Epson MX-80 F/T Type II Operation Manual Download Page 88

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APPENDIX 1

Construction of MX-80 Type II

and MX-80 F/T Type II

The EPSON MX-80 Type I I and MX-80 F/T Type II dot matrix printers (hereinafter

referred to as “Type II Printer”) consist of the following three major functional

blocks.

(1) Printer Mechanism

(2) Control Circuit Board

(3) Power Circuit

These three blocks are housed in a plastic case and are connected to one another.

1.1. Printer mechanism

The printer mechanism has been developed by EPSON Shinshu Seiki C

., Ltd.,

with the latest technology in the precision and electronic industry fields.

The printer mechanism contains two stepper motors. One is to move the print

head to the next print column position, and the other is to advance the paper.

(1) Stepper motor for head carriage

The stepper motor for head carriage is controlled under LSI “8041” called

“slave CPU”.

The CPU knows the current printing position at any given

time and the print head is stopped at the last printing position. Then, the CPU

seeks the shortest 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. One complete

rotation of the stepper motor corresponds to 1/3 inch paper advance, In the

Type II Printer, the operator can select any paper feed length under software

control.

(3) Print head

The print head has 9 dot wires to form 9 x 9 dot matrix characters.

9 wires form more legible characters than those formed by 7 wires. The print

head for the printer mechanism is quite compact.

1.2. Control circuit board

In this paragraph, the printer LSI circuitry is outlined. The control circuit diagram

is shown in Fig. Al-l, and the driver circuit diagram in Fig. Al-2.

- 8 3 -

Summary of Contents for MX-80 F/T Type II

Page 1: ...M X 8 0 EPSON DOT MATRIX PRINTER TYPE II Operation Manual EPSON P8190014 2 ...

Page 2: ...djustment 15 8 Power Connection 15 INSTALLATION OF MX 80 F T TYPE II 17 1 Unpacking 17 1 1 Unpacking steps 17 1 2 Repacking steps 17 2 Counting the Parts 17 3 Installation of the Printer 18 4 Cartridge Ribbon Setting 22 6 Separator Installation 23 6 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 Colum...

Page 3: ...Paper formatting codes 3 3 Character designation codes 3 4 Other codes 4 Control Codes in the Bit Image Mode 4 1 Normal density bit image mode setting by ESC K n1 n2 4 2 Dual density bit image mode setting by ESC L nl n2 4 3 Relationship between data and dot wires 4 4 How to obtain nI a n d n2 4 5 Programming examples MAINTENANCE 1 Preventive Maintenance 2 Parts Replacement SPECIFICATIONS APPENDIX...

Page 4: ...ig 18 Gap Adjustment 16 Fig 19 Contents of Carton 18 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 21 Fig 24 Cartridge Ribbon Setting 22 Fig 25 Cartridge Ribbon Setting 22 Fig 26 Examples of Correct and Incorrect Ribbon Setting 23 Fig 27 Separator Installation 2 3 Fig 28 Dismounting of Tractor Unit 24 Fig 29 Mou...

Page 5: ...Fig 57 Setting Form Length per Page F i g 5 8 S e t t i n g N u m b e r o f C o l u m n s p e r L i n e Fig 59 Setting Skip over Perforation Function Fig 60 Dot Wire Fig 61 Formation of Character E Fig 62 Line Spacing Fig 63 Relationship between Data and Dot Wires Fig 64 Data Transfer Sequence in Bit Image Mode Fig 65 Example of Graphic Pattern Formation Fig 66 Normal Density and Dual Density Mode...

Page 6: ...Column Length Table 4 Functions and Conditions of DIP Switch No 2 Table 5 International Character Set Designation T a b l e 6 I n t e r n a t i o n a l C h a r a c t e r S e t s Table A2 1 Connector Pin Assignment and Descriptions of Interface Signals Table A2 2 Relations among ON LINE SLCT IN DC1 DC3 and Interface Signal 39 45 46 46 47 47 8 7 8 9 ...

