Epson MX-82, MX-82 F-T User Manual

MX-82

EPSON DOT MATRIX PRINTER

Operation Manual

MX

MX-82 F/T

EPSON

P8190027-2

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.

TABLE OF CONTENTS

GENERAL DESCRIPTION....................................................................................

1. Introduction

.......................................................................................

2. Characteristics................................................................................................

INSTALLATION OF MX-82.................................................................................

1.

Unpacking...............................................................................................

1.1

Unpacking steps

.......................................................................

.....

1.2 Repacking steps ......................................................................................

2.

Counting the Parts .....................

3.

Installation of the Printer ...............................................................................

........................................................

4. Cartridge Ribbon Setting..............................................................................

5.

Separator Installation .....................................................................................

6.

Paper Loading ................

6.1

Loading of fanfold paper............................................................................

6.2 Removal of fanfold

.......................................................

paper ..........................................................................

10

10

10
14

6.3 Column layout on fanfold paper.................................................................... 14

6.4 Top of form position setting.........................................................................

7. Gap Adjustment

...........................................................................................

14
15

8. Power Connection ....................................................................................... 16

INSTALLATION OF

MX-82 F/T...........................................................................

17

1. Unpacking .........................................................................................................17

1.1 Unpacking steps......................................................................................... 17

1.2

Repacking steps.......................................................................................

2.

Counting the Parts . . . . . . . . . . . . . . . .

3.

Installation of the Printer ........................................................................................... 19

.......................................................................

4. Cartridge Ribbon Setting..............................................................................

5. Separator Installation.......

6.

Mounting and Dismounting of Tractor Unit.....................................................

7.

Paper Loading......................

7.1 Fanfold paper........

7.1.1

Loading of fanfold paper .......................................................................... 25

7.1.2 Removal of fanfold

...............................................................

..............................................................

....................................................................................

paper........................................................

17
18

22

23

24

25
25

27

7.1.3 Column layout on fanfold paper ..................................................................28

7.1.4

Top of form position setting.......................................................................

7.2

Roll paper ................................................................................................

7.2.1 Roll paper holder

7.2.2

Loading of roll paper

7.3 Cut paper sheet

7.3.1

Loading of cut paper sheet ......................................................................

8.

Gap Adjustment ..................

9.

Power Connection ................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..................................................................................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..............................................................................

......................................................................

28
29
29
29
30
30
34
34

1
1

2
3

3
3

3

3
5
8

OPERATION

1.

Switches and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Switches ..................................................................................................

1.2 Indicators .................................................................................................

2.

Buzzer

3.Paper End Detector ......................................................................................

4. Self-Test.

5. Setting of DIP Switches ......................................................................

5.1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

...............................................................................................................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting of DIP switch 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Setting of DIP switch 2 ..............................................................................

5.3 Coding tables ...............................................................................

6.4

Setting sequence of funcional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WHAT IS THE MX-82?

1.

What is a Dot Matrix Printer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.

Definition of Some Terms Often Used .......................................................................

3.

Control Codes in the Text Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.

Control Codes in the bit Image Mode ...........................................................................

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.

Preventive Maintenance ..............................................................................

2.Parts Replacement ...........................................................

SPECIFICATIONS ..............................................................................................

APPENDIXES ....................................................................................................

1. Construction of MX-82 and MX-82 F/T ...........................................................

1.1 Printer mechanism ...................................................................................

1.2 Control circuit board.................................................................................

1.3 Power circuit ............................................................................................

1.4 Printer initialization ...................................................................................

2.

Parallel Interface............................................................................................

3.ASCII Code Table ..........................................................................................

4.

Character Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.

Control Codes ................................................................................................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .................................

.............................

36

36

36
37

ii

40

41

45

46

47

48

53

53
56
58
69

80

i3

82

85

85

85
85

88
88

89

91

“96’

LIST OF FIGURES

Fig.

2

Fig.

3

Fig.

4

Fig.

5

Fig.

6

Fig.

7

Fig.

8

Fig.

9

Fig.
Fig. 10

11

Fig.

12

Fig.

13

Fig.
Fig. 14

1 5

Fig.

16

Fig.

17

Fig.

18

Fig.
Fig. 19
Fig. 20
Fig. 21
Fig. 22
Fig. 23
Fig. 24
Fig. 25
Fig. 26
Fig. 27
Fig. 28
Fig. 29
Fig. 30
Fig. 31
Fig. 32
Fig. 33
Fig. 34
Fig. 35
Fig. 36
Fig. 37
Fig. 38
Fig. 39
Fig. 40

1

EPSON MX-82 and MX-82 F/T Dot Matrix Printer..................................................

