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Maintenance

5-16

5.4  Cleaning of Edge Detection Sensor and Mylar Slide
Hole

These should be cleaned when the Ink Ribbon Cassette is changed.
Note: if pressurized air is not available a Lint Free cloth may be used.

If necessary, refer to the Ink Ribbon Cassette and Mylar Cassette procedure

Pressurized Air Can

-

position the can near the sensor
and release air

Pressurized Air Can

-

position the nozzle near the
Slide Hole and release air

1

Sensor

Mylar Slide Hole

2

Summary of Contents for LB20

Page 1: ...Basic Purpose Printer LB20 User s Guide Part number EK LB20A UG 001 ...

Page 2: ...ion 1997 All rights reserved The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation Digital Equipment Corporation assumes no responsibility for any error which may appear in this document Digital conducts its business in a manner that conserves the environment and protects the safety and health of its employ...

Page 3: ...te 2 7 2 6 3 Centering the Skid 2 7 2 6 4 Raising the Carrier 2 8 2 6 5 Positioning the Ink Ribbon Cassette 2 8 2 6 6 Installing the Ink Ribbon Cassette 2 9 2 6 7 Installing the Skid 2 9 2 6 8 Removing Slack Ribbon 2 10 2 6 9 Ready to Print 2 10 3 SETUP 3 1 3 1 Introduction 3 1 3 1 1 Setup Functions 3 1 3 1 2 Setup Controls 3 2 3 1 3 Menu s and Parameters 3 2 3 1 4 Changing or Viewing the Setup 3 ...

Page 4: ... 5 2 5 1 2 Raising the Carrier 5 3 5 1 3 Removing the Skid 5 3 5 1 4 Removing the Old Ink Ribbon Cassette 5 4 5 1 5 Cleaning 5 4 5 1 6 Unpacking the New Ink Ribbon Cassette 5 4 5 1 7 Positioning the New Ink Ribbon Cassette 5 5 5 1 8 Installing the New Ink Ribbon Cassette 5 5 5 1 9 Reinstalling the Skid 5 6 5 1 10 Removing Slack Ribbon 5 6 5 2 Mylar Cassette 5 7 5 2 1 Centering the Skid 5 7 5 2 2 R...

Page 5: ...d Mylar Slide Hole 5 16 5 5 Cleaning the Feed Rollers 5 17 5 6 Ready to Print 5 18 6 SPECIFICATIONS 6 1 6 1 Printer Characteristics 6 1 6 2 Serial Interface RS232C 6 2 6 2 1 Configurable Parameters 6 2 6 2 2 Serial Connector 6 2 6 2 3 Handshaking 6 3 6 3 Parallel Interface Centronics 6 4 6 4 Documents 6 5 6 4 1 Recommendations and Restrictions 6 7 6 4 2 Passbook Thickness 6 7 6 4 3 Center Outfold ...

Page 6: ...nterIII emulation for the following types of document Passbooks vertical or horizontal seam Envelopes Forms The printer is simple to install operate and maintain and provides a guaranteed Print Quality for documents of thickness 0 0787 in 2 mm or less 1 1 Scope This User Guide contains the following chapters Introduction Installation Setup Operation Maintenance Specifications Glossary 1 2 Related ...

Page 7: ... Notes WARNING This type of safety instruction is used where there is a danger of injury to persons and or damage to the equipment or the environment The symbol inside the triangle indicates type of danger CAUTION This type of safety instruction is used where danger of injury to persons and or damage to the equipment or the environment can occur if the instruction is not followed NOTE Notes are us...

Page 8: ...with the CE mark PRODUCT DESCRIPTION Terminal Printer DIGITAL MODEL NUMBER LB20A AA LB20B AA This certificate is a confirmation of full compliance with the following regulations EEC directive 89 336 EEC Electromagnetic Compatibility EN 50081 1 Emission EN 55022 1985 EN 50082 1 Emission IEC 801 2 3 4 EEC Low Voltage Directive LVD 73 23 EEC of February 19 1973 Safety of Information technology equipm...

Page 9: ... sections and unpack the following 1 Mains Power Cable 2 Printer 3 User s Guide 4 Ribbon Cartridge Box 5 Document Guide 6 Trapdoor Note If possible store the packing carton for future use WARNING Make sure that the mains outlet connector in the building is a Class 1 outlet with protective earth easily accessible and the fuse in the building protects against earth fault ...