Page 7: ...microcomputer performs all system control and the two built in stepper motors of the printer control the carriage movement and paper feeding functions respectively Therefore versatile software controls such as form feed programmable line spacing and skip over perforation are at your disposal In addi tion various interface options are available to permit handshaking with most VSBC computers In addi...

Page 8: ...enlarged condensed character c 80 characters line normal character d 132 characters line condensed character e Programmable column length 3 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 automatic skip over function selectable by DIP switch setting or varia...

Page 9: ...e packing material on a table or any other convenient flat surface STEP 5 Take off the packing material carefully STEP 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 recommended that all original packing materials be saved for reuse in case the MX 80 Type II requires re...

Page 10: ...1 MX 80 Type I I Dot Matrix Printer 1 2 Separator 1 3 Cartridge Ribbon 1 4 Power Cord Only European Type 220 240V 1 5 MX 80 Type I I Operation Manual 1 Fig 2 Contents of Carton 4 ...

Page 11: ...e I I in places where 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 connected to electric noise generating equipment such as large power motors refrigera tors etc d Do not subject the Printer to temperatures below 5 C 4O F or above 35...

Page 12: ...pare tools Prepare the following two tools to disassemble or assemble the printer 1 Phillips type screwdriver 1 pc 2 Round blade type screwdriver 1 pc Phillips Type Fig 4 Assembly Tools 4 Removal of shipping screws The purpose of the shipping screws is to protect the MX 80 Type II against any damage that may be caused by shocks or vibrations during transportation Therefore before operating the MX ...

Page 13: ...stacle when removing the shipping screws be sure to take off the printer lid by observing the following steps Rough or careless handling of the printer lid may result in damage to or even breakage of its hinges STEP 1 Stand the printer lid upright STEP 2 Push the printer lid toward the right and pull up its left side See Fig 6 Fig 6 Removal of Printer Lid 7 ...

Page 14: ...n Setting EPSON s Cartridge Ribbon is compact long lasting and very easy to set and remove Furthermore you have no need to soil your fingers in handling it STEP 1 Open the printer lid or remove it STEP 2 Confirm that the scale paper retainer is turned toward the platen and is touching STEP 3 Push the cartridge ribbon down and set it on the printer mechanism To facilitate the cartridge ribbon setti...

Page 15: ...ge case in the direction of the arrow i e counterclockwise while depressing the ribbon with a ball point pen Then tension the ribbon by turning the ribbon feeding knob counterclockwise See Fig 9 I Fig 9 Cartridge Ribbon Setting NOTES 1 Incorrect setting of the ribbon may cause it to come off See Fig 10 2 Confirm that the ribbon is neither twisted nor creased and that the cartridge is set properly ...

Page 16: ...fold paper from 4 to 10 in width To load the fanfold paper observe the following procedure STEP 1 Raise the printer lid STEP 2 Turn the scale toward the front of the Printer and detach it from the platen STEP 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 STEP 4 Ra...

Page 17: ...to 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 STEP 6 After the leading edge of the paper has emerged from the Printer pull it out gently to some length l l ...

Page 18: ...the 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 respective paper feed holes of the paper Fig 14 Engagement of Paper Feed Holes on Feeding Pins 1 2 ...

Page 19: ...an accordion style Fig 16 Example of Paper Arrangement 6 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 20: ...n 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 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 position first enter ...

Page 21: ...ackward in the direction by one step See Fig 18 4 When a set of carbon paper sheets is used be sure that no characters are printed within the area two lines each above and below the perforation 8 Power Connection The EPSON MX 80 Type II Dot Matrix Printer is capable of operating on the fol lowing three types of AC power 1 115V AC 60Hz 2 220V AC 50Hz 3 240V AC 50Hz Before connecting the MX 80 Type ...

Page 22: ... 1 6 ...

Page 23: ... packing material on a table or any other convenient flat surface STEP 5 Take off the packing material carefully STEP 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 recommended that all original packing materials be saved for reuse in case the MX 80 F T Type I I require...

