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Related Manuals for Epson M X - 8 5
Summary of Contents for Epson M X - 8 5
- Page 1 M X - 8 5 DOT MATRIX PRINTER Operation Manual P8290062-1...
- Page 2 Copyright © 1982 by EPSON Shinshu Seiki Co., Ltd. Nagano, Japan “All rights reserved” *The contents of this manual are subject to change without notice.
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Page 3: Table Of Contents
1.3. Contents of carton ... 3 1.4. Operation site..4 1.5. Assembly ... 4 1.6. Opening the printer..4 1.7. Removal of shipping screws..5 1.8. Removal of the upper case ... 5 2. Construction and Location of the MX-85 Component ... 7 3. - Page 4 MX-85 Dot Matrix Printer ... 1 Fig. Contents of Carton..3 Fig. Removal of Printer Cover ... 4 Fig. Removal of Shipping Screws..5 Fig. Removing Manual Paper Feed Knob ... 6 Fig. Loosening All 4 Screws ... 6 Fig.
- Page 5 Function and Conditions of DIP Switch B ... Table 1 Function and Conditions of DIP Switch A ... 10 Table 2 Baud Rate Selection..11 Table 3 Table 4 ASCII Code Table Selection..11 BAUDOT Code Table Selection..11 Table 5 Function and Conditions of Jumpers ...
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Page 6: Introductlon
INTRODUCTION The MX-85 Dot Matrix Printer is a highly versatile communication grade terminal printer, with the following features: 1. Print Speed: 80 CPS 2. Microprocessor controlled, logic seeking, bidirectional printing 3. Interface: Serial - RS-232C and 20 to 80 mA Current Loop 4. -
Page 7: Installatlon
(2) Remove accessories; ribbon, manual, etc. (3) Grasp the MX-85 by, its underside and lift straight out with ‘packing material attached. (4) Place the printer on a flat surface. (5) Carefully remove packing material. (6) Remove the vinyl cover. 1.2. Repacking Perform in reverse order of above. -
Page 8: Contents Of Carton
4. Roll Paper Holder 5. AC Power Cord 6. Filter Circuit Board If there is any evidence of damage or missing items, contact the vendor from whom the printer was purchased to report the details. 6. Filter Circuit Board (Y4252O400000) 3. Operation Manual 1. -
Page 9: Operation Site
3. Soldering iron (if jumper revision is necessary) 1.6. Opening the printer With the Printer facing you, grasp the cover firmly on the left side with the right hand. While holding down the left side of the machine with the left hand, pull cover up. -
Page 10: Removal Of Shipping Screws
Also, adequately discharge any static electricity which may be present on your person to prevent damage to any electronic components. 1. Remove the black roller knob on the right side of the printer by pulling straight out, firmly and steadily. -
Page 11: Fig. 5 Removing Manual Paper Feed Knob
Placing tape over the holes will prevent accidental loss of the screws when the Printer is inverted. 5. Turn the Printer right side up. Carefully lift the upper case from the left side. When the case is partially raised, reach in and pull control panel cable loose. Set the cover safely aside. -
Page 12: Construction And Location Of The Mx-85 Component
Fig. 7 2. Construction and Location of the MX-85 Com- ponents At this time, the following main components of the MX-85 Printer and their respective locations can be observed: 1. Transformer & Filter Circuit Board 2. SMDP Board - Top 3. -
Page 13: Fig. 8 Construction Of The Printer
Printer Machanism Control Panel Transformer & Filter Circuit Board Controller Printer Mechanism MX-85 Dot Matrix Printer SMDP Board (Driver Circuit Board) Connector (male and female) SMCT Board (Control Circuit Board) Spacer Controller Fig. 8 Construction of the Printer - 8 -... -
Page 14: Setting Of Dip Swtiches And Jumpers
3. Setting of DIP Switches and Jumpers 3.1. Location of DIP switches and jumpers In order to suit each user’s specific requirements, there are two (2) DIP (Dual In-Line Pin) switches located on the SMDP Board and sixteen (16) jumpers located on the SMCT Board. -
Page 15: Fig. 10 Setting Dip Switches
Table 1 Functions and Conditions of DIP Switch B Function Pin No. Baud Rate Table 2 Functions and Conditions of DIP Switch A P i n N o . F u n c t i o n T r a n s m i s s i o n C o d e I n A S C I I m o d e sets Word Struc-... -
Page 16: Table 3 Baud Rate Selection
4. Now using Table 2, select your transmission code: ASCII or Baudot. A. If ASCII is selected, refer to Table 4 for word length setting and parity control. B. If Baudot is selected, refer to Table 5 for selection of correct Baudot code. 5. -
Page 17: Setting Of Jumpers
