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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. This change will

necessitate a change in the filter circuit board, so your MX-85 supplier should be
notified.

NOTE:

Any changes in this area should be performed by

an

experienced technician.

Terminal Block

Lead Wire

/

Fig. 12

Setting of Power Supply Voltage

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Содержание M X - 8 5

Страница 1: ...M X 8 5 DOT MATRIX PRINTER Operation Manual P8290062 1 ...

Страница 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 ...

Страница 3: ...s and jumpers 9 3 1 Location of DIP switches and Jumpers 9 3 2 Setting DIP switches SW A and SW B 9 3 3 Setting of jumpers 12 4 Power Supply 14 5 Cartridge Ribbon Installation 15 6 Paper Holder Installation 16 7 Gap Adjustment 18 OPERATION 20 1 LF FF Functions 20 2 Self Test 21 3 On Line Operation 21 4 Theory of Operation 22 4 1 Low paper 22 4 2 Paper empty 4 3 4K memory full 23 5 Paper Tear off 2...

Страница 4: ...Location of DIP Switches 9 Fig 10 Setting DIP Switches 10 Fig 11 Jumpers on the SMCT Board 13 Fig 12 Setting of Power Supply Voltage 14 Fig 13 Cartridge Ribbon Setting 15 Fig 14 Cartridge Ribbon Setting 16 Fig 15 Examples of Correct and Incorrect Ribbon Setting 16 Fig 16 Loading of Roll Paper 1 17 Fig 17 Loading of Roll Paper 2 18 Fig 18 Loading of Roll Paper 3 18 Fig 19 Cap Adjustment 19 Fig 20 S...

Страница 5: ...IP Switch B 10 Table 2 Function and Conditions of DIP Switch A 10 Table 3 Baud Rate Selection 11 Table 4 ASCII Code Table Selection 11 Table 5 BAUDOT Code Table Selection 11 Table 6 Function and Conditions of Jumpers 12 Table 7 25 pin EIA Connector 22 v ...

Страница 6: ...RS 232C and 20 to 80 mA Current Loop 4 Transmission Code ASCII and Baudot 45 5 to 9600 baud 5 Buffer size 4K Bytes 6 High quality and reliability 7 High density print quality 9x7 Matrix 8 Operator replaceable low cost dot head with 100x106 character life 9 Operator replaceable ribbon cartridge with 3x 106 character life Black 10 Standard Roll Paper Holder 11 Options 1 Roll Paper Rewind 2 Tractor F...

Страница 7: ... 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 NOTE Be sure shipping screws and protective sheet for paper sensor are reinstalled It is highly recommended that all original material be retained...

Страница 8: ...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 4 Roll Paper Holder 3 Operation Manual 1 MX 85 Dot Matrix Pritner 5 AC Power Cord Fig 2 Contents of Carton 3 ...

Страница 9: ... the MX 85 to temperatures below 5 C 41 F or above 35 C 95 F during operation Also avoid sudden changes in temperature and extreme shock 1 5 Assembly The following items will be necessary to complete the set up of the MX 85 Printer 1 Phillips 2 screwdriver 2 Flat blade screwdriver 3 Soldering iron if jumper revision is necessary 1 6 Opening the printer With the Printer facing you grasp the cover f...

Страница 10: ...ide of the Printer Fig 4 Removal of Shipping Screws 1 8 Removal of the upper case In order to check or change settings of the internal switches and jumpers it is necessary to remove the upper case NOTE Before proceeding be sure that the MX 85 is completely disconnected from external sources Also adequately discharge any static electricity which may be present on your person to prevent damage to an...

Страница 11: ...treme corners of the bottom cover NOTE 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 Phillips Head 2 Screwdriver Fig 6 Loosening All 4 Screws 6 ...

Страница 12: ...struction 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 SMCT Board Bottom 4 Printer Mechanism M 3310 5 Control Panel 7 ...

Страница 13: ...nel Transformer Filter Circuit Board 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 ...

Страница 14: ... with plastic dust covers which pull off Remove them and set aside for later replacement The switches set to the left are ON and to the right are OFF 2 Tables 1 and 2 outline the function of each switch position Be sure power is off when changing the position of any switch 1 Switch B the four 4 position switch is used only to select correct baud rate 2 Switch A the eight 8 position switch is used ...

Страница 15: ...ions of DIP Switch A Pin No Function Off On Factory set A 1 Transmission ASCII BAUDOT OFF C o d e A 2 I n A S C I I m o d e See Table 4 ON A 3 sets Word Struc ON ture A 4 In Baudot mode See Table 5 ON s e t s C o d e T a b l e A 5 Line Spacing 1 3 1 6 ON A 6 AUTO FEED XT Invalid Valid OFF A 7 Not used OFF A 8 OFF 3 At this time refer to Table 3 and set the baud rate to your requirements 10 ...