Page 24: ...our layout may look like Fig 20 NOTE Rubber feet are provided to prevent the marring of the surface on which the MX 80 F T Type I I is placed b Avoid operating the MX 80 F T Type I I in places where 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 ...

Page 25: ...paper inserted between the inner and outer paper guides to protect the paper end detector from damage due to shocks or vibrations during transportation Before using the Printer be sure to remove this paper If the MX 80 F T Type II is to be reshipped remember to return it to the original position 3 Prepare tools Prepare the following two tools to disassemble or assemble the printer 1 Phillips type ...

Page 26: ...2 1 STEP 1 Stand the printer on its left side STEP 2 Remove with a screwdriver the two shipping screws visible on the underside of the lower case Right Side of the Printer NOTE Save the two shipping screws for possible future use SUPPLEMENT If the printer lid is an obstacle when removing the shipping screws be sure to take off the printer lid by observing the following steps Rough or careless hand...

Page 27: ...STEP 1 Stand the printer lid upright STEP 2 Push the printer lid toward the right and pull up its left side See Figs 23 1 and 2 NOTE The printer lid shown in Fig 23 2 is an Optional accessory 2 1 ...

Page 28: ...mechanism To facilitate 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 24 STEP 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...

Page 29: ...the cartridge is set properly 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 I Fig 27 Separator Installation 2 3 ...

Page 30: ...STEP 1 Release the lock levers of the tractor unit by pulling in the direction as shown in Fig 28 STEP 2 Keep pulling the levers and pull up the tractor unit 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: ...ot set it at the center of the shaft NOTE The paper guide roller contributes to smooth paper feeding STEP 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 Fig 30 Insertion of Fanfold Paper STEP 6 Push the paper into the insertion slot between the paper guides at the rear part of the printer mechanism NOTE ...

Page 32: ...ush 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 respective paper feed holes of the paper Do not lock the release lever Paper Holding Covers Sprocket Lock Lever Fig 32 Engagement of Paper Feed Holes on Feeding Pins 2 6 ...

Page 33: ...in an accordion style 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 Power Switch on and push the Li...

Page 34: ...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 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 position first enter or...

Page 35: ...r is at the center of the sprocket shaft If not set it at the center of the shaft See Fig 36 NOTE The paper guide roller contributes to smooth paper feeding STEP 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 STEP 6 Push the paper into the insertion slot between the paper guides at the rear part of the printer ...

Page 36: ...e Fig 39 STEP 3 Pull the scale toward the front of the Printer to detach the scale from the platen See Fig 39 STEP 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 STEP 5 Insert the cut paper sheet between the paper guides at the rear part of printer mechanism NOTE The pape...

Page 37: ...e confirm that the paper advances straight up See Fig 40 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 3 1 ...

Page 38: ...de edges 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 when printing it with the tractor unit installed is shown in Fig 43 Fig 43 Print Area 3 2 ...

Page 39: ...f the paper is set on the line marked l 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 l 8 then the printing starts from a position 30 2 mm below the top edge of the paper STEP 8 Push the scale back into position and put the printer lid on the Printer See Fig 45 Fig 45 Printer with Cut Paper Sheet Set Com...

Page 40: ...in the direction by one step See Fig 46 4 When a set of carbon paper sheets is used be sure that no characters are printed within the area two lines each above and below the perforation 9 Power Connection The EPSON MX 80 F T Type I I Dot Matrix Printer is capable of operating on the following three types of AC power 1 115V AC 60Hz 2 220V AC 50Hz 3 240V AC 50Hz Before connecting the MX 80 F T Type ...

Page 41: ... 3 5 ...

Page 42: ... 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 conjunction with a host computer Depressing the ON LINE switch will set the Printer in the OFF LINE mode and cause the green LED to go out The switch does not function while t...

Page 43: ...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 l 6 inch The line feed operation is prohibited while the Printer is actively engaged in printing 1 2 Indicators P...

Page 44: ...1 3 Printer initial check Take the following steps and become familiar with the Printer 3 8 ...

