Amstrad DMP-1 User Manual
Contents
1. EX 200900 CHR ECHR 75 gt 18 PRINT 8 28 PRINT 8 30 END B Intermixed 18 PRINT 8 16 18 PRINT 8 CHRE 27 gt CHRSKC 79 2 CHR O X CHRSCT FOR i l TO 7 48 8 CHRCA 2 58 DATA 8 28 34 65 34 20 8 90 PRINT 8 CHRSC 140 LOVELY PRINT W8 CHR CIS 100 END LOS EL LADY LINE FEED SPACING When operating in the character mode line feeds are generated at 1 6 pitch When operating in the graphics mode selected by using codes ESC nc or FS n GD line feeds are set to 1 9 pitch Having returned to the character mode after graphics printing it will be necessary to reset the line feed pitch to 1 6 by using codes SI or SO 6 lines inch 9 lines inch Standard and double width character modes Graphics mode AUTOMATIC PRINTING Printing takes place automatically when either of the two conditions listed below occurs 1 During data input the buffer becomes full and where the next inputting data is print data 2 Where one print data of character cannot be printed within the 480th dot column in the character printing mode the input data prior to it is printed automatically the remainder being printed from the first column of the next line In cases where either of the above two con2. NOTES Always wait at least 10 seconds after switching the DMP1 off before switching it back on again The initialisation process may otherwise not be performed correctly The DMP1 should be used where the humidity is low where there is little dust and where it is not in direct sunlight The operating temperature range is 5 C to 40 C Rapid temperature variations are to be avoided Be sure that the power is turned off to both the printer and the computer before connecting or disconnecting the signal cable from the computer Do not turn the power off while the DMP1 is printing Regardless of whether the power is ON or OFF do not try to move or apply undue force to the print head Do not touch any of the moving parts of the DMP1 while it is in operation Do not operate the DMP1 without the ink ribbon cassette and paper properly installed Failure to do so will cause damage to the print head and platen Disconnect the Mains Plug from the Supply Socket when not in use Never attempt to remove any screws or open the case of the DMP1 Always obey the warning the Rating Label which is located on the back panel of the DMP1 WARNING LIVE PARTS INSIDE DO NOT REMOVE ANY SCREWS In keeping with our policy of continually improving our service and the technical quality of our products we reserve the right to change component types manufacturers sources of supply or technical specification at any time AMSTRAD CONSUMER ELECTRO
3. and the circular hinge holes facing downwards 2 Lower the paper shelf so that the hinge holes locate over the hinge pegs which you will find justin front of the red WARNING label The paper shelf may now be hinged to an up or down position To load the paper keep the paper shelf up see Figure 7 NOTE THE DMP1 WILL ONLY ACCEPT TRACTOR FEED TYPE PAPER Paper shell AO Figure 7 3 Ensuring that the Head Adjustment Lever is fully towards the front of the printer feed the paper into the rear of the printer behind the paper shelf Keep feeding in the paper until you are able to pull it through when it emerges inside the printer mechanism 4 On either side of the central rubber roller you will see an enclosed plastic cogged wheel These are called tractors and they transport the paper through the printer mechanism Slide either of the tractors sideways if necessary until its cogs line up with the holes in the side of the paper 5 Open the tractor covers by flipping the tops outwards see Figure 8 Tractor covers Tractor cover Figure 8 6 Position the paper so that its holes are aligned over the cogs then close the tractor covers over the paper ENSURE THAT THE PAPER IS POSITIONED SO THAT THE BEGINNING OF THE PAPER ON THE LEFT HAND SIDE IS BEHIND THE PRINT HEAD The paper shelf at the back of the printer can now be laid flat see Figure 9 Figure 9 The paper feed knob on the rig
