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BIXOLON SRP-270 User's Manual

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1. nennen nin ariete rinse nni inne tria antri innen 45 6 1 Printer Adjustment ctio ee t ertet de da deoa roe x da dett eee nage ie d etae dans 45 Troubleshooting croire terere cp e Ratte teneret 46 51 Power Problem tu intent utto ust iet cim ds 46 2 System Problemi isir aet tin aat tr bur neo opt Du DU t Dee ein 46 23 Printer Problemi iac ie rtr du ter bee tio ets de e eene 46 724 Cash Drawer Problemi n rrr re tee aea P Per a ao er o eer t ee eae 46 T SIDIPSAW Problem sube rm aret E A e ien eate 46 6 5292 Problems zt eric cte re aeter TA A ese 46 T t RO48 5 Problem tt oe tea ftt ea en cea ut utm egets e e ee 46 8 EEE 1284 Problem Lee tr tete ctae ten a dere oa eter ici tete e tees ea 47 29 USB Problem hits ai chee aeri tesa echt ss eee ete ae katie ide ie mete 47 8 Appendix Spec 710 710 42 4444552 48 9 1 48 8 1217 eb Ebr e IEEE extat cedi 48 8 1 2 Character speci
2. Item Description Remark Data Transmission 8 bit Parallel Synchronization External supplied nStrobe signals HandShaking nACK and Busy signals Signal Level TTL compatiable Connector Centronics 36P Table 3 18 IEEE 1284 Specification Rev 3 02 25 3 5 3 b Reverse Mode Specification Nibble Byte mode Data transmission from the printer to the host computer The STATUS data transmission from the printer to the host computer is accomplished in the Nibble or Byte mode This mode allows data transmission from the asynchronous printer under the control of the host computer Data transmission in the Nibble mode are made via the existing control lines in units of for bits Nibble In the Byte mode data transmission in accomplished by making the 8 bit data lines bidirectional Neither mode can operate at the same time as the compatibility mode so switching is always required 3 5 3 c Signal Specification Compatibility Nibble Byte mode SRP 270 Pin No Source Compatibility Mode Nibble Mode Byte Mode 1 Host nStrobe HostClk HostClk 2 Host Printer Data 0 LSB Data 0 LSB 3 Host Printer Data 1 Data 1 4 Host Printer Data 2 Data 2 5 Host Printer Data 3 Data 3 6 Host Printer Data 4 Data 4 7 Host Printer Data 5 Data 5 8 Host Printer Data 6 Data 6 9 Host Printer Data 7 MSB Data 7 MSB 10 Printe
3. Item Description Remark Standard ERC 38 Black Red Color Black amp Red Size 13 mm W x 6 mm L ERC 38 B P 1 500 000 Characters Black Life 750 000 Character Red Continuous Printing 7 x 9 Font ASCII 25 C 3 3 10 Other Component Specification Item Description Remark Paper End Sensor Reflection Type Micro Switch je Moll bipanEie Micro Switch Factory option ensor 3 4 SMPS Specifications 3 4 1 SMPS Switching Mode Power Supply Specification Item Description Remark Input Voltage 100VAC 240VAC Input Current 1 5A Max Line Regulation 24V 1 Load Regulation 24V 5 Ripple Noise Peak 300mV O C P 2 3A 2 5A Over Current Protect 3 4 2 SMPS Output Connector Pin Number Signal Name 1 24 VDC 2 GND Power Connector Rev 3 02 21 SRP 270 3 5 Interface Specifications 3 5 1 RS 232C Serial Interface 3 5 1 a Specification Item Description Remark Data Transmission Serial Synchronization Asynchronous HandShaking DTR DSR XON ASC Code 11h Flow Control S W XOFF XOFF ASC Code 13h Logic 1 MARK 3V 15V Signal Level Logic 0 SPACE 3V 15V Baud Rate e 19200 2400 4800 9600 Bps Data Word Length e 7 Bit 8 Bit Parity e None Even Odd Connector DB25P Female I F PBA Tab
4. O Ol IQ IO ERE NE 8 EI HAMEET 1 24 mm 0 049 M 4 0 159 nn 0 006 Character structure pied Ana ed Characters Per Characters Per Horizontal x Vertical Character Set WxH G ata Line cpi Inch cpi oars 122 3 dots 40 16 Graphics 15 1227 0 40 16 ANK 065 122 half dots 33 13 3 Graphics toro 122 0 33 13 3 ANK 6 vend 22 2half dots 42 17 8 Graphics 2 0 42 17 8 a ANK 063 122 2half dots 35 14 5 Graphics ore 122 0 35 14 5 NOTE The default font is 7x9 the dot spacing between characters is either 3 half dots or 2 half dots depending on programming Rev 3 02 49 8 1 3 Paper specifications SRP 270 Item Description Paper types Paper roll Platen paper or pressure sensitive paper Paper roll width 76 0 5 2 99 0 20 Paper roll maximum diameter Q83mm 3 27 Paper roll core Unless there is an optional near end detector you cannot use a paper roll with the core and paper glued together Normal paper Thickness 1 sheet 0 06 to 0 085 mm 0024 to 0034 Weight 52 3 to64g m2 13 9 to 171b 45 to 55kg 1000 sheets 1091x788 Pressure sensitive paper Original sheet up to 1 copy sheet 1 sheet thickness 0 05 to 0 08mm 0020to 0031 Total thickness 0 2mm 0078 or less Manual cutter position 23
5. a cp E Solenoid o e 4 o Start Point E i First dot is out On escaping from home sen Description of Timing chart 1 D 14Step 28T Head carriage step motor moves left 14step after covering the home sensor The maximum distance of head tip to move left is 18step so we can make room for moving space of Astep exactly 1 2696 mm 2 This area is consisted of 3 region Accelerating area of left side 30T constant speed area 6T vertical alignment adjustable time 3T 8 400T printing area when printing 40 characters of 7x9 font space between one character and another one is 3T 4 421T printing area decelerating area of right side 24T Printing area includes part of right side area 5 24Step Paper feeding area 6 24T Distance until outing of head pin when printing from right to left 7 400T Printing area 436T Printing area decelerating area of right side 8 The start position of head carriage tip On uncovering of home sensor 17 When outing the first head 2 When paper is feed Rev 3 02 99 SRP 270 Description of Timing chart 2 3 When head carriage step motor stops left left The start position of head carriage step motor from right to left 5 When first outing of head pin from right to left When last outing of head pin from right to left and when starting line feed b When ending of printing from fight to left The start
6. Rev 3 A Serial Self Test Sheet BACKLASH 8 0 DIPSU ill 1 6 BACKLASH 8 1 TDIPS 1 S OFF i amp FF BACKLASH 4 2 DIPS t Hil bl pi li mmm Tm M BACKLASH 3 m li L AUJUSTES VERTICAL ALIGNMENT CHECK SHEET HHHHHHHHHHHHHHHHHHHHHHHHHRHHHHHBHHHHHHHH HHHHHHHHHHHHHHHHHHHRHHHHHHHRHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHEHHHHHHHH 1 8 2 amp 38 7 0123456789 1 gc I BARCTET GH BELG K 0123456707 5 CEP TRABCDEFGHT yi 0123456702 1 CES TEARCBEFGHTI 28 K 7 01234565789 3 4222 BABCDEF GHIJE BR 338 7 0123456789 p 3 YRARCREF GHIJKL amp 3 0123455789 lt gt BABCBEFGHTOKLM Jat 70123456789 t CE BABCBEFGHTTRLHN 3 7 0123456789 1 122 7RABCDEFBHT JKLHNG mM 1 0123458789 15 7 RABCBEFGHI JKLENOP 3t 0123456107 3 22 2BABCBEFGHI JKLMNOPU 7 70123456787 C gt BABCTIEFGH T TRE HNOPOR 474 0123455789 5 22 8ARCDEFBHIJKLMMOPQRS 0123458789 2 RARCDEFGHIIKLHNOPORST 70123456799 1 ETD BABCBEF GHI JKLMNOPURSTU 123456789 lt gt 7BARCREPGRIIKL ANDPARS THY 0123456789 3 lt gt 7GARCOEFGHI JKLHNOPQRSTUVU 012345578
7. 6 The character test sheet to be printed is that four lines are printed as BLACK color and the next four lines are printed as RED color in turn Total 20 character lines will be printed 7 The self test automatically ends and cuts the paper after printing the following Character Test Completed 8 Back Lash printing is possible when the DIP switch 1 7 is ON or the printing is skipped when the DIP switch 1 7 is OFF 9 The printer is ready to receive data as soon as it completes the self test Rev 3 02 13 A Serial Self Test Sheet SRP 270 VER 0 03 2000 06 23 SWITCH 582 501 STATUS 12345678 12345578 ON XY OFF XXX AXE x Serial R5232C Interface Baud Rate 7600 bps Data Bits 8 bits HandShake DTR TIGR Parity Check No Parity Receive Error Ignore AutoCutter Status 5 Enable Buffer Size 4K Bytes Epson Emulation Mode Self test printing Please press the FEED button om Rev 3 02 14 SRP 270 B Parallel Self Test Sheet SRP 270 VER 80 05 2000 06 25 Se eda Ee 6 SWITCH 52 501 STATUS 12345678 12345678 QN kok XXxb Xk Xx Parallel JEEEIZA4 Interface Receive Error Ignore AutoCutter Status Enable Buffer Size 4K Bytes Epson Emulation Self test printing Please press the FEET button Black Red Black Red Black
8. Check the Diode Check the Input Signal DIP C1 C4 Check the related Circuit amp Pattern 7 6 RS232 Problem Check the connection of the RS 232C CONN and Other side Check the I F Cable whether it is open or short Check the Txd Rxd Pin on CPU Check the MAX232 Driving Chip and related Circuit on I F PBA Check the connection of the H W handshaking Line and Other side DTR DSR 7 7 RS485 Problem Check the connection of the RS 485 Connector and Other side Check the I F Cable whether it is open or short Check the TXD RXD Pin on CPU Check the MAX488 Driving Chip and related Circuit on I F PBA Check the connection of the HAW handshaking Line and Other side DR1 2 CS1 2 Check the Voltage Level of each Line Rev 3 02 46 SRP 270 7 8 IEEE 1284 Problem Check the Control Line CS3 WR RD Check the 1284 Control Line and Status Line Check the Signal of ICs U3 U6 U5 Check the related Circuit and Pattern on I F PBA Check the 1284 Control Status Data Line 7 9 USB Problem Check the Control Line amp Signal CS3 RD WR INT Check the Data Line amp Signal Check the Connector 34P Check the Clock 48MHz Check the related Circuit and Pattern on I F PBA amp Main PBA Check the D whether it is Pull up to V3 3 Check the USB Cable whether it is open or short Rev 3 02 47 SRP 270 8 Appendix Spec of SMP 710 710N 8 1 Specifications
9. SMP 710 SMP 710N Print Method Serial Impact Dot Matrix type 9 Pin Dot Printing Direction Bi Direction Printing Speed 4 6 Lines Sec 9 x 7 Font 40 Columns Printing Resolution 160 W x 144 L DPI Paper Feeding Performed by Step Motor Paper Rolled Paper W 76 0 5 x e 83mm Supply Voltage 24V 10 Step Motor Head 5V 10 Home Sensor Motor Driver IC Connector 30P Dot Head Sensor Signal Motor Control and Power Input LIFE Approx 20 Million Print Lines Head Life Approx 300 million Dots Wire Weight Under 650g Excluding Ribbon Cassette Auto Cutter Rev 3 02 18 3 3 2 Character Specification SRP 270 Item Description Remark Dot Interval 9 93 To mm V 0 3528 mm Font Type ASCII Chinese Print Font 9x9 7x9 16 x 16 Printing Columns 33 40 Character Size mm 3 2 x 1 7 3 2x 14 5 7 x 3 0 Column Interval mm 2 13 1 59 3 19 Line Interval 1 6 1 6 1 3 3 3 3 Printer SMP 710 SMP 710N Pin Description Pin No Pin Name Descriptions 1 Printer Head Head 6 2 Printer Head Head 8 3 Printer Head Head 4 4 Printer Head Head 9 5 Printer Head Head 2 6 24 The Voltage for Driving Print Heads 7 24Vdc The Voltage for Driving Print Heads 8 24Vdc The Voltage
10. 5 11 Interface Board Assy 1 Before you disassembly the Interface Board Assy you should remove Plate Bottom see Chapter 4 2 Cover Assy see Chapter 4 3 amp 4 4 Case Upper Assy see Chapter 4 6 Printer Assy see Chapter 4 7 amp 4 8 2 Remove two screws and take out the Interface Board Assy as shown below Rev 3 02 44 SRP 270 6 Alignment and Adjustments 6 1 Printer Adjustment When assembling this printer be sure to refer to the required adjustment procedure To ensure normal operation of the printer after disassembly or replacement of a Component for maintenance or repair Be sure to perform along to the required method Adjustment of Head gap Adjustment Step Description Points in Adjustment 1 Rotate Gear Ist Reduction to move the Head unit to L side 2 Insert the thickness gauge between Head unit and Appropriate gap 0 50 0 60mm Platen then rotate the Ad Level L and adjust the gap Frame Main In order to make the gap narrow wide turn Ad Lever to mark Platen s lt tu Head Printer 3 Move the Head unit then check if the proper gap from R side center has been achieved If Head gap is not proper adjust Head gap by 4 rotating Ad Lever R R is not correct repeat once Replacement of Head unit Follow below steps for replacing Head unit 1 Loosen the Ribbon frame 2 Disassemble the Head unit from the Head Carriage and t
11. 93 90 2 80 CO t 40 C 104 F 65 Humidity 3 40 B pena TEASER 50 C 122 F 35 1 L 20 2 1 T 0 1 0 10 20 30 40 50 Environmental Temperature Vibration resistance When packed Frequency 5 to 55Hz Acceleration 5G Sweep 10 minutes half cycle Duration 1 hour Directions x y and 2 Impact resistance When packed Package SMP 710 710N standard package Height 60cm 23 62 Directions 1 corner 3 edges and 6 surfaces When unpacked Height 5cm 1 97 Directions Lift one edge and release it for all 4 edges Rev 3 02 54 8 1 6 Reliability SRP 270 Description MCBF This is an average failure interval based on failures relating to wear out and random failures up to the life of 18 million lines 8 1 7 Main Unit specifications Item Description Type 4 phase 48 polarity PM type stepping motor Paper Drive voltage 24 VDC 10 Feed Motor Winding resistance 100 10 at 25 C 77 F per phase Current consumption Average 400mA at 24 VDC 25 C 77 F 570mA maximum Type 4 phase 48 polarity PM type stepping motor Drive voltage 24 VDC 10 Carriage Motor Winding resistance 100 10 at 25 77 F per phase Peak 1 5 Ain maximum P Average 400mA at 24 VDC 25 C 77 F 570mA maximum Number of solenoids 9 Pr
