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(5) ESC 0

input of the ESC 0 causes the subsequent line spacing to be set at 1/8 inch.

(6) ESC2

Input of the ESC 2 causes the subsequent line spacing to be set at either 1/6
inch or 1/8 inch depending on the initial set condition of the DIP switch pin 1-1.

(7)

VT

(Vertical Tabulation)

See paragraph 3.1 (3) above.

(8) ESC B +

+

+ + + NUL

( 1

This code specifies the vertical tab stop positions.
The first 8 valid tab stops per page are recognized in the Printer and subse-

quent tab stops are ignored.

A tab stop set at a line exceeding the form length specified by ESC C + n is ig-

nored. If the form length is set to 66 lines upon initial power application, the

last tab stop

should be less than 66.

Tab stop numbers must be received in incremental numerical order.

To execute tabulation, the VT code should be input. Once vertical tab stops are

established, the data will be valid until new tab stops are specified. If no tab
stop is set, the VT code behaves like the LF code. Therefore, the paper is ad-
vanced one line after printing.
Receipt of “ESC B” code causes the Printer to accept the following codes as tab
stop line numbers until the NUL code is input. The lack of the NUL code will
cause incorrect data printout.

The form length must be set by “ESC C + 0 + m” or “ESC C+n” code prior to set-
ting tab stops. The VT setting is cancelled by input of “ESC C + n” code. There-
fore, the tab setting should then be established again. Input of “ESC B” code fol-

lowed by only the NUL code cancels predetermined tab stops.

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Summary of Contents for MX-82

Page 1: ...M X 8 2 EPSON DOT MATRIX PRINTER Operation Manual MX MX 82 F T EPSON P8190027 2 ...

Page 2: ...Copyright 0 1981 by EPSON Shinshu Seiki Co Ltd Nagano Japan All rights reserved The contents of this manual are subject to change without notice ...

Page 3: ...ent 15 8 Power Connection 16 INSTALLATION OF MX 82 F T 17 1 Unpacking 17 1 1 Unpacking steps 17 1 2 Repacking steps 17 2 Counting the Parts 18 3 Installation of the Printer 19 4 Cartridge Ribbon Setting 22 5 Separator Installation 23 6 Mounting and Dismounting of Tractor Unit 24 7 Paper Loading 25 7 1 Fanfold paper 25 7 1 1 Loading of fanfold paper 25 7 1 2 Removal of fanfold paper 27 7 1 3 Column...

Page 4: ...T IS THE MX 82 53 1 What is a Dot Matrix Printer 53 2 Definition of Some Terms Often Used 56 3 Control Codes in the Text Mode 58 4 Control Codes in the bit Image Mode 69 MAINTENANCE 80 1 Preventive Maintenance i3 2 Parts Replacement SPECIFICATIONS 82 APPENDIXES 85 1 Construction of MX 82 and MX 82 F T 85 1 1 Printer mechanism 85 1 2 Control circuit board 85 1 3 Power circuit 88 1 4 Printer initial...

Page 5: ... Fig 20 Laying Printer on Firm Surface 19 Fig 21 Assembly Tools 20 Fig 22 Removal of Shipping Screws 20 Fig 23 Removal of Printer Lid 2 1 Fig 24 Cartridge Ribbon Setting I 22 Fig 25 Cartridge Ribbon Setting 22 Fig 26 Examples of Correct and Incorrect Ribbon Setting 23 Fig 27 Separator Installation 23 Fig 28 Dismounting of Tractor Unit 24 Fig 29 Mounting of Tractor Unit 24 Fig 30 Insertion of Fanfo...

Page 6: ... Fig 63 Relationship between Data and Dot Wires 71 Fig 64 Data Transfer Sequence in Bit Image Mode 72 Fig 65 Example of Graphic Pattern Formation 73 Fig 66 Normal Density and Dual Density Modes 75 Fig 67 Examples of Bit Image Printing 76 Fig 68 Expressions of Brightness 77 Fig 69 Replacement of Print Head 79 Fig A1 1 Control Circuit Diagram 84 Fig A1 2 Driver Circuit Diagram 85 Fig A2 1 Parallel I...

Page 7: ...d Text Bit Image Mode Bit Image printing refers to the hard copy production of illustrations graphs charts etc on the Printer by activating 8 dot wires respectively under software control A one chip microcomputer performs all system control and the two built in stepper motors of the printer control the carriage movement and paper feeding functions re spectively Therefore versatile software control...

Page 8: ...zes a 48 characters line enlarged character b 79 characters line enlarged condensed character c 96 characters line normal character d 159 characters line condensed character e Programmable column length 4 Versatile functions to meet various business applications a Top of Form page length setting in line or inch units is possible with initial setting to 11 or 12 inches b Skip over perforation 1 inc...