3.3. Setting of jumpers Your application may require the removal or installation of jumpers of the SMCT Board. Before continuing, consult Table 6 which outlines the function and factory-set condition of each jumper. In order to access the SMCT Board it is necessary to remove the SMDP Board. This is accomplished by: 1. -
Page 18: Fig. 11 Jumpers On The Smct Board
Fig. 11 Jumpers on the SMCT Board -13- Jumper Jumper... -
Page 19: Power Supply
4. Power Supply Verify that the power supply is set correctly for your application. Check to see that the wire connected to the filter board is securely fastened to the correct voltage position. If it is necessary to change the voltage, use a flat blade screwdriver to loosen the existing connection and reconnect to the desired voltage. -
Page 20: Cartridge Ribbon Installation
5. Cartridge Ribbon Installation 1. Position the Printer with the logo facing you. 2. Lift the Printer cover. 3. Be sure the print scale is pushed to the rear, against the platen. 4. Remove the ribbon from its box and turn the knob counterclockwise to remove any slack. -
Page 21: Paper Holder Installation
The following steps should be performed with the power off. 1. Set the paper holder behind the MX-85 and locate the rear rubber feet of the Printer in the forward holes of the paper holder. Failure to do this will result in severe paper-tracking problems. -
Page 22: Fig. 16 Loading Of Roll Paper (1)
6. Insert the paper into the slot at the rear of the platen on the MX-85. 7. Turn the black knob on the right side of the printer to feed the paper through. 8. Pull the paper release forward and align the paper. -
Page 23: Gap Adjustment
7. Gap Adjustment It is possible to adjust the gap between the print head and platen to accommodate various thicknesses of form and print density. The head adjusting lever is located on the left side frame of the print mechanism. Move forward to widen gap. -
Page 24: Fig. 19 Cap Adjustment
Head Adjusting Lever (Side View) Position of adjusting lever Paper Single-leaf paper Set the lever to the 4th step. Set the lever to the 7th step. Multi-copy paper sheets Fig. 19 Gap Adjustment - 1 9 -... -
Page 25: Operation
Power On 1. Plug in AC power cord. 2. Turn on the Printer - switch located to the rear on the right side of the Printer. 1) Buzzer will sound. 2) Print head will return to the left side of the Printer. -
Page 26: Self-Test
(ribbon, motors, belt, etc.). The input connector is not checked with this test. 1. Be sure there is an adequate supply of paper in the Printer. The test requires about 22 inches. -
Page 27: Theory Of Operation
Pin No. 4. Theory of Operation The data received by the MX-85 is stored in the 4K Byte Memory. Printing is initiated by the following means: 1. Receipt of the Carriage Return (CR) or Line Feed (LF) Control codes. 2. An excess of 80 characters (1 line) in the print buffer. 3. -
Page 28: Paper Empty
4.2. Paper empty The paper empty switch located beneath the platen will activate when the paper runs out. When activated, the following conditions will take place: Status - DTR pin 20 = Mark (-V) Rev Chan pin 11 = Mark (-V) Data Entry - Available until buffer full Indicators - “Paper Out”... -
Page 29: Paper Tear-Off
1. To tear off the last message printed, depress the FF button to position the paper. 2. Hold down the printer cover while tearing the paper. 3. Check to see that the paper is against the platen and that the paper has not shifted. -
Page 30: Maintenance And Parts Replacement
Preventative Maintenance of the MX-85 consists mainly of cleaning. 1. Paper dust and particles should be cleared away with a soft brush. 2. The exterior of the Printer can be cleaned with a mild detergent and water solution. 3. The interior of the Printer can be cleaned with denatured alcohol. -
Page 31: Fig. 22 Replacement Of Print Head
Head Lock Lever Carriage A&embly (Side View) Fig. 22 Replacement of Print Head - 2 6 - Print Head Unit Terminal Board Head Connector Be sure to hold this con- nectar firmly to pull the head cable out straight. *Take hold of the cable at the point indicated by arrows and apply... -
Page 32: Appendix A Ascii/Baudot Code Table
Appendix A ASCII Code Table (low order bit) is normally transmitted first. - 2 7 -... -
Page 33: Appendix B Baudot Code Table
Appendix B Baudot Code Table - 2 8 -... -
Page 34: Appendix C Character Fonts
Appendix C Character Fonts (Hex. Code) NOTE: Numbers represent Hex. - 2 9 -... - Page 35 NOTE: Numbers represent Hex. Code. - 3 0 -...
- Page 36 FEDERAL COMMUNICATIONS COMMISSION “This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio and tele vision reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifi cations in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residen tial installation.