Infosight Labelase 28 series Assembly instructions

LabeLase28XX Tag Printer

Basic Operations & Maintenance Manual

LL2860, LL2886, LL28100

Revision E

February 2021

INFOSIGHT CORPORATION

20700 U.S. Highway 23

P.O. Box 5000

Chillicothe, Ohio 45601 USA

+1.740.642.3600 Tel. (M-F 8am-5pm US Eastern Time Zone)

+1.800.401.0716 Emergency Service U.S. & Canada (outside normal business hours)

+1.740.642.4666 Emergency Service International (outside normal business hours)

+1.740.642.5001 Fax.

www.infosight.com

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Manual Revision History:

10/09/2007 Revision A Initial Release

10/15 /2007 Revision B Correction to Spares List - ITM24343

Added Manual Revision History

Common Setup Printer Configuration Values

12/13/2012 Revision C Added Clarification to 120/240VAC

and Labeling

5/1/2013 Revision C2 Added Floor Mount Instructions

Added Fuse Replacement Clarification

5/21/2013 Revision C3 Changed laser safety wattages

5/22/2013 Revision C5 Cleaned up the index

10/15/2013 Revision C6 Added 80 Watt Laser

3/14/2014 Revision C7 Added 100 Watt Laser

3/18/2016 Revision D Updated for Producer Upgrade,

updated formatting

9/16/16 Revision D1 Corrections after Reviews

10/1/2019 Revision D2 Corrections after Reviews

Corrections Laser Settings Table

Added 60 Watt Laser Specifications

Correct Block diagram

01/18/21 Revision E Remove old printer models no longer offered

Update with currently offered printer models

First Printing: August 2003

INFOSIGHT CORPORATION reserves the right to make changes in specifications and other information

contained in this manual without prior notice, and the reader should consult INFOSIGHT CORPORATION

to determine whether any such changes have been made.

In no event shall INFOSIGHT CORPORATION be liable for any incidental, indirect, special, or

consequential damages whatsoever (including but not limited to lost profits) arising out of, or relating to this

manual or the information contained in it, even if INFOSIGHT CORPORATION has been advised, knew, or

should have known of the possibility of such damages.

INFOSIGHT CORPORATION expressly warrants the equipment manufactured by it as set forth in the

Standard Terms and Conditions of Sale. INFOSIGHT CORPORATION makes no other warranties, either

expressed or implied (including without limitation warranties as to merchant ability or fitness for a particular

purpose).

InfoTag, LabeLase, PermaLabel®, Pic-Anneal®, and KettleTag®PLUS are registered trademarks of

InfoSight Corporation.

LabeLaseProducerTM, Info-TintTM, FoamTagTM, ToughTagTM, AlumaTagTM, and X-Tag™ are trademarks

of InfoSight Corporation.

Windowsis a registered trademark of Microsoft Corporation.

Optical/Laser Safety

INVISIBLE LASER RADIATION

AVOID EYE OR SKIN EXPOSURE TO

DIRECT OR SCATTERED RADIATION

CLASS 1 LASER PRODUCT, USING

A CLASS 4 EMBEDDED LASER (60W, 80W, or 100W, 10.57 –10.63 μm)

The laser beam Exits the Final lens 7.5 inches from the tag

Never attempt to operate the Laser Tag Marker without the protective covers in place.

Never attempt to override any of the safety interlocks on the tag printer.

Never attempt to dismantle or repair the tag printer. In case of malfunction contact a Infosight service

representative.

Any of the actions mentioned above may result in permanent eye or skin damage. Refer to Laser Safety

section for more information on laser safety.

Labels / Warnings

Caution, Laser Radiation –See Appendix

Warning label located on the side on the maintenance door and on

the top in front of the exhaust:

CLASS 4 INVISIBLE LASER

RADIATION WHEN OPEN

AVOID EYE OR SKIN EXPOSURE TO

DIRECT OR SCATTERED RADIATION

Warning label located above the rating plate on the side of the Laser

Marker, near the bottom, near the communications ports:

CLASS 1 LASER PRODUCT

Environmental

Conditions

The LabeLase® Printer is intended for Indoor use only. Altitude up to 6500 feet,

operating temperature 40 to 100 degrees F, 80% maximum relative humidity, rated

220VAC Fused at 5A 50/60Hz or 110VAC fused at 12A 50/60Hz according to Job

Number ( Legend plate on marker ), pollution degree 2. NOTE: 220V models

both sides of the incoming line voltage are fused.