Page 9: ...packing material on a table or any other conven ient flat surface 5 Take off the packing materials carefully 6 Remove the vinyl cover 1 2 Repacking steps Repacking can be carried out by following the above steps in the reverse order Re packing Shipment for repair storage etc NOTE It is recommended that all original packing materials be saved for reuse in case the MX 82 requires reshipment in the f...

Page 10: ...L 2 Separato 3 Cartridge Ribbon 1 MizizGkL European Type 1 MX 82 1 2 Separator 1 3 Cartridge Ribbon 1 4 Power Only European Type 220 240V 1 5 MX 82 Operation Manual 1 Fig 2 Contents of Carton ...

Page 11: ...ight or where a great deal of greasy dust exists in the air NOTE Greasy dust may cause the malfunction of the print head c Connect the power cord to an outlet separated from those connected to elec tric noise generating equipment such as large power motors refrigerators etc d Do not subject the Printer to temperatures below 5 C 4O F or above 35 C 95 F during operation to sudden changes in temperat...

Page 12: ... disassemble or assemble the printer 1 Phillips type screwdriver 1 pc 2 Round blade type screwdriver 1 pc Philli Fig 4 Assembly Tools 4 Removal of shipping screws The purpose of the shipping screws is to protect the MX 82 against any damage that may be caused by shocks or vibrations during transportation Before operat ing the MX 82 remove the screws as described below See Fig 5 STEP 1 Stand the pr...

Page 13: ...and the printer lid upright 2 Push the printer lid toward the right and pull up its left side See Fig 6 Fig 6 Removal of Printer Lid 0 When remounting the printer lid be sure to observe the following steps STEP 1 Fit the right side of the printer lid onto the projection located at the right corner of the Printer s upper case See Fig 7 2 Fit the left side of the printer lid onto the left projection...

Page 14: ...e the cartridge ribbon setting be sure to hold the projection at the center of the cartridge case when pushing the cartridge ribbon down See Fig 8 Cartridge Ribbon I Fig 8 Cartridge Ribbon Setting 4 Put the ribbon between the head nose and the ribbon mask In this case the ribbon can be set easily by hooking it to the edge of the head nose and turning the ribbon feeding knob of the cartridge case i...

Page 15: ...tting of the ribbon may cause it to come off 2 Confirm that the ribbon is neither twisted nor creased and that the car tridge is set properly I Ribbon kRibbon Mask Incorrect Incorrect Correct I Fig 10 Examples of Correct and Incorrect Ribbon Setting L 9 ...

Page 16: ...tes fanfold paper from 4 to 10 in width To load the fanfold paper observe the following procedure STEP 1 Raise the printer lid 2 Turn the scale toward the front of the Printer and detach it from the platen 3 Confirm that the paper guide roller is at the center of the sprocket shaft If not set it at the center of the shaft NOTE The paper guide roller contributes to smooth paper feeding 4 Raise the ...

Page 17: ... Push the paper into the insertion slot between the paper guides at the rear part of the printer mechanism NOTE Be sure to pass the paper beneath the upper paper guide 6 After the leading edge of the paper has emerged from the Printer pull it out gently to some length 1 1 ...

Page 18: ... paper feed holes of the paper on the feeding pins push the scale back into position and adjust the tension of the paper Then push the paper holding covers and the two sprocket lock levers down See Fig 14 NOTE In this case confirm that the feeding pins are centered in the re spective paper feed holes of the paper Fig 14 Engagement of Paper Feed Holes on Feeding Pins 1 2 ...

Page 19: ...anfold Paper Set Completely NOTE When the MX 82 is to be used on a desk or a bench arrangement of the fanfold paper in parallel with the MX 82 as shown below will permit the paper to be folded in an accordion style I I _ Fig 16 Example of Paper Arrangement 1 3 ...

Page 20: ...which the first print line lies on the form and this position is determined when the power switch is turned on Namely adjust the paper position by the manual paper feed knob so that the re quired line position i e the point at which the first line of the form is desired to be printed is at the print head level If at this point power is applied to the printer this line position automatically become...

Page 21: ... the gap NOTE With a thick paper be sure to widen this gap 2 Adjust the position of the head adjusting lever according to the type of paper to be used Paper Position of adjusting lever Single leaf paper Set the lever to the 4th step Carbon paper sheets Set the lever to the 7th step 3 Should printed characters become faint due to the use of the printer for an ex tended period move the head adjustin...

Page 22: ...e Printer After connection of the Printer to the proper power source and upon application of power to the Printer Initialization will take place in the Printer with the effects described in para graph 1 4 Appendix 1 If your MX 82 has a primary AC rating different from the available power source do not attempt to operate the Printer Please obtain a re placement unit with the correct AC rating from ...