4. application where unlimited line wrapping is required this can be achieved by typing in MIOTH 255 A WIDTH command can be entered into the computer in direct or program mode Formatting Formatting the display on the monitor screen using the ZONE PRINT TAB PRINT SPC and PRINT USING commands can be similarly applied to printer operation See Chapter 3 pages 6 and 7 and Chapter 8 pages 53 54 and 55 of the CPC464 User Instruction book TECHNICAL INFORMATION FOR THE USER PRINT CONTROL FUNCTIONS Function Code Table CODE NO SYMBOL FUNCTION HEX DEC NL oa 10 Both a line feed and carriage return are executed after printing Both a line feed and carriage return 2 CR 00 13 or carriage return only switch select able are executed after printing 3 ET 20 Carriage return is executed after printing 4 so DE 14 Double width character specification 5 si oF 15 Standard character specification DLE 16 16 Print position specification in charac ter units 7 18 10 27 16 pint position specification in dot 8 esc K 1B 48 27 75 Graphics printing specification FS 16 gg Specifies the repetition of one byte of graphic print data 12 Function Code Explanation 1 NL 0 Hex 10 Decimal Print command Input of this code causes the data in the printer s buffer to be printed
5. cassette out of the DMP1 see Figure 5 To fit a new replacement ribbon cassette ensure first that the Head Adjustment Lever is fully towards the front of the printer then simply follow the previous instructions for fitting the Ribbon Connecting the Printer to the Computer Having carried out the procedures described in the previous sections the printer may now be con nected to the CPC464 computer by following the instructions below 1 Check that both the DMP1 printer and the 464 computer are switched off 2 The connector at the rear of the DMP1 is a Centronicsstyle socket Figure 6a which you should find easily distinguishable from the PCB edge connector used at the rear of the 464 Figure 6b 3 The DMP1 is supplied complete with a cable Figure that allows direct connection to the PRINTER connector at the rear of the CPC464 Figure 6 also shows how this cable is to be fitted Firm pressure will be required to ensure that a good connection is made 4 After connecting the Centronics style plug into the rear socket of the lock the plug into position by pressing the metal clips either side of the socket into the cut outs at the side of the plug Overhead view Loading the Paper in the main carton Fit the paper shelf The tinted perspex paper shelf will be found packed wii to the back of the as follows 1 Hold the paper shelf vertically with the flat face towards you
6. smeared n 2 3 The print head position is not correct Set the head adjustment lever to match the type of paper being used The ribbon cassette is not properly installed Correctly install the ribbon according to the instructions in this book The ink ribbon is worn Replace the ribbon The POWER LED is flashing on and off 1 An error condition has occurred due to the detection of abnormal timing in a sensor Switch power off wait approx 10 seconds then switch on again 24 TECHNICAL SPECIFICATION Print method Print direction Character matrix Characters Character code Dot spacing Character pitch Character columns Print speed Line feed spacing Line feed speed Graphics Multiple copi Paper width Power supply Dimensions Weight Impact dot matrix Unidirectional left to right B width x 7 height 1 space 128 upper lower case characters numerals and symbols 7 bit ASCII 1 60 H x 1 63 V 10 characters inch 80 columns character mode 480 dot columns graphics mode 50 characters second 6 lines inch character mode 9 lines inch graphics mode 10 lines sec at 6 lines inch 15 lines sec at 9 lines inch Any combination of 7 dots in a vertical column Two including original Thickness 0 15mm or less 4 5 to 10 inches acceptable pin to pin 4 to 9 5 inches 220 240 V AC 50Hz 315 0 x 447 W x 114 H mm 4 8kg IMPORTANT
7. 18 10 Hex 27 16 Decimal This designates the print position in dot units n is 2byte binary data used to indicate the print position away from the home position and is treated as a single 9 bit binary data inside the printer 13 Ds D D x ne nue no nua n don t care 256128 32 16 21 O lt mom lt 479 If n gt 480 the four bytes of ESC because maximum number of dot column is 480 Value DLE nu are ignored Example Printing character at the 10th dot column and character at the 384th dot column can be exeucted by inputting the following data sequence in hex 18 10 42 18 10 02 143 8 c Esc K mn nd 18 48 n HEX 27 75 m DECIMAL This command specifies graphics printing mode The data to dot correspondence is as follows TOP DOT BOTTOM DOT x Po Ps Ps BEE P Ds D De Ds Ds Ds D Di 32 16 8 4 2 1 x don t care nu is 2 byte binary data used to indicate the numbers of the graphics characters which follow and is treated as a single 9 bit binary data inside the printer 0 lt lt 479 14 Example Ex1 Ex3 TET 9 FS GD 1C n GD H