CAUTION

If this printer is not used in the manner specified by this manual, the

safety features provided may be insufficient.

Warning Label located on the side of the printer, near

the communications ports, regarding California

Proposition 65.

SOFTWARE/FIRMWARE LICENSE AGREEMENT

IMPORTANT: THE SUBJECT PROGRAMS ARE LICENSED BY INFOSIGHT CORPORATION TO

END-USERS FOR THEIR USE ONLY ON THE TERMS BELOW. ACCEPTING AND USING THESE

PROGRAMS INDICATES YOUR ACCEPTANCE OF THESE TERMS. THIS IS A LEGAL

AGREEMENT BETWEEN YOU, THE END USER, AND INFOSIGHT CORPORATION.

1) GRANT OF LICENSE. INFOSIGHT CORPORATION ("INFOSIGHT") agrees to grant to you a non-

exclusive license to use the INFOSIGHT software/firmware program (the "PROGRAM") subject to the

terms and conditions of this license agreement.

2) DEFINITION OF TERMS. The term SOFTWARE refers to a computer program stored on CDROM,

floppy diskette, hard disk, magnetic tape, paper tape or other media, that must be loaded into the computer's

memory to be executed. The term FIRMWARE refers to a computer program stored in semiconductor

memory (ROM, PROM, EPROM, EEPROM, NVRAM, etc.) that is an integral part of the computer's

memory. Together, these forms of computer programs are referred to as the "PROGRAM".

3) COPYRIGHT. The PROGRAM(s) and Documentation are owned by INFOSIGHT and are protected

by United States copyright laws and international treaty provisions. The PROGRAM(s) contain trade

secrets and proprietary property of INFOSIGHT. You may make one copy of the PROGRAM(s) solely for

backup or archival purposes provided that the copy clearly displays the INFOSIGHT copyright notice.

Additional copies may be made when authorized to do so in writing by INFOSIGHT. In addition to any

other right of INFOSIGHT, INFOSIGHT has the right to terminate this license if the terms of this license are

violated.

4) RESTRICTION ON USE AND TRANSFER. The single-processor version(s) of the PROGRAM(s)

and Documentation are to be used on one computer or embedded system at any one time. The multi-

processor version(s) of the PROGRAM(s) and Documentation may be used over a network provided that the

number of computers accessing the network simultaneously shall not exceed the number authorized by

INFOSIGHT or for which you paid the corresponding multi-processor fee. You may not distribute the

PROGRAM(s) or Documentation to a third party. You may transfer the license and complete package

(retaining nothing) if the transferee agrees to the terms of this License Agreement. Neither the

PROGRAM(s) nor the Documentation may be changed or translated without express written permission of

INFOSIGHT. You may not reverse engineer, decompile or disassemble the PROGRAM(s).

5) WARRANTY for the subject PROGRAM(s) is covered under the INFOSIGHT STANDARD TERMS

AND CONDITIONS OF SALE.

6) TERM. The license is effective until terminated. It may be terminated if you fail to comply with any

term or condition of this License Agreement. You may terminate this License Agreement at any time. In

the event of termination, you agree to destroy the PROGRAM(s) and Documentation together with all

copies and related material.

7) YOUR USE OF THIS PROGRAM(S) acknowledges that you have read this License Agreement and

agree to its terms. This agreement is complete and supersedes any other agreement that may have related to

the subject matter of this agreement.

PREFACE

The LabeLase28XX Tag Printer is fourth in the family of InfoSight laser tag markers. The LabeLase

28XX series contains many new features, including: a higher internal processor clock speed, a PC-driven

interface and the ability to print multilingual fonts.

This OPERATIONS AND MAINTENANCE manual is intended as a companion to the ONLINE

REFERENCE MANUAL supplied with the Producer™ & Designer software package and also available on

the InfoSight webpage:

http://www.infosight.com/labelaseproducer2/

This OPERATIONS AND MAINTENANCE manual will be automatically installed on your computer hard

drive when installing the Producer™ software from the thumbdrive. It may be found under the

PROGRAMS menu with other INFOSIGHT software and HELP files.

MINIMUM SYSTEM REQUIREMENTS

❑IBM PC 100% compatible computer.