Page 23: ... holding its underside and lifting it straight up with the packing materials attached 4 Place the Printer with the packing material on a table or any other conven ient flat surface 5 Take off the packing materials carefully 6 Remove the vinyl cover 1 2 Repacking steps Repacking can be carried out by following the above steps in the reverse order Repacking Shipment for repair storage etc NOTE It is...

Page 24: ...listed contents missing or evident damage contact the store where you purchased the MX 82 F T as soon as possible Dot Matrix Printer European Type 5 Operation Manual 1 MX 82 F T 1 2 Separator 1 3 Cartridge Ribbon 1 4 Power Cord Only European Type 220 240V 1 5 MX 82 F T Operation Manual 1 Fig 19 Contents of Carton 1 8 ...

Page 25: ...e it may be exposed to direct sunlight or where a great deal of greasy dust exists in the air NOTE Greasy dust may cause the malfunction of the print head c Connect the power cord to an outlet separated from those connecterd to electric noise generating equipment such as large power motors refrigera tors etc d Do not subject the Printer to temperatures below 5 C 40 F or above 35 C 95 F during oper...

Page 26: ...mble or assemble the printer 1 Phillips type screwdriver 1 2 Round blade type screwdriver 1 I Fig 21 Assembly Tools 4 Removal of shipping screws The purpose of the shipping screws is to protect the MX 82 F T against any da mage that may be caused by shocks or vibrations during transportation There fore before operating MX 82 F T remove the screws as described below See Fig 22 STEP 1 Stand the prin...

Page 27: ...Rough or careless han dling of the printer lid may result in damage to or even breakage of its hinges STEP1 Stand the printer lid upright 2 Push the printer lid toward the right and pull up its left side See Figs 23 1 and 2 Printer Lid 1 Standard 2 Option Fig 23 Removal of Printer Lid NOTE The printer lid shown in Fig 23 2 is an optional accessory 2 1 ...

Page 28: ...idge ribbon setting be sure to hold the projection at the center of the cartridge case when pushing the cartridge ribbon down See Fig 24 Fig 24 Cartridge Ribbon Setting 4 Put the ribbon between the head nose and the ribbon mask In this case the ribbon can be set easily by hooking it to the edge of the head nose and turning the ribbon feeding knob of the cartridge case in the direction of the arrow...

Page 29: ...correct Ribbon Incorrect Ribbon Mask I Correct Fig 26 Examples of Correct and Incorrect Ribbon Setting 5 Separator Installation The separator of the Printer contributes to smooth paper feeding Set the separator by inserting its edge into the two holes located at the rear part of the frame of the printer mechanism See fig 27 S e p a r a t o r Fig 27 Separator Installation 2 3 ...

Page 30: ...TEP 1 Release the lock levers of the tractor unit by pulling in the direction as shown in Fig 28 2 Keep pulling the levers and pull up the tractor unit Lock Lever Fig 28 Dismounting of Tractor Unit To install the tractor unit hook the notches of the tractor frames onto the shaft shown in Fig 29 and then push down the tractor unit Fig 29 Mounting of Tractor Unit 2 4 ...

Page 31: ...r guide roller contributes to smooth paper feeding 5 Raise the two paper holding covers and be sure to insert the fanfold paper between the frame and plastic roller of the separator See Fig 30 Paper Holding Cover Release Paper hide Roller IN OUT Roller Side view r 7 Lever Frame Scale Fig 30 Insertion of Fanfold Paper 6 Push the paper into the insertion slot between the paper guides at the rear par...

Page 32: ... feed holes of the paper on the feeding pins push the scale back into position and adjust the tension of the paper Then push the paper holding covers and the two sprocket lock levers down See Fig 32 NOTE In this case confirm that the feeding pins are centered in the re spective paper feed holes of the paper Do not lock the release Fig 32 Engagement of Paper Feed Holes on Feeding Pins 2 6 ...

Page 33: ...n accordion style Fig 34 Example of Paper Arrangement 7 1 2 Removal of fanfold paper To remove the fanfold paper follow either of the two methods described below 1 To disengage the paper from the paper holding mechanism pull it forward out of the Printer NOTE Do not attempt to pull out the paper in the backward direction 2 Feed the paper out of the Printer by electrical operation For this turn the...

Page 34: ...t line of the form is desired to be printed is at the print head level If at this point power is applied to the Printer this line position automatically becomes the Top of Form position When printing forms the matchmarks located on both the sprockets facilitate the setting of the Top of Form position on the fanfold paper To set the Top of Form po sition first enter or preprint a mark at a position...

