BIXOLON SRP-270 manual

Service Manual SRP-270 Imp act Printer Rev . 3.02 http://www .samsungminiprinters.com[...]

Rev. 3.02 - 2 - SRP-270 ■ Table of Contents 1. Precaution Segment .......................................................................................................... .......................... 6 1-1 Safety Pr ecautions ......................................................................................................... ................[...]

Rev. 3.02 - 3 - SRP-270 4. Hard ware .................................................................................................................................................... 29 4-1 Wiring Diagram ...................................................................................................................................... 29 4-2 [...]

Rev. 3.02 - 4 - SRP-270 8-2 Handling t he Prin ter ............................................................................................................................... 61 8-2-1 Precautions on Printer Handling .......................................................................................... ........... 61 8-2-2 Paper Setting Proc[...]

Rev. 3.02 - 5 - SRP-270 ■ About About this Manual This Service Manual describes how to perform hardw are service maintenance for the BIXOLON SRP-270 Receipt Printer. Notes Notes may appear any where in the manual. Th ey draw your attention to additional info rmation about the item. Precaution symbols Indicates a Safety Precaution that applies to [...]

Rev. 3.02 - 6 - SRP-270 1. Precaution Segment Follow these safety , servici ng and ESD precautions to prevent damage an 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 reinst alling the chassis[...]

Rev. 3.02 - 7 - SRP-270 1-2 Servicing Precaution WARNING 1: First read the Safet y Precauti on sec tion of this manual. If some unforeseen circumstance creates a conflict bet ween the servicing and safety precautions, always follow the safety precaution. WARNING 2: An electrolytic capacitor insta lled with the wrong polarity might explode. 1. Alway[...]

Rev. 3.02 - 8 - SRP-270 1-3 Precaution for Electrost atically Sensitive Devices (ESDs) 1. Some semiconductor (solid state) devi ces are eas ily damaged by static electricity. Such compone nts are called Electrostatically Sensitive Devices (ESDs); ex amples include integrated circuits and some field- effect transistors. The following te chniques wil[...]

Rev. 3.02 - 9 - SRP-270 2. Inst allation and Operation 2-1 Inst allation 2-1-1 AC Adapter Installation 2-1-2 Interface Cable Installation 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 electrica[...]

Rev. 3.02 - 10 - SRP-270 2-1-5 Paper Roll Installation 1. Using a new roll paper , unr oll 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 S pool Winding to Lower Case. 5. Setting Auto Cutter , then put first [...]

Rev. 3.02 - 11 - SRP-270 2-2 Operation 2-2-1 Setting the DIP s w itches The DIP switches are located on the bottom of the printer . The DIP switches are us ed to set the printer to perform various functions. Follow these when changing DIP switches setting : 1. T urn the printer power switch off. 2. Remove the screw on the bottom of the printer and [...]

Rev. 3.02 - 12 - SRP-270 2-2-3 Setting the DIP s w itch (IEEE1284 Parallel, USB Interface ) • DIP Switch 1 SW FUNCTION ON OFF DEF AUL T 1 OFF 2 Emulation Selection Refer to the following T abl e 1 OFF 3 Auto-Cutter Enable Disable OFF 4 FONT SP ACE 2 3 OFF 5 - 6 - 7 Function for Service Engineer OFF 8 Korean T ype Selection Unified Complete OFF ?[...]

Rev. 3.02 - 13 - SRP-270 2-2-4 Hexadecimal Dumping This feature allows experience d users to see exactly what data is coming to the printer . This can be useful in finding software problem s. When you turn on the hexadec imal dump function, the printer print s all commands and data in h exadecimal format along with a guide section the help you find[...]

Rev. 3.02 - 14 - SRP-270 (A) Serial Self-T est Sheet (B) Parallel Self-T est Sheet[...]

Rev. 3.02 - 15 - SRP-270 (A) Serial Self-T est Sheet (B) Parallel Self-T est Sheet[...]

Rev. 3.02 - 16 - SRP-270 3. Product S pecifications 3-1 Appearance 3-1-1 Printer Dimensions (mm) Figure 3-1 Printer Dimension 3-1-2 AC Adapter Dimensions (mm) Figure 3-2 Adapter Dimension[...]