Page 10: ... on a flat horizontal surface in a clear area as follows 1 Back 8in 203 mm for document removal 2 Sides 4in 101mm for air cooling 3 Front 10in 254 mm for document loading Note If necessary allow further space for power and communication cable routing 2 3 1 ...

Page 11: ...Installation 2 3 2 3 Removal of transport locks 1 Lid lift and remove 2 Packing remove and discard 1 2 ...

Page 12: ...1 position the two Rear Lugs 2 lower the trapdoor to engage the Front Lock and press until a CLICK is heard 2 Lid accurately align at a b and c 3 Document Guide 1 position in the Front Cover 2 push until a CLICK is heard 1 2 1 1 3 3 1 3 2 1 2 Front Lock Front Cover ...

Page 13: ...screw driver to turn the Selector to the Mains Supply Voltage you are using 3 Mains Power Cable connect to the Printer and the Mains Supply 4 Communication Cable Connect to the Printer and the Host Computer Note The Communication cable is supplied as a separate item 1 2 3 Host Computer Selector Mains Supply Voltage Settings 4 ...

Page 14: ...n 1 Power Switch set to the ON position Station LED shows RED for six seconds and then changes to GREEN 1 Station LED Lid Caution The printer must be switched ON during this task Note If the Station LED BLINKS RED check that the Lid is correctly installed ...

Page 15: ...2 Ink Ribbon Cassette remove from the plastic bag 3 Skid unclip from the Cassette 2 6 3 Centering the Skid 1 Lid lift and remove Station LED changes from GREEN to Blinking RED 2 Button Bar press and hold down Skid moves to the center of the Carrier 3 Button Bar release 1 1 3 2 2 Station LED 3 Skid ...

Page 16: ...the Carrier 1 Carrier Buttons press in at a and Lift to b the Carrier is now locked in a tilted raised position 2 6 5 Positioning the Ink Ribbon Cassette 1 Ink Ribbon Cassette position on the top and sides of the Carrier 1 1 Carrier ...

Page 17: ...k Ribbon Cassette 1 Ink Ribbon Cassette push until a CLICK is heard at each side of the Carrier 2 6 7 Installing the Skid 1 Skid locate in the bottom of the Head Carrier Assembly 2 Skid push until a CLICK is heard 1 1 2 Head Carrier Assembly ...

Page 18: ...til the Ink Ribbon is tight 2 Carrier hold at a lower to b and ensure the Printhead locates in the Slider 2 6 9 Ready to Print 1 Lid install and align at positions a b and c Station LED changes from Blinking RED to GREEN 1 1 Station LED Printhead Slider Ink Ribbon 2 2 ...

Page 19: ...etting consists of assigning a value to a parameter where Parameters are shown vertically under each Menu Values are shown horizontally next to the Parameter Software Settings are held in a matrix where Parameters matrix vertical plane are reached using a Setup Function which advances the document under the printhead Values matrix horizontal plane are reached by using a Setup Function which moves ...

Page 20: ...from the start and end point QUIT OR SELECT Printer Settings are printed from the VIEW point Thus the structure is QUIT OR SELECT COM Menu IBM Menu DOC Menu DFT Menu HQD Menu VIEW Note The COM menu is not used or shown in a Parallel Printer The Parameter s in each Menu for a Serial Printer are COM IBM DOC DFT HQD Baud rate Country Cover offset Draft coarse HQD coarse Length Set Horz psbk seam Draf...

Page 21: ...lank document or an existing document is used Moving to VIEW or a Menu Serial Printer have 5 Menu s Parallel Printer have 4 Menu s Printing Current Settings from the VIEW point Changing a Setting moving to a Menu a Parameter and then assigning a new Value Validating printing to check the change or changes Quitting from the QUIT point ...

Page 22: ...Setup 3 4 3 2 Setup Example The Factory Default Setup is shown below The above example was produced by performing the procedure Printing the Printer Settings ...

Page 23: ... release Station LED blinks GREEN within 6 seconds 2 4 1 Station LED 3 Note If a document is not loaded OR a document is loaded and no further actions are taken the print engine will run for 2 minutes stop and the Station LED will show RED and BLINK Setup may be entered again by pressing the Button Bar down for less than one second Hit ...