Page 35: ...If not set it at the center of the shaft See Fig 36 NOTE The paper guide roller contributes to smooth paper feeding 5 Insert the end of the roll paper between the frame and the plastic roller of the separator See Fig 36 Fig 36 Loading of Roll Paper 1 6 Push the paper into the insertion slot between the paper guides at the rear part of the printer mechanism See Fig 37 NOTES 1 Be sure to pass the pa...

Page 36: ... the printer lid 2 Unlock the release lever See Fig 39 3 Pull the scale toward the front of the Printer to detach the scale from the platen See Fig 39 4 Confirm that the paper guide roller is at the center of the sprocket shaft If not set it at the center of the shaft NOTE The paper guide contributes to smooth paper feeding 5 Insert the cut paper sheet between the paper guides at the rear part of ...

Page 37: ... clockwise confirm that the paper advances straight up See Fig 40 Manual Paper Feed Knob Fig 40 Adjustment of Inserted Paper Position If not adjust the inserted paper position as follows a If the cut paper sheet or form is long enough unlock the release lever and align the side edges of the paper as shown in Fig 41 ...

Page 38: ...dges align the top edge of the paper with the form position setting mark on the tractor unit See Fig 42 Fig 42 Form Position Setting Mark The print area on the cut paper sheet is shown in Fig 43 210 mm 8 3 218 mm f8 5 m5 8 5 8 mm 1 28 6 or 30 2 mm c sE 012 123 CDE 234 305 mm 2 J7 q Fig 43 Print Area 3 2 ...

Page 39: ...e paper bottom edge 2 If the paper is set on the line marked 1 4 as shown in Fig 44 then the printing starts from a position 28 6 mm below the top edge of the paper If the paper is set on the line marked 1 8 then the printing starts from a position 30 2 mm below the top edge of the paper 8 Push the scale back into position and put the printer lid on the Printer See Fig 45 Fig 45 Printer with Cut P...

Page 40: ...lever backward in the 0 direction by one step See Fig 46 When a set of carbon paper sheets is used be sure that no characters are print ed within the area two lines each above and below the perforation 8 Power Connection The EPSON MX 82 F T Dot Matrix Printer is capable of operating on the following three types of AC power 1 115V AC 60Hz 2 220V AC 50 Hz 3 240V AC 50 Hz Before connecting the MX 82 ...

Page 41: ...Head Adjusting Le BBackward M Forward I Head Adjusting Lever Side view Fig 46 Gap Adjustment 3 5 ...

Page 42: ...ch on check to see if the paper is properly set in the printer Incorrect setting of the paper may prevent the Printer from operating properly ON LINE SW When the power switch is turned on after paper has been loaded the Printer enters the ON LINE mode and can be utilized in conjunc tion with a host computer Depressing the ON LINE switch will set the Printer in the OFF LINE mode The switch does not...

Page 43: ...t operating the Printer set the paper at the appropriate Top of Form position The paper advances while this switch is being depressed The line spacing for paper advancement is determined by ESC A n code described later When the Power switch is turned on the line spacing is initialized at 1 6 inch The line feed operation is prohibited while the Printer is actively en gaged in printing 1 2 Indicator...

Page 44: ...inter initial check Take the following steps and become familiar with the Printer START 7 Interface cable Turn on POWER Check the LF FF Contact your nearest EPSON dea er qg x Fig 48 Printer Initial Check 3 8 ...

Page 45: ...d the signals on the interface connector change to the following status and the printing operation stops Table 1 Interface Signals in Paper Out Status To reactivate the printing take the following procedure as shown in Fig 49 Buzzer behind POWER READY t 1 I I PAPER OUT I Push the LF switch to take out I 1 ONLINE remaining paper FF Set new paper Control panel J PAPER OUT indicator off ON LINE indic...

Page 46: ...rol code ESC 8 and the paper end detecting function will become invalid softwarewise 4 Self Test The MX 82 MX 82 F T has a self test self diagnostic function to check the follow ing 1 Print head operation and printing quality 2 Operation of the printer mechanisms motor cartridge ribbon mechanism belt etc The self test function is pre programmed and can be performed by turning the POWER switch on w...

Page 47: ...ntrol modes are select able by the two built ion DIP switches The DIP switches SW1 and SW2 located on the control circuit board of the Printer are as shown in Fig 54 To gain access to the DIP switches the upper case of the Printer must be removed NOTE Turn the power off whenever you attempt to open up the printer case Ad equately discharge static electricity which might be charged in your body or ...

Page 48: ...o the screws won t fall off when you tip the printer right side up Fig 51 Loosening All 4 Screws Tip the printer right side up again Gently loosen the upper case Lift up the cover from the left side And then pull out the wires hooked to the control panel on the right See Fig 52 Upper case Lead wire Fig 52 Pulling Out Wires Hooked to Control Panel 4 2 ...