Page 45: ...uide detects that the paper is nearly exhausted the signals on the interface con nector change to the following status and the printing operation stops Table 1 Interface Signals in Paper Out Status Signal Pin No ERROR 32 Status LOW level PE Paper End BUSY ACKN LG 12 HIGH level 11 HIGH level 10 No pulse is output To reactivate the printing take the following procedure as shown in Fig 49 Fig 49 Flow...

Page 46: ...r control code ESC 8 and the paper end detecting function will become invalid softwarewise 4 Self Test The MX 80 Type I I has a self test self diagnostic function to check the following 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 ...

Page 47: ...e printer case Adequately discharge static electricity which might be charged in your body or it may cause damages to internal electronic parts such as LSl s IC s etc Remove the manual paper feed knob black knob on the right side by pulling it straight out with firm but steady pressure See Fig 50 I Fig 50 Removing Manual Paper Feed Knob Turn the printer upside down on a soft surface With a Phillip...

Page 48: ...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 Fig 52 Pulling Out Wires Hooked to Control Panel 4 2 ...

Page 49: ...See the inside of the printer before you set the switches The printer consists of a printer mechanism a controller a transformer and filter circuit board and a control panel See Fig 53 4 3 ...

Page 50: ... 54 The switches set to the left are ON to the right are OFF See Fig 55 Each switch No of the DIP switch functions as described below So set these switches 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 ON position Always leave it in the OFF position 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 activated...

Page 52: ...FF 1 inch skip over perforation Valid Invalid ON 1 SW2 1 2 2 Combined 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 applica tion 2 SW2 3 This pin is used to fix AUTO FEED XT signal internally Refer to the explanation of control code CR in paragraph 3 1 1 WHAT IS THE ...

Page 53: ...ble 5 shows International Character Set Designation according to the combina tion 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 4 7 ...

Page 54: ...ne spacing form length per page number of columns per line automatic skip over perforation etc for selection under the control of both hardware DIP switches and software control codes which is described later In Figs 56 through 59 setting sequence of these functional specifications are illustrated Fig 56 Setting Amount of Line Spacing 4 8 ...

Page 55: ...Fig 57 Setting Form Length per Page 4 9 ...

Page 56: ...Fig 58 Setting Number of Columns per Line 5 0 ...

Page 57: ...Fig 59 Setting Skip over Perforation Function 5 1 ...

Page 58: ...matrix The full graphics or full dot image print may be easier to understand 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 80 Type I I belongs to the follo...

Page 59: ...ppropriate dot wires to be fired from the holder and to impact carbon causing the character to be printed as a series of dots As an example see Fig 61 to print the letter E dot wires 1 through 7 are fired first They hit the ribbon That makes marks on the paper Then the head shifts over a bit and dot wires 1 4 and 7 are fired In this manner the character E is formed This is called Dot Matrix Printi...

Page 60: ...t 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 2 characters will be close to each other This is a little bit hard to read in a long message including upper case characters and lower case ones In other uses however this line spacing is effective You can understand its effectiveness when using the bit image mode On the other hand with ...

Page 61: ...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 2O H to 7E H and from A0 H t o F E H So same characters are put in two different addresses The selection of which one to use is up to you if your machine has an 8 bit data bus line 2 Escape cod...

Page 62: ...ontrols When control codes are transferred to the Printer respective functions governed 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 thorough understanding of the following control codes are recommended In this section first the control codes in text mode are classified into groups These ...

Page 63: ...eding is performed 3 When all 80 columns of data are SPACE the carriage assembly does not operate Under this condition if AUTO FEED XT is at LOW level or if the DIP switch pin 2 3 on the control circuit board is ON only paper feeding is performed 2 LF Line Feed When the LF code is input all data in the print buffer is printed and the paper is advanced one line NOTE If no data precedes the LF code ...

Page 64: ...tion 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 setting will not be effective and will be ignored 2 ESC D n1 n2 nk N U L This code specifies the horizontal tab stop positions n denotes column position where the print head stops The first 12 tab stops per...