8. AMSTRAD UWNERS MANUAL DMP 1 DOT MATRIX GRAPHIC PRINTER CONTENTS SETTING UP THE DMP 1 Connecting the Mains Lead Preparation Fitting the Ribbon Removing the Ribbon Connecting the Printer to the Computer Loading the Setting the Head Position USING THE DMP 1 Switching on Operation Testing WIDTH command Formatting TECHNICAL INFORMATION FOR THE USER PRINT CONTROL FUNCTIONS Function Code Table Function Code Explanation PROGRAM EXAMPLES LINE FEED SPACING AUTOMATIC PRINTING SELF TEST PRINTING DIP SWITCH SELECTION CHARACTER CODE TABLE INTERFACE Connections Input Output Signal Electrical Characteristics Timing TROUBLESHOOTING GUIDE TECHNICAL SPECIFICATION IMPORTANT NOTES SETTING UP THE DMP 1 Connecting the Mains Lead The Mains Lead is fitted at the rear of the unit Fita proper Mains Plug to the Mains Lead If a 13 Amp BS1363 Plug is used a 3 Amp Fuse must be fitted The 13 Amp Fuse supplied in a new Plug must NOT be used If any other type of Plug is used a 5 Amp Fuse must be fitted either in the Plug or Adaptor or at the Distribution Board WARNING THIS APPARATUS MUST BE EARTHED IMPORTANT The wires in this Mains Lead are coloured in accordance with the following code Green and yellow Earth Blue Neutral Brown Live As the colours of the wires in the Mains Lead of this appar
9. Fitting the Ribbon The ribbon should be fitted when there is no paper loaded into the printer The ribbon for the DMP1 comes in the form of a cassette which you will find in its own small box packed within the main carton Remove the ribbon cassette from its polythene bag and gently turn the knob on the top of 1 the cassette in the direction indicated by the arrow to straighten the ribbon at the front of the cassette see Figure 2 Cassette knob Figure 2 2 Place the cassette so that the ribbon slides in between the print head and the platen see Figure 3 then place the cassette down into position between the latching clips either side of the cassette The left side of the Cassette should be located down into its latching clip The right side of the cassette however may still be raised above its locating position if so carry out instruction 3 as follows 3 While turning the cassette knob in the direction indicated by the arrow press downwards on the right hand side of the cassette until it locates down into the right hand latching clip see Figure 4 Figure 4 IMPORTANT NEVER USE THE DMP1 WITHOUT RIBBON OR PAPER FITTED THE PRINT HEAD AND PLATEN WILL BE DAMAGED Removing the Ribbon To remove the ribbon cassette slide the Head Adjustment Lever fully towards the front of the DMP1 as described in Preparation Part 3 then move the right hand cassette latching clip gently outwards and lift the
10. NICS PLC BRENTWOOD HOUSE 169 KING S ROAD BRENTWOOD ESSEX CM14 4EF Telephone Brentwood 0277 228888 Telex 995417 Amsele G If you have any enquiries relating to this unit or to any of the AMSTRAD or AMSOFT range of computer products and peripherals contact Amsoft Technical Enquiries on Brentwood 0277 230222 during normal working hours 8408 558
11. OFF oFF DENMARK s_ eje s Ton ITALY 3 on on OFF SPAIN RS N 4 al ON ON ON 18 DIP switch 4 is for changing CR code meaning ON OFF CR is identical to CR is identical to DC4 CHARACTER CODE TABLE LEBKU E 70123456789 Co TIERBCDEFGHI JKLMNOPORSTUVIDLYZE J abedef 9hi vk Imno Upper T Bit Hex Binary 0000 0001 oo ms 1 0001 1 2 ono oon n a 5 jom r e ool n m o t pm 9 cy 1010 1 Von ml c 100 m 1101 ERAS pas e w ua pl Circled characters are selected by the positions of DIP switches 1 2 3 19 INTERFACE Connections Input connector on the printer and the signal pinout DDK 36 pin BAIL LOCK TYPE 57 LE 40360 2708 D3 PIN SIGNAL PN SIGNAL STROBE 19 TWISTED PAIR GND PAIR WITH 1 PIN 1 2 DATA 1 20 TWISTED PAIR GND PAIR WITH 2PIN 3 DATA2 2 TWISTED PAIR GND PAIR WITH 3PINI 4 DATA3 22 TWISTED PAIR GND PAIR WITH 4 PIN 5 DATA 4 23 TWISTED APRIGND PAIR WITH 5 PIN DATAS 24 TWISTED PAIR GND PAIR WITH 7 DATA 6 25 TWISTED PAIR GND PAI
