table Troubleshooting Procedures PN 9001125A Page 5-1
Unit 5: Troubleshooting ERROR SIGNALS LCD MESSAGE BEEP MACHINE ERROR 1 long Machine Error Defective main board Cycle power on/off. If the former doesn’t work, replace board. EEPROM ERROR 1 long EEPROM read/write error Cycle power on/off. Reload. Replace. 3 short Print Head is damaged Replace print head then cycle power. 3 short Media meandering Incorrect adjustment Incorrcet sensor selection Defective sensor Check media guides. Cycle power and check adjustment. Check sensor selection.
Unit 5: Troubleshooting TROUBLESHOOTING TABLE IMAGE VOIDS Damaged print head. Replace print head. Damaged electronics. Replace circuit board. Damaged or worn platen roller. Replace platen roller. Vertical line in printed image. Dirty or defective print head. LIGHT PRINT IMAGES Low print head energy/darkness. Adjust darkness control. Low print head pressure. Adjust head balance. Foreign material on print head. Clean print head and platen roller. Poor head alignment.
Unit 5: Troubleshooting NO PRINTED IMAGE No voltage output. Test power supply and replace as necessary. Damaged print head. Replace print head. Damaged electronics. Replace circuit board. Interface problems. Check. Refer to relative instructions below. Data input error. Ensure correct data stream. LCD FIELD ILLUMINATED BUT WITHOUT WORDS OR NO DISPLAY AT ALL Power cable issues. Ensure properly connected. Ensure not defective. Incorrectly positioned display potentiom- Adjust as required. eter.
Unit 5: Troubleshooting TROUBLESHOOTING PROCEDURES The procedures below provide in depth instructions on symptom analysis of specific components. If it is suspected that the problem lies within one of these components, refer to the relative instructions. CAUTION: NEVER CONNECT OR DISCONNECT INTERFACE CABLES (OR USE A SWITCH BOX) WITH POWER APPLIED TO EITHER THE PRINTER OR THE HOST. THIS MAY CAUSE DAMAGE TO THE INTERFACE CIRCUITRY AND IS NOT COVERED BY WARRANTY.
Unit 5: Troubleshooting UNIVERSAL SERIAL BUS (USB) INTERFACE If nothing prints during a test print, verify the device drivers have been successively installed by performing the following: 1. Click on Start, Settings, and then Control Panel. 2. Click on System within the new window. 3. Click on the Device Manager tab. 4. Ensure that the View Device By Type is checked. 5. Scroll down to SATO-USB Device and ensure that errors do not exist. Reinstall as required. 6. Reboot the PC and the printer. 7.
Unit 5: Troubleshooting LAN ETHERNET INTERFACE • If the printer does not come up ready: Ensure the printer is powered on, all cables are connected, and the printer is on-line. If possible, connect a terminal to the serial port and observe for a boot prompt indicating the print server firmware has not been loaded properly. If reloading does not correct the problem, try pressing switch 1 for more than 10 seconds. If the problem persists, the product may be defective.
Unit 5: Troubleshooting SATO M5900RVe Operator Manual PN 9001125A Page 5-8
MAINTENANCE • • • SATO M5900RVe Operator Manual Cleaning Procedures Replacement Procedures Adjustment Procedures PN 9001125A Page 6-1
Unit 6: Maintenance CLEANING PROCEDURES Cleaning of the printer is a necessary maintenance activity to ensure print quality and long printer life. There are two basic types of cleaning involved; the removal of loose debris and the removal of residue. Use a soft cloth and/or a pneumatic blower to remove debris from the printer. This process should be performed prior to the removal of residue.
Unit 6: Maintenance REPLACEMENT PROCEDURES The printer contains replaceable components and sub-assemblies. This chapter contains stepby-step instructions for the removal and replacement of those primary components and subassemblies that are subject to wear or damage. FUSE REPLACEMENT The printer has three fuses; one is externally accessible and is wired to the power supply while the other two are located internally and directly connected to the main circuit board.
Unit 6: Maintenance PRINT HEAD REPLACEMENT If the print head becomes damaged or wears out, it can be easily removed and replaced without having to make critical adjustments. Before replacing the print head, check the head counter values by printing a test pattern. 1 Switch off the printer and disconnect the power supply cord. 2 Open the right housing cover and unlatch print head assembly (1, Figure 6-3). 3 Pry lever guard (2) free from print assembly (1).
Unit 6: Maintenance INTERFACE BOARD REPLACEMENT 1 Switch off the printer and disconnect the power supply cord. 2 Remove two screws (1, Figure 6-4) securing interface board (2) to the exterior of rear housing cover (3). 3 Withdraw defective interface board (2) from the printer. 4 Insert replacement interface board (2) through the housing slot to connect with the main circuit board. 5 Secure interface board (2) to the rear housing cover (3) using two screws (1).
Unit 6: Maintenance ADJUSTMENT PROCEDURES To maintain optimum performance and print quality, periodically mechanical adjustments will have to be made. These adjustments are typically required following the replacment of a component. Other adjustments may be required due to variations in media size or quality and due to different print image denseness. Instructions relative to those conditions are not covered here. Refer to the Installation and Operation units for those relative instructions.
Unit 6: Maintenance PRINT HEAD BALANCE ADJUSTMENT If the print head balance is out of adjustment, the printed image will be darker on side of the label than the other and the media stock will be proned to want to travel in the direction of least resistance. The adjustment of print head pressure on the label is subjective. One will know when balance is achived by the disappearance of prevailing negative characteristics. To adjust print head balance, perform the following procedure.
Unit 6: Maintenance PRINT HEAD ALIGNMENT Print head position has a direct impact on print quality. An improperly aligned print head will cause the print to be inconsistent across the label. The following procedure will provide guidance on print head alignment. 1 Remove power and disconnect the power supply cord. 2 Open the right housing cover to access and open the print assembly (1, Figure 6-6). 3 Detach lever guard (2), loosen two set screws (3), and one mounting screw (4).