❑Windows 7 (32/64bit) / Windows 8/8.1 (32/64 bit) / Windows 10 (32/64 bit)

❑1 Serial Com port, USB port, or Ethernet port (for connection to the printer).

❑Color monitor (1024X768 resolution or higher recommended) .

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LL28XX Tag Printer Copyright © 2003-2021 InfoSight Corporation All Rights Reserved Page vii 
Table of Contents 
 
 
SYSTEM STARTUP...............................................................................................1 
AFFIXING THE LL28XX TO SOLID PLATFORM...................................................1 
CONNECT WATER COOLER TO PRINTER.........................................................2 
STARTUP SEQUENCE: ........................................................................................3 
LOADING NEW TAGS...........................................................................................4 
PRINTING A TAG ..................................................................................................5 
LABELASEPRODUCERSOFTWARE.............................................................5 
PRINTER CONFIGURATION & LASER SETTINGS..............................................7 
COMMON SETUP PRINTER CONFIGURATION VALUES FOR VARIOUS 
MODELS................................................................................................................7 
CYCLE TIME CONSIDERATIONS.........................................................................8 
BASIC TROUBLE SHOOTING ..............................................................................9 
NORMAL MAINTENANCE & SERVICING...........................................................10 
SIDE AIR FILTER REMOVAL & REPLEMENT....................................................10
CUSTOMER SERVICE........................................................................................11
FUNCTIONAL BLOCK DIAGRAM........................................................................12 
RECOMENDED SPARES FOR LL28XX..............................................................13 
LASER SAFETY...................................................................................................14 
Section I: Introduction to Laser Safety.............................................................14 
Section II: Types of safety interlocks...............................................................14
Internal Laser Specifications (60 Watt).............................................................15 
Internal Laser Specifications (80 Watt).............................................................16 
Internal Laser Specifications (100 Watt)...........................................................17 
LASER SPECIFICATIONS:..................................................................................17
DECLARATION OF CONFORMITY.....................................................................18
ENGINEERING DRAWINGS ...............................................................................20 
 
 
 
 
6 

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SYSTEM STARTUP

The Power requirements for the LabeLase28XX Tag Printer differs according to the as built customer

requirement. By looking at the label plate at near the power entry you can determine whether the unit is:

•120 VAC, 50/60HZ fused at 10 Amps or

•240 VAC, 50/60 Hz, fused at 5 Amps.

WARNING: 220V models both sides of the incoming line voltage are fused.

Recommended AC plug type is :

Woodhead 1447 for 110V

Use a properly approved IEC 309 plug for 220V power connection.

Note: Complete AC Disconnect is accomplished at the power plug.

The LabeLase28XX Tag Printer should be positioned so that the power supply cord exits from the left side

of the machine.

The LabeLase28XX Tag Printer should be placed in a temperature controlled environment. This marker,

though designed for industrial use, should be treated as any typical computer system and printer. Dirty

environments will necessitate more frequent cleaning for internal optics.

A 12-foot (3.6 meter) RS-232 serial communications cable and a USB communications cable are provided

for communicating with your Windows-based PC. Use only one cable.

AFFIXING THE LL28XX TO SOLID PLATFORM

Important:

The LL28XX support legs are designed to be anchored to the floor or concrete to prevent the unit from

tipping over in the unlikely event of a force exerted upon the side surfaces of the units. Incorporated in the

design of the support legs are 4 x 33/64" thru-holes. These four thru-holes are to have placed through them,

suitable anchor bolts to affix the LL28XX to the floor. The type of anchor bolt used will depend upon the

base material the LL28XX will be set upon. Recommended anchor bolts are listed below.

Note: Anchor bolts used are to withstand a tension weight of at least 50 lbs. each.

Manufacture Description Floor type

------------------------------------------------------------------------------------------

Hilti KB II 38-3 3/8" Kwik bolt Concrete

Cast in place 3/8-16UNC 2" Concrete

3/8" x 2" Lag bolts Wood

3/8" x 4 " J bolts Steel Grating

CONNECT WATER COOLER TO PRINTER

The printer needs to be connected to a water

cooler. InfoSight recommends a CoolMate water

cooler.

Connect the inlet and outlet water lines between

the cooler and the printer. It does not matter

which connection is which in the printer –the

water will flow in either direction. The

connection points are circled in the photo to the

right. Note –the printer is shipped with a short

tube connected to each connection point. This is

to keep the connections and internal water lines

clear.