Page 24: ... least 8in 203mm but less than 8 5in 217mm wide and at least 10in 254mm long must be used 1 Document feed along the Left Edge of the Document Guide until the document is gripped Note If the document covers the Marker the printer will return the document forward over the Document Guide 1 Marker Left Edge Document Guide ...

Page 25: ...ond Hit Document a advances to the Trailing edge b print of menu s are performed c returns with the Skid pointing at the QUIT OR SELECT point 2 Menu s and VIEW are visible above the FW Level that s installed 3 Button Bar Tab Horizontally Hit until the Skid is above the selection you require 1 3 Skid Number of Hits Horizontal Tabs 2 ...

Page 26: ...ument 3 Tab Horizontally TWICE the Skid points to the IBM Menu 4 Select IBM press and hold down the Button Bar until the engine runs and the document moves Print functions follow and the list CURRENT SETTINGS will be visible 5 Tab Vertically 2 TIMES the FONT values DRAFT and HQD are visible 6 Tab Horizontally 2 TIMES the Skid points to HQD LOAD the selection press and hold down the Button Bar unti...

Page 27: ...ment you have just used in step 11 above 13 Button Bar press and hold down until the document is returned forward and ejected 3 3 Setup Check Prerequisite 1 The Configuration Settings that your department will use Prerequisite 2 The printer s Current Settings Note Perform Printing the Current Settings on page 2 3 8 1 Compare prerequisite 1 with prerequisite 2 The Current Settings are the same as t...

Page 28: ... on Serial Printers only It is used when changing the Communication Settings The Baud Rate values are 19200 9600 4800 2400 and 1200 Baud Further Parameters and Values are Parameter Length bits Stop Bits number Parity Flow Control Value 7 1 Even RTS CTS Value 8 2 Odd XON XOFF Value None 3 4 2 IBM Menu The standard IBM Proprinter III parameters are used where The Country values are USA Code Page 437...

Page 29: ... Factory Default Setting HQD High Quality Draft The CPI Characters Per Inch values are 10 12 17 or 20 The LPI Lines Per Inch values are 5 6 or 8 Condensed 17 CPI The CR LF Auto Line Feed values are Yes or No Automatic Line Feed LF after each Carriage Return CR The LF VT CR Auto Carriage Return values are Yes or No Automatic Carriage Return CR after each Line Feed LF or Vertical Tabulation VT The F...

Page 30: ...n 15 mm 3 4 3 DOC Menu This Menu is concerned with Documents and the parameter values that must be set so that documents are handled correctly All documents Form and or Passbook Psbk must be measured A value for each of the following parameters must be set Top Offset Psbk Seam Type Psbk Width min Psbk Range Horz Psbk Seam Cover Offset ...

Page 31: ...Setup 3 13 The values are shown along the Parameter line in the DOC Menu printout which follows ...

Page 32: ...he highest position The Top Offset values are 0 0 1in 2 54mm Factory Default Setting Note Mechanical Top Margin Top Offset 1 Up to 0 6in 13 3mm 2 Up to 1 1in 27 94mm 3 Up to 1 6in 40 64mm 4 Up to 2 1in 53 34mm The printer uses an Optical Sensor to measure width During the measuring process the sensor must not cross a black area Therefore if a Form or Envelope is preprinted with a black area on the...

Page 33: ... 101 6mm 5in 127mm Factory default value 6in 152 4mm 7in 177 8mm The printer will handle a document as a Passbook only when the width lies within the Pbsk width min Pbsk range If your Passbook Types have different widths calculate Psbk range see the next parameter and then return here 1 Measure the Passbook Width and use the value which is nearest and less than Psbk width min ...

Page 34: ...mum width measured 2 Add an appropriate Psbk range value to the set Psbk width min value so that all Passbook Widths measured are in range The Horz Psbk Seam values are 2 5in 63 5mm 3in 76 2mm 3 5 in 88 9mm 4 in 101 6mm and 4 5 in 114 3mm This setting indicates the seam location with respect to the top of the passbook cover If the measured result is between two of the following then select the sma...

Page 35: ...Up to 2 1in 53 34mm This setting defines the location of the top edge of an inside sheets with respect to the top edge of a Passbook Psbk Printing is unidirectional above a Cover Offset and bi directional below Measure the Cover Offset and use one of the following values If the Passbook Seam is horizontal and the Cover Offset is greater than 0 the printer will smooth the document ...

