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Epson MX-82 Operation Manual

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M X - 8 2
EPSON DOT MATRIX PRINTER
Operation Manual
MX
MX-82 F/T
EPSON
P8190027-2

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  • Page 1 M X - 8 2 EPSON DOT MATRIX PRINTER Operation Manual 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: Table Of Contents

    6.3 Column layout on fanfold paper... 14 6.4 Top of form position setting... 14 ... 15 7. Gap Adjustment 8. Power Connection INSTALLATION OF MX-82 1. Unpacking ...17 1.1 Unpacking steps... 1.2 Repacking steps... 2. Counting the Parts ....
  • Page 4 6.4 Setting sequence of funcional specifications ......... . 48 WHAT IS THE MX-82? .........
  • Page 5 Fig. 1 5 Printer with Fanfold Paper Set Completely .......
  • Page 6 Fig. A1-2 Driver Circuit Diagram ... Fig. A2-1 Parallel Interface Timing..Fig. A3-1 Connection of MX-82, MX-82 F/T to Computers..94 Table 1 Interface Signals in Paper-Out Status..Table 2 Functions and Conditions of DIP Switch No. 1 ... 45 Table 3 Character Size and Maximum Column Length..

  • Page 7: General Description

    VSBC computers. In addition to the MX-82 which is an adjustable sprocket pin feed type, a friction and adjustable sprocket feed type called “MX-82 F/T” is also available. In this manual, in- stallation of MX-82 and MX-82 F/T will be described individually and then the opera- tion which is common to both will be described.

  • Page 8: Characteristics

    2. Characteristics The MX-82 and MX-82 F/T have been designed as a printer with versatile functions to meet a wide range of applications from small business to home uses and even for hobbies. The following is a brief summary of their major characteristics.

  • Page 9: Installation Of

    INSTALLATION OF MX-82 1. Unpacking Before removing the MX-82 from the carton, check the box for evidence of shipping damage or mishandling. If such evidence is present, notify the carrier immediately. 1.1 Unpacking steps Unpacking steps are as follows: STEP 1. Open the carton.

  • Page 10: Fig. 2 Contents Of Carton

    2. Separato 1. MizizGkL 1. MX-82 2. Separator 3. Cartridge Ribbon 4. Power (Only European Type 220/240V) 5. MX-82 Operation Manual Fig. 2 Contents of Carton 3. Cartridge Ribbon- (European Type)

  • Page 11: Installation Of The Printer

    NOTE: Rubber feet are provided to prevent the marring of the surface where the MX-82 is placed. (b) Avoid operating the MX-82 in places where it may be exposed to direct sun- light or where a great deal of greasy dust exists in the air.

  • Page 12: Fig. 4 Assembly Tools

    Before using the Printer, be sure to remove this paper. If the MX-82 is to be reshipped, remember to return it to the original position.

  • Page 13: Fig. 6 Removal Of Printer Lid

    STEP 1. Stand the printer lid upright. 2. Push the printer lid toward the right and pull up its left side. (See Fig. 6) 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.

  • Page 14: Cartridge Ribbon Setting

    4. Cartridge Ribbon Setting EPSON’s Cartridge Ribbon is compact, long-lasting, and very easy to set and re- move. Furthermore, you have no need to soil your fingers in handling it. STEP 1. Open the printer lid (or remove it). 2. Confirm that the scale (paper retainer) is turned toward the platen and is touching it.

  • Page 15: Fig. 9 Cartridge Ribbon Setting

    Fig. 9 Cartridge Ribbon Setting NOTES 1: Incorrect setting 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. Ribbon kRibbon Mask Correct Incorrect Incorrect Fig.

  • Page 16: Separator Installation

    Paper 6. Paper Loading 6.1. Loading of fanfold paper The MX-82 Printer accommodates 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.

  • Page 17: Fig. 12 Insertion Of Fanfold Paper

    5. 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. IN OUT...