Plug the cooler into an outlet. There is no

automatic control between the printer and the

cooler. The cooler needs to be running when the

printer is. It is the operator’s responsibility to

ensure the cooler is running.

STARTUP SEQUENCE:

1. Attach the preferred communications cable from the

LabeLase28XX Tag Printer to your Windows-based

PC running LabeLaseProducersoftware.

2. Install tag stock onto tag payoff reel

3. Insert the AC power cord into a nearby power

receptacle.

4. Place the security key in the machine, The key

functions as an ON-OFF switch.

5. Turn key to the horizontal (ON) (I) position. NOTE: The

security key can only be removed when in the OFF

position.

Side Panel, toward the bottom

6. Remove E-STOP by pulling the red button.

7. Feed tag stock into printer. If necessary, press the tag

FEED button to align tags to the breakoff location.

8. Start LabeLaseProducersoftware on your PC.

9. Load a pre-existing tag layout, or design a new tag

layout. NOTE: designing or changing a tag layout

requires SUPERVISOR login.

10. Adjust printer setup parameters if necessary (e.g., laser

speed). NOTE: other than setting laser speed

(LIGHTER/DARKER slider bar), this feature requires

SUPERVISOR login. Front Panel

NOTE: The Producersoftware is password protected for all features beyond loading an

existing tag layout, entering tag variable data, adjusting laser speed and initiating printing.

The default password for new installations is blank (no data, no spaces). A new password

should be created before printer is commissioned for regular operator use.

4/5

LOADING NEW TAGS

1. Mount the new roll atop the circular platform to the left of the marker.

2. Feed by hand the tip of the tag stock, pushing it into first roller until it stops

on “the drive roller”.

3. Once reaching the drive roller press the Amber Lighted Tag Feed

Pushbutton.

If necessary, tag stock can be manually fed into the printer by pressing the FEED button located above the

large red E-STOP button.

CAUTION: DO NOT GRIP THE TAG STOCK BY ITS EDGES WHEN FEEDING

INTO THE PRINTER. PROTECT YOUR HANDS AND FINGERS FROM THE

SHARP EDGES OF THIN METAL TAG STOCK AT ALL TIMES.

Reminder - The marker is not ready for use and will not feed tags until the

E-STOP button is returned to the OUT position by pulling red button.

NOTE: The SINGLE PRINT feature of the printer requires a minimum tag or

tag-strip length of three inches (76mm).

For example, a single 3x3 (or 3x4, 3x6, etc) tag may be printed. If single

printing of a 3x1 (76 x 25mm) tag is desired, a strip of at least 3 tags must be

inserted in the side slot.

CAUTION: DO NOT GRIP THE TAG STOCK BY ITS EDGES WHEN FEEDING

INTO THE PRINTER. PROTECT YOUR HANDS AND FINGERS FROM THE

SHARP EDGES OF THIN METAL TAG STOCK AT ALL TIMES.

PRINTING A TAG

Note - The following assumes the LabeLase28XX Tag Printer has already been setup with a tag layout.

There are several ways to print a tag using the LabeLase28XX.

A) If tag stock is loaded in the machine from the rear payoff reel and properly aligned at the break off

exit point:

1. Pressing the PRINT button located beside the red E-STOP will initiate printing of 1 or

more tags, depending on operator-entered data on the main ProducerTM screen.

2. Pressing the F12 key on your PC.

3. Use the mouse to click Accept and Begin Print button on your PC.

4. A print command may be sent from your host computer to your PC via Extended

Protocol.

B) If there is no tag stock feeding in from the side of the machine, a single tag inserted in the SIDE slot

will be automatically drawn into the printer.

5. If the AUTO PRINT SINGLE ITEMS box is checked (enabled) in the SETUP / PRINTER

CONFIGURATION menu (requires supervisor login), then tag printing will begin

automatically with no further action or input required.

6. If the auto print box is NOT checked, then any of the above methods in paragraph (A) may

be used to initiate printing.

LABELASEPRODUCERSOFTWARE

LabeLaseProduceris an integrated, Windows-based application for complete control of tag design and

printing. For complete details, please refer to the ONLINE REFERENCE MANUAL supplied with the

software, or on the web at www.infosight.com/labelaseproducer3/.