Page 49: ...rmer and filter cir cuit board and a control panel See Fig 53 Construction of the Printer Transformer Control panel I I Transformer filter circuit board ter mechanism MX 82 or MX 82 F T Dot Matrix Printer Driver circuit board 7 1 i cd female HMTP board Control circuit board J Controller Fig 53 Construction of the Printer 4 3 ...

Page 50: ...ard See Fig 54 The switches set to the left are ON to the right are OFF See Fig 55 I SW 1 Fig 55 Setting DIP Switches Each switch No of the DIP switch functions as described below So set these swit ches to suit your application or the computer s specifications NOTE Be sure that the POWER switch of the printer is turned off before changing switch positions 4 4 ...

Page 51: ... the OFF position Always leave it in the ON posi tion 5 SW1 6 This pin is used to activate or inactivate the paper end detector When this pin is turned on the paper end detecting function becomes invalid upon power application and the Printer is allowed to operate even if it is out of paper With the Printer in this state input of control code ESC 9 will permit the paper end detector to be activate...

Page 52: ...use of these two pins and SW1 7 permit selection of the international character set for U S A France Germany England Denmark Sweden Italy and Spain as shown in Table 5 upon power application 2 SW2 3 This pin is used to fix AUTO FEED XT signal internally Refer to the ex planation of control code CR in paragraph 3 1 1 WHAT IS THE MX 82 This signal line is wired ORed with the pin No 14 of the interfa...

Page 53: ...nal Character Set Designation according to the combination of the DIP switch setting Table 5 International Character Set Designation The above settings can be changed to any country character sets by inputting ESC R n control codes Described later The above countries characters are addressed as per the following table Table 6 International Character Sets 24 I b l 7c 6 0 6 b 7D 1 ij a a 6 1 7E I3 i...

Page 54: ...length per page number of columns per line automatic skip over perforation etc for selection under the control of both hardware DIP swit ches and software control codes which is described later In Figs 56 through 59 setting sequence of these functional specifications are illustrated 1 8 inch ESC0 c 4 ESC0 118 0 inch Fig 55 Setting Amount of Line Spacing 4 8 ...

Page 55: ...Y E S 12 inch ESCCtn ESCC O m The skip over perforation function if previously set will be reset at this point Fig 57 Setting Form Length per Page 4 9 ...

Page 56: ...Power ON 7 96 columns Normal Emphasized SI or ESCSI 4 print print DC2 0 I Fig 58 Setting Number of Columns per Line 5 0 ...

Page 57: ...l inch skip over YES perforation function not provided NO l inch skip over perforation function provided ESCN n i 1 t ESC 0 Fig 59 Setting Skip over Perforation Function 5 1 ...

Page 58: ...ion except pre designed matrix The full graphics or full dot image print may be easier to under stand But we define its print mode as Bit Image 1 What is a Dot Matrix Printer As you know many kinds of printers are marketed in the world and they may be classified by categories such as impact or non impact printing method line or serial printing method and so on Broadly speaking the EPSON MX 82 belo...

Page 59: ...ly Each dot wire is driven by an electromagnet which fires when told to do so by the electronics inside the printer Signals from the computer cause the appropriate dot wires to be fired from the holder and to impact carbon causing the character to be printed as a series of dots Head guide s s I 2 c Dot wire Dot Wire l 0 0 0 3 Head movement direction Dot Wire 7 z Head movement direction Fig 60 Dot ...

Page 60: ...ange from 1 72 to 85 72 See what happens when you set the line spacing to 1 8 and 1 6 Look at the following figures a and b The line spacing i e the pitch from the top of upper g or G character to the top of the g or G on the next line is 1 8 That corresponds to 9 dot skipping If you type a g on the first line and a G on the next line the two characters will be close to each other This is a little...

Page 61: ...ge the code used in computer systems The MX 82 has 96 character set and control codes In addition it has an inter naitonal character set as shown in a previous chapter Those characters are put in some addresses of the ASCII code table instead of the standard characters And those can be accessed by a particular control code or the DIP switch Alphabets numbers and special symbols are addressed from ...

Page 62: ...t Image Mode is co vered in the following section The MX 82 has been designed as a terminal unit capable of various software con trols When control codes are transferred to the Printer respective functions go verned by these codes such as form feed line feed etc are executed immediately In order to permit the Printer to fully exhibit these functions careful reading and thor ough understanding of t...

Page 63: ...er au tomatically begins to print the data stored in the print buffer In this case if AUTO FEED XT is at LOW level the paper is advanced one line after printing 2 If no data precedes the CR code or if all preceding data is SPACE the carriage assembly does not operate Under this condition if AUTO FEED XT is at LOW level only paper feeding is performed 3 When all 96 columns of data are SPACE the car...