  • Page 18: Fig. 13 Raising Of Sprocket Lock Levers

    7. Raise the two sprocket lock levers to loosen, and adjust the sprocket pin position to the paper width. (See Fig. 13) Paper Fig. 13 Raising of Sprocket Lock Levers 8. Engage the paper feed holes of the paper on the feeding pins, push the scale back into position, and adjust the tension of the paper.

  • Page 19: Fig. 15 Printer With Fanfold Paper Set Completely

    9. Put the printer lid on the Printer. Fig. 15 Printer with Fanfold 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.

  • Page 20: Removal Of Fanfold Paper

    Switch on and push the Line Feed button. (Details are described later.) 6.3 Column layout on fanfold paper When fanfold paper of from 4” to 10” in width is supplied with the MX-82 the gra- duations on the scale can be used as the indexes of print column positions (1-96).

  • Page 21: Gap Adjustment

    (1) Move the head adjusting lever (located on the left frame of the Printer) forward or backward to adjust the gap between the head nose and the platen. (See Fig. 18) Forward: To widen the gap.

  • Page 22: Power Connection

    (2) 220V AC, 50 Hz (3) 240V AC, 50 Hz Before connecting the MX-82 to a power source, make certain of the primary AC rat- ing from the label located on the chassis at the rear of the Printer. After connection of the Printer to the proper power source and upon application of power to the Printer, “Initialization”...

  • Page 23: Installation Of Mx-82 F/T

    INSTALLATION OF MX-82 F/T 1. Unpacking Before removing the MX-82 F/T from the carton, check the box for evidence of ship- ping damage or mishandling. If such evidence is present, notify the carrier imme- diately. 1.1 Unpacking steps Unpacking steps are as follows: STEP 1.

  • Page 24: Counting The Parts

    2. Counting the Parts The MX-82 F/T and standard accessories are as shown in Fig. 19. Upon unpacking, if you notice any listed contents missing or evident damage, contact the store where you purchased the MX-82 F/T as soon as possible.

  • Page 25: Installation Of The Printer

    NOTE: Rubber feet are provided to prevent the marring of the surface where the MX-82 F/T is placed. (b) Avoid operating the MX-82 F/T in places where it may be exposed to direct sunlight or where a great deal of greasy dust exists in the air.

  • Page 26: Fig. 21 Assembly Tools

    Before using the Printer, be sure to remove this paper. If the MX-82 F/T is to be reshipped, remember to return it to the original position. (3) Prepare tools Prepare the following two screwdrivers to disassemble or assemble the printer.

  • Page 27: Fig. 23 Removal Of Printer Lid

    STEP1. Stand the printer lid upright. 2. Push the printer lid toward the right and pull up its left side. (See Figs. 23 (2))

  • Page 28: Cartridge Ribbon Setting

    4. Cartridge Ribbon Setting EPSON’s Catridge 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). 2. Confirm that the scale (paper retainer) is turned toward the platen and is touching it.

  • Page 29: Separator Installation

    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.

  • Page 30: Mounting And Dismounting Of Tractor Unit

    6. Mounting and Dismounting of Tractor Unit The tractor unit of the MX-82 F/T is detachable. If it is an obstacle when using roll paper, it can be taken out as follows; STEP 1. Release the lock levers of the tractor unit by pulling in the direction as shown in Fig.

  • Page 31: Paper Loading

    7. Paper Loading 7.1 Fanfold paper 7.1.1 Loading of fanfold paper The MX-82 F/T Printer accommodates fanfold paper from 4” to 10” in width. To load the fanfold paper, observe the following procedure. STEP 1. Raise the printer lid. 2. Unlock the release lever by pulling it in the direction of the arrow. (See Fig.

  • Page 32: Fig. 31 Raising Of Sprocket Lock Levers

    8. Raise the two sprocket lock levers to loosen, and adjust the sprocket pin position to the paper width. (See Fig. 31) Fig. 31 Raising of Sprocket Lock Levers 9. Engage the paper feed holes of the paper on the feeding pins, push the scale back into position, and adjust the tension of the paper.

  • Page 33: Removal Of Fanfold Paper

    10. Put the printer lid on the Printer. (See Fig. 33) Fig. 33 Printer with Fanfold Paper Set Completely NOTE: When the MX-82 F/T is to be used on a desk or a bench, arrange- ment of the fanfold paper in parallel with the MX-82 F/T as shown below will permit the paper to be folded in an accordion style.