12. emory SRAM 256Kbits KM62256 Interface Serial RS 232C RS 485 Flow Control 1 DTR DSR H W Flow Control 2 XON XOFF S W Flow Control Baud Rate 1200 2400 4800 9600 Bps The Flow Control Baud Rate Stop Bit and Parity are determined by DIP Receive Buffer 4 Kbytes S W position Connector DB25P Female I F PBA Side Mode Interface Parallel 1 Forward Mode Compatibility Mode 2 Reverse Mode Nibble Byte Mode e Connector Self Powered Transfer BULK USB Speed 12 Mbps Full Speed s Power Self Powered Printer Printing Method 9pins Impact Serial Dot Printing Speed 4 6 Line Sec Type Guillotine ANO Suter Cutting Method 1 Point Partial Cutting Power Consumption Approx 24W e Input AC 100V 240V 2 60 2 Output DC 24 5 1 5A Environment Temperature 0 C 40 C Condition Humidity 30 80 RH Weight 3 2 Kg Type 3 5 Kg 3 6 Kg D Type Packing 2 2 A 2 5 2 6 Kg D Type Unpacking Dimensions mm Type 160 X 249 X 130 C Type 160 X 249 X 149 D Type 160 X 249 X 160 Reliability Head 300 million dots Printer 18 million lines MCBF Auto Cutter 1 million cuts 3 3 Printer Mecha Specifications 3 3 1 Printer Mecha Specification Item Description Remark Model
13. 14 8 8 1 Sub assemblies 8 8 1 1 Carriage Head Assy SRP 270 Name of Parts Method and Procedure Drawings DBERIN FE 2 CARRIAGE HEAD 1 At first set the COBERIN G FE to be inserted into the shaft of JIG Notice The direction of insert is to locate frange downward 2 And then set a QCARRIAGE HEAD to be inserted into the shaft of JIG 3 Next set other COBERIN G FE to be inserted into the shaft of JIG Notice The direction of insert is to locate frange upward 4 Lastly insert two COBERIN G FE in the CARRIAGE HEAD by pushing the handler of Lever Press lt Check Point Check improper insertion of COBERIN G FE and fraction of Q CARRIAGE HEAD 8 8 1 2 Lever Ribbon Feed Assy Name of Parts Method and Procedure Drawings DSHAFT REDUCTION 57 LEVER RIBON FEED GEAR REDUCTION 157 WAVE WASHER E RING 02 5 1 At first Grease DSHAFT on the 2 LEVER RIBBON FEED with HG 318 2 And then Assemble WAVE WASHER and Grease WAVE WASHER 3 Last assemble GEAR REDUCTION SE RING 02 5 8 8 1 3 Ribbon Feeder Assy Name of Parts Method and Procedure Drawings SPRING RIBBON FEEDER RIBBON FEEDER GEAR RIBBON FEEDER 1 Grease SPRING RIBBON FEEDER with HG 31S and insert that into CORIBBON FEEDER 2 And then insert GEAR RIBBON FEEDER to fit the section of hook Rev 3 0
14. 6 Use only an anti static solder removal device Many solder removal devices are not rated as anti static these can accumulate sufficient electrical charge to damage ESDs 7 Do not remove a replacement ESD from its protective package until you are ready to install it Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam aluminum foil or other conductive materials 8 Immediately before removing the protective material from the leads of a replacement ESD touch the protective material to the device will be installed 9 Minimize body motions when handling unpacked replacement ESDs Motions such as brushing clothes together or lifting a foot from a carpeted floor can generate enough static electricity to damaged an ESD Rev 3 02 8 SRP 270 2 Installation and Operation 2 1 Installation 2 1 1 AC Adapter Installation 2 1 2 Interface Cable Installation Power Connector Interface Connector 1 Mack sure the printer is turned off with the Off side of the switch is pressed down 2 Check the label on the AC Adapter to make sure the voltage required by the AC Adapter matches that of the electrical outlet 3 Plug the DC cord connector into the power jack on the printer 4 Plug the AC Adapter power cord into the wall outlet 2 1 3 Cash Drawer Cable Installation 1 Turn off the printer host ECR and Computer 2 Plug RS 232 RS 485 USB or
15. 8 1 1 Printing specifications Item Description Printing method serial impart dot matrix 0 352 mm 0 014 0 3 0 01 Head wire configuration 9 pin serial type wire diameter 0 317 mm 0 012 Dot pitch 0 352mm 1 72 Dot wire diameter 0 3mm 0 01 Printing direction Bidirectional with logic seeking Printing width 63 5mm 2 5 Line feed 4 233mm 1 6 default setting Paper feed method Friction feed Paper feed speed Approximately 6 2 inches second during continuous paper feeding Characters per line See the table on the next page Characters per inch See the table on the next page Total dot count 7 9 font 400 half dot positions per line horizontal direction 9x9 font 400 half dot positions per line Print speed Approximately 4 6 lines second 40 columns 16cpi Approximately 8 4 lines second 16 columns 16cpi NOTE If the print duty ratio is too high the operation of the print head is stopped by the duty limit In such circumstances the print speeds shown above cannot be guaranteed cpi characters per inch Rev 3 02 48 8 1 2 Character specifications 8 1 2 1 Character sets SRP 270 Item Description Alphanumeric 95 International 32 Graphics 128x7 pages 8 1 2 2 Character structure 7x9 with 400 half dot positions per line 9x9 with 400 half dot positions per line 0 352 mm 0 014 01 65161 O
16. Table 3 17 RS 485 Pin Description Xx Note BUSY condition and other information refer to the User s Manual Note This format is used when the UART for RS 232C is connected to the RS 485 driver 3 5 2 e H W Flow Control When DR1 2 CR1 2 flow control is select before transmitting a data the Printer checks whether the host is BUSY or not If the host is BUSY the Printer does not transmit a data to the host If the host is not BUSY the Printer transmits a data to the Host The host is the same Refer to the Interface Part of Chapter 4 3 Special Circuit Diagrams 3 5 2 f S W Flow Control When XON XOFF flow control is selected the printer transmits XON ACSII 11h or XOFF ASCII 13h signal through the TXD line If the Printer is BUSY the Printer transmits XOFF ASCII 13h to host through the TXD line Then the host recognize that the Printer is BUSY So the host does not transmit a data to the Printer If the Printer is released from BUSY the Printer transmits XON ASCII 11h to host through the TXD line Then the host recognize that the Printer is not BUSY And the host transmit a data to the Printer XX Note Refer to the Operation Manual about XON XOFF flow control 3 5 3 IEEE1284 Parallel Interface Bidirectional parallel interface in accordance with the IEEE1284 Nibble Byte mode 3 5 3 a Forward Mode Specification Compatibility mode Data transmission from host computer to printer Centronics compatiable
17. an erue pee iet 66 8 4 4 Adhesive Application 66 9 4 5 Adhesive types nete e rie eae l dai eee eee eee 66 8 4 6 Adhesive Application ic cene ir eet 66 8 5 Tools Lubricants and 67 9 5 1 Listot T OOISS et ttt eq ne e t ER ade nl a dedere 67 8 5 2 List of Lubricants and Adhesives ss 67 9 6 ARE Pall eet tme odis A TE LQ 67 8 6 1 Repair Levels eie dava d Head aided k 67 8 6 2 Repair cti ERO Ie Perd n eere atas c M deste teeta 67 8 6 3 Repair e eee le Perd e eee dre ale Pendet eet taste 68 8 6 4 Assignment Connector 73 9 7 DISASSEMIDIY eic teen os dta oso du egt ie dede etd 74 9 8 Assembly icit A TA van dott de DU e ee dere Dat tdt 74 8 8 1 Sub asseimblles eer e fero da o Mad Feed Hane dert e ideal 75 8 0 2 Main assetmblles 2 de Eee eder d E eben OR epee L Ek 78 8 8 Adjustment iii ii is Later eo pere Perte rer eU erede t e ieee 85 Rev 3 02 e SRP 270 m About About this Manual This Service Manual describes how to perform hardware service maintenance for the BIXOLON SRP 270 Receipt Printer Notes Not
18. liebsa Le reri ds 11 2 2 2 Setting the DIP switch RS 232C Serial 11 2 2 3 Setting the DIP switch IEEE1284 Parallel USB 12 2 2 4 Hexadecimal Dumping Festes tele eren LI ce be i een 13 VAPESMIXIZNEK CIN 13 Product SpecifiCations eene teer Earn eta a ante RUM EE MR 16 1 eadera incinta c Eee or iaa 16 3 121 Printer Dimensions TTL oio cd d eR DRE P ved Ded uere ate 16 3 1 2 AC Adapter Dimensions 16 3 123 Feature Locations mtra t dera tin Die rina tede egit eodd 17 3 2 General Heute ton ecd aate a aa tit 18 3 3 Printer Mecha Specifications 18 3 3 1 Printer Mecha Specificatl n ient eerte thee ic eder aa b ba edge ea Repo 18 3 9 2 Gharacter Specification en est de pete oe Doo ted e tt atte 19 3 3 3 Printer SMP 710 SMP 710N Pin Description 19 3 3 4 Printer Head Specification 20 3 3 5 Printer Head Thermistor Specification 7 20 3 3 6 Feed amp Carriage Motor 20 323 7 Auto cutter spe ificationi tix ena tard eder tr D ea ed E err yet ta 20 3235 8 Paper Specification ardeta a ro rm e n a er d
19. then repair the damaged area Note that the tables of subsection 8 6 3 Repair Guidelines consist of the 5 items listed below enabling troubleshooting and repair to be performed with speed and efficiency with minimum error 1 Phenomenon Check the symptoms of the trouble 2 Condition Compare the trouble status of problem with the description of this column and locate the matching status 3 Cause This column lists the potential causes on the basis of the trouble status allowing the location of the trouble to be checked It also lists the repair level for each cause so be sure to refer to this column before attempting repair 4 Check point and Method In correspondence to the cause this column lists what parts to check as well as the checking procedure to be used Be sure to inspect the check points according to the method described here 5 Repair Method Repair the trouble area according to the description in this column If the identical phenomenon and condition remain unchanged after performing the repair check another item of the CAUSE column then perform the pertinent repair Rev 3 02 67 8 6 3 Repair Guidelines SRP 270 Phenomenon Condition Cause Level Check point amp Method Repair Method 1 Motor Motor does not DDefective B Check the input Inspect and repair does not rotate despite power input to power the power rotate printing motor Check the
20. 1 Daily check The printer and printer operation are checked to see if the printer is being operated in the proper manner and always being maintained in optimum condition If any unsatisfactory points are discovered They should be replaced 1 Check that the Ribbon Cassette is securely installed in the ribbon unit 2 Check that the Ribbon Cassette in use conforms to the Specifications ERC 38 or compatible 3 Check the ribbon for bending twisting or damage Replace the Ribbon Cassette if it is affecting print quality 4 Check that the paper in use conforms to that described in the Specifications 8 3 2 2 Periodic check After every 6 months the printer parts should be checked for wear cleanliness deformation remaining lubrication installation status etc If any unsatisfactory points are discovered they should be replaced 1 Check the printer interior for adhesion of paper dust or scraps Dust and other foreign particles cleaning out any adhered particles with a vacuum cleaner paying special attention to dirt in the vicinity of the detectors 2 Check all the springs for deformation replacing any deformed springs 3 Check the gap between Head unit and Platen Assy If there is a malfunction perform repair according to section Disassembly amp Assembly 4 Check the lubricant and adhesive status of all applications points applying lubricant or adhesive as required according to section 8 4 Lubricants and Adhesive Appl
21. Code 13h Logic 1 SD1 SD2 gt 0 2V RD1 RD2 gt 0 2V VA Logic 0 SD1 SD2 lt 0 2V RD1 RD2 lt 0 2V Baud Rate 19200 2400 4800 9600 Bps Data Word Length 7 Bit 8 Bit Parity None Even Odd Connector DB25P Female I F PBA Table 3 16 RS 485 Specification XX Note The HandShaking Flow Control Data Word Length Baud Rate Parity functions depend on the DIP Switch settings Refer to the User s Manual 3 5 2 b RS 232C I F Cable Same as the appearance of RS 232C Cable 3 5 2 c Cable Connection PRINTER 485 232 SIDE CONVERTER 20 DTR Figure 3 8 RS 485 Cable Connection Rev 3 02 24 SRP 270 3 5 2 d Signal Description 1 FrameGND __ Frame Ground Send Data 3 SD1 gt SD2 L SD1 lt 502 Receive Data H RD1 gt RD2 RD1 RD2 gt 0 2V Input Signal Ground When DTR DSR is selected this signal indicates whether the printer is BUSY or READY H W flow control 1 DR1 DR2 H The printer is BUSY 2 DR1 DR2 H The printer is READY 3 The host computer transmits a data to the host after confirming this signal When DTR DSR is selected this signal indicates whether the host computer is BUSY or READY H W flow control 1 CS1 gt CS2 The host computer is BUSY 2 CS1 lt CS2 The host computer is READY 3 The printer transmits a data to the host after confirming this signal