Features:

The software has many features designed to provide maximum flexibility to serve the customer’s specific

marking needs. Some of these features include:

❑Control up to four (4) printers

❑Built-in and online (web access) HELP.

❑Total freedom to change tag layout whenever needed.

❑WYSIWYG (“What You See Is What You Get”) user interface for simple and intuitive tag design.

❑New features emulating popular presentation software packages to speed layout and organization of

complex designs containing multiple text and graphics fields.

❑An unlimited number of data, text, barcode and graphics fields.

❑Move fields easily with drag-and-drop.

❑Rotate fields in 90-degree increments.

❑Unlimited UNDO-REDO to easily correct mistakes.

❑Optional placement grid with snap-to placement aid.

❑Optional field anchor display shows field alignment.

❑Zoom in/out for detailed display.

❑Tag geometry features such as holes, slots, bare edges and bend lines can be shown.

❑Prints all PC-installed fonts, including all Unicode compatible fonts.

❑User-selectable download of message data from a host computer via RS-232, network TCP/IP, or

network file transfer. A wide selection of communications protocols includes InfoSight Extended,

emulation of Zebra and Intermec standard printers, and simple comma or tab-separated, flat-file

formats. Details can be found in the communications chapter of the online reference manual.

❑Operator entry of message data, for example if the host computer is unavailable.

❑Easy control over printer setup parameters such as laser speed (i.e., formerly known as the “heat”

setting for different types of laser tag material) and high/low pixel density (i.e., “draft” and

“normal” printing modes)

❑Auto-print feature for single tag printing (i.e., whenever a roll of tags is not loaded, a single tag can

be auto-printed simply by inserting the tag in the front tag slot).

❑Auto-incrementing of all text and number fields, for unattended batch printing.

PRINTER CONFIGURATION & LASER SETTINGS

The LabeLase®28XX printer and LabeLase®Producer™ software are designed with a high degree of

flexibility and user-control, to enable the system to be used in a wide range of applications and on an ever-

increasing array of laser-markable materials.

Calibration and configuration settings are accessed in LabeLase®Producer™ under SETUP-PRINTER/

CONFIGURATION. On-line help instructions will guide you through each of the available settings. The

most common parameters for fine-tuning the performance of the printer beyond the easy-to-use

LIGHTER/DARKER SLIDER BAR are LASER SPEED, LASER OFF TICKLE, and LASER ON DUTY

CYCLE, all of which are found under the LASER tab. Each of these parameters separately and together can

be adjusted to create the right balance of black/white contrast, fineness of detail and cycle time.

As laser speed is increased printing cycle time will be faster.

NOTE: In general, as laser speed increases, duty cycle may also be increased to achieve the same relative

blackness. Some materials with especially sensitive surfaces, such as PermaLabel®, will print more

consistently at lower duty cycles, and therefore correspondingly lower laser speeds. Tickle controls the

readiness of the laser to fire and helps maintain consistency of marking across the tag surface. Some tag

materials are more sensitive to power variation than others, but in most cases this parameter can be left at its

factory setting.

Each printer is calibrated in our factory before shipping. Copies of the configuration settings are shipped

with each printer.

Experience has shown the following settings to be a good starting point for the most common types of tag

material. Each individual application may then be fine tuned to achieve the right balance of cycle time,

fineness of detail, and black/white contrast.

COMMON SETUP PRINTER CONFIGURATION VALUES FOR VARIOUS MODELS

LL2860

LL2886

LL28100

Stepper Res

0.00514

Steps Per Rev

200

Usteps Per Co

Motor Min Freq

100

Motor Max Freq

1200

Reversing Takeup

Mirror Res

0.0052

Galvo Step Size

Galvo Start Marg

Galvo End Marg

Galvo Home Delay

Galvo Offset

Laser Speed

100

150

Min Speed

Max Speed

120

150

200

Laser Off Tickle

Laser Duty Cycle

Num Lasers

Tear Off

Burn Loc

3.88

CYCLE TIME CONSIDERATIONS

Tag design and printer configuration can have a significant influence on cycle time. Here

are a few techniques that, in many cases, can significantly speed printing.

1. Select DRAFT mode. When DRAFT mode is on,

stepper and mirror resolution, laser speed, font sizes, and

barcode and graphic scales are automatically adjusted to

compensate.