12. R WITH 7PINI 8 DATA 26 TWISTED PAIR PAIR WITH BPIN 9 DO NOT USE 2 TWISTED PAIR GND PAIR WITH 10 ACK 28 TWISTED PAIR GND PAIR WITH 10 PIN n BUSY 20 TWISTED PAIR GND PAIR WITH 11 PIN 2 LOW 30 GND 13 NC INITIAL PAIR WITH 14 PIN 14 GND 32 ERROR IPAIR WITH 15 PIN 15 GND 33 GND 16 34 NC 17 CHASSIS GND 35 TEST PAIR WITH 16 PIN Los 45V 80mA Max 36 NC NOTE 1 NC stands for no connection 2 LOW is the LOW LEVEL output of 741504 Signal cable length Maximum length is two meters with the following signals forming twisted pairs with the GND STROBE INITIAL BUSY ACK ERROR Input Output Signals a Input signals to the Printer DATA 1 DATA2 DATA3 DATA4 DATAS DATA DATA 8 STROBE TEST 7 bit data signals Signal HIGH represents Logic 1 The strobe signal is used to read in 8 bits of data Data is read in when the signal goes LOI This signal is used to set the Printer to an initial state and is normally HIGH Bringing the line LOW and returning it HIGH starts the clearing action which sets the Printer to an initial state This signal is used for self test printing which is executed by bringing the line LOW b Output signals from the Printer BUSY ACK NOTE This signal indicates the BUSY status of the Printer When HIGH the Printer can not accept data This signal is used to indicate that the Pr
13. RETURN about 2 seconds Reference CR 0 D NL 0 DCA 1 4 b INITIAL signal input timing INITIAL Ll en _ Busy about 2sec 1 ACK 510 ps 1 During Ti the INITIAL line is LOW and the Printer is held in a reset state The initialisation sequence starts execution after the line goes HIG 2 After the Printer finishes execution of the the BUSY line goes LOW lisation sequence TROUBLESHOOTING GUIDE Use the table below to diagnose any problems that may occur If you cannot solve the problem try to establish which part of your system is not working correctly and consult your dealer PROBLEM CAUSE AND REMEDY The DMP1 does not print n 2 Power is not getting to the DMP1 Check the Mains Lead is connected and the ON OFF switch is ON The Fuse in the Mains Plug may be blown Replace it with a 3 Amp fuse The DMP1 does not print The POWER LED is on 2 The connection to the computer is not correct Check to make sure that the cable between the printer and the computer is correctly connected The ribbon cassette is not properly installed Correctly install the ribbon according to the instructions in this book The DMP1 is operating correctly but the paper is not feeding properly 1 The paper is jammed in the printer Remove the paper and reload it correctly The print is faint or
14. atus may not correspond with the coloured markings identifying the terminals in your Plug proceed as follows The wire which is coloured Green and Yellow must be connected to the terminal in the Plug which is marked either with the letter E or by the safety earth symbol Lor coloured Green or Green and Yellow The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Black The wire which is coloured Brown must be connected to the terminal which is marked with the letter L or coloured Red Disconnect the Mains Plug from the Supply Socket when not in use Never attempt to remove any screws or open the case of the DMP1 Always obey the warning on the Rating Label which is located on the back panel of the DMP1 WARNING LIVE PARTS INSIDE DO NOT REMOVE ANY SCREWS Preparation 1 Remove the adhesive tape on top of the DMP1 and open the tinted perspex printer cover by lifting the rear edge forward 2 Inside the printer mechanism you will see a corrugated black plastic tube with a label attached This tube must be removed before connecting the DMP1 to the Mains Supply To remove the tube simply pull on the attached label Figure 1 3 On the left hand inside wall of the printer mechanism you will find a metal lever located in a curved adjustment slot This is the Head Adjustment Lever and should be pressed in and moved fully towards the front of the DMP1