Contents of Carton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Laying Printer on Firm Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal of Shipping Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal of Printer Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remounting of Printer Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cartridge Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cartridge Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Examples of Correct and Incorrect Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Separator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Insertion of Fanfold Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Raising of Sprocket Lock Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engagement of Paper Feed Holes on Feeding Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printer with Fanfold Paper Set Completely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example of Paper Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Top of Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents of Carton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..........................................

Laying Printer on

Firm Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal of Shipping Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal of Printer Lid .......................................................................................................................

Cartridge Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . .

I

Cartridge Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Examples of Correct and Incorrect Ribbon Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Separator Installation ........................................................................................................................

Dismounting of Tractor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting of Tractor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Insertion of Fanfold Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Raising of Sprocket Lock Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engagement of Paper Feed Holes on Feeding Pins ............................................................................

Printer with Fanfold Paper Set Completely ..................................................................................

Example of Paper Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Top of Form Position Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loading of Roll Paper (1) ...................................................................................................................

Loading of Roll Paper (2) ...................................................................................................................

Loading of Roll Paper (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loading of Cut Paper Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment of Inserted Paper Position . . . . . . . . . . . . . . . . .

1

4
5
6
6
7
7
8
9

9

10

11

12

12
1 3
13
15

16

18
19

20
20
2 1
22
22
23
23
24
24
25
26
26
27
27
28
29
30
30
3 1

3 1

Fig. 41 Alignment of Side Edges .............................................................................32

Fig. 42
Fig. 43

Form Position Setting Mark ............................................................................................

Print Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

32

Fig. 44 Setting of Cut Paper Sheet..
Fig. 45
Fig. 46 Gap Adjustment
Fig. 47
Fig. 48 Printer Initial Check
Fig. 49

Printer with Cut Paper Sheet Set Completely..

.......................................................................................

Switches and Indicators on Control Panel

.................................................................................

Flowchart of Paper Out Status Release Procedure..
Fig. 50 Removing Manual Paper Feed Knob
Fig. 51

Fig. 52
Fig. 53

Loosening All 4 Screws..

Pulling Out Wires Hooked to Control Panel..

Construction of the Printer

Fig. 54 Location of DIP Switches..
Fig. 55 Setting DIP Switches
Fig. 56 Setting Amount of Line Spacing
Fig. 57 Setting Form Length per Page
Fig. 58 Setting Number of Columns per Line..
Fig. 59 Setting Skip-over Perforation Function
Fig. 60 Dot Wires

................................................................................................

Fig. 61 Formation of Character “E”.
Fig. 82 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 Modes..
Fig. 67
Fig. 68
Fig. 69

Examples of Bit Image Printing..
Expressions of Brightness..
Replacement of Print Head..

..............................................................

..................................................................... 77

.................................................................... 79

..................................................

.............................................

........................................

................................

..........................................

33
33
35
36
38
39

41

42
42
43
44
44
48

49
50
51
53
53
54

71
72

73
75
76

Fig. A1-1

Control Circuit Diagram
Fig. A1-2 Driver Circuit Diagram
Fig. A2-1
Fig. A3-1

Parallel Interface Timing..

Connection of MX-82, MX-82 F/T to Computers..

.......................................................................

.........................................................................

....................................................................

LIST OF TABLES

Table 1

Interface Signals in Paper-Out Status..

Table 2 Functions and Conditions of DIP Switch No. 1
Table 3 Character Size and Maximum Column Length..

Table 4 Functions and Conditions of DIP Switch No. 2..
Table 5 International Character Set Designation
Table 6 International Character Sets..

.................................................................

...................................................

.......................................

......................................

.....................................

................................................

Table A2-1 Connector Pin Assignment and Description of

Interface Signals

...............................................................................

Table A2-2 Relations among ON:LINE, SLCT IN, DC1 /DC3

and Interface Signal

..........................................................................

..............................