Rev. 3.02 - 17 - SRP-270 3-1-3 Feature Locations Figure 3-3 Feature Location 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 (Se rial I/F Connector) 9b.IEEE-1284(Parallel I/F Connector) 9c.USB(USB I/F Connector) 10. Drawer Kick-Out Connector 1 1. DC Power Jack[...]

Rev. 3.02 - 18 - SRP-270 3-2 General S pecifications Item Description Remark Product • SRP-270 : RS-232 Serial Communication • SRP-270S : RS-485 Serial Communication • SRP-270P : IEEE1284 Parallel Communication • SRP-270U : USB Communication Processor • MITSUBISHI M16C/62 Group M30622 SFP (16 Bit) Internal RAM Size : 3K Byte External ROM [...]

Rev. 3.02 - 19 - SRP-270 3-3-2 Character Speci fication Item Description Remark H 0.3175 mm Dot Interval V 0.3528 mm Font T ype ASCII Chinese Print Font 9 x 9 7 x 9 16 x 16 Printing Columns 33 40 - Character Size (mm) 3.2 x 1.7 3.2 x 1.4 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[...]

Rev. 3.02 - 20 - SRP-270 3-3-4 Printer Head Specification Item Description Remark Model • DH400-G10 S pecification • T ype: Ballistic T ype (Free Fight) • Number of Wire: 9Pin Solenoid Coil • Resistance: 10W ± 15% • Inductance: 4.5mH ± 1 5% (Open Circuit) • T emperature Rate: 155 Deg.C • Insulation Resi stance: 10MW Driver Circuit ?[...]

Rev. 3.02 - 21 - SRP-270 3-3-9 Ribbon Cassette Sp ecification Item Description Remark S tandard • ERC-38 (Black / Red) Color • Black & Red Size • 13 mm (W) x 6 mm (L) Life • ERC-38 (B/P): 1,500,000 Characters (Black) 750,000 Character (Red) (Continuous Printing 7 x 9 Font / ASCII / 25 ) ℃ 3-3-10 Other Component Specification Item Desc[...]

Rev. 3.02 - 22 - SRP-270 3-5 Interface S pecifications 3-5-1 RS-232 C Serial Interface 3-5-1(a) Spe cification Item Description Remark Data T ransmission • Serial Synchronization • Asynchronous HandShak ing (Flow Control) • H/W : DTR / DSR • S/W : XON / XOFF XON: ASC Code 1 1h XOFF: ASC Code 13h Signal Level • Logic”1” (MARK) : -3V ~ [...]

Rev. 3.02 - 23 - SRP-270 3-5-1(c) Cable Connection Figure 3-7 RS-232C Cable Con nection 3-5-1(d) Signal Description Pin No. Signal name Direction Function 1 FG - Frame Ground 2 TxD Output T ransmit Data 3 RxD Input Receive Data 4 RTS Output Ready T o Send 5 CTS Input Clear T o Send 6 DSR Input This signal indicates whether the ho st computer can re[...]

Rev. 3.02 - 24 - SRP-270 3-5-1(f) S/W Flow Control When XON/XOFF flow control is selected, the printer transmit s XON(ACSII 1 1h) or XOFF(ASCII 13h) signal through the T XD line. If the Printer is BUSY , the Prin ter transmits XOFF(AS CII 13h) to host through the TXD line. Then the host re cognize that the Printer is BUSY . So, the host does not tr[...]

Rev. 3.02 - 25 - SRP-270 3-5-2(d) Signal Description Pin No. Signal name Direction Function 1 Frame GND - Frame Groun d 2 SD2 Output 3 SD1 Output Send Data ”H” : SD1 > SD2 , “L” : SD1 < SD2 4 RD2 Input 5 RD1 Input Receive Dat a ”H” : RD1 > RD 2 (RD1-RD2 ≥ 0.2V) “L” : RD1 < RD2 (RD1-RD2 ≤ 0.2V) 7 SGND - Signal Ground [...]

Rev. 3.02 - 26 - SRP-270 3-5-3(b) Reverse Mode S pecification (Nibble / Byte mode) Data transmi ssion from the printer to the host computer . The ST A TUS data transmission fro m the printer to the host computer is accomplished in the Nibble or Byte mode. Thi s mode allows dat a transmission from the asynchronou s printer under the cont rol of the [...]