  • Page 34: Column Layout On Fanfold Paper

    7.1.3 Column layout on fanfold paper When fanfold paper of from 4” to 10” in width is supplied with the MX-82 F/T, the graduations on the scale can be used as the indexes of print column positions (I to 96). Alignment of the print start position on fanfold paper with the 1st column posi- tion at the extreme left of the scale will facilitate column layout.

  • Page 35: Roll Paper

    EPSON offers the roll paper holder as an optional accessory for the MX-82 F/T. 7.2.2 Loading of roll paper The MX-82 F/T accomodates a roll of single play paper measuring 8.5 kO.12 in. in width with a 1 in. core. To load it, observe the following procedure.

  • Page 36: Cut Paper Sheet

    Fig. 38 Loading of Roll Paper (3) 7.3 Cut paper sheet 7.3.1 Loading of cut paper sheet The MX-82 F/T accommodates cut paper sheets measuring 8.3” to 8.5” in width. To load a cut paper sheet, observe the following procedure. STEP 1. Raise the printer lid.

  • Page 37: Fig. 39 Loading Of Cut Paper Sheet

    Release Lever Fig. 39 Loading of Cut Paper Sheet 6. Lock the release lever. 7. While turning the manual paper feed knob 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.

  • Page 38: Fig. 41 Alignment Of Side Edges

    Fig. 41 Alignment of Side Edges b) If the cut paper sheet or form is not long enough to align the side edges, align the top edge of the paper with the form position setting mark on the tractor unit. (See Fig. 42) Fig.

  • Page 39: Fig. 44 Setting Of Cut Paper Sheet

    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 Paper Sheet Set Completely...

  • Page 40: Gap Adjustment

    Printer, “Initialization” will take place in the Printer with the effects described in para- graph 1.4, Appendix 1. If your MX-82 F/T 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 the store where you purchased the MX-82 F/T.

  • Page 41: Fig. 46 Gap Adjustment

    Head Adjusting Le BBackward M Forward @I Head Adjusting Lever (Side view) Fig. 46 Gap Adjustment - 3 5 -...

  • Page 42: Operation

    There are three switches and four indicators (green LED’s) on the control panel and one power switch on the right side of the Printer case. In this section, panel opera- ting procedures are covered in sufficient detail for the user to become familiarized with the Printer.

  • Page 43: Indicators

    INIT signal is applied to the interface connector. Therefore, before turning the POWER switch on to start operating the Printer, set the paper at the appropriate Top of Form position. LF SW: The paper advances while this switch is being depressed.

  • Page 44: Fig. 48 Printer Initial Check

    1.3 Printer initial check Take the following steps and become familiar with the Printer. START 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: Buzzer

    2. Buzzer The buzzer is located inside the Printer case, and sounds for about one second when the Printer receives BEL code ((07)20H). (See page 66 for the BEL code.) 3. Paper End Detector (1) When the paper end detector (a reed switch located on the paper guide) detects that the paper is nearly exhausted, the signals on the interface connector change to the following status, and the printing operation stops.

  • Page 46: Self-Test

    (4) The paper end detecting function is useful to prevent erroneous printing when the Printer is out of paper, If printing of characters up to the last line is to be con- tinued, the paper end detecting function may be made invalid by either of the fol- lowing two methods.

  • Page 47: Setting Of Dip Switches

    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.

  • Page 48: Fig. 51 Loosening All 4 Screws

    Turn the printer upside down on a soft surface. With a Phillips type screwdriver, completely loosen all 4 screws. (See Fig. 51) Place tape over the 4 holes so the screws won’t fall off when you tip the printer right side up.

  • Page 49: Fig. 53 Construction Of The Printer

    See the inside of the printer before you set the switches. The printer consists of a printer mechanism, a controller, a transformer and filter cir- cuit board, and a control panel. (See Fig. 53) Construction of the Printer Control panel 7 1 i(cd Fig.