15. ays occur when the printer is first switched on The POWER indicator LED on top of the DMP1 will illuminate when the printer is switched on If the POWER indicator flashes on and off an error has been detected such as incorrect ini tialisation Under such circumstances switch the DMP1 off wait approximately 10 seconds then switch on again Operation It is assumed from here on that you are conversant with programming the CPC464 computer and have carefully read the main User Instruction book particularly its references to using a printer which will be found in Chapter 7 page 2 Testing To check the operation of the printer fully reset the computer and type in the following program 18 FOR 32 TO 126 20 PRINT 8 The above program will tell the DMP1 to print out each of the ASCII display characters followed by its corresponding reference number as shown in Appendix III of the CPC464 User Instruc tion book The reason that the characters were printed out by the DMP1 instead of being displayed on the monitor screen was the use of the expression 8 is a stream director It tells the computer to which stream the text must be directed Streams 0 to 7 40 to 47 are monitor display streams or windows with 0 being the default stream directed to if no stream is specified It can be seen therefore that 8 is the printer stream To demonstrate this aspect of operation edit li
16. ditions occur the last input data will remain in the buffer SELF TEST PRINTING Connecting the TEST line of 35 pin to the GND line of pin 15 on the input connector starts self test printing which continues until disconnected DIP SWITCH SELECTION You will find the DIP switches on the rear panel of the DMP1 next to the Centronics style con nector socket You will receive the DMP1 set by the factory for U K language characters see table below This will enable you to use programs which incorporate the sign such as home budgeting and accounting programs You should note however that when listing programs incorporating the sign it will be printed ast If at any time you wish to print signs simply set DIP switch No 3 off down It should then be noted that under this condition signs will be printed as s Setting DIP switeh No 4 on up will result in double line spacing by the printer as opposed to the normal single line spacing DIP switches 1 2 and 3 are used to select eight different language characters as follows Code HEX 1 E cu 40 so st 78 72 7 sw swa usa Torr OFF OFF m ts GERMANY 4 3 ojo a jorr SWEDEN ela orf on FRANCE SE e
17. ex data for ex 1 is data for ex 2 is 2 8 32 42 The graphics data for ex 3 is 16 32 64 112 28 n GD Decimal The command specifies the repeated printing of a graphic data n is the binary number of repetition and GD is one byte data for graphics n is in the range O 127 with O meaning that the graphics data is to be repeated 128 times oJolol l ToJo Rs Re Rs Re Ra Ra Ri Pr Pe Ps Pa x don t care 15 Pi FS code Number of repetitions Graphic data to be repeated PROGRAM EXAMPLES 1 LINE ONE LINE PRINT 8 za PRINT 8 38 END LINE ONE LINE THO 2 10 PRINT 8 LINE ONE 4 202 20 PRINT 3 LINE THO END LINE TNE 10 PRINT 8 CHRS 14 gt DOUBLE 20 PRINT 88 WIDTH PRINT 8 CHRS 15 STANDARD DEEL EE WIDTH STANDARD CH A PRINT 8 16 20 PRINT 8 BEAUTIFUL tA Y SALLY END 1 BEAUTIFUL LADY 5 Esc DLE PRINT 8 CHREC PRINT 8 Att 38 END CHR 1 CHRE 1222 tive Gill 16 PRINT 8 CHR 27 gt 75 7 D CHREC F R m 1 T 3 8 x RESTORE FOR 1 1 TO 14 e READ a 283 PRINT W8 CHE Ca e NEXT i NEXT m DATA 8 20 34 65 34 28 188 PRINT W8 CHRSC 15 118 EHD
18. ht hand side of the DMP1 may now be used to manually advance the paper Setting the Head Position The print head position is adjusted using the Head Adjustment lever on the left hand inside wall of the printer It should be set according to the thickness of paper being used Figure 10 below shows the 8 different setting positions of the lever which are indicated by the position of the lever foot in the click holes The settings graduate from position 1 for very thin paper to position 8 for thicker paper Position 3 indicated by a red arrow above the Head Adjustment slot is suitable for general purpose computer paper including Amsoft Printer Paper During insertion or removal of the paper or ribbon cassette the Head Adjustment lever should be set fully towards the front of the printer past position 8 The tinted perspex printer cover can now be lowered backwards to its closed position ready for operation Keeping the cover closed will help reduce noise and keep the printer mechanism dust free USING THE DMP 1 Switching On After each of the setting up operations described in the previous sections has been carried out the DMP1 is ready for use Switch on the computer and monitoring equipment Switch on the DMP1 using the ON OFF switch on the left hand side of the printer The printer head will move for a few seconds then come to rest ready for operation This process is called initialisation and will alw