84
85
89
94

39
45

46
46

47

47

87

89

GENERAL DESCRIPTION

1. Introduction

Ideal for computer business applications, the MX-82, MX-82 F/T Dot Matrix Printer
is the latest extension of EPSON advanced printer technology. This new printer cou­ples innovative design and precision manufacturing with long life, low cost, light
weight and superior performance. The MX-82, MX-82
matrix print head that can be replaced easily, and 80 CPS bidirectional printing with
logic seeking capability. This printer also offers 48, 79, 96, and 159 column printing
width. And characters can be printed in any desired size-normal, enlarged, con­densed, etc. Another important feature of the MX-82, MX-82 F/T is its capability of
printing not only in both Text and Bit Image” modes but also in mixed 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 controls, such as form feed, programmable

line spacing and skip-over perforation are at your disposal. Furthermore, various in-

terface options are available to permit handshaking with most 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, in­stallation of MX-82 and MX-82 F/T will be described individually and then the opera­tion which is common to both will be described.

F/T

features a 9 x 9 dot

Fig. 1

EPSON MX-82 and MX-82 F/T Dot Matrix Printer

-1-

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.
(1) Plotter print

Horizontal dot space is equal to the vertical dot space. Similar figure in propotion

to that of CRT screen could be printed out onto the paper.

(2) Both text printing for general data processing and Bit Image printing for graphic

data processing are freely available.

In the Bit Image printing, both normal density (576 dots/line in horizontal direc-

tion) and dual density (1152 dots/line in horizontal direction) modes are select-

able under software control.

(3) Wide variation of printing widths and character sizes.

(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 inch automatic skip-over function selectable by DIP

switch setting or variable under software control.
(c) Programmable line spacing.
(d) Vertical tabulation and horizontal tabulation.
(e) Buzzer, printer select/deselect function.

(5) High throughput by bidirectional printing with logic seeking capability.
(6) Easy-to-replace “throwaway” print head. The print head has a life expectancy of

approx. 100 x

10s

characters.
(7) 8 international character sets are selectable by DIP switch setting or software.
(8) Complete with standard equipment including paper end detector, custom

cartridge ribbon, etc.

-2-

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.

2. Remove accessories.

3. Remove the MX-82 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 recommended that all original packing materials be saved for reuse in

case the MX-82 requires reshipment in the future.

2. Counting Parts

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

-3-

L

2. Separato

3. Cartridge Ribbon-

*

1. MizizGkL

(European Type)

1.

MX-82

2.

Separator

3.

Cartridge Ribbon

4.

Power (Only European Type

5.

MX-82 Operation Manual

Fig. 2 Contents of Carton

220/240V)

1
1
1

1
1

3. Installation of the Printer

(1) Operating site selection

When installing the MX-82, observe the following instructions.
(a) Place the Printer on a bench, tabletop or any other convenient flat surface

with enough room for the separator in the back of the Printer. Your layout
may look like Fig. 3.
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.
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

(95-F)

during operation, to sudden changes in temperature, or to extreme

shock.

(e) Avoid using the Printer in humid locations or in the vicinity of heat generating

sources such as heater, etc.

CRT displav

i

Floppy

disk

,,

i

unit

(4O’F)

or above 35°C

/

Interface cable /

Paper

2i!!J

Firm surface / -

Fig. 3 Laying Printer on Firm Surface

-5-

I

/

MX-82

III

I

II

(2) Removal of protective paper for paper end detector

The MX-82 is provided with a protective 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-82 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.

(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 printer on its left side.

2. Remove with a screwdriver the two shipping screws visible on the un­derside of the lower case.

Right Side of the Printer

Fig. 5 Removal of Shipping Screws

NOTE: Save the two shipping screws for possible future use

-6-

<SUPPLEMENT>

0

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 han­dling of the printer lid may result in damage to, or even breakage of, its hinges.

STEP 1. Stand 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 and push the printer
lid down.

Fig. 7 Remounting of Printer Lid

-7-

4. Cartridge Ribbon 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).

2. Confirm that the scale (paper retainer) is turned toward the platen and is
touching it.

3. Push the cartridge ribbon down and set it on the printer 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. 8)

Cartridge Ribbon

I

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 (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)

Fig. 8 Cartridge Ribbon Setting

Fig. 9 Cartridge Ribbon Setting

NOTES 1:

2: Confirm that the ribbon is neither twisted nor creased and that the car-

I

Incorrect

L

Incorrect setting of the ribbon may cause it to come off.

tridge is set properly.

Ribbon

kRibbon Mask

Incorrect

Fig. 10 Examples of Correct and Incorrect Ribbon Setti

ng

Correct

I

-9-

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. 11)

Paper

Fig. 11 Separator installation

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.