Page 64: ... DIP switch 1 1 set in the OFF position or 1 8 inch with the DIP switch pin 1 1 set in the ON position 3 2 Paper formatting codes 1 HT Horizontal Tabulation The HT code carries out the horizontal tabulation to a predetermined position set by ESC D up to 12 positions The tab setting exceeding the column length set by the DIP switch or ESC code will be ignored In enlarged character mode the tab sett...

Page 65: ...H 15 H m ABCDEF m GHI m JKL EiiJpJ PRINT AECDEF GHI J KL 4 In case of transferring two HT codes at a time DATAI IEsCDj 5 H A H 15 H m ABED m i ACEl m EFGH m m PRINT AbCD EFGH 3 ESC Q n The print column width can be specified by inputting ESC Q n code n repre sents the print column width to be specified in character size at the time of in put 12ns96 normal character and emphasized character IS ns 1...

Page 66: ...board 2 The ESC A n code may be input at any position on a line How ever once the code is input the specified amount of line spacing will remain unchanged until a code for new line spacing is set Example To specify the amount of line spacing at 7 72 inches DATA AAAAAAAAAAAA JCRIpl AAAAAAAAAAAA IEJILF AAAAAAAAAAAA mpj NOTE How to input n When n is actually transferred to the Printer as data it is t...

Page 67: ... 66 Tab stop numbers must be received in incremental numerical order nk 5 nk t To execute tabulation the VT code should be input Once vertical tab stops are established the data will be valid until new tab stops are specified If no tab stop is set the VT code behaves like the LF code Therefore the paper is ad vanced one line after printing Receipt of ESC B code causes the Printer to accept the fol...

Page 68: ...be defined by the number of lines using the amount of line spacing set by the ESC A n code With the ESC C O H m code the form length can be defined as an absolute quantity in unit of inches 2 Input of ESC C code cancels the VT set by ESC 6 and the skipover perforation set by ESC N 3 0 H denotes hexadecimal 00 1 1 ESC N n n 0 for setting skip over perforation The ESC N n code is used to set the ski...

Page 69: ...print ed out in enlarged double width characters This code is cancelled by the printing operation or the input of DC 4 code and can be input at any column position on a line Therefore normal size and enlarged characters can be mixed on the same line NOTE With normal size and enlarged characters mixed on the same line when any enlarged character is at the 95th column position in terms of normal siz...

Page 70: ...condensed enlarged characters double width of condensed characters can be printed This condition is can celled by DC 4 code or LF code and the character size returns to condensed 1 DATA LS ABCDEFGHIJKL m Eg PRINT ABCDEF WI JKL 2 DATA ABC m DEF m GHIJKL ERj ifl PRINT IIBCDEFGH 13 KL 3 ESC SO This code functions the same as the SO code 4 ESC SI This code functions the same as the SI code 5 DC 4 Devi...

Page 71: ...40 CPS while printing emphasized characters 1 DATAI E ABCDEFGHI ICR ILF LPR INTI CIBCDEFGHI 2 DATA m ESCE ABCDEFGHI m m PRINT ABCDEFGH I 8 ESC F The ESC F code cancels the emphasized printing mode 9 ESC R n for international character set 0 S n 5 7 When the ESC R n code is input all data that follows it will be printed out in a country character set which is specified by n It will be valid until s...

Page 72: ...PRINT AAFIAACCCCC 2 DATA AAAAA DC BBBBB m CCCCC DC CRI m PRINT bEIBEGJ 3 ESC 8 Escape 8 to ignore the Paper End detector The ESC 8 code makes it possible to transmit data even if there is no paper in the Printer Since this code causes the PE signal to be ignored data may be printed to the last page of the form without waste of paper With the DIP switch pin l 6 on the control circuit board set in t...

Page 73: ... way of handling graphics For example in the CBM computer there is a set of 64 special graphic characters that can be used to draw and plot with On the other hand the APPLE II computer has no graphic characters but a rich variety of graphic statements that allow you to control any dot in a 280 by 193 screen matrix As well as the latter APPLE II the MX 82 has no character generated graphics but all...

Page 74: ...i and nz specified in excess of 576 dot positions are ignored and printing of the bit image data after the 576th dot position is not guaranteed Mixing of text data and bit image data is possible on the same line NOTE Assign values to nr and nz respectively as follows n2 ni I I i I 1 I i MSB LSB MSB LSB 215 216 213 212 2 210 29 28 2 26 25 24 23 22 2 20 As shown above nl is set hexadecimally as low ...