22. ROLLER HOLE ROLLER 2EA SPRING HOLD ROLLER 2EA 1 Set OSUB PCB ASSY to fit the hole in the bottom face of BASE PAPER FEED and tighten two SCREW TAPPING 2 Set the MANUAL CUTTER to the boss on the BASE PAPER FEED and tighten two SCREW 3 Hook PLATEN PAPER GUIDE on the manual cutter in the front face of BASE PAPER FEED 4 Grease section of 0SHAFT HOLE ROLLER mounted HOLE ROLLER and insert two OHOLE ROLLER Next set SHAFT to the each groove of BASE PAPER FEED as fitting HOLD ROLLER into PPG 5 Hook two 8 SPRING HOLD ROLLER on the both side of BASE PAPER FEED Check Point Check the location of PLATEN PAPER GUIDE status of hooking coming off Rev 3 02 80 8 8 2 4 Main assembling 1 SRP 270 Name of Parts Method and Procedure FRAME MAIN C K ASSY 4 SERIAL NO TAG TAPE INSULATION LEVER COLOR CHANGE SOLENOID ASSY SPRING SOLENOID SCREW MACHINE M2 3 8GEAR PULLEY ASSY WASHER 2 6 5 0 5 LEVER TENTION BELT ASSY a SCREW M3 4 1 Set COFRAME MAIN C K ASSY 4 on the JIG 2 Paste SERIAL NO TAG in the right side and TAPE INSULATION on the bending line in the bottom face 3 Grease SHAFT 6 point with HG 31S 4 Insert LEVER COLOR CHANGE into SHAFT in the left bottom side and fit WASHER 2 6 8 0 5 5 Turn SOLENOID ASSY and OSPRING SOLENOID downward and insert it into the hole of LEVER C C and M F side step by step Next tighten COSCREW MAC
23. circuit board Assy the head FPC lead section if there is no and connector Check the voltage conductivity or 28V is broken 28V 2V Defective B Observe by Replace the timing timing detector oscilloscope detector sub Assy sub Assy to check if a timing if no timing signal is signal is being being generated generated Rev 3 02 68 SRP 270 Phenomenon Condition Cause Level Check point amp Method Repair Method 2 No dot Motor rotates Defective B Observe by If input pulse is printing normally but no input charge oscilloscope not generated or is performed dot printing is pulse to check if the input if such pulse is performed charge pulse is within outside rated values rated values repair the driving Pulse rating control circuit For voltage and pulse width refer to the specifications for SMP 710 710N Positional B Check if the gap If incorrect perform relations hip between the Platen repair according between and the tip of to Adjustment head and head is correct the platen correct value 0 51x0 1mm 3 Missing Only specific Damaged B Check the conductivity If there is no of Head dots dots are never lead in head between the pertinent conductivity printed FPC common lead of the replace the head head FPC and other terminal Lead B Check the conductivity Replace the main breakage between the pertinent circuit board Assy if betwee
24. input supply circuit command voltage 24V 2V has been given between the motor terminals of the connector using a tester or oscilloscope Defective B Check input signal Replace the motor drive Check if the signal drive signal signal is being input generating to the motor drive circuit terminal of the connector using an oscilloscope Damaged B Check the conductivity Replace the main or Improper between the circuit board Assy connection pertinent terminals if there is no between conductivity motor terminals If improperly of the connected connector reconnect the pertinent leads in the proper manner Defective B Apply 24V to the Replace the motor leads of the motor if it motor then check does not rotate the rotation red black Occurrence A Check the deformation Replace Head of paper jam of Head pin guide or pin guide or platen platen paper guide paper guide if they are deformed or destroyed 2 No dot Motor rotates MHead FPC B Check if the head FPC If not securely printing normally but no is disconnected is properly inserted reinsert the head is performed dot printing is from it into its connector FPC performed connection Broken B Check the conductivity Replace the common between the common head unit if lead in head lead of head FPC and there is no FPC other terminals conductivity 20041014 Common A Check the conductivity Replace the main lead between of the common
25. position of second printing from left to right d Solenoid on time unlocking color change printing 24ms When head carriage tip covers the home sensor after printing from right to left Electrical Circuit Operation Principles Hardware Configuration Component connection diagram The electrical circuitry of the printer consists of the main circuit board and the interface circuit boards The figure below is a component connection diagram of the electrical circuitry Paper end 1 CON3 j sensor Printhead j4 CON14 Main Circuit Board CON30 USER SET Solenoid CON2 t Carriage motor Circuit board block diagram The figure below illustrates the circuit block diagram for the printer CON14 l Print head Paper end sensor CON1 p m0 Solenoid 1 CON30 USER SET Motor Motor Paper feed motor CON1 4 4 drive drive _ r Carriage motor circuit circuit Rev 3 02 60 SRP 270 8 2 Handling the Printer 8 2 1 Precautions on Printer Handling 8 2 1 1 Precautions on transport 1 When trans porting this printer It s proper handling method is to support both side of Frame main
26. screws securing the Printer Assy Assy you should remove Separate the Printer Assy from the Case Lower Plate Bottom see Chapter 4 2 Cover Assy see Chapter 4 3 amp 4 4 Case Upper Assy see Chapter 4 6 Rev 3 02 42 SRP 270 5 8 Printer Assy SRP 270D Type 1 Before you disassembly the Printer Assy you 3 Remove two screws securing the Printer Assy should remove Separate the Printer Assy from the Case Lower Plate Bottom see Chapter 4 2 Cover Assy see Chapter 4 3 amp 4 4 Case Upper Assy see Chapter 4 6 2 Remove the Spool Gear and Belt as shown below SRP 270D Type 5 9 Auto Cutter Assy 1 Before you disassembly the Auto Cutter Assy you 2 Remove two screws securing the Auto Cutter should remove Assy Separate the Auto Cutter Assy from the Plate Bottom see Chapter 4 2 Printer Assy as shown below Cover Assy see Chapter 4 3 amp 4 4 Case Upper Assy see Chapter 4 6 Printer Assy see Chapter 4 7 amp 4 8 3 Before you reassembly the Auto Cutter Assy you should set up the Belt and Hinge Rev 3 02 43 SRP 270 5 10 Main PCB 1 Before you disassembly the Main PCB 2 Remove four screws securing the Main PCB you should remove Separate the Main PCB from the Main Frame Plate Bottom see Chapter 4 2 Cover Assy see Chapter 4 3 amp 4 4 Case Upper Assy see Chapter 4 6 Printer Assy see Chapter 4 7 amp 4 8
27. 2 75 8 8 1 4 Lever Tension Belt C Assy SRP 270 Name of Parts Method and Procedure Drawings SHAFT PULLEY LEVER TENSION 2 6 5 0 0 5 1 At first grease SHAFT PULLEY with HG 31S 2 Next insert SPULLEY and then assemble OWASHER 2 6 5 0 0 5 Check Point Check 3 PULLEY to rotate smoothly 8 8 1 5 Sub PCB Assy Name of Parts Method and Procedure SUB PCB SWITCH LEVER WIRE ASSY 1 Insert OSWITCH LEVER to fit the hole of SUB PCB 2 And then solder the land on the SUB PCB bottom side and attach the WIRE ASSY on the land A G lt Check Point gt After soldering check the frozen lead and short 8 8 1 6 Cover Head Assy Name of Parts Method and Procedure Drawings HEAD SCREW MANUAL E RING 82 5 CAUTION LABEL 1 Insert the SCREW MANUAL into the right side hole of COVER HEAD 2 And then assemble SE RING onto the starting point of a spiral during adhering closely to the COVER HEAD 3 Paste the CAUTION LABEL the right bottom side Rev 3 02 76 8 8 1 7 Bracket PF Assy SRP 270 Name of Parts Method and Procedure Drawings BRACKET P F PF IDLE GEAR KNOB GEAR KNOB IDLE SWASHER 1 6 3 0 3 8 8 1 8 Platen Assy 1 At first grease the small shaft of BRACKET P F with EM 501 Next ins
28. 2 BARCDEF GHI JKLMNOPERST 01234564789 52 2 BABCBEF GHI JRL HNOPRRSTU 0123456789 11 2 2 EARCDEFGHTJKLHNOPQRSTUU 0123456707 x TRASCDEFDHI JKLHNOPRESTUVI X Character Test Completed SRP 270 3 Product Specifications 3 1 Appearance 3 1 1 Printer Dimensions mm m 270A Type SS Ww A 130 270C we gt 270D Type b MAR gt Figure 3 1 Printer Dimension 3 1 2 AC Adapter Dimensions mm Figure 3 2 Adapter Dimension Rev 3 02 16 SRP 270 3 1 3 Feature Locations RS 232 Ver2 4 RS 232C RS 485 PARALLEL USB 1 Cover A C D 2 Case Upper A C D 3 Case Lower A C D 4 Label Control 5 Power Switch 6 Bracket DIP Switch 9a RS 232C RS 485 Serial I F Connector 9b IEEE 1284 Parallel I F Connector 9c USB USB I F Connector 10 Drawer Kick Out Connector 11 DC Power Jack Figure 3 3 Feature Location Rev 3 02 17 3 2 General Specifications SRP 270 Item Description Remark e SRP 270 RS 232 Serial Communication Product e SRP 270S RS 485 Serial Communication e SRP 270P IEEE1284 Parallel Communication e SRP 270U USB Communication e MITSUBISHI M16C 62 Group M30622 SFP 16 Bit Internal RAM Size Byte External ROM Version M EPROM 1Mbits M27C010
29. 8mm 0 937 63 5mm 2 5 Maximum of 200 dots 400 positions 5 9mm 0 23 6 76mm 0 27 76mm 2 99 4 1 This dimension shows the distance from the manual cutter to the print position 2 Values for the printing area are calculated between dot centers with the wire diameter 0 29mm 011 Rev 3 02 50 SRP 270 8 1 4 Ribbon Cassette specifications Compatible Model Color Ribbon life 1 ERC 38 B Black 3 million characters with continuous printing at 25 C 77 F ERC 38 B R Black and Red Black 1 5million characters with continuous printing at 25 C 77 F Red 750 000 characters with continuous printing at 25 C 77 F 1 Ribbon life is based on the following conditions Character font 7x9 font with descenders Print pattern ASCII 96 character rolling pattern See the specification published by SMP 710 710N for the print pattern example XX NOTE Malfunctions and other problems may occur if a ribbon cassette other than the specified one is used 8 1 5 Environmental specifications Item Description Operating 0 40 C 32 to 104 F At 34 C 93 F or higher there are humidity restrictions Temperature 6 See the figure below Storage 5 to 50 23 122 F except paper and ribbon Operating 30 to 80 RH non condensing Storage 10 to 90 RH non condensing except paper and ribbon 90 34
30. 9 5 sz BARCDEF GHI JKLHN PORST 0123456189 142 PBABLIJEF GHIJKLMNOPORSTU 101234557891 CS 2 BARCTIIEFGHITKLHNOPRRSTUU 0123456789 5422 8ARCDEF BHI TKLANOPORSTUVY 3X Character Test Completed 2 02 15 SRP 270 B Parallel Self Test Sheet BACKLASH G 1 6 GFF TURN TM 8 Ms T l AUAM Tm ams fri Tim 11 BACKLABH 8 3 DIPSU 1 5 0N 1 8108 1 RU ADJUSTER VERTICAL ALIGNMENT CHECK SHEET HHHHHHHHHHHHBHHHHHHHHHHHHHHHHHHRHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHBHHHEHBHHHHHHHHH HHHHHEHEHHHHRHHHHBHHHHHRHHHHHRHRHHRHHHHH HHHHHHHEHHHHHHHHHBHHHHHHHHHHHHHHHHRHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHRHHHH V MEZR Jkt a 70123450789 1 PBABCIEFGH RSHA K 0123456789 CP TRABCDEFGHT ASIR ye 01234567891 5 22 7GARCDEFGHIT FLAT 0122455789 1 3 lt gt 2BABCDEFGHITE TR Et 0123456789 tC BABCTIEF GHIJEL R At m 0123455739 CES 2 BABCDEFGHTIKLR C ye 7701234567891 3 CO 2BABCTEFGH ETKL HN 0123456707 x GAB DEFDBHIJKLRNG X 0123455789 ces 7BARCIEF GHI IKLMNOF X 0123458789 1 gt BABCIIEF GHTIKLMROPU 0123456782 1522 2 BABCTIEFGHT2 KLHNOPFGR 170123458789 C2 JKL NOPARS 0123455789 se 2BARCUEFGHI JKCHNOPGRST 0123456787 22 2GABCDEF GHTJKLMNOPHRSTU 101234567871 2 TEAECIEFGHITJRLBNGPURSTUV 0123456789 5 7BABCDEFGHIJKLANOPORSTUVE 0123456789 34
31. AIN on the JIG 2 Insert DAD LEVER in the left side and then turn to the downward Next insert the other OAD LEVER into SHAFT HEAD GUIDE and insert the Sub Assy into F M from right to left and then turn AD LEVER downward 3 Insert SHAFT HEAD CARRIAGE from left to right and fit E RING in the left side 4 Insert FPC into amp HEAD PRINT and set HEAD Assy to CARRIAGE HEAD and then tighten two SCREW 5 Tighten the screw mounted to LEVER TENTION BELT ASSY completely Fit COBRACKET HEAD COVER L and 5BRACKET HEAD COVER R to both boss and then tighten two SCREW MACHINE 8 8 2 7 Main assembling 4 Name of Parts Method and Procedure BASE PAPER FEED ASSY SCREW MACHINE M3 6 3EA STEP MOTOR H F SCREW M3 4 2EA RIBBON FRAME SPRING RIBBON FRAME E RING 93 3EA 8HEAD COVER ASSY 1 Set FRAME MAIN on the JIG Put DBASE PAPER FEED ASSY wire into the rectangular hole and drag it Next set OBASE PAPER FEED ASSY and tighten three SCREW MACHINE 3 Turn up FRAME MAIN and then set STEP MOTOR H F to the hole Next tighten two SCREW 4 Insert SUB PCB STEP MOTOR P F STEP MOTOR H F WIRE to the connecters of MAIN PCB ASSY sequentially and then alignment and fix the WIRE ASSY by pressing the hooks 5 Grease on the CARRIAGE HEAD SHAFT RIBBON FRAME and SHAFT HEAD CARRIAGE with HG 318 6 Hook SPRING RIBBON FRAME on the RIBBON FRAME and insert the other side on the left side of S
32. BIXOLON SAMSUNG mini printers Service Manual SRP 270 Impact Printer Rev 3 02 http www samsungminiprinters com SRP 270 Table of Contents N Precaution Segment i sis 6 5 ade e eel cede 6 1 2 Servicing neta a pee thier tcm e ees 7 1 3 Precaution for Electrostatically Sensitive Devices 8 Installation and Operation iii 0ccecccdssesneecneceedeaesedenconecesexengaisectancedcacaeainacconnedeedeansedaceanednedenaieccedatesnsetaniseses 9 2 1 Installation ee teet 9 2 121 AC Adapter liistallation 2 bet eret cce Ute ie Rope eget iesu abused 9 2 1 2 Interface Cable Installatiori 5 titt toe baka Le REL ERN abe dt ant ttes abusu 9 2 1 3 Drawer Cable Installation iti ct tete send eet bd teta eb una tee bal 9 2 1 4 Ribbon Cartridge INStallatiOn uiri oh ror PO FL d D PEE edie 9 221 5 Paper Roll IMStallation i tactic teet tabu tebe rab etat ue nad ve 10 2 2 11 2 2 1 Setting the DIP SwitChes s tuit teet