Page 65: ... width can be specified by inputting ESC Q n code n represents the print column width to be specified in character size at the time of input normal character condensed character enlarged character enlarged condensed character 5 9 ...

Page 66: ...trol circuit board 2 The ESC A n code may be input at any position on a line However once the code is input the specified amount of line spacing will remain un changed until a code for new line spacing is set Example To specify the amount of line spacing at 7 72 inches D A T A PRINT NOTE How to input n When n is actually transferred to the Printer as data it is transferred in the form of a 7 bit b...

Page 67: ...ast tab stop nk D should be less than 66 Tab stop numbers must be received in incremental numerical order n k 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 advanced one line after printing Receipt of ESC B code causes...

Page 68: ... lines using the amount of line spacing set by the ESC A n code With the ESC C 0 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 B and the skip over perforation set by ESC N 3 0 H denotes hexadecimal 00 11 ESC N n n 0 for setting skip over perforation The ESC N n code is used to set the skip over perforation function...

Page 69: ...h 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 79th column position in terms of normal size character this position becomes th...

Page 70: ... per line in terms of condensed size character When the SO code is received after the input of the SI code condensed enlarged characters double width of condensed characters can be printed This condition is cancelled by DC 4 code or LF code and the character size returns to condensed 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 De...

Page 71: ...characters The speed of the head carriage reduces to 40 CPS while printing emphasized characters 8 ESC F The ESC F code cancels the emphasized printing mode 9 ESC R n for international character set 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 specified by other ESC R n code n represents one of...

Page 72: ...inter 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 the ON position the Printer is placed in the ESC 8 condition upon application of power 4 ESC 9 Escape 9 This code cancels the ESC 8 condition and reinstates the PE signal Therefore the Printer cannot receive...

Page 73: ...r 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 80 Type II has no character generated graphics but allow you to control all the 8 needles freely and programmably by means of the so called Bit Image To do that you have to switch the printer from the t...

Page 74: ... high order two digits In the normal density bit image processing the maximum number of dot positions printable per line is 480 Therefore the values of nl and n2 specified in excess of 480 dot positions are ignored and printing of the bit image data after the 480th dot position is not guaranteed Mixing of text data and bit image data is possible on the same line NOTE Assign values to n1 and n2 res...

Page 75: ...ram To check for proper conversion to the Normaldensity Bit Image mode execute the following program PROGRAM 150 REM bit image printing 160 LPRINT CHR H1B K CHR H50 CHR H0 170 FOR N 1 TO H50 180 LPRINT CHR HFF 190 NEXT 200 LPRINT CHR HA 210 GO TO 160 6 9 ...

Page 76: ...e same as with the ESC K normal density bit image printing but bit image printing can be performed in twice the dot density in the horizontal direction as with the ESC K In other words bit image data can be printed in 960 dot positions per line thus permitting to produce denser graphic data NOTE Mixing of normal density bit image with dualdensity bit image on a line is at your option as well as mi...

Page 77: ...he print head fires If a bit is 0 the print head does not fire For example assume that data are given as follows where a box with denotes the bit 1 and a blank box denotes the bit 0 According to Appendix 3 Code Table you can define 00100010 2 as 22 H and 01010000 2 as 50 H As you can see the first 4 bits are defined from column and the second 4 bits are defined from row Namely 0101 2 5 H and 0600 ...

Page 78: ... 300 then n1 and n2 may be derived as follows n1 Number of data MOD 256 300 MOD 256 44 D 2C H n2 INT Number of data 256 INT 300 256 1 D 0 1 H You can also use Appendix 3 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 Fig 64 Data Transfer Sequence in Bit Image Mode 7 2 ...

Page 79: ... as shown in Fig 65 a program such as shown below must be executed However this program has been developed using standard 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: ... 2 Normal density bit image printing 74 ...

Page 81: ...ent under the friction feed EPSON is carefully applying printer mechanisms of better quality for MX 80 Type II and MX 80 F T Type II 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 80 F T Type I I If the accuracy of line feed is critical the fanfold paper must be used 7 5 ...