2. Increase laser speed (move slider bar to LIGHTER).

3. Create darker easier-to-read characters by using BOLD

font instead of a larger font size. ARIAL BLACK is

an especially efficient font for creating easy-to-ready

text.

4. Design printing to run ACROSS the tag at 90° rotation

(right angles to tag feed) rather than down the tag at 0°

rotation (parallel to tag feed).

5. Avoid boxes or other graphics with long vertical

(parallel to tag feed) lines.

6. Combine text into fewer lines. A single long line of

text is more efficient than several short lines of text (at

90° rotation).

7. Keep graphics/logo X-scale and Y-scale factors equal

to 1. If the graphic or logo must be re-sized to fit on

the tag, use an external application such as MS PAINT

to change the dimensions of the image and re-save the

BMP file before importing into Producer™.

BASIC TROUBLE SHOOTING

Service during normal business hours (Monday-Friday, 8am-5pm): 888.642.3600 or 740.642.3600

Emergency after-hours service: +1.800.401.0716 (outside the USA call +1.740.642.4666)

Red LED Status Light:

❑STEADY ON: ready to print.

❑OFF: no power to laser (power cord, key switch, power switch).

❑SLOW BLINK: out of tag stock.

❑FAST BLINK: E-STOP.

Problem: Marker does not respond to print button.

❑Check power cord.

❑Check key switch.

❑Check E-STOP.

❑Check tag stock.

❑Check serial cable to PC.

❑Producer software must be running on the connected PC.

❑Bottom of main Producer screen indicates printer status –“ONLINE”, “ESTOP” or “UNKNOWN

MODE”. If UNKNOWN MODE, check communications cable and settings.

❑From within Producer, click on HELP-ABOUT. If the FIRMWARE VERSION is blank, your PC

does not see the printer. Check communications cable and settings.

Problem: Out of tag message on PC screen.

❑Load more tag stock into printer.

❑Insert single tag in side tag slot.

Problem: Tag exiting too far or not far enough (breakoff “nick” not aligned with exit slot).

❑The printer may need to be re-calibrated. See the Troubleshooting & Maintenance / Feed and Tag

Adjustment section of the built-in help.

Problem: Tag print appears very light, fine lines appear to drop out.

❑Reduce laser speed (DARKER)

❑Increase Laser Off Tickle (SETUP-PRINTER CONFIGURATION).

❑Final output lens may require cleaning (see Maintenance section below).

Problem: Tag print shows “shadows”

❑Decrease Laser Off Tickle (SETUP-PRINTER CONFIGURATION).

Problem: Tag print not aligned correctly with breakoff “nicks” (leading & trailing edges).

❑Check that actual tag size in machine and programmed tag size in Producer (LAYOUT-SETUP-

GEOMETRY) are the same.

❑The printer may need to be re-calibrated. See the Troubleshooting & Maintenance / Feed and Tag

Adjustment section of the built-in help.

Problem: Barcode too long for tag size.

❑Reduce number of characters in barcode data.

❑Use more efficient barcode symbology.

❑Reduce barcode scale.

Problem: Blank Tag

❑No layout loaded

❑Laser overheated

NORMAL MAINTENANCE & SERVICING

Contact InfoSight for Training.

SIDE AIR FILTER REMOVAL & REPLACEMENT

The LabeLase®28XX printer includes a light-duty foam filter element, intended for use in a normal office

environment. It is not intended to protect the printer from industrial contaminants or vapors, typical of a

factory or mill environment.

As the filter element accumulates dust and pollen over time, air flow through the printer may be reduced.

This may cause excessive dust to accumulate on the internal optics (lenses and mirrors), which may shorten

their life considerably. Therefore, it is important to monitor the condition of the filter and determine the

appropriate cleaning frequency for your specific environment.

At high duty cycles when printing large batches of tags with a high percentage of black (printed) area,

reduced air flow may also cause the internal temperature sensor to automatically shutdown the laser tube

until it cools back to its normal operating temperature –this is normal.

The filter cover is located on the sides of the printer, and is held in place by snap on covers.

Carefully blow any lint or dust off the filter, or gently wash it in soap and water. Dry the filter thoroughly

before reinstalling.

Be sure to replace the filter element into the cover plate correctly.

Figure 1 Side of LL28XX Printer shown with filter and cover in place (Left); with the filter and cover removed (Middle);

and the filter and cover set aside (Right)

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