Страница 16: ...s is necessary if the host system does not transmit line feed control code Details of the coding structures are contained in Appendix A for ASCII and Appendix B for Baudot Table 3 Baud Rate Selection Note 1 ON Table 4 ASCII Code Table Selection Pin No Function A2 Data Length A3 Parity Check A4 Parity off 8 bit Enable Even On 7 bit Disable Odd Factory set ON ON ON Table 5 BAUDOT Code Table Selectio...

Страница 17: ...rear center in the connector area to avoid damage NOTE Any changes in this area should be performed by an experienced technician Table 6 Function and Conditions of Jumpers J u m p e r Function Factory set J1 Not used OFF J2 ON RS 232C OFF Current Loop ON Note 1 J 3 OFF Level O N Level OFF J 4 Both ON Polar OFF J5 Both OFF Neutral OFF J6 Not used OFF J 7 Not used OFF J8 Current Loop USA Version ON ...

Страница 18: ...Jumper OFF Jumper ON Fig 11 Jumpers on the SMCT Board 13 ...

Страница 19: ...f it is necessary to change the voltage use a flat blade screwdriver to loosen the existing connection and reconnect to the desired voltage This change will necessitate a change in the filter circuit board so your MX 85 supplier should be notified NOTE Any changes in this area should be performed by an experienced technician Terminal Block Lead Wire Fig 12 Setting of Power Supply Voltage 1 4 ...

Страница 20: ...ts box and turn the knob counterclockwise to remove any slack 5 Guide the four 4 tabs on the cartridge into the mechanism side frames 6 Press down on both ends of the cartridge to firmly seat it 7 Using a pencil or a similar item place the ribbon between the front of the head and the ribbon guide 8 Wind the ribbon counterclockwise and verify correct positioning Fig 13 Cartridge Ribbon Setting 1 5 ...

Страница 21: ...d Incorrect Ribbon Setting 6 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 1 6 ...

Страница 22: ...t the roil paper onto the paper holder 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 9 Restore the paper release lever to the rear and the print scale to the rear Position the plastic tubes on the print scale to retain the paper firmly 10 C...

Страница 23: ...p 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 Move rearward to narrow gap This lever can also be used to compensate for decreased print density due to ribbon wear after extended usage 18 ...

Страница 24: ...Head Adjusting Lever Side View Paper Position of adjusting lever Single leaf paper Multi copy paper sheets Set the lever to the 4th step Set the lever to the 7th step Fig 19 Gap Adjustment 1 9 ...

Страница 25: ...will be fed one line at a time while the switch is held depressed 2 Depress the Form Feed FF button Paper will be fed either 10 lines l S spacing or 5 lines 1 3 spacing This is preset by the position of DIP Switch A 5 Depression of this switch will position the last line printed above the tear off blade NOTE Both of these switches will function while On line If used while a message is being receiv...

Страница 26: ...e LF button can be released after printing commences NOTE See Appendix C for Character Fonts If any problems are encountered at this point contact your vendor for correction before proceeding Print sample 0123456789 AB ijklmnopqrstuvwxyz 0123456789 ABC j k l m n o p q r s t u v w x y z 0123456789 ABCD klmnopqrstuvwxyz 123456789 ABCDE 1mnopqrstuvwxyz 23456789 ABCDEF mnopqrstuvwxyz 3 On Line Operati...

Страница 27: ...uffer The MX 85 will continue to receive data and store it in the buffer memory while printing There are some conditions which will interfere with the ability of the MX 85 to receive and or print data These are 1 Paper Low 2 Paper Empty 3 4K Memory Full 4 1 Low paper The low paper sensor is mounted on the paper holder It is activated when approximately 7 meters 22 of paper is remaining This should...

Страница 28: ...aper roll This should be done with the power on to avoid losing any data Upon completion of paper loading the On Line button should be depressed This will activate printing if there are any printable characters stored in the memory The Paper Out indicator w be extinguished and the Ready indicator illuminated if the MX 85 is not in a memory full condition 4 3 4K memory full When the buffer memory r...

Страница 29: ...ed 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 Reposition if necessary Tear off the Paper Fig 21 Cutting Paper 2 4 ...

Страница 30: ...vious section of this manual Print Head replacement CAUTION The print head runs very hot under normal operating conditions Allow time for it to cool before attempting replacement 1 Remove the printer cover and cartridge ribbon 2 Turn the head locking lever clockwise and lift the print head straight up 3 Disconnect the cable carefully by pulling the plastic tab under the cable while holding the ter...

Страница 31: ... Be sure to hold this con nectar firmly to pull the head cable out straight Side View Take hold of the cable at the point indicated by arrows force in and apply either of the directions indicated by arrow to push in or pull out the head cable Fig 22 Replacement of Print Head 2 6 ...

Страница 32: ...Appendix A ASCII Code Table b1 low order bit is normally transmitted first 2 7 ...

Страница 33: ...Appendix B Baudot Code Table 2 8 ...

Страница 34: ...Appendix C Character Fonts Hex Code A F NOTE Numbers represent Hex 2 9 ...

Страница 35: ...NOTE Numbers represent Hex Code 30 ...

Страница 36: ...terference 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 ar...

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