33. HAFT Next insert RIBBON FRAME onto right side of SHAFT and insert the other side of RIBBON FRAME onto SHAFT Lastly hook the spring For more detail refer next page 7 Tighten three COE RING And assemble 5HEAD COVER ASSY Check Point Check the setting position of RIBBON FRAME and jam N Rev 3 02 83 SRP 270 8 8 2 8 Main assembling 5 Name of Parts Method and Procedure RIBBON FRAME 1 Insert SPRING RIBBON FRAME into the hole in left side of SPRING RIBBON FRAME RIBBON FRAME to ward arrow on shows in Fig 1 detail S E RING 03 2 Set SPRING RIBBON FRAME onto the SHAFT and then move the RIBBON FRAME toward arrow 3 Next insert RIBBON FRAME onto SHAFT toward arrow an shows in Fig 3 4 And then insert the other hole A of RIBBON FRAME onto OSHAFT and then adjust the position of RIBBON FRAME to the center as shows in Fig 4 Firs t E RING to OSHAFT and two E RING to SHAFT 6 Check RIBBON FRAME to move smoothly as operating it up and down Rev 3 02 84 SRP 270 8 8 3 Adjustment When assembling this printer be sure to refer to the required adjustment procedure To ensure normal operation of the printer after disassembly or replacement of a Component for maintenance or repair Be sure to perform along to the required method Adjustment of Head gap Description Points in Adjustment 1 Rotate Gear Ist Reduc
34. HINE 6 Insert 8 GEAR PULLEY ASSY and then fit WASHER 7 Insert G OLEVER TENTION BELT ASSY to the hole and then tighten SCREW two third Rev 3 02 81 8 8 2 5 Main assembling 2 SRP 270 Name of Parts Method and Procedure GEAR REDUCTION A GEAR REDUCTION B RIBBON FEEDER ASSY GEAR REDUCTION SLEVER RIBBON FEED ASSY WASHER 2 6 5 0 5 2EA MAIN PCB ASSY 8FPC CONNECTOR SCREW MACHINE M3 4 CARRIAGE HEAD ASSY SYNCHRONUOS d2SPRING LEVER TENSION BELT 1 Set FRAME MAIN on the JIG 2 Set GEAR REDUCTION A GEAR REDUCTION B RIBBON FEEDER ASSY and GEAR REDUCTION onto SHAFT sequentially Grease teeth and upper face of RIBBON FEED ASSY 3 Insert LEVER RIBBON FEED ASSY and EWASHER 4 Attach 68FPC CONNECTOR to OMAIN PCB ASSY Next plug SOLENOID WIRE block in connecter 2p And then set it to M F and tighten two SSCREW MACHINE 5 Insert BELT SYNCHRONUOS into CARRIAGE HEAD ASSY and then belt up round PULLEY and GEAR PULLEY 6 Hoot 2SPRING LEVER TENSION BELT Check Point Check the tear of FPC Rev 3 02 82 8 8 2 6 Main assembling 3 SRP 270 Name of Parts Method and Procedure LEVER SHAFT HEAD GUIDE SHAFT HEAD CARRIAGE E RING 3 amp HEAD PRINT SCREW M3 10 2 BRACKET HEAD COVER 4 BRACKET HEAD COVER R SCREW MACHINE M2 6 3 2EA 1 Set FRAME M
35. OLTAGE DESCRIPTION 1 24VDC Cash Drawer Solenoid Driving Step Motor Voltage 5VDC Logic IC Driving Voltage Sensor 1 Drawer Driving and Feed Auto Cutter Motor Voltage 24Vdc 24VDC is supplied from SMPS This Voltage is smoothed by capacitors C1 6 39 This voltage is used as a Printer Head Printer Motor Cash Drawer Solenoid Driving voltage and a source voltage of the 5V voltage sources 2 Logic IC Driving Voltage 5V 5Vdc Logic driving voltage is produced by the step down dc dc converter U1 34063A That is U1 produces rectangular wave This makes D2 EK04 and L6 store energy The voltage is smoothed by C8 470uF and then 5Vdc Logic voltage is produced Rev 3 02 31 4 3 2 RESET Circuit SRP 270 Reset signal is a signal in order to start up CPU under Power on Reset circuit uses a reset ICTL7705ACD 05 When 5Vdc is fallen under 4 by Power off reset signal prohibits the system from misoperating by lowering down to OV RESET CHIP ASM811 JEUSF T RESET OUT Rev 3 02 RESET Figure 4 4 Reset Block Diagram Power On Power Off Figure 4 5 Reset Waveform 32 SRP 270 4 3 3 Cash Drawer Circuits The circuit is used for opening cash drawer and driven by the Q8 STA471 When its state is high level signal Q8 STA471 drive the solenoid to open the cash drawer As an optional item we provide sensor switch we call it a compulsory switch which checks the drawer whether
36. Parallel Cable connector into the I F connector on the printer 3 Tighten the screws on both sides of the connector 4 Turn on the printer host ECR and Computer 2 1 4 Ribbon Cartridge Installation Cash Drawer Connector Cash Drawer Cable 1 Turn the printer off 2 Plug the Cash Drawer cable connector into the connector on the printer To remove the Cash Drawer cable press the clip on the connector grasp the connector and pull it out 3 Secure the Shield Wire on the bottom of the printer Rev 3 02 1 Before inserting the ribbon cartridge turn the Knob 2 Insert the ribbon cartridge Pay particular attention to the placement of the ribbon behind the Print Head 3 After inserting the ribbon cartridge turn the knob clockwise again to make sure the ribbon moves freely in the cartridge 2 1 5 Paper Roll Installation 0 82 1 Using new roll paper unroll the paper and cut the end as shown 2 In case of Model 270C D open Auto Cutter on the power ON 3 Auto feeding one paper 4 Put first paper into Auto Cutter set second paper rolling Spool Winding to Lower Case 5 Setting Auto Cutter then put first paper to the middle of guide for cover Printer and pull it out close cover Rev 3 02 10 SRP 270 6 If the paper is loose wind the Rewind Spindle to tighten the paper Spool Paper Windin g Incorrect Sp
37. R FEED and fit two OE RING into the groove each other 5 Set MGEAR ROLLER onto right side shaft of BASE PAPER FEED and then set BRACKET PF R ASSY 6 Insert STEP MOTOR PF into the rectangular hole of BRACKET PF and drag backward Next tighten two SCREW TAPPING on BRACKET PF R ASSY Check Point Check ROLLER to rotate smoothly Rev 3 02 78 8 8 2 2 Base Paper Feed Assy 2 SRP 270 Name of Parts Method and Procedure GEAR TAPE UP GEAR TU PULLEY WASHER BELT GUIDE WASHER 2 6 5 0 5 BRACKET PF L SCREW TAPPING M3 6 6EA GUIDE PAPER A amp GUIDE PAPER 1 Make BASE PAPER FEED stand left side and then insert WGEAR TAPE UP to fit SHFAT D CUT long side is downward Next grease SHFAT and teeth of GEAR with HG 318 2 Set GEAR TU PULLEY onto SHAFT and insert WASHER BELT GUIDE Next fix with WASHER 3 Set BRACKET PF L onto BASE PAPER FEED boss and then tighten two SCREW TAPPING 4 Rotate BASE PAPER FEED and set GUIDE PAPER A to the back face and then tighten two SCREW TAPPING step by step 5 Make BASE PAPER FEED stand and set 65GUIDE PAPER B to it and then tighten two OSCREW TAPPING step by step Rev 3 02 79 8 8 2 3 Base Paper Feed Assy 3 SRP 270 Name of Parts Method and Procedure SUB PCB ASSY SCREW TAPPING M2 3 2EA MANUAL CUTTER SCREW 3 2EA SPLATEN PAPER GUIDE SHAFT HOLE
38. RP i a aa a G 33 4 3 4 I F PBA Detect Block 34 4 3 5 RS 232C Communication Block 35 4 3 6 RS 485 Communication Block 36 4 3 7 Parallel Communication Block 37 4 3 8 USB Communication Block 37 4 3 9 DIP Switch i e a SAT i edes e 38 5 Disassembly and Assembly 39 5 1 General Precautions on 39 5 2 Plate Bottom ee ta Ma eet dee eaa ers dees HR ero 39 5 3 Cover Assy SRP 270D Type 3 eot et fep n ee e eater ties 40 5 4 Cover Assy SRP 270A 8 SRP 270C Type eene memet nennen nens 40 5 5 Case Upper Assy SRP 270A amp SRP 270C Type eene emere 41 5 6 Case Upper Assy SRP 270D 42 5 7 Printer Assy SRP 270A amp SRP 270C 42 5 8 Printer Assy SRP 270D Typis iita tete dite pacta Rad a dpt cre aste 43 5 OQ Auto G tter ASS Wie bestie ie ip dan Poe Sen padded esee ated tace nae tace odes ute Ed en US 43 rette rendent I DI mini 44 Interface Board AsSy ideae meae ten Peta a a ab B 44 6 Alignment and
39. Universal Serial Bus The transfer type of the printer is the BULK Data 7 0 RD WR CS3 AO USBN9602 Controller CPU INTERRUPT M30622SFP CLOCK 48 MHz USB 1 F BOARD Figure 4 11 USB2 0 Communication Block Diagram Rev 3 02 37 SRP 270 4 3 9 DIP Switch Circuit The key Board Circuit consist of the scan signal of 4 lines and the return signal of 4 line The CPU sends repeatedly and continuously the scan data R1 2 3 5 through P10 0 10 2 P1 1 The DIP S W information input in the return signal if the specific DIP S W is ON Status during the given time The CPU reads the data through C1 C4 and analyzes what DIP S W is ON and performs the selected function M30622SFP C4 C3C2C1 DIODE MMBD6050L O_O R1 OUT R1 checks No 1 4 of DIP S W 1 R2 OUT R2 checks No 5 8 of DIP S W 1 R3 OUT R3 checks No 1 4 of DIP S W 2 R5 OUT checks No 5 8 of DIP S W 2 C1 IN q DIP S W1 No 1 is ON C2 IN C3 IN CA IN Figure 4 12 DIP Switch Block Diagram Rev 3 02 38 SRP 270 5 Disassembly and Assembly 5 1 General Precautions on Disassembly This chapter describes the Disassembly and Reassembly procedures for the Printer of SRP 270 Series This Printer contains electronically sensitive device Use caution when handling any component Whenever servicing the machine you must perform as follows 1 Disconne
40. V ER COLOR CHANGE SOLENOID MOVING RIBBON UPWARD tm MOVING RIBBON DOWNWARD HEAD CARRIAGE SHIFT BLACK PRED SOLENOID ON RED PBLACK Rev 3 02 58 SRP 270 Ribbon shifting operation Ribbon shifting action is as follows As the Carriage Motor rotates clockwise Head carriage Assy moves from left to right When you d like to change from red color to black color you should shift Head carriage Assy as shows in figure timing chart Delivers to Gear HF 1 and turns to direction of arrow wit Lead Cam At this moment if not energized in Solenoid Solenoid Lever and Shift cachet are not moved and so Shift Cam does not turn and Ribbon Frame is not in Shift Up Down As Solenoid moves energized Solenoid lever goes down and turns Shift Cam which snatches with moving Shift cachet under stop Shift Cam along Top Bottom makes to Shift Up Down of Ribbon Frame and printing color is printed by Black Red Moving Shifting is up to energization and control of Solenoid 1T 0 1587mm 15 2 0 31 4 D 9 HOME SENSOR Carriage Con PaperFeed Con Carriage in A DE i Carriage in B Paper feed in A E i Paper feed Head out
41. a signal is reset detector sub it stop detector sub generated from of the Assy if no signal is Assy R L reset detector generated sub Assy by rotating the Lead Cam Defective B See cause 2 of phenomenon 1 motor drive signal Check input signal stop 7 high 7 Paper is All Printing is Defective A Check the width Use the standard not feed done at one paper supply length and thickness paper line without the of the paper Repair each supply paper being Check the paper mechanism so that feed feeding path paper supply is smooth Check the end part of paper Detect in B Apply 24V to motor Substitute if motor is step motor and check to turn not in turning 8In proper B Check flow of In case of no flow of connection or electricity between electricity damage of Pertinent terminal substitute Assy for terminal main circular connector in case of no step motor or connection try to cutting of wise connect with or damaged leading connected part In case of cutting wire or damaged substitute step motor Occurrence A See cause 5 of phenomenon 1 of paper jam 5 Wear or B Check the gear for If there is wear damage of the wear or damage damage replace teeth of the the pertinent gear gears Wear of the B Check the surface of If the Rubber Roller Rubber Roller the Rubber Roller for is worn replace it wear Deformation B Check if the Shaft If deformed replace of the spring Roller has beco
42. ake out the Head FPC from the connector of PCB Assy 4 Replace the Head unit and assemble according to the order of sub Aassy 1 5 After assembling adjust the gap as above Adjustment indicates 6 Assemble the Ribbon Frame Rev 3 02 45 SRP 270 7 Troubleshooting 7 1 Power Problem Check the Power Out on SMPS Check the Fuse Check the related Pattern e Check the IC34063 7 2 System Problem Check the Reset part IC amp Pattern Check the Clock on FS741 14 7456MHz Check the Adr Data line Pattern 7 3 Printer Problem Check the Feed Motor Signal on CPU Check the Feed Motor Block on PCB STA471 Step Motor Connection Check the Carriage Motor Signal on CPU Check the Carriage Motor Block on PCB STA471 Step Motor Connection Check the Ribbon Select Signal on 74HCT574 U22 Check the Ribbon Block on PCB STA471 Connection e Check the Auto Cutter Signal on 74HCT574 022 Check the Auto Cutter Block on PCB TA8428K Connection Check the Near End Home Sensing Signal on Main PBA Check the Sensing Block Sensor Harness Check the Head Trigger Signal Head Signal on CPU Check Dot Printing Block on Main PBA STA471 74HCTOS Connection 7 4 Cash Drawer Problem Check the Drawer Connector amp Harness Check the Drawer Signals on 74HCT574 Check the Drawer Block on Main PBA STA471 Connection 7 5 DIP S W Problem Check the Output Signal DIP R1 4