19. inter is awaiting data The BUSY and ACK signals are always output when the Printer accepts data input ERROR A printer error condition causes this signal to go LOW When this happens the internal control circuits stop There are two ways to cor rect this situation 1 Switch the Printer off wait approximately ten seconds then switch again 2 Input the INITIAL signal An ERROR occurs and the POWER LED flashes on and off if the dot timing becomes incorrect n Electrical Characteristics Signal levels All input output signals are TTL level 2 4 gt 50V s the Printer input terminals HIGH level 0 0 0 4V LOW level Ti and Tr 100 ns or less T value shown on the timing chart b Input output conditions Input output signals are pulled up with 10 k ohms Input signals The input load corresponds to one 74LS04 Output signals The output corresponds to a 741 504 The recommended output load corresponds to one LSTTL load i used for the INITTAT IVI 7 and STROBE signals Input These are attached only to the INITIAL and STROBE signals 74 504 equivalent 1 oum 741504 equivalent 2 Timing a Data input DATA 1 7 E 1 10 Os vin L STROBE 0 05 2 7 Sees 17 0 us min susy th 5 10 us Tb CHARACTER CODE 50 ps or more GR NL DCA CODE PRINT CARRIAGE
20. ne 20 as follows and run the program again 20 PRINT 0 n You will note that the same text has now been directed to the monitor screen Similarly listing a program which is normally performed by typing in LIS can be directed to the printer by typing in LIST 48 WIDTH Command Using the WIDTH command enables you to select the number of characters per line to be printed by the DMP1 This command may also be used if the is to be operated with narrow paper 1f no WIDTH command is specified the computer will assume a WIDTH of 132 default It should be noted therefore that as the DMP1 will only print a maximum of 80 characters per line the remaining 52 characters will be wrapped onto the following line To demonstrate this aspect of operation fully reset the computer and type in the following program 20 FOR n 1 TO 132 30 PRINT 8 40 NEXT PRINT 8 10 Notice how the last 52 characters are wrapped onto the second line Now type in then run 18 WIDTH 44 The computer has now been instructed to set the number of characters per line to 44 Run the program again using the following WIDTH commands 18 WIOTH 12 then try 18 WIDTH 4 Note that the MODE in which the computer is operating ie 20 40 or 80 column bears no relationship with the size or number of characters per line on the printer When using the DMP1 for dot graphic printing or for any other
21. then a line feed and carriage return executed If there is no print data in the buffer a line feed alone is executed 2 CR 0D Hex 13 Decimal Print command Input of this code causes the data in the printer s buffer to be printed and brings the print head back to the home position The execution of a line feed after printing is determined by the setting of dip switch number 4 The print head does not move when there is no print data in the buffer 3 084 14 20 D Print command This code causes the data in the printer s buffer to be printed and a carriage return executed without a line feed In cases where there is no print data stored in the buffer the print head does not move ps OE Hex 14 Decimal The characters that follow this code are printed in the double width format 5 SI OF Hex 15 Decimal Input of this code clears the double width print mode and returns to the standard character print mode The latter mode is selected after applying power 6 DLE n n 10 Hex 16 n Decimal This is the command to specify the print position in character units ny n is ASCII code for a two digit decimal number where 0 lt lt 79 When ny n gt 80 the three byte of DLE ns is ignored Example If you wish to print at the 10th column input the four bytes of 30 39 hex 7 Esc DLE m
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