Page 75: ...data C Bit image data D 576 bit image positions Ex 3 Input data t nz ni I Printing Ex 4 Bit image data transfer by standard BASIC program To check for proper coversion to the Normal density Bit Image mode execute the following program PRINT 6 9 ...

Page 76: ...ame as with the ESC K normal den sity bit image printing but bit image printing can be performed in twice the dot den sity in the horizontal direction as with the ESC K In other words bit image data can be printed in 1152 dot positions per line thus permitting to produce denser graphic data NOTE Mixing of normal density bit image with dual density bit image on a line is at your option as well as m...

Page 77: ...etween Data and Dot Wires If a bit is 1 the print head fires If a bit is 0 the print head does not fire For ex ample assume that data are given as follows B7 0 B6 0 B5 1 B4 0 B3 0 B2 0 Bl 1 BO O 22 67 0 B6 1 B5 0 B4 1 B3 0 B2 0 Bl 0 BO O 50 where a box with 0 denotes the bit 1 and a blank box denotes the bit 0 Ac cording to Appendix 4 Code Table you can define 00100010 2 as 22 H and 01010000 2as 5...

Page 78: ...OD 256 300 MOD 256 44 D 2c H n2 INT Amount of data 256 INT 300 256 l D ol H You can also use Appendix 4 code Table to find the corresponding hexadecimal numbers to the decimal numbers The schematic of data transfer sequence in the Bit Image mode is shown in Fig 64 ESC code I t CHR 27 L code L t CHR 76 I 1 Number of data n1 1 1 Numberof data n2 1 n Data MOD 256 n2 INT Data 2561 CHR n 1 HCHR n Fig 6...

Page 79: ...as shown in Fig 65 a program such as shown below must be executed However this program has been developed using stan dard BASIC language If extended BASIC is to be used the program must be changed according to the features of the language In addition if data is to be transferred through an interpreter of BASIC etc the data transfer rate is extremely slow In such a case it is recommended to effect ...

Page 80: ......

Page 81: ... normal density printing a Normal density b Dual density Fig 66 Normal Density and Dual Density Modes NOTE Print alignment under the friction feed EPSON is carefully applying printer mechanisms of better quality for MX 82 F T However due to the nature of friction feed in which paper may slip it is not available to use the bit image mode while feeding the cut sheet or the roll paper in the MX 82 F ...

Page 82: ... 4 Example of CRT screen dump hard copy This print example is made using APPLE II computer and the demonstration diskette Fig 67 Examples of Bit Image Printing 7 6 ...

Page 83: ...pression of dot density a l oe a A a Data will be transmitted in order of AA H and then 55 H em 8 dot line spacing l ee o me l oae 0 c Data will be transmitted in order of FF H and then 8 dot line spacing Data will be transmitted in order of two CC H and 33 11 8 dot line spacing oo H then two Fig 68 Expressions of Brightness 7 7 ...

Page 84: ... the print head unit should occur the operator should contact the store from which the printer was purchased 2 Print head In case of a print head trouble or a worn dot wire replace the print head unit as described below See Fig 69 NOTE Be sure to replace the print head after it has cooled STEP 1 Turn the power off 2 Take off the printer lid and cartridge ribbon 3 Turn the head lock lever clockwise...

Page 85: ...hold this Carnage Assembly connector firmly lo pull the head cable out straight Side View Take hold of the cable at the point izicated by ariows o and apply force in either of the direc tions indicated by arrow c to push in or pull out the head cable Fig 69 Replacement of Print Head 7 9 ...

Page 86: ...Cut paper sheet Copies Paper Path 9 INTERFACES Standard Optional 10 INKED RIBBON Color Type Life Expectancy 9 x 9 Full 96 character ASCII with descenders plus 8 international character sets Selectable by DIP SW or programmable Characters per inch Maximum characters per line 12 96 6 48 19 9 159 9 9 79 Adjustable sprocket pin feed and or friction feed for MX 82F T MX 82 MX 82 F T 4 to 10 4 to 10 101...

Page 87: ...midity 10 to 80 non condensing 13 POWER REQUIREMENT Voltage 115V 60Hz 220 240V 50 Hz Current 1 Amp maximum Power Consumption 100 VA maximum 14 PHYSICAL CHARACTERISTICS MX 82 MX 82F T Height 107 mm 4 2 133 mm 5 2 Width 374 mm 14 7 374 mm 14 7 Depth 305 mm 12 0 305 mm 12 0 Weight 5 5 kg 12 Ibs 7 0 kg 15 4 Ibs Specifications subject to change without notice 8 1 ...

Page 88: ...position at any given time and the print head is stopped at the last printing position Then the CPU seeks the shor test travel way to the next print line This feature and bidirectional printing enable the Printer to perform the logical seeking function which minimizes the head travel time to the next print line 2 Stepper motor for paper feed Paper is fed by the stepper motor like the head carriage...