43. cal design of the Receipt Printer Unauthorized alterations might create a safety hazard Also any design changes or additions will void the manufacture s warranty 6 Components parts and wiring that appear to have overhead or that are otherwise damaged should be replaced with parts that meet the original specifications Always determine the cause of damaged or overheating and correct any potential hazards 7 Observe the original lead dress especially near the following areas sharp edges and especially the AC and high voltage supplies Always inspect for pinched out of place or frayed wiring Do not change the spacing between components and the printed circuit board Check the AC power cord for damage Make sure that leads and components do not touch thermally hot parts Product Safety Notice Some electrical and mechanical parts have special safety related characteristics which might not be obvious from visual inspection These safety features and the protection they give might be lost if the replacement component differs from the original even if the replacement is rated for higher voltage wattage etc Components that are critical for safety are indicated in the circuit diagram by shading jor Use replacement components that have the same ratings especially for flame resistance and dielectric strength specifications A replacement part that does not have the same safety characteristics as the original might create shock fi
44. ct the DC power jack of Adapter from the Printer before Disassembling 2 Use a flat and clean surface 3 Replace only with authorized components 4 Do not force to remove plastic material components 5 Make sure all components are in their proper position 5 2 Plate Bottom 1 Remove four screws securing the Plate Bottom 3 Unplug Auto Cutter wire and FPC Cable from Separate the Plate Bottom from the Lower Case the Main PCB 2 If you want to remove the PCB Cover remove screw securing as shown below Rev 3 02 39 SRP 270 5 3 Cover Assy SRP 270D Type 1 Open the Cover Assy and take out the Spool 2 Push the locking lib to the direction of arrow Winding as shown below and remove the Cover Assy as shown below 5 4 Cover Assy SRP 270A amp SRP 270C Type 1 Open the Cover Assy 2 Pull the Cover Assy upward and remove it Rev 3 02 40 SRP 270 5 5 Case Upper Assy SRP 270A amp SRP 270C Type 3 Separate the Case Upper from the Case 1 Open the cover Assy Lower 2 Remove four screws 41 Rev 3 02 SRP 270 5 6 Case Upper Assy SRP 270D Type 1 Push the locking lib to the direction of arrow and 2 Remove four screws securing the Case Upper remove the Cover Assy as shown below Separate the Case Upper from the Case Lower 5 7 Printer Assy SRP 270A amp SRP 270C Type 1 Before you disassembly the Printer 2 Remove two
45. d the platen When the wire strike s the ink ribbon and paper against the platen a single dot is printed When the energizing of the drive coil is completed the wire and actuating plate are re turned to the standby position by the wire return spring and actuating plate spring The platen is the portion of the base paper feed Assy being struck by the wires during printing PAPER ROLL INK RIBBON WIRE PLATE LLLLPL TTTTTT PLATEN Ea WIRE GUIDE E DRIVE COIL 8 1 10 3 Detection Mechanism The detection mechanism unit consists of the home position detection paper detection Rev 3 02 55 SRP 270 8 1 10 4 Home Position Detection Mechanism The home position detection mechanism consists of the detection protrusion at the left side of the carriage sub assembly and the sensor sub assembly at the left side of the base frame It determines the home position identifies the carriage position and detects carriage sub assembly operation errors The sensor sub assembly consists of an LED and photo transistor When the carriage sub assembly moves the detection protrusion passes between the LED and photo transistor and blocks the optical axis of the photo transistor changing the output level of the photo transistor Printer side The light is blocked The light is not blocked i 5V High ER Low GND signal level at A L Carriag
46. d to protect against potential hazards such as electrical shock 1 1 Safety Precautions 1 Be sure that all of the built in protective devices are replaced Restore any missing protective shields 2 When reinstalling the chassis and its assemblies be sure to restore all protective devices including nonmetallic control knobs and compartment covers 3 Make sure that there are no cabinet openings through which people particularly children might insert fingers and contact dangerous voltages Such openings include excessively wide cabinet ventilation slots and improperly fitted covers and drawers 4 Leakage Current Hot Check WARING Do not use an isolation transformer during this test Use a leakage current tester or a metering system that complies with American National Standards Institute ANSI C101 1 Leakage Current for Applications and Underwriters Laboratories UL Publications UL1410 59 7 With the unit completely reassembled plug the AC line cord directly into a 100VAC or 240VAC outlet of the Adaptor With the unit s AC switch first in the ON position and then OFF measure the current between a known Earth ground metal water pipe conduit etc and all exposed metal part including metal cabinet frame and screw heads and printer The current measure should not exceed 0 1 milliamp Reverse the power plug prong in the AC outlet and repeat the test 5 Design Alteration Warning Never alter or add to the mechanical or electri
47. djustment of main PCB Screw lock Rev 3 02 66 SRP 270 8 5 Tools Lubricants and Adhesives 8 5 1 List of Tools Tool Designation Availability Brush 1 Brush 2 Cleaning brush Screwdriver No 2 Tweezers Round pliers Diagonal cutting nipper Electric Soldering iron Thickness gauge ET holder 2 5 ET holder 3 lt OOOOOOOOOOCO 8 5 2 List of Lubricants and Adhesives Item Cil Grease Adhesive Description CALTEX REGAL R D 68 948P HG 31S Screw lock 8 6 Repair In Consideration of the level of expertise required for implementation of after service and repair procedures for this printer such procedures have been grouped into two rankings Level A and Level B The person in charge of repair therefore should perform the repair procedures appropriate to the class and to his her own level of expertise 8 6 1 Repair Levels 1 Level A Requires general knowledge and technical skills regarding the operating principles and construction of the printer but does not require previous repair experience 2 Level B Requires full knowledge and technical skills regarding the operating principles and construction of the printer as well as previous repair experience 8 6 2 Repair Procedures In the case a problem occurs check its symptoms and status clarify the source of the problem with reference to subsection 8 6 3 Repair guidelines
48. e AC plug and accessible conductive parts see above should be greater than 1 mega ohm 6 Never defeat any of the B voltage interlock Do not apply AC power to the unit or any of its assemblies unless all solid state heat sinks are correctly installed 7 Always connect an instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the instrument s ground lead last Rev 3 02 sf SRP 270 1 3 Precaution for Electrostatically Sensitive Devices ESDs 1 Some semiconductor solid state devices are easily damaged by static electricity Such components are called Electrostatically Sensitive Devices ESDs examples include integrated circuits and some field effect transistors The following techniques will reduce the occurrence of component damaged caused by static electricity 2 Immediately before handling any semiconductor components or assemblies drain the electrostatic charge from your body by touching a known earth ground Alternatively wear a discharging wrist strap device Be sure to remove it prior to applying power this is an Electric shock precaution 3 After removing an ESD equipped assembly place it on a conductive surface such as aluminum foil to prevent accumulation of electrostatic charge 4 Do not use freon propelled chemical These can generate electrical charges that damage ESDs 5 Use only grounded tip soldering iron when soldering or unsoldering ESDs
49. e ribbon is not bent 8 2 3 2 Removing the Ribbon Cassette Grip the left side of Ribbon Cassette and raise slowly the Cassette then raise right direction and lift remove Ribbon Printer Rev 3 02 64 SRP 270 8 3 Maintenance To ensure the maintenance of this printer at its initial performance level throughout a long product life as well as preventing potential troubles be sure to perform maintenance and management according to the points described in the following subsections 8 3 1 Cleaning Eliminating dirt or strains 1 Wipe off the soiled sections using alcohol or benzene 2 Eliminating dust scraps and other foreign particles 3 Use a vacuum cleaner to carefully draw out all foreign particles from every part of the printer x NOTE pon use thinner tricholyene nor ketone solvents as such use may deteriorate or damage the plastic 2 Check the lubricant each cleaned section and perform remaining lubrication as required See subsection 8 4 3 Lubrication points 8 3 2 Inspection The maintenance and check up procedures for this printer are grouped into two types 1 Daily checks that can be easily performed by the operator of the printer during the course of daily work 2 Periodic checks that can be performed only by persons having a through understanding of the printer mechanisms These maintenance and check procedures should be implemented according to the technical level of the person conducting them 8 3 2
50. e and the carriage motor gear rotates in the direction of arrow A the Gear Reduction B Gear Reduction A Gear Reduction B rotate in the directions of arrows B and C B respectively This causes the Lever Ribbon Feeder Assy to move in the direction of arrow E rotating round the Gear Reduction A shaft in the center until the Gear Reduction B goes in with the Gear Reduction C Since the Gear Reduction C and the ribbon feeder are always engage d the ribbon feeder rotates in the direction of arrow G When the carriage motor rotates in the reverse direction and the carriage motor gear rotates in the direction of arrow H the Lever Ribbon Feeder Assy moves in the direction of arrow F disengaging the Gear reduction B from the Gear Reduction C Therefore the ribbon feeder Assy rotates in the direction of arrow G only when the carriage motor rotates counterclockwise Then the ribbon feed and ribbon hold rollers in the ribbon cassette which are engaged with the ribbon feeder Assy rotate and the ribbon is feed RIBBON FEEDER ASSY GEAR RE_C LEVER RIBBON FEEDER GEAR RE_B GEAR RE_B GEAR RE_A FIGURE RIBBON FEEDING SYSTEM Operation of Color change Color change system consists of Ribbon feeding Mechanism in section 8 1 10 6 and Ribbon Shifting Mechanism Shifting Mechanism on Ribbon consisted of Head carriage Assy Ribbon Frame Lever color change solenoid Assy as shows in figure HEAD CARRIAGE ASSY RIBBON FRAME LE
51. e sub assembiv detection protrusion Rev 3 02 56 SRP 270 8 1 10 5 Paper Feeding Paper feeding is performed by conveying the paper feed motor s rotational power from the paper feed motor gear through the paper feed reduction gear paper feed gear and paper fed roller Since the paper feed roller and paper hold roller are pressed together paper advances to the top of the paper feed frame assembly because of the friction between the rubber of the paper feed roller and the paper hold roller As shown in Figure Paper feeding mechanism consists of Rubber Roller Hold Roller Assy Step Motor Gear Step M T idle Gear MF and Gear M F Idle The paper feeding operation can be selected by controlling the Step Motor For detail explanations of paper feeding operation refer to SPECIFICAT10NS for SMP 710 710N Paper feeding is made as follows As Step Motor set turning by electric signal Gear Rubber Roller comes into turning passing Gear Step M T Idle for Shaft Roller is pressed to rubber Roller by Spring Roller Paper is feed by friction A min Pitch is 1 144 Under condition Step Motor stops turning Gear MF to direction of arrow or to 1 he contrary and can feed or back feed as paper wants PAPER ROLLER PAPER GUIDE GEAR MOTOR RUBBER ROLLER HOLD ROLLER GEAR ROLLER KTC3875 Paper feed con 3 02 57 SRP 270 8 1 10 6 Ribbon feeding When the carriage motor rot ate s counter clockwis
52. er Head Thermistor Specification Item Description Remark Type LP310 1J Tama Elec Co Ltd or Any thermistor which yP Correspond to it correspond to it correspond to it Electronic Resistance R25 17 3 KW At 25 C Characteristics B Value 3950K 2 Max Operating Limit Operating Temp 120 C 150 C Time Constant 30 sec In the air Rx Formula e RX R25 x Exp B x 1 TX 1 T25 T Absolute Temperature 3 3 6 Feed amp Carriage Motor Specification Item Description Remark Model 425 048 5 4 NMB Electronic Co Ltd Voltage 24 VDC x 1096 Current 500 mA Phase Peak Resistance 10W Step Angle 7 5 Pull Out Torque 1200 PPS 200 g cm 3 3 7 Auto cutter specification Item Description Remark Model ORC RUG80 2 OHYANERIKI MFG Co Ltd Type Guillotine Type Motor DC Brush Motor Fk 180SH 12280 Mabuchi Motor Voltage 24VDC 10 Current 400 mA Average 1 6 A Peak 3 3 8 Paper Specification Item Description Remark Paper Type Roll Paper Paper Roll Width W76 0 5 mm 2 99 0 00200 Paper Roll Diameter Max x 2 83mm 3 26 Normal Paper Thickness 1 Sheet 0 06 0 085mm 0 0028 0 0034 Weight 52 3 64 g m2 0 115 0 1411 Ib Rev 3 02 20 3 3 9 Ribbon Cassette Specification SRP 270