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: ... 5 Example of expression of brightness using the Bit Image Mode Fig 68 Examples of Expression of Brightness 7 7 ...

Page 84: ...other than the print head unit should occur the operator should contact the store from which the Type I I 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 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 Turn the power off Take off the printer lid and c...

Page 85: ...Fig 69 Replacement of Print Head Take hold of the cable at the point indicated by arrows and apply force in either of the direc tions Indicated by arrow to push in or pull out the head cable 7 9 ...

Page 86: ...m per inch characters per line Normal 10 80 Enlarged 5 40 Condensed 16 5 1 3 2 Condensed Enlarged 8 25 66 8 M E D I A H A N D L I N G Paper Feed Adjustable sprocket pin feed and or friction feed for MX 80 F T TYPE II Paper Width Range MX 80 Type II MX 80 F T Type II Fanfold paper 4 to 10 4 to 10 101 6 mm to 254 mm 101 6 mm to 254 mm Roll paper 8 5 0 12 215 9 3 mm Cut paper sheet 8 3 to 8 5 210 mm ...

Page 87: ...0 to 80 non condensing 13 POWER REQUIREMENT Voltage 115v 60Hz 220 24OV 50Hz Current 1 Amp maximum Power Consumption 100 VA maximum 14 PHYSICAL CHARACTERISTICS MX 80 TYPE II MX 80 F T TYPE II 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: ...lave CPU The CPU knows the current printing position at any given time and the print head is stopped at the last printing position Then the CPU seeks the shortest 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 ...

Page 89: ......

Page 90: ...Fig Al 2 Driver Circuit Diagram 8 5 ...

Page 91: ...tialization 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 interface connector This line should be driven by a TTL driver or its equivalent ...

Page 92: ... are provided in Table A2 1 Table A2 1 Connector Pin Assignment and Descriptions of Interface Signals Description STROBE pulse to read data in Pulse width must be more than 0 5µs at receiv ing terminal The signal level is normally HIGH read in of data is performed at the LOW level of this signal These signals represent information of the 1st to 8th bits of parallel data respectively Each signal is...

Page 93: ...used Pulled UP to 5V through 3 3k 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 I B The condition at the time of shipment is set LOW for this signal NOTES 1 Direction refers to the direction of signal flow as viewed from the printer 2 Return denotes TWISTED PAIR RETURN and is to be connected at signal g...

Page 94: ... shows the sequence for data transmission Relations among the ON LINE switch SLCT IN signal DC 1 DC 3 code and interface signals are shown in Table A2 2 below Table A2 2 Relations among ON LINE SLCT IN DC 1 DC 3 and Interface Signal 8 9 ...

Page 95: ...to 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 l DC 3 code is valid under the condition that the DIP switch pin 1 8 is OFF namely the level of SLCT IN at the pin No 36 of the interface connector is HIGH With SLCT IN at LOW level the Printer is always placed in the Selected state and the DC 1 DC 3 code is not valid 4 Whe...

Page 96: ......

Page 97: ...APPENDIX 4 Character Fonts 92 ...

Page 98: ...NOTE Numbers represent Hex code 93 ...

Page 99: ... 94 ...

Page 100: ... 95 ...

Page 101: ...APPENDIX 5 Control Codes ...

Page 102: ...rference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged 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 are ...

Page 103: ...EPSON DEUTSCHLAND GMBH Am Seestern 24 4000 DÜsseldorf 11 F R Germany Phone 0211 596 1001 Telex 41 8584786 EPSON AMERICA INC N Y 98 Cutter Mill Road Great Neck New York 11021 Phone 516 487 0660 Telex 25 510223 0743 EPSON U K LTD Sherwood House 176 Northolt Road South Harrow HA2 OEB U K Phone 01 422 5612 01 422 l 118 Telex 51 8814169 PRINTED IN JAPAN 81 10 10 ...

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Epson MX-80 F/T Type II, Operation Manual

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Summary of Contents for MX-80 F/T Type II

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