Page 36: ... Draft Fine 1 Factory Default Setting 2 3 and 4 This define the printing speed in firing units 3 4 5 HQD Menu The Horizontal Alignment of a printed line in bi directional HIGH QUALITY DRAFT HQD can be adjusted This is done in two steps HQD COARSE and HQD FINE Perform the following 1 Print the HQD menu settings 2 Look at the printout and chose the HQD COARSE and HQD FINE settings indicated on the s...

Page 37: ... 1 Power Switch ON or OFF 2 Button Bar having two functional periods Press down and release in less than one second Hit Press down hold and release when printer reacts 2 sec 3 Lid Installed or Removed 4 Four Status LED s RED static indication only 5 Station LED RED or GREEN static and blinking indications 6 Document Guide helps to ensure correct document loading 2 3 4 6 5 1 ...

Page 38: ...Status LED s x On Station Error Corrective 4 3 2 1 LED Action x Blink RED NVM failure Perform setup x Blink RED Lid open Install correctly x RED Initialization Call service x x RED Motors Call service x x RED Edge detectors Call service x x x RED Motors Edge Call service RED CPU error Call service 4 2 Documents When the printer is switched on and the print engine is running documents fed over the ...

Page 39: ... than 8 7in 221mm ensure it touches the Left Edge of the Document Guide 2 Insert when the Station LED blinks GREEN 3 Button bar hit for less than 1 sec and release Document is fed in and the width is measured If the document is inserted incorrect it is ejected out and a new insertion has do be done aligning to the Left Edge If it s inserted correctly printing will start Caution Do not load documen...

Page 40: ... the printing press and hold the Button Bar for more than 10 seconds 4 2 4 Clearing Document Jams 1 Power set to OFF 2 Lid lift and remove 3 Carrier raise and secure in open position 4 Document remove by pulling from the front or rear of the printer ...

Page 41: ...f the printer or to keep up the lifetime The following Parts can be replaced New parts can be ordered from your Supplier Part Order Number Ink Ribbon Cassette 2S AA374 AA Mylar Cassette 2S AA373 AA Printhead 29 33361 01 Note All Replacement Parts should be stored at room temperature Caution Unless otherwise stated the printer should be switched ON during all Maintenance Tasks ...

Page 42: ...er printing approximately 2 5 million characters 5 1 1 Centering the Skid 1 Lid lift and remove Status LED s LED 1 is ON others are OFF Station LED changes from GREEN to Blinking RED 2 Button Bar press and hold down Skid moves to the center of the Carrier 3 Button Bar release 1 Station LED Skid 2 3 Status LED s ...

Page 43: ...5 1 2 Raising the Carrier 1 Carrier Buttons press in at a and Lift to b Carrier is now locked in a tilted raised position 5 1 3 Removing the Skid 1 Skid lift until a CLICK is heard 2 Skid pull forward and remove 1 1 2 ...

Page 44: ...eaning Perform the following Mylar Cassette slider refer to the procedure on page 4 5 7 Edge Detection Sensor and Mylar Slide Hole refer to the procedure on page 4 5 16 5 1 6 Unpacking the New Ink Ribbon Cassette 1 Box and plastic bag open the packing 2 Ink Ribbon Cassette remove from the plastic bag 3 Skid unclip from the Cassette 2 1 3 2 1 2 3 ...

Page 45: ...ng the New Ink Ribbon Cassette 1 Ink Ribbon Cassette position on the top and sides of the Carrier 5 1 8 Installing the New Ink Ribbon Cassette 1 Ink Ribbon Cassette Push until a CLICK is heard at each side of the Carrier 1 1 Carrier ...

Page 46: ...the Head Carrier assembly 2 Skid push until a CLICK is heard 5 1 10 Removing Slack Ribbon 1 Green Wheel turn until the Ink Ribbon is tight 2 Carrier hold at a lower to b and ensure the Printhead locates in the Slider 1 1 2 Head Carrier assembly Printhead Slider Ink Ribbon 2 2 ...