53. ert GEAR PF IDLE SGEAR KNOB and GEAR KNOB IDLE Lastly assemble WASHER 2 Grease the outer diameter of gear with EM 501 lt Check Point gt Check SGEAR KNOB to rotate smoothly Name of Parts Method and Procedure Drawings PLATEN PLATE TAPE D F PLATEN 1 Paste the ZTAPE D F onto the PLATEN PLATE and set the sub Assy into the rectangular hole of the exclusive JIG 2 Set the PLATEN to fit the groove of JIG and paste by pushing Rev 3 02 77 8 8 2 Main assemblies 8 8 2 1 Base Paper Feed Assy 1 SRP 270 Name of Parts Method and Procedure BASE PAPER FEED SHAFT TAKE UP TAPE CUSION RUBBER PLATE 2EA SPLATEN ASSY SCREW SPECIAL M2 6 7 5 2EA SHAFT RUBBER ROLLER 8ROLLER PAPER GUIDE 2EA BEARING 2EA OE RING 23 2EA MGEAR ROLLER BRACKET PF R ASSY STEP MOTOR PF SCREW TAPPING M3 6 2EA 1 At first set COBASE PAPER FEED in the JIG Next insert SHAFT TAKE UP into the hole Lastly press it by Lever Press 2 Set TAPE CUSION to fit rectangular hole of BASE PAPER FEED and then insert RUBBER PLATE in both side 3 Insert PLATEN ASSY into the rectangular hole and then tighten two SCREW SPECIAL 4 BASE PAPER FEED stand right side and then insert two 85ROLLER PAPER GUIDE and BEARING to fit SHAFT RUBBER ROLLER in both side by one Next fix the Sub Assy into the back face of BASE PAPE
54. es 6 Because the PCB is at the bottom of the printer take care that there is no contact between its parts and mounting base and that no foreign matter contacts the board 7 If end mark on Rolled paper appears Replace the Rolled paper 8 2 2 Paper Setting Procedures Insertion Removal Make sure to always use only the paper types prescribed in the SMP 710 710N Specifications 8 2 2 1 Inserting Rolled Paper 1 As shown in figure cut straight the leading edge of rolled paper 2 After the leading edge of paper goes through Paper Guide slide the paper until it reaches the Rubber Roller and Hold Roller 3 In order to pas s the leading edge of paper between Rubber Roller and Hold Roller rotate Gear Knob in the arrow direction NOTE Never perform paper insertion without carefully following the above precautions because such handling may result in defective paper feeding or paper jams Rev 3 02 62 SRP 270 8 2 2 2 Precautions on Paper Insertion 1 After cutting the edge of paper straight as shown in figure insert the paper Which is described on next figure 2 Insert the paper straight into the paper entrance section 3 The end of the paper which is crinkled and bended should not be inserted 4 Make sure that the rolled paper tape is ripped off and discarded before inserting into the printer 8 2 2 3 Precautions on paper removal Cut the paper behind Bas e Paper Feed Assy 8 2 2 4 Paper removal must be
55. es may appear anywhere in the manual They draw your attention to additional information about the item Precaution symbols Indicates a Safety Precaution that applies to this part component Indicates the part or component is electro statically sensitive device Use caution when handling these parts Copyright 2008 by BIXOLON Co Ltd All right reserved This Manual may not in whole or in part be copied photocopied reproduced translated or converted to any electronic or machine readable from without prior written permission or BIXOLON Co Ltd m Overview of this Receipt Printer This System Receipt Printer is a microprocessor based system using a 16 bit microprocessor This Service Manual provides the technical information for many individual component systems circuits and gives an analysis of the operations performed by the circuits If you need more technical information please contact our service branch or R amp D center Schematics and specifications provide the needed information for the accurate troubleshooting All information in this manual is subject to change without prior notice Therefore you must check the correspondence of your manual with your machine No part of this manual may be copied or reproduced in any form or by any means without the prior written consent of BIXOLON Co Ltd Rev 3 02 5 SRP 270 1 Precaution Segment Follow these safety servicing and ESD precautions to prevent damage an
56. fications str mnn 49 8 173 Paper Speciti ations retreat a a a 50 8 1 4 Ribbon Cassette specifications nr 50 8 1 4 Ribbon Cassette nr 51 8 1 5 Environmental mnn nn nn 51 ce A a A La da 52 8 1 7 Main Unit specifications iere tede ia en ce ttai a da 52 8 1 8 Electrical specifications 53 8 1 9 Mechanisms specifications 53 8 1 1T0 Principle of Movement teet ru eee centena cech kl e ERE pues a De a 54 Rev 3 02 3 SRP 270 9 2 Handling the Printer ati ane 61 8 2 1 Precautions on Printer 61 8 2 2 Paper Setting Procedures 62 8 2 3 Ribbon Cassette nr 64 3 3 Maintenances ici niin bet b t a alee tens oer pee Heec edie 65 8 3 1 tee wi ere o te pedites tannin 65 98 32 IriSDeCtlon c it tette eet d ER Ret qutt utt cule et ee rhe ei 65 8 4 Lubricants and Adhesive Application 66 8 4 1 Lubricant Reqljirements dienten e a eee 66 9 4 2 E bricant Types zoren cR DOR e ied Re Tee PUR et eode erudire Dade 66 9 4 3 E bricationiPolnts
57. for Driving Print Heads 9 Print Head Head 3 10 Printer Head Head 5 11 Printer Head Head 1 12 Printer Head Head 7 13 Thermistor Thermistor Output Value in Printer Head 14 15 16 GND 17 18 Carriage Motor ON OFF Control Driving voltage or Holding Voltage Of Carriage Motor 19 Carriage Motor A Phase A of the Carriage Motor 20 Carriage Motor B Phase B of the Carriage Motor 21 Vcc 5 Vdc 22 Vcc 23 Feed Motor ON OFF Control Driving Voltage or Holding Voltage of Feed Motor 24 Feed Moter A Phase A of the Feed Motor 25 Feed Moter B Phase B of the Feed Motor 26 H S Output 27 P E Output 28 24 Vdc The Voltage for Driving Motors 29 24 Vdc The Voltage for Driving Motors 30 Sol Rev 3 02 19 3 3 4 Printer Head Specification SRP 270 Item Description Remark Model DH400 G10 Type Ballistic Type Free Fight Number of Wire 9Pin Resistance 10W 15 Solenoid Inductance 4 5mH 15 Open Circuit Temperature Rate 155 Deg C Insulation Resistance 10MW Type constant Voltage voltage 24VDC 5 Normal At Printer Head Driver Circuit Current 1 3A Pulse 330 Sec Head On Time Fly Back Voltage 48VDC Min Platen Gap 0 51 0 1 mm Performance Max Frequency 1500 Hz Forms Capability Original 2 Copies Temperature Max Operating Temp 65 C Max Transient Temp 140 C For 5 Minutes 3 3 5 Print
58. hen the word length is 7 bits you can not parity check OFF status Rev 3 02 1 SRP 270 2 2 3 Setting the DIP switch IEEE1284 Parallel USB Interface DIP Switch 1 SW FUNCTION ON OFF DEFAULT Emulation Selection Refer to the following Table 1 oa 3 Auto Cutter Enable Disable OFF 4 FONT SPACE 2 3 OFF 5 z 6 Function for Service Engineer 7 OFF 8 Korean Tvpe Selection Unified Complete OFF DIP 2 FUNCTION ON OrF DEFAULT Always Always E Auto Line Feed Enabled Disabled E CENE Pa Reseed 212 _ _ 5 Reswed OFF e Table 1 Emulation Selection SW 1 SW 2 MODE OFF OFF Epson OFF ON Citizen ON OFF Star Table 2 Baud rate bps Selection 12 Rev 3 02 SRP 270 2 2 4 Hexadecimal Dumping This feature allows experienced users to see exactly what data is coming to the printer This can be useful in finding software problems When you turn on the hexadecimal dump function the printer prints all commands and data in hexadecimal format along with a guide section the help you find specification commands To use hexadecimal dump mode please follow these steps 1 After you make sure that the printer is off 2 Set DIP switch 2 2to ON 3 Turn on the printer and
59. ication 5 Check if printing paper feeding ribbon feeding and ribbon shifting are normal If not perform repair according to subsection 8 6 3 Repair guidelines 6 Observe all of the functions and check for malfunctions due to wear or deformation of parts paper jam etc If there is a malfunction perform repair according to subsection 8 6 3 Repair gulde7 1nes Rev 3 02 65 SRP 270 8 4 Lubricants and Adhesive Application Lubrication and application adhesive plays an important role in maintaining this printer at its initial performance level throughout a long product life as well as preventing potential troubles Make sure to apply the specified lubricants or adhesive in the appropriate amounts at the specified intervals 8 4 1 Lubricant Requirements Before applying the lubricants during an assembly or disassembly procedure be sure to first thoroughly clean the part to be lubricated For details on lubrication Lubrication Classes Concerning the lubrication interval lubrication should be performed periodically according to the lubrication classes described below If lubrication becomes deficient due to cleaning disassembly or parts replacement be sure to lubricate the required part regardless of the lubrication interval A Lubrication every 6 months B Lubrication after on overhaul or every 1 million lines 8 4 2 Lubricant Types The type of oil used greatly influences performance and durability and special attention
60. in Wire Frame Ground 1 VBUS Red Host Power DC5 V 500 mA 2 D White Differential Data Line 3 D Green Differential Data Line 4 GND Black Signal Ground 3 5 4 c USB I F Cable Table 3 21 USB Pin Description Overmolded Series A Plug Always upstream towards the host system 1 8m Overmolded Series B Plug Always downstream towards the USB Device Rev 3 02 Figure 3 10 USB A B Type Cable 27 SRP 270 Detail A A Detail B B C Typical USB Shielded Cable Series A Plug Series B Plug Polyvinyl Chloride PVC Jacket 1 5 gt 65 Tinned Copper Braided Shield 10 5 Aluminum Metallized Polyester Inner Shield 28 AWG STC Drain Wire 2 V 12 0 Red Veus Green D Black Ground White D All dimensions are in millimeters mm 376 unless otherwise noted Dimensions are TYPICAL and for general reference purposes only 9 0 Optional Molded Strain Relief 3 6 Cash Drawer Specifications 3 6 1 Cash Drawer Cable 10 mm Ferrite Core 1 turn OP 18E 18 2 x 12 5 x 25 5 Figure 3 12 Cash Drawer Cable 3 6 2 Cable Connection Pin No Description Direction 1 Frame GND 2 Cash Drawer Driver Signal 1 Output 3 Drawer Open Close Signal Input 4 24V 5 Cash Drawer Driver Signal 2 Output 6 Signal GND Table 3 23 Cash Drawer Cable Connection XX No
61. int Head Winding resistance 9 50 10 at 25 C 77 F per phase Unit Drive voltage 24 VDC 10 Type Photo sensor Home Position Voltage 5 VDC 5 Sensor Output level LOW when the carriage home position is detected Rev 3 02 52 SRP 270 8 1 8 Electrical specifications 8 1 8 1 The explanations of the circuit operations 1 Head Carriage Step Motor It rotates and moves the Dot Head by using the several gears and synchronous belt Print Speed 4 6 Line Sec This step motor is control by constant current method So current flows two red line of step motor is Max 560mA This step motor is control by SMA7029M Recommended 2 Paper Feed Step Motor It is used when the paper is fed The characteristics of step motor is as same as head carriage step motor 3 Home Sensor It detects the head position It decides the start point of printing 4 Solenoid It plays part in exchanging printing color red black 5 Head It plays part in printing a character Axiohn Co 8 1 8 2 Circuit Block Diagram COMP SIDE SMP 710 710N MAIN PCB 00 05 19 T113C246 Q 0000000 CON 000000 12 09 6 0 9 8 SAMSUNG ELECTRO MECHANICS O SMA7029M 8 1 9 Mechanisms specifications This printer consists of 5 mechanisms Head feeding Mechanism Printing Mechanism Paper Feeding Mechanism Detector Mechanism Ribbon Mechanism How is the external view of SMP 710 710N Impact dot matrix printer as
62. is required to its low temperature characteristic Consequently the oils to be used with this printer are specified by us on the basis of the result of the thorough analyses of technical data for many types of oils and various experiments 2 types of oils to be used with this printer are 315 G 948P 8 4 3 Lubrication Points No No Lubrication Point Oil type 1 Outer periphery of shaft hold roller HG 31S 2 Contact point between cam of head carriage and ribbon frame HG 318 3 Contact point between shaft ribbon frame and lever cold change HG 318 4 Contact point between spring ribbon feeder and ribbon feeder HG 31S 5 Outer periphery of shaft head carriage 315 6 Contact point between solenoid plunger and spring solenoid G948P 7 Outer periphery of all gears HG 318 8 Outer peripherv of shaft head guide HG 318 Precautions on lubrication Never apply lubricant to Gear Ratchet or outer periphery of Rubber Roller If lubricant has accidentally been applied to these parts clean them with alcohol 8 4 4 Adhesive Application Requirements To prevent from screws getting loose by various vibration while transporting the printer adhesive should be applied after tightening screws When performing disassembly or parts replacement 8 4 5 Adhesive types The adhesive type for use with this printer Screw lock 8 4 6 Adhesive Application Points No Adhesive Application Point Adhesive Type 12 Volume resistance a