  • Page 50: Fig. 54 Location Of 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.

  • Page 51: Setting Of Dip Switch 1

    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 again.

  • Page 52: Setting Of Dip Switch 2

    (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 interface connector. Therefo- re, to control the pin No.

  • Page 53: Coding Tables

    5.3 Coding Tables Appendix 4 shows all available codes when the Printer is set for operation with stan- dard coding by setting the DIP switch pins 1-7, 2-1 and 2-2 to all ON position, Table 5 shows International Character Set Designation according to the combination of the DIP switch setting.

  • Page 54: Setting Sequence Of Funcional Specifications

    5.4 Setting Sequence of Functional Specifications The MX-82, MX-82 F/T have a choice of various functional specifications such as amount of line spacing, form 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.

  • Page 55: Fig. 57 Setting Form Length Per Page

    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: Fig. 58 Setting Number Of Columns Per Line

    Power ON 96 columns Normal Emphasized SI or - ESCSI print print Fig. 58 Setting Number of Columns per Line - 5 0 -...

  • Page 57: Fig. 59 Setting Skip-Over Perforation Function

    l-inch skip-over perforation function not provided ESCN+n ESC 0 Fig. 59 Setting Skip-over Perforation Function l-inch skip-over perforation function provided - 5 1 -...
  • Page 58 This chapter describes the MX-82, MX-82 F/T (hereinafter refered to as MX-82) from the viewpoint of hardware and software. The contents of the chapter are; 1. What is a dot matrix printer? 2. Definitions of some terms often used. 3. Control codes in the text mode 4.

  • Page 59: What Is The Mx-82

    It has a print head that contains 9 needles vertically and can create distinctive char- acters like with typewriter. In that sense it is one of the key features that the printer has. EPSON’s MX-82 can control each needle programmably, expanding the ability of the printer.

  • Page 60: Fig. 82 Line Spacing

    In the above figure, the print head moves from left to right. Since the MX-82 is a bi- directional printing type, the head can also move from right to left to print char-...
  • Page 61 8-bit data bus line. (2) Escape codes In a lot of control codes that the MX-82 has, you might be confused by the word “ESCAPE”. Some alphabetical letters and some numbers follow it. Each of them causes a special function to the printer, i.e.

  • Page 62: Definition Of Some Terms Often Used

    The “ESCAPE” codes used in the MX-82 should not be confused with the es- cape key which some computers have. So be familiar with EPSON’ codes. (3) “+” symbol You will see “+” symbol often in the explanation or description of control codes from now on.
  • Page 63 For example, if the data is transferred in the order of DATA + CR + LF, DATA will be printed by the CR code, and when the Printer receives the LF code, it only carries out one line feed, because no print data precedes the LF code.