Page 47: ...is replaced or when excessive document jams are experienced Mylar edges and surfaces may be damaged when in contact with a sharp or hard object such as a paper clip or staple 5 2 1 Centering the Skid 1 Lid lift and remove Station LED changes from GREEN to Blinking RED Status LED s LED 1 is ON others are OFF 2 Button Bar press and hold down Skid moves to the center of the Carrier 3 Button Bar relea...

Page 48: ...s in at a and Lift to b the Carrier is now locked in a tilted raised position 5 2 3 Removing the Mylar Cassette 1 Left and right hand a push on each handle using a finger b press on the wire with each thumb 2 Mylar Cassette remove from the printer 1 1a Wire 2 1a 1b ...

Page 49: ...es for damage as follows 1 From Cylinder to Cylinder move the Slider and check for damage 2 From Slider to Left Cylinder move the Slider and check that the complete edge stays OUT 3 From Slider to Right Cylinder move the Slider and check that the complete edge stays IN Slider 1 Right Cylinder 2 3 Left Cylinder ...

Page 50: ...ovement Top View 1 Slider move full left to full right 5 2 6 Reinstalling the Mylar Cassette 1 Left hand and right hand a use a Finger to push on the Handles b use a Thumb to press on the Wire 2 Mylar Cassette install 1 2 1a Wire 1aa 1b Handles ...

Page 51: ...5 11 5 2 7 Positioning the Slider 1 Slider position under the Printhead 2 Carrier hold with each finger and lower the Carrier from a to b and ensure the Printhead locates in the center of the Slider 2 Printhead 1 2 ...

Page 52: ... indicate a pin in the Printhead is not operating or is broken A Pin will be damaged when is strikes a sharp or hard object such as a paper clips or staple 5 3 1 Preparation Perform the following Power Up Centering the Skid Raising the Carrier Removing the Ink Ribbon Cassette Caution The Printhead may be hot Be carefull when touching the printhead ...

Page 53: ...nd lift to remove the Trapdoor 3 Printhead Tool position in the Printhead Assembly 5 3 3 Releasing the Printhead 1 Carrier support to keep the Carrier raised 2 Printhead Tool a push into the Printhead assembly b squeeze the arms until a CLICK is heard and then release the arms 1 2 3 Printhead Assembly 1 2a Arms Printhead Assembly 2b 2 ...

Page 54: ...5 14 5 3 4 Lowering the Carrier 1 Carrier hold at a lower to b and ensure the Printhead locates in the Slider 5 3 5 Removing the Printhead 1 Printhead grip between thumb and finger and remove 1 Printhead Slider 1 1 ...

Page 55: ...Maintenance 5 15 5 3 6 Reinstalling the Printhead 1 Printhead locate the Clip and Lock Clip in the Printhead Assembly 2 Printhead push down until a CLICK is heard 1 2 Printhead Assembly Lock Clip Clip ...

Page 56: ...s changed Note if pressurized air is not available a Lint Free cloth may be used If necessary refer to the Ink Ribbon Cassette and Mylar Cassette procedure 1 Pressurized Air Can position the can near the sensor and release air 2 Pressurized Air Can position the nozzle near the Slide Hole and release air 1 Sensor Mylar Slide Hole 2 ...

Page 57: ... Bar press for less than one second Hit Status LED s ooxo where x ON 3 Button Bar press down for longer than 2 sec and then release Station LED blinks GREEN 4 Cleaning Sheet load see Loading a Document 5 Button Bar press until the Station LED shows GREEN and then release Cleaning Sheet printer runs the Feed rollers some seconds and then the Cleaning Sheet is feeded a number of times Station LED bl...

Page 58: ... operational mode Printer is set to On Line Status ready for receiving data and printing 1 If necessary reinstall the Parts by performing the tasks as described on previous pages reverse order 2 Lid install and align at positions a b and c Station LED changes from Blinking RED to GREEN 2 Station LED ...

Page 59: ...cy Draft Mode at 30 print contrast signal after printing 2 5 million characters Stock shelf life 2 years max Power Supply Frequency Power Consumption 100 120 V or 200 240V 50 60 Hz 120VA max 30VA idle Power Cord Requirements For 115V operation UL listed and CSA certified type SVT 18 3 AWG rated minimum 10A 125V For 230V operation Use HAR type HO5 VVF 3G1 0 Temperature Operating and Non operating 1...