63. it is opened or not This sensor switch turns on for the drawer open condition and turns off for the other Caution make sure that the Cash Drawer solenoid resistance is more than 200 DWR1 2 DRAWER DRIVING CIRCUIT SOLENOID COMPULSORY DRAWER Figure 4 6 Cash Drawer Block Diagram Rev 3 02 33 SRP 270 4 3 4 I F PBA Detect Block Diagram When the printer is ON the printer checks what kind of the I F PBA is installed After detection the CPU specify the I O port properly The following is the method of I F PBA detection First The CPU sends a I F Sel signal P7 3 to I F PBA The I F PBA has the three return Signal DIPC1 C3 The CPU recognize the I F PBA by the value of the three return signal I F PBA DIP C1 DIP C2 DIP C3 RS 232C L L H RS 485 L H L IEEE1284 H L L USB2 0 H H L No Connection L L L I F SEL is executed only one time i after RESET C1 C2 C3 H L L IEEE1284 PBA Rev 3 02 34 4 3 5 RS 232C Communication Block Diagram The CPU is used for serial communication And also RS 232C Driver MAX232 is used to serial communication Show following block diagram TXD DTR TXD RXD DTR DSR MAX232 D SUB25 CPU DRIVER M30622SFP FEMALE RS 232C SERIAL F BOARD Figure 4 8 RS 232C Communication Block Diagram TRANSMIT PRINTER HOST BUSY HOST NOT BUSY i HOST BUSY PC HOST PRT transmits a data Printer checks whether
64. le 3 14 RS 232C Specification Note The HandShaking Flow Control Data Word Length Baud Rate Parity functions depend on the DIP Switch settings Refer to the User s Manual 3 5 1 b RS 232C I F Cable E U 10mm Printer Side D SUB25P Male CONN User Spec In Case PC D SUB25P Female or Ferrite Core 1 Turn OP 118E 18 2 x 12 5 x 25 5 D SUB9P Female Figure 3 6 RS 232C Cable Rev 3 02 22 3 5 1 c Cable Connection PRINTER SIDE 25P SRP 270 HOST PRINTER HOST SIDE 25P SIDE 25P SIDE 9P S G TXD RXD RTS CTS DSR 20 DTR S G Figure 3 7 RS 232C Cable Connection 3 5 1 d Signal Description Pin Signal name Direction Function 1 FG Frame Ground 2 TxD Output Transmit Data 3 RxD Input Receive Data 4 RTS Output Ready To Send 5 CTS Input Clear To Send This signal indicates whether the host computer can receive data H W flow control 1 MARK Logic1 The host can receive a data 6 DSR Input 2 SPACE LogicO The host can not receive data 3 The printer transmits a data to the host after confirming this signal 4 When XON XOFF flow control is selected the printer does not check this signal 7 SG Signal Ground This signal indicates whether the printer is busv HAW flow control 1 MARK Logic1 The printer is busy 2 SPACE Logico The printer is not busy 20 DTR Output 3 The host tra
65. me it with a new spring Roller deformed 8 Shaft B Check to be If deformed replace Roller rotates something in Gear the pertinent Shaft malfunction and to be well touched Roller Turning B Check to be Remove dusts direction of something in gear and removed wire Gear to be well touched Rev 3 02 70 SRP 270 Phenomenon Condition Cause Level Check point amp Method Repair Method 8 Uneven Uneven line Defective A See cause D of phenomenon 1 paper spacing of the paper supply feeding pitch printed paper Deformation B See cause 7 of phenomenon 1 of the Spring Roller Wear of the B See cause 6 of phenomenon 1 Rubber Roller The Shaft B See cause 8 of phenomenon 1 Roller rotates malfunction Wear or B See cause 5 of phenomenon 1 damage of the teeth of the gears Deformation B Check if Platen Paper If deformed replace of the Platen Guide has become it with a new platen Paper Guide deformed Paper Guide 710 Bad turning A See cause 9 of phenomenon 1 of gear 9 Ribbon Despite normal The ratchet A Check whether the Replace it if mechanism operation of of Ribbon ratchet of Ribbon damaged or worn does not the printing Cassette is Cassette is damage or out function mechanism damaged or worn out the ribbon not worn out feed Wear A Check ribbon feed If there is wear or damage of the Assy and gear damage
66. n terminals these is no connector and conductivity FPC terminals Damaged B To check if the If the resistance is lead of a dot resistive value of the outside rated driving coil pertinent dot driving values replace the coil is within rated head values measure the resistance of the terminal between connectors Rated value 200 10 Defective B See cause 2 of phenomenon 2 timing detector sub Assy 5Defective B See cause 5 of phenomenon 2 input charge pulse 4 Missing of All of date are Defective A See cause 4 of phenomenon Dot Head not printed contact of the Head FPC Malfunction B Check if paper dustis If the paper dust is of the Head caught in the tips of caught remove it unit the head pin S Defective B See cause 4 of phenomenon 2 Timing detector Assy Defective B See cause 5 of phenomenon 2 input charge pulse Rev 3 02 69 SRP 270 Phenomenon Condition Cause Level Check point amp Method Repair Method 5 Intermittent DWear or A Check the teeth of If worn or damaged Intermittently changes in damage of each gear and of the replace the defective character width Lead Cam or Lead Cam for wear defective gear or character the gear and damage the Lead Cam width Defective B input charge See cause 5 of phenomenon 2 pulse 6 Motor DDefective B Use an oscilloscope to Replace the R L rotation does RL reset check if
67. nsmits a data to the printer after confirming this signal 4 When XON XOFF flow control is selected the host does not check this signal 3 5 1 e H W Flow Control Table 3 15 RS 232C Pin Description When DTR DSR flow control is select before transmitting a data the Printer checks whether the host is BUSY or not If the host is BUSY the Printer does not transmit a data to the host If the host is not BUSY the Printer transmits a data to the Host The host is the same Refer to the Interface Part of Chapter 4 3 Special Circuit Diagrams Rev 3 02 23 SRP 270 3 5 1 f S W Flow Control When XON XOFF flow control is selected the printer transmits XON ACSII 11h or XOFF ASCII 13h signal through the TXD line If the Printer is BUSY the Printer transmits XOFF ASCII 13h to host through the TXD line Then the host recognize that the Printer is BUSY So the host does not transmit a data to the Printer If the Printer is released from BUSY the Printer transmits XON ASCII 11h to host through the TXD line Then the host recognize that the Printer is not BUSY And the host transmit a data to the Printer Note Refer to the Operation Manual about XON XOFF flow control 3 5 2 RS 485 Serial Interface 3 5 2 a Specification Item Description Remark Data Transmission Serial Synchronization Asynchronous HandShaking H W DTR CTS Same as DSR XON ASC Code 11h Flow Control e S W XOFF XOFF ASC
68. ool Paper Winding Roll p i 7 Release the holder after fitting the Roll Paper Core onto the Holder Make sure to load the paper roll so that it rotates in the correct direction SRP 270 2 2 Operation 2 2 1 Setting the DIP switches The DIP switches are located on the bottom of the printer The DIP switches are used to set the printer to perform various functions Follow these when changing DIP switches setting 1 Turn the printer power switch off 2 Remove the screw on the bottom of the printer and open the bracket 3 Flip the DIP switches using tweezers or another narrow ended tool Switches are on when up and off when off down 4 The new setting takes effect when you turn on the printer XX Note Always change DIP switch settings only when the printer is turned off Change made with the power on have no effect and then on again 2 2 2 Setting the DIP switch RS 232C Serial Interface DIP Switch 1 SW FUNCTION ON OFF DEFAULT Emulation Selection Refer to the following Table 1 oe 3 Auto Cutter Enable Disable OFF 4 FONT SPACE 2 3 OFF 5 6 Function for Service Engineer 7 OFF 8 Korean Tvpe Selection Unified Complete OFF DIP Switch 2 FUNCTION DEFAULT Alwavs Alwavs Paritv selection EVEN ODD OFF Baud Rate selection Refer to the following Table 2 al W
69. performed using one of the four method below Remove method by manual 1 Back feed the paper by rotating Gear Knob to contrary arrow direction manually and remove the paper 2 After Feed the paper by rotating Gear Knob to arrow direction cutting paper in backside Base Paper Feed Assy and remove the paper Remove method by automatically 1 Back feed the paper by using electrical operation by paper back feed button then remove the paper 2 After cutting paper in backside paper guide Assy feed the paper by using electrical operation by paper back feed button then remove the paper NOTE Never perform paper removal without carefully following the above precautions because such handling may result in defective paper feeding or paper Jams ge Rev 3 02 63 SRP 270 8 2 3 Ribbon Cassette Installation The Ribbon Cassette use must conform to the standards prescribed in the Specifications Never use non standard types because such use may result in such trouble as the malfunction of printing quality 8 2 3 1 Ribbon Cassette Installation Procedure for installing the Ribbon Cassette as shown figure 1 By finger turn the ribbon feeding roller of the Ribbon Cassette in the arrow direction to tighten up slack in the ribbon 2 Bet the Ribbon Cassette onto the Ribbon Frame then push the Ribbon Cassette down 3 After setting is done turn the ribbon feeding roller by finger again in the arrow direction and check that th
70. r nAck PtrClk PtrClk 11 Printer Busy PtrBusv Data3 7 PtrBusy 12 Printer Perror AckDataReq Data2 6 AckDataReq 13 Printer Select Xflag Data1 5 Xflag 14 Host nAutoFeed HostBusy HostBusy 15 NC ND ND 16 GND GND GND 17 FG FG FG 18 Printer Logic H Logic H Logic H 19 30 GND GND GND 31 Host ninit nlnit ninit 32 Printer nFault nDataAvail Data0 4 nDataAvail 33 GND ND ND 34 Printer DK Status ND ND 35 Printer 5V ND ND 36 Host nSelectin 1284 Active 1284 Active 3 5 3 c IEEE1284 I F Cable Table 3 19 IEEE1284 Pin Description Host Printer Centronics Side Side 36P Figure 3 9 IEEE1284 Cable Rev 3 02 26 3 5 4 USB2 0 Interface SRP 270 support the USB Universal Serial Bus Serial Communication 3 5 4 a Specification SRP 270 Item Description Remark Transfer Type BULK Data Signal Bi direction Half Duplex Differential Signal Pair D D Data Format NRZI Format Zero Bit Stuffing after 6 ones Transceiver Differential Receive Sensitivity 200 mV Differential common Mode Range 0 8 2 5 V Single End Receiver Threshold 0 8 2 0 V Speed 12 Mbps Power Self Powered Cable amp Connector Cable 5m 2m Connector B Type Other Support USB SPEC V1 1 3 5 A b Signal Description Table 3 20 USB Specification Pin No Signal Name Assignment Color Function Shell Shield Dra
71. re tac 20 3 3 9 Ribbon Cassette Specification nn 21 3 3 10 Other Component Specification nar 21 3 4 SMPS SpecifICatilons 5 site p emt re Pt toe ver Put a eoa yino a 21 3 4 1 SMPS Switching Mode Power Supply Specification 21 3 4 2 SMES Output Coriiector eerie opo dc E a P OR E eer oa er aed er 21 3 5 Interface SpecifICatiOns x re era eee ee aen o JA e 22 3 9 1 RS 232C Serial Interface catene o Hee re enr PU E e eer tented 22 3 5 2 5 485 Serial snanar ntrama mnn nn 24 3 5 3 IEEE1284 Parallel Interface 25 3 o 4 USB2 0 Interface tO mu dcm 27 3 6 Cash Drawer Specifications nanna 28 3 6 1 Cash Drawer Cable 28 3 6 2 Gable CONECO A taste ien ta Santa nee re e RA RB RA STAR i ka a a 28 Rev 3 02 e SRP 270 4 29 CES B TM DIAG FANN Aid p mmm 29 C EPA Block BIET 30 4 3 Special Circult DescriptiOnis a etre Dok a Raine A a a RR Rd Eno 31 4 3 1 POWer ir llit 4 mL 31 4 3 2 RESET CIEGUIA A a A oe eee o a A A A ds a To 32 4 3 3 Cash Drawer Circuits iena raed
72. re or other hazards Rev 3 02 6 SRP 270 1 2 Servicing Precaution WARNING 1 First read the Safety Precaution section of this manual If some unforeseen circumstance creates a conflict between the servicing and safety precautions always follow the safety precaution WARNING 2 An electrolytic capacitor installed with the wrong polarity might explode 1 Always unplug the unit s AC power cord from the AC power source or the Power Switch off before attempting to a Remove or reinstall any component or assembly b Disconnect an electrical plug or connector c Connect a test component in parallel with an electrolytic capacitor 2 Some components are raised above the printed circuit board for safety An insulation tube or tape is sometime used The internal wiring is sometimes clamped to prevent contact with thermally hot components Reinstall all such elements to their original position 3 After servicing always check that the screws components and wiring have been correctly reinstalled Make sure that the portion around the serviced part has not been damaged 4 Check the insulation between the blades of the AC plug and accessible conductive parts example metal panels and input terminals 5 Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an insulation resistance meter 500V to the blades of the AC plug The insulation resistance between each blade of th