  • Page 64: Control Codes In The Text Mode

    Therefore, the paper is advanced one line after printing. (4) FF (Form Feed) The FF code causes the Printer to execute the printing of all data stored in the print buffer and advances the paper to the next predetermined Top of Form posi- tion.
  • Page 65 In case of 5th. 10th and 219 columns. -1 <5>H <A>H <15>Hm [DATA] bg JKL a (LFI [PRINT] In case of lack of stop position. -1 <5>H <A>H m ABC m DEF m GHI m JKL [DATAI [PRINT] In case of character data transferring over next tab stop. -1 <5>H <A>H <15>H m ABCDEF m GHI m JKL [DATA] /EiiJpJ...
  • Page 66 [DATA] 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 binary number. In case of “ESC A + 24” to specify the amount of line spacing at 24/72 - 1/3 inch (24 - (0011000) as<lB>~ <41>~ <18>~inhexadecimalcodes.
  • Page 67 ( 1 5 k5 8,nks nk+l) 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.
  • Page 68 (Form Feed) See paragraph 3.1 (4) above. ESC C (10) + n (for setting a form length) ESC C + n (n + 0), ESC C + [O]H + m (for setting form length) The “ESC C + n” codes specifies the form length which is determined by the number of lines (n: 1 s (n)n $ 127 where the value of “n”...
  • Page 69 (Example) 3-line skip-over perforation [PRINT] BQBBc~!:4BQ BBBQ(1!BBQ mx!Bc~!:Jm! (12) ESC 0 This code cancels the skip-over perforation set by the ESC N + n code. 3.3 Character designation codes (1) SO (Shift Out) (for enlarged characters) When the SO code is input, all data that follows it in the same line will be print- ed out in enlarged (double width) characters.
  • Page 70 (2) SI (Shift In) (for condensed characters) When the SI code is input, all data that follows it will be printed out in condensed characters. This code is cancelled by the input of “DC 2” code. The SI code can be input at any column position on a line, but all characters/symbols on the line containing SI code are printed out in condensed characters.
  • Page 71 (7) ESC E (for emphasized characters) The ESC E code causes the Printer to print emphasized characters. Emphasized printing gives the character stronger impression on the paper. This code can be input in any column position on a line, but all characters on the line containing ESC E code are printed out in emphasized characters.
  • Page 72 The DC 3 code places the Printer in the Deselected state. In other words, it dis- ables the Printer to receive data. Once the Printer is put in the Deselected state by the DC 3 code, the Printer will not revert to the Selected state unless the DC 1 code is input again.
  • Page 73 280-by-193 screen matrix. As well as the latter “APPLE II”, the MX-82 has no character generated graphics but allow you to control all the 8 nee- dles freely and programmably by means of the so-called “bit image”.
  • Page 74 4.1 Normal-density bit image mode setting by ESC K + nl + nz To convert the printer’s operation mode from Text to Normal-density Bit Image, the “ESC K + nl + nz” code must be input. (Here, the sign “+” is inserted for the purpose of legibility only and should not be input in actual operation.) Namely, when ESC...

  • Page 75: Control Codes In The Bit Image Mode

    Printing Text data A (Ex. 3) Input data 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] Text data C Bit-image data B 576 bit-image positions - 6 9 - Bit-image data D...
  • Page 76 4.2 Dual-density bit imagemode setting by ESC L + nl + nz When the ESC (< 1 B> the printer’s operation mode is converted from Text to Dual-density Bit Image. The transfer sequence of bit image data is the same 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.

  • Page 77: Fig. 63 Relationship Between Data And Dot Wires

    4.3 Relationship between data and dot wires Fig. 63 shows the relationship between the Bit Image data and the dot wires in the print head. You can control arbitrary 8 dot wires in the print head. Dot wire 0 .- &...

  • Page 78: Fig. 64 Data Transfer Sequence In Bit Image Mode

    4.4 How to obtain nl and n2 In the MX-82 Printer, you have to send the amount of data by nr + n2 in hexadecimal numbers following the ESC K or ESC L. If the amount of bit image data is 300, then nt and nz may be derived as follows;...

  • Page 79: Fig. 65 Example Of Graphic Pattern Formation

    4.5 Programming examples (1) Dual-density bit image printing Fig. 65 Example of Graphic Pattern Formation NOTE: The most significant bit (MSB) of the bit image data corresponds to the dot wire at the uppermost position. For example, to print a graphic data as shown in Fig. 65, a program such as shown below must be executed.

  • Page 81: Fig. 66 Normal-Density And Dual-Density Modes

    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/T. If the accuracy of line feed is critical, the fanfold paper must be used.

  • Page 82: Fig. 67 Examples Of Bit Image Printing

    (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: Fig. 68 Expressions Of Brightness

    (5) Example of expression of brightness using the Bit Image Mode (Ex.) Expression of brightness using the bit image mode (Ex.) Expression of dot density a... l oe*a @*.*a @em*. l ee*o me@.@ l oae* Fig. 68 Expressions of Brightness Data will be transmitted in order of <AA>...

  • Page 84: Maintenance

    MAINTENANCE 1. Preventive Maintenance Preventive maintenance for the MX-82 and MX-82 F/T consist basically of clean- ing. The Printer should be cleaned with a soft brush to remove paper dust and parti- cles after every three months of use. The exterior surface of the Printer can be cleaned by using a mild detergent and water solution.