Page 60: ...Stop Bits 1 2 Parity odd even none Flow Ctrl RTS CTS XON XOFF 6 2 2 Serial Connector Located at the rear of the printer is a 9 Pin male DSUB The pin assignments and signals between printer host are as follows Printer Connector 9 pin Signal Description Source Host Connector 9pin 25pin 1 2 3 4 5 6 7 8 9 DCD RXD TXD DTR GND DSR RTS CTS Not Used Receive Data Transmit Data Data Terminal Ready Signal Gr...

Page 61: ...that the Printer is busy and cannot receive data CTS The interface monitors this signal which must be HIGH for the interface to transmit XON and XOFF where XON DC1 Hexadecimal 11 XOFF DC3 Hexadecimal 13 6 2 3 Handshaking This is either XON XOFF or RTS CTS with the Flow Control according to Setup A Buffer full treatment is performed according to Flow Control when the available space is 10 bytes XON...

Page 62: ...trobe Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 Acknowledge Printer Busy Paper End Printer On Line Not Used Not Connected Ground Layer Not Connected Pull Up to 5V Gnd 1 Gnd 2 Gnd 3 Gnd 4 Gnd 5 Gnd 6 Gnd 7 Gnd 8 Gnd 9 Gnd 10 Gnd 11 Gnd 31 Soft Reset Printer Error Gnd 36 Not Connected Not Connected Not Used 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3...

Page 63: ...2 0 5 mm Maximum Thickness 0 08 2 mm 0 08 2 mm Top Bottom Left Right Minimum Margin 0 25 6 35 mm 0 25 6 35 mm Minimum Seam Margins 2 x 0 31 8 mm 2 x 0 39 10 mm Form Sizes and minimum margins are Documents 8 7 221 mm Documents 9 5 241 mm Width 2 5 63mm to 8 7 221mm 2 5 63mm to 9 5 241mm Length 2 5 63mm to 14 5 368mm 2 5 63mm to 14 5 368mm Ratio Length Width Up to 2 5 Up to 2 5 Left Margin Single pl...

Page 64: ...100 g m2 11 to 24 lb 40 to 90 g m2 22 to 32 lb 80 to 120 g m2 11 to 22 lb 40 to 80 g m2 Total weight 16 to 32 lb 60 to 120 g m2 26 to 52 lb 100 to 200 g m2 16 to 77 lb 60 to 280 g m2 To handle this number of copies you must use the minimum allowed weight for each sheet To allow for varying paper quality the recommended minimum weight is 65g m2 The paper for a Passbook should be Maximum Total Thick...

Page 65: ...The shortest form must have a minimum length of 7 3 185 mm and the software must eject the form at the rear of the printer Multi ply forms can consist of up to 3 copies plus the original Multi ply forms with carbon sheets are not supported The single part sheet and the top sheet of a multi ply form should be either white or a light color for maximum print contrast When preprinted lines are require...

Page 66: ... When the passbook is opened at the middle page the height of the bulge at the center outfold shall not exceed 0 01 0 3 mm 6 4 4 Passbook Squareness When the passbook is closed the edge of the shorter side must be at a 90 angle to the longer side ...

Page 67: ...g of characters in a line Sometimes referred to as pitch or density CPS Characters Per Second CSA Canadian Standards Association CTR Confidence Test Routine Performed by the printer at power on CTS See RTS CTS Character Set a table of characters each associated with an ASCII code in a given font that can be printed Ctrl Control DCD Data Carrier Detect DPI Dots Per Inch Draft printing in single str...

Page 68: ...ope HQD High Quality Draft Two consecutive dot impacts are delivered double strike Hz Hertz The measuring unit for frequency cycles per second ISO International Standards Organization IEC International Electrotechnical Commission Intercharacter Spacing the space left blank between two consecutive characters Loadable Character Set where resident and or downloaded characters are used LPI Lines Per I...

Page 69: ...ation the host turns the printer s CTS line on RX Receive RXD Receive Data Resident Character Set permanently available in the printer Reversed where characters are printed in white against black Stop bit The bit which signals the end of data SVT Standard Voltage Temperature TX Transmit TXD Transmit Data Underscore To draw a line under printed characters and spaces UL Underwriters Laboratory Unidi...

Page 70: ...Printed in Sweden on Totally Chlorine Free paper TCF ...

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