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 two paper holding covers, and be sure to insert the fanfold paper

between the frame and plastic roller of the separator. (See Fig. 12)

-10-

‘z&r Guiwaper

Holding Cover

IN OUT

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.

-11-

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. 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

-12-

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.

I

Fig. 16 Example of Paper Arrangement

-13-

I-

_

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 Power

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 gra­duations on the scale can be used as the indexes of print column positions (1-96).
Alignment of the print start position on fanfold paper with the 1 st column position at
the extreme left of the scale will facilitate column layout. Accordingly, center the
paper by adjusting it to these indexes of the scale.

6.4 Top of form position setting

The term “Top of Form position” is defined as the position in 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 re­quired 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 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 preprint) a mark at a position on the edge of the paper 77 mm
above the first print line position of the paper, then align this mark with the match-

marks on the sprockets by turning the manual paper feed knob. At this point, turn
the Power Switch on and the Printer will recognize this position as the Top of Form
position. Now, the printing can be started from the Top of Form position.

In case of feeding one page of fanfold paper by operating the MX-82 by the input of

FF code, the abovementioned adjustment is effective.

-14-

Fig. 17 Top of Form

7. Gap Adjustment

The adjustment of a gap between the head nose and the platen is used to adjust the
printing pressure as well as to suit the paper of the different thickness.
(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.
Backward: To narrow 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
Single-leaf paper
Carbon paper sheets

Position of adjusting lever

Set the lever to the 4th step.

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 adjusting lever backward (in theOdirection) by one

step. (See Fig. 18)

(4) When a set of carbon paper sheets is used, be sure that no characters are print-

ed within the two lines above and below the perforation.

-16-

8. Power Connection

The EPSON MX-82 Dot Matrix Printer is capable of operating on the following three
types of AC power.
(1) 115V AC, 60 Hz
(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 rat­ing 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” will take place in the Printer with the effects described in para­graph 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 the store where you purchased the
MX-82.

Head Adjusting

(Side View)

Leve

\@ F---

-w

)

7th

step

Fig. 18 Gap Adjustment

-16-

INSTALLATION OF MX-82 F/T

1. Unpacking

Before removing the MX-82 F/T 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.

2. Remove accessories.

3. Remove the MX-82 F/T by 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 conven­ient 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 recommended that all original packing materials be saved for reuse in

case the MX-82 F/T requires reshipment in the future.

-17-

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.

Dot Matrix Printer

(European Type)

1.

MX-82 F/T

2.

Separator

3.

Cartridge Ribbon

4. Power Cord (Only European Type 220/240V)

5.

MX-82 F/T Operation

Manual

Fig. 19 Contents of Carton

-18-

5.

Operation Manual

1
1
1
1
1

3. Installation of the Printer

(1) Operating site selection

When installing the MX-82 F/T, observe the following instructions.
(a) Place the Printer on a bench, tabletop or any other convenient flat surface

with enough room for the separator in the back of the Printer. Your layout
may look like Fig. 20.
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.

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 operation, to sudden changes in temperature, or to extreme
shock.

(e) Avoid using the Printer in humid locations or in the vicinity of heat generating

sources such as heater, etc.

CRT Display

Fig. 20 Laying Printer on Firm Surface

-19-

MX-82 F/T Type II

(2) Removal of protective paper for paper end detector

The MX-82

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-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.
(1) Phillips type screwdriver
(2) Round-blade type screwdriver

F/T

is provided with a protective paper inserted between the inner

1
1

I

(4) Removal of shipping screws

The purpose of the shipping screws is to protect the MX-82

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 printer on its left side.

2. Remove with a screwdriver, the two shipping screws visible on the un­derside of the lower case.

Fig. 21 Assembly Tools

Right Side of the Printer

F/T

against any da-

,w*

Lower Case

J

Fig. 22 Removal of Shipping Screws

NOTE: Save the two shipping screws for possible future use.

-20-

<SUPPLEMENT>

0

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 han­dling 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.

-21-

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.

3. Push the cartridge ribbon down and set it on the printer mechanism. To fa-

cilitate 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)

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 (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. 25)

Fig. 25 Cartridge Ribbon Setting

-22-

NOTES: 1. Incorrect setting of the ribbon may cause it to come off. (See Fig. 26)

2. Confirm that the ribbon is neither twisted nor creased and that the car­tridge is set properly.

.-Ribbon

Incorrect

Incorrect

Ribbon

I

Mask

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)

-“-Separator

Fig. 27 Separator Installation

-23-

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. 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

-24-