  • Page 85: Fig. 69 Replacement Of Print Head

    Head Lock Lever Carnage Assembly (Side View) Fig. 69 Replacement of Print Head Print Head , Terminal Board Head Connector ‘Be sure to hold this connector firmly lo pull the head cable ‘Take hold of the cable at the point izicated b y ariows o and apply force in either of the direc-...

  • Page 86: Specifications

    Selectable by DIP SW or programmable Characters per inch 19.9 Adjustable sprocket pin feed (and/or friction feed for MX-82F/T) MX-82 MX-82 F/T 4” to 10” 4” to 10” (101.6mm to 254mm) (101.6mm to 254mm) 8.5” f 0.12” (215.9 f 3 mm) 8.3” to 8.5”...
  • Page 87 5 x 106 lines (excluding print head) 5 to 35’C (41 to 95’F) 10 to 80% non-condensing 115V.60Hz 220/240V, 50 Hz 1 Amp maximum 100 VA maximum MX-82 107 mm (4.2”) 374 mm (14.7”) 305 mm (12.0”) 5.5 kg (12 Ibs.) - 8 1 - MX-82F/T 133 mm (5.2”)

  • Page 88: Appendixes

    Construction of MX-82 and MX-82 F/T The EPSON MX-82 and MX-82 F/T dot matrix printers 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.
  • Page 89 F i g . Al -1 Control Circuit Diagram...

  • Page 90: Power Circuit

    1.4 Printer initialization Printer initialization 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).

  • Page 91: Fig. A1-2 Driver Circuit Diagram

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

  • Page 92: Parallel Interface

    APPENDIX 2 Parallel Interface Both the MX-82 and MX-82 F/T include a parallel interface as the standard equip- ment, and this paragraph describes the parallel interface. (1) Specifications (a) Data transfer rate: (b) Synchronization: (c) Handshaking: (d) Logic level: (2) Connector Plug: 57-30360 (AMPHENOL) It is recommended that interface cables be kept as short as possible.
  • Page 93 Return side. To prevent noise effectively, these cables should be shielded and con- nected to the chassis of the host computer and the printer, respective- Table A2-1 (cont’d) This signal indicates that the printer is in the selected state.

  • Page 94: Fig. A2-1 Parallel Interface Timing

    4. Data transfer must not be carried out by ignoring the ACKNLG or BUSY signal. (Data transfer to this printer can be carried out only after con- firming the ACKNLG signal or when the level of the BUSY signal is “LOW’.)
  • Page 95 NOTES: 1. In Table A2-2, it is assumed that as soon as the Printer receives data, it sends back the ACKNLG signal, though this data is not stored in the print buffer. In this status, the Printer is waiting for the DC 1 code for normal entry.
  • Page 96 Hex. I”S( 5,617 8'9!A ’...

  • Page 97: Character Fonts

    APPENDIX 4 Character Fonts (Hex Code ti i i iJ - 9 2 -...
  • Page 98 NOTE: Numbers rep resent Hex. liiiil - 93 -...
  • Page 99 FRANCE GERMANY ENGLAND DENMARK SWEDEN ITALY 5D‘ liiiil...

  • Page 100: Fig. A3-1 Connection Of Mx-82, Mx-82 F/T To Computers

    SPAIN - 9 6 -...

  • Page 101: Control Codes

    1 Back space. Cancels a last character 1 Horizontal Tabulation. Device Control 2. 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 and alphabets.
  • Page 102 FEDERAL COMMUNICATIONS COMMISSION “This equipment generates and uses radio frequency energy and if not in- stalled and used properly. that is, in strict accordance with the manufac- turer’s instructions, may cause interference to radio and television recep- tion. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation.
  • Page 103 EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. (LA) 3415 Kashiwa St. Ca. 90505 Torrance, Phone: (213)539-9140 Telex: 182412 EPSON DEUTSCHIAND GMBH Am Seestern 24 4000 Diisseldotf 11. F.R. Germany Phone: 0211-5961001 Telex: 8584786 EPSON sl+NsHu SEKI CQLTR EPSON U.K. LTD.

This manual is also suitable for:

Mx-82 f/t

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