73. replace it teeth of the reduction a b c for gears wear of damage 10 Defective When the Other B Check if other Clean out paper paper is substances substance may exist particles with a insertion inserted it may exist in in paper passing track vacuum cleaner jams or does paper passing not come out to track the exit Method of A Check if paper is Always insert the paper insertion inserted according to paper according to the method described the method described 11 No No working of DBetraying B Check betraying or Substitute with new working on ribbon shifting from damage damage transform of spring or reconnect ribbon in spite of or transforming spring solenoid it shifting normally of spring case of damage moving printing solenoid or transform of it substitute by new spring 2 Check betraying from Substitute with new spring shift clutch and spring or reconnect damage and with it in case of transform of it betraying case of damage or transform of it substitute by new spring aAttrition or Measure exterior In case of attrition or damage of shift diameter of spring damage substitute cam shift shift clutch and check them with eyes Rev 3 02 71 SRP 270 Phenomenon Condition Cause Level Check point amp Method Repair Method 12 No DEntry of B Measure resistant In case cutting working of solenoid is cut value between
74. sembly and main assembly procedures First assemble the sub assembly then proceed to assembling the main assemblies Perform assembly while referring to component shapes and mounting positions shown in exploded view The symbol in the Assembly Step column indicates the need for a Check or Adjustment The Adjustment process is explained in section 8 9 Even if only a small amount of disassembly has been performed confirm the presence absence of the pertinent adjustment point during assembly Circled numbers in the Assembly Step column indicate that lubrication is required during assembly of the component and that such lubrication will be difficult unless performed during assembly Details on the application of lubricants or adhesives including point that require application after total assembly of the printer are described in section 8 4 Lubrication and Adhesive Application perform such application while referring to exploded view All small parts are represented by abbreviations as listed in the table below List of abbreviations for small parts Abbreviation Explanation WBH Washer faced Binding Head Screw PH Pan Head machine screw WPH Washer faced Pin Head Screw T T PH Pan Head Taptite screw T P PH Pan Head Tapping Screw PW Plain washer WW Wave Washer PSW Poly slide washer with slit SP Spring pin RE Retaining ring type E PP Parallel pin FS Franged Screw Rev 3 02
75. shown For details on the operating principles and handling of each of the mechanisms refer to Principle of Movement in section 8 1 10 and Handling Maintenance and Repair in 8 2 MANUAL CUTTER MANUAL SCREW HEAD COVER KNOB GEAR STEP MOTOR RIBBON CASSETTE AD LEVER FRAME MAIN Rev 3 02 53 SRP 270 8 1 10 Principle of Movement 8 1 10 1 Head Feeding Mechanism This printer is using DC24V PM Type Stepping motor As shown in figure the motor section consists of the motor Motor speed control IC motor drive brake circuit and motor speed interface When the carriage motor is driven and the carriage motor gear is moved in the direction of arrow B forward rotation the rotational power is conveyed to the belt drive pulley then the belt Next the carriage sub assembly which is fixed to the belt moved in the direction of arrow B When the carriage motor gear is rotated in the direction of arrow A reverse rotation the carriage sub assembly is moved in the direction of arrow A MOTOR CARRIAGE GEAR PULLEY HEAD CARRIAGE SUB ASSEMBLY R2 10k Q2 IRFU9020 KTC3875 step1 com VCC D1 VCC RLR4004 Head carriage con ka step1 com Rev 3 02 54 SRP 270 8 1 10 2 Printing Mechanism When the specified print head drive pulse is input to the drive coil the iron core is magnetized and the actuating plate is pulled in the direction of arrow A This action pushed the wire towar
76. substitute solenoid Solenoid terminal of solenoid resistance Some 70 10 25 Gear tooth A Check with eyes Substitute dust to cam ratchet transforming or take out or part and ribbon dusting in gear tooth frame get cam ratchet and dusted or ribbon frame altered 13 No Transforming B See cause 2 of phenomenon 12 working of or damage of ribbon spring shift rotating clutch aAttrition or B See cause 3 of phenomenon 12 damage of shift cam shift ratchet Transform or B Measure size of the In case of transform damage of part moving cam of or damage of ribbon ribbon frame ribbon frame frame substitute measure horizontal them degree and check with eyes Betray of A Check with eyes Set ribbon paper fit ribbon papers ribbon paper in ribbon ably with ribbon frame frame Volume of A Different with each Ribbon substitute ribbon other of color and rate of ribbon Rev 3 02 72 SRP 270 8 6 4 Assignment Connector Pin 8 6 4 1 Connector 30pin Connector Head head carriage paper feed step motor solenoid P E sensor control Model 1 0mm FFC cable Mechanism side 403 030 099 061 Taiwan TACK co P N In or Out Description P N In or Out Description 1 Output head 6 16 Output ground 2 Output head 8 17 Output ground 3 Output head 4 18 Input head carriage control sig 4 Output head 9 19 O
77. te 24V is always output through pin 4 during power on Rev 3 02 28 SRP 270 4 Hardware 4 1 Wiring Diagram NEAR_END SENSOR SERIAL INTERFACE PBA MAIN PBA TOP VIEW AUTO CUTTER PRINTER MECHANISM Figure 4 1 Board Wiring Diagram Rev 3 02 29 SRP 270 4 2 Block Diagram POWER ADAPTER DC24V RS 485 RS 485 POWER SUPPLY CIRCUIT 24V 5V i i IEEE1284 PARALLEL i DRIVER CONNECTOR RESET Hia onto Rs a CIRCUIT USB USB i DRIVER CONNECTOR EPROM I F BOARD TMS27C010 CPU i P E id M30622SFP SENSOR i PLEND HOME CIRCUIT SENSOR ADDR i sam Kd HEAD DOT PRINTER 2256 Co DRIVE i HEAD DOT CALF MOTOR LED amp LED amp BOTTON DRIVER switch y cRur jy DIP DIP SENSING TC INI ES AUTO CUT AUTO CUTTER ____ kg CUT SENSOR DRAWERS DRIVER SENSOR NEAR END COMPULSORY CIRCUIT SENSOR CLOCK CIRCUIT PRINTER MEACHANISM CLOCK 14 7456MHz Figure 4 2 Block Diagram Rev 3 02 30 SRP 270 4 3 Special Circuit Descriptions 4 3 1 Power Circuit This system is operated under 110Vac or 230Vac The power circuit supplies the three differential DC voltage sources POWER Ven 24V N ADAPTER C 4DC24V For Drawer Food Motor Other Ven 24V VOLTAGE REGULATION Vec 5V CIRCUIT 1 For Logic Sensor Figure 4 3 Power Block Diagram No V
78. the host is BUSV RECEIVE PRINTER PRT BUSY PRT NOT BUSY PRT BUSY PC HOST HOST transmits a data HOST checks whether the Printer is BUSY Figure 4 9 RS 232C Communication Waveform Rev 3 02 35 SRP 270 PRINTER PRINTER SRP 270 4 3 6 RS 485 Communication Block Diagram The CPU is used for serial communication And also RS 485 Driver MAX488 is used to serial communication Show following block diagram DX CPU c M30622SFP RD1 a UY n dum LILU CTS Same as DSR esi Lu c RS 485 I F BOARD Figure 4 10 RS 485 Communication Block Diagram TRANSMIT PRI NTER DATA ji L S Level Gnd Level E Gnd a data 1 Byto RECEIVE PRINTER L AB AB i Level Level Level Level 5V Received data 1 Level 5V Figure 4 11 RS 485 Communication Waveform Rev 3 02 36 SRP 270 4 3 7 Parallel Communication Block Diagram The printer support the bidirectional Parallel Interface with Centronics Nibble Byte Mode The Centronics is Forward and the Nibble Byte are reverse Mode Data 7 0 74HC574 DRIVER 74HC574 DRIVER M30622SFP INT NE E HOST STATUS PARALLEL F BOARD Figure 4 10 IEEE1284 Communication Block Diagram 4 3 8 USB Communication Block Diagram The printer support the USB
79. then the printer enters the hexadecimal dump mode 4 Run any software program to send data to the printer The printer will print all the codes it receives ina two column format The first column contains the hexadecimal codes and the second column gives the ASCII characters corresponding to the codes 1B 21 00 1B 26 02 40 40 8 00 02 0D 1B 44 OA 14 1E 28 00 01 0A 41 OD 42 43 CA B C Note 1 A period is printed for each code that no ASCII equivalent Note 2 During the hex dump all the commands except DLE EOT and DLE ENQ are disabled 5 When the printing finishes turn off the printer and change DIP switch 2 2 to OFF 6 Turn on the printer and then the hexadecimal mode is off 2 2 5 The self Test Mode The self test checks whether the printer has any problem If the printer does not function properly contact your dealer The self test checks the following 29 sure paper roll has been installed properly 2 Turn on the printer power while holding down the FEED button so that the self test begins 3 The self test prints the current printer status which provides the control ROM version and the DIP switch setting 4 After printing the current printer status self test printing will print the following and pause The PAPER OUT and ERROR LED s light blinks Please press the button 5 Press the FEED button to continue printing The printer prints a pattern using the built in character set
80. tion to move the Head unit to L side 2 Insert the thickness gauge between Head unit and Appropriate gap 0 50 0 60mm Platen then rotate the Ad Level L and adjust the gap Frame Main In order to make the gap narrow wide turn Ad Lever to mark Platen 3 lt tu Head Printer 3 Move the Head unit then check if the proper gap from R side center has been achieved If Head gap is not proper adjust Head gap by 4 rotating Ad Lever R bl a is not correct repeat once Replacement of Head unit Follow below steps for replacing Head unit 1 Loosen the Ribbon frame 2 Disassemble the Head unit from the Head Carriage and take out the Head FPC from the connector of PCB Assv 4 Replace the Head unit and assemble according to the order of sub Aassv 1 5 After assembling adjust the gap as above Adjustment indicates 6 Assemble the Ribbon Frame Rev 3 02 85
81. utput CA 5 Output head 2 20 Output CB 6 Input head com 24V 21 Input Vcc 5V 7 Input head com 24V 22 Input Vcc 5V 8 Input head com 24V 23 Input paper feed control sig 9 Output head 3 24 Output PA 10 Output head 5 25 Output PB 11 Output head 1 26 Output home send output 12 Output head 7 27 Output paper end output 13 Output thermistor 28 Input 24V 14 Output ground 29 Input sol 24V 15 Output ground 30 Output sol 8 6 4 2 Connector 14pin Connector Head control Model Mechanism side GF120 14S Ls LG cable co P N In or Out Description 1 Output thermistor 2 Input thermistor 3 Output head 7 4 Output head 1 5 Output head 5 6 Output head 3 7 Input com 24V 8 Input com 24V 9 Input com 24V 10 Output head 2 11 Output head 9 12 Output head 4 13 Output head 8 14 Output head 6 Rev 3 02 73 SRP 270 8 7 Disassembly To disassemble this printer perform the assembly procedures described in section 8 8 Assembly in the reverse sequence First the main assembly blocks are disassembled and divided into the sub assembly blocks then each of the individual blocks is disassembled Disassembling printer components beyond the example shown in exploded view of SMP 710 710N at the PPL may result in damage to the printer and its functions so you are advised not to do so 8 8 Assembly The assembly process is divided into the sub as
82. with both hands 2 When trans porting this printer never grasp it by Ribbon cassette case PCB Connector and Solenoid Assy or other such parts 3 Never expose the printer to impact by dropping or striking it 4 Take special care that no foreign matter contacts the PCB at the bottom of the printer MANUAL CUTTER MANUAL SCREW HEAD COVER KNOB GEAR STEP MOTOR RIBBON CASSETTE AD LEVER FRAME MAIN CONNETOR 8 2 1 2 Precautions on storage 1 Avoid storage in locations exposed to excessive dirt or dust direct sunlight or excessive moisture 2 In case of long term storage place the printer into a polyethylene bag after wrapping it in anti rust paper then store it in a dry location Rev 3 02 61 SRP 270 8 2 1 3 Precautions on use 1 Since this printer employs magnetic substance Motor Solenoid avoid using it in locations exposed to excessive iron filings dirt dust or other foreign particles 2 Never perform a printing operation without the paper and ribbon installed 3 The printer must be installed on a level surface 4 When installing this printer be sure to us e a buffer of rubber or other similar material between the mounting brackets of the printer and the printer itself to prevent vibrations caused by printing or paper feeding and to avoid increased reverberations 5 For the mounting holes of the printer be sure to us e the round or oblong hol

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