Page 89: ...Fig Al 1 Control Circuit Diagram ...

Page 90: ...nitialization is accomplished in either of the two ways described below 1 initialization takes place automatically each time the primary AC power source is interrupted and reapplied i e by turning the Power Switch off and on 2 Initialization may be initiated remotely by activating the INIT signal to the parallel intmfara rnnnartnr Thic Iinn chmnlrl ha A cm hw a Tfl r war nr it n i alant ...

Page 91: ...9 X 2SD986 HI D H LFA 0 LFA LFC 0 LFD Fig A1 2 Driver Circuit Diagram 8 6 ...

Page 92: ...als Connector pin assignment and descriptions of respective interface signals are provided in Table A2 1 Table A2 1 Connector Pin Assignment and Descriptions of Interface Signals These signals represent information of the 1st to 8th bits of parallel data respectively Each signal is at HIGH level when data is logical 1 and LOW when logical 11 28 29 ACKN LG BUSY out I out Approx 5 s pulse LOW indica...

Page 93: ...d its pulse width must be more than 50 at the receiving terminal The level of this signal becomes LOW when the printer is in 1 PAPER END state 2 OFF LINE state 3 Error state Same as with Pin Nos 19 to 30 Not used Pulled up to 5V through 3 3k G resistance Data entry to the printer is possible only when the level of this signal is LOW Internal fixing can be carried out with DIP SW pin l 8 The condit...

Page 94: ...an be carried out only after con firming the ACKNLG signal or when the level of the BUSY signal is LOW 4 Data transfer sequence Fig A2 1 shows the sequence for data transmission BUSY ACKNLG DATA STROBE Fig A2 1 Parallel Interface Timing Relations among the ON LINE switch SLCT IN signal DC l DC 3 code and inter face signals are shown in Table A2 2 below Table A2 2 Relations among ON LINE SLCT IN DC...

Page 95: ...o the OFF LINE position of the ON LINE switch In the ERROR status the Printer is not in the Selected state SLCT LOW 3 The DC 1 DC 3 code is valid under the condition that the DIP switch pin l 8 is OFF Namely the level of SLCT IN at the pin No 36 of the inter face connector is HIGH With SLCT IN at LOW level the Printer is al ways placed in the Selected state and the DC 1 DC 3 code is not valid 4 Wh...

Page 96: ...I Hex o I 2 3 4 I I No 5 617 8 9 A 6 c D I I S I l l Ic ...

Page 97: ...APPENDIX 4 Character Fonts 21 Hex Code 20 23 24 25 26 27 ti i i iJ 29 28 2c 20 2E 38 3c 3E 3F 46 28 32 42 38 48 49 4A 48 4c 40 4E AF 60 52 9 2 ...

Page 98: ...58 59 5A 50 5c 5D 5E 5F 69 69 6A 6B 6C 6D 78 79 7A NOTE Numbers represent Hex 73 78 liiiil 7c 7D 7E 93 ...

Page 99: ...FRANCE 40 7D 5B 5c 5D 78 7c 7E GERMANY liiiil 7D 5B 5c 5D 70 7E ENGLAND 23 DENMARK 5c 5D 78 70 SWEDEN 24 5c 5D 60 70 7c 7D 7E ITALY 58 5D 60 78 7c 7D 7E ...

Page 100: ...SPAIN 23 55 5c 50 78 7c 9 6 ...

Page 101: ... Turns off the condensed Device Control 3 Deselects printer Not ready to Device Control 4 Turns off the enlarged character Escape ASCII code for Escape Precedes numbers IP L and alphabets ESC 0 30 48 Sets a line spacing to 8 lines per inch 61 ESC 2 32 50 Sets a line spacing to 6 lines per inch 61 ESC 8 38 56 Deselects paper end detector 66 ESC 0 4F 79 ESC Q 51 81 ESC R 52 82 Releases skip over per...

Page 102: ...erference to radio or television reception which can be determined by turning the equipment off and on the user is en couraged to try to correct the interference by one or more of the following measures reorient the receiving antenna relocate the computer with respect to the receiver move the computer away from the receiver plug the computer into a different outlet so that computer and receiver ar...

Page 103: ...St Torrance Ca 90505 Phone 213 539 9140 Telex 182412 EPSON DEUTSCHIAND GMBH Am Seestern 24 4000 Diisseldotf 11 F R Germany Phone 0211 5961001 Telex 8584786 EPSON U K LTD Sherwood Howe 176 Northolt Road South Harrow HA2 OEB U K Phone 01 422 5612 Telex 8814169 01 422 1118 PRINTED IN JAPAN 82 02 06 ...

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