Rev. 3.02 - 27 - SRP-270 3-5-4 USB2.0 Interfa ce SRP-270 support the USB (Unive rsal Serial Bus) Serial Communication. 3-5-4(a) Spe cification Item Description Remark T ransfer T ype • BUL K Data Signal • Bi-direction, Half-Duplex • Differential Signal Pair (D+ / D-) Data Form at • NRZI Format • Zero Bit Stuffing after 6 ones T ransceiver[...]

Rev. 3.02 - 28 - SRP-270 3-6 Cash Drawer S pecifications 3-6-1 Cash Drawer Cable 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 Drawe r Driver Signal #1 Output 3 Drawer Open / Close Signal Input 4 +24V - 5 Cash Drawe r Driver Signal #2 Outpu[...]

Rev. 3.02 - 29 - SRP-270 4. Hardware 4-1 Wiring Diagram [Figure 4-1 Board Wiri ng Diagram][...]

Rev. 3.02 - 30 - SRP-270 4-2 Block Diagram [Figure 4-2 Block Diagram][...]

Rev. 3.02 - 31 - SRP-270 4-3 S pecial Circuit Descriptions 4-3-1 Power Circuit This system is operated un der 1 10V ac or 230V ac. The power circuit supplies the three dif ferential DC volt age sources. [Figure 4-3 Power Block Di agram] 1) Drawer Driv ing and Feed, Auto Cutter Motor V olt age : +24Vdc +24VDC is supplied from SMPS. This V oltage is [...]

Rev. 3.02 - 32 - SRP-270 4-3-2 RESET Circuit Reset signal is a signal in o rder to start-u p CPU under Power-on. Re set circuit uses a reset ICTL770 5ACD (U5). When +5Vdc is fallen under 4.3V dc by Power-of f, reset signal prohibit s the system from misoperating by lowering down to 0V . [Figure 4-4 Reset Block Diagram] [Figure 4-5 Reset W aveform] [...]

Rev. 3.02 - 33 - SRP-270 4-3-3 Cash Drawer Circuits The circuit is used for open ing cash drawer and driv en by the Q8 (ST A471). When its st ate is high level signal, Q8 (ST A471) drive the solenoid to open the cash drawer . As an optional it em, we provide sensor switch (we call it a compulsory switch ) which checks the drawer whether it is ope n[...]

Rev. 3.02 - 34 - SRP-270 4-3-4 I/F PBA Detect Block Diagr am When the printer is ON, the printer ch ecks what kind of the I/F PBA is install ed. After detection, the CPU specify the I/O port properly . The followi ng 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 [...]

Rev. 3.02 - 35 - SRP-270 4-3-5 RS-232C Communi cation Block Diagram The CPU is used for se rial communication. And also RS-232C Driver (MAX232), is use d to serial communication. Show following block diagram. [Figure 4-8 RS-232C Communication Block Dia gram] [Figure 4-9 RS-232C Communication W aveform] M30622SFP[...]

Rev. 3.02 - 36 - SRP-270 4-3-6 RS-485 Communica tion Block Diagram The CPU is used for se rial communication. And also RS-485 Driver (MAX488), is used to se rial communication. Show following block diagram. [Figure 4-10 RS-485 Communication Bl ock Diagram] [Figure 4-1 1 RS-485 Communication W aveform] M30622SFP[...]

Rev. 3.02 - 37 - SRP-270 4-3-7 Parallel Communication Block Diagram The printer support the bidirectional Parallel In terface with Centroni cs, Nibble, Byte Mode. The Centronics i s Forward and the Nibble, Byte are reverse Mode. [Figure 4-10 IEEE1284 Communi cation Block Diagram] 4-3-8 USB Communication Block Diagram The printer support the USB (Un[...]

Rev. 3.02 - 38 - SRP-270 4-3-9 DIP Switch Circuit The key Board Circuit consist of the scan signal of 4 lines and the return si gnal of 4-line. The CPU sends repeatedly and continuousl y 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 DI P S/W is ON S tatus during the given tim[...]

Rev. 3.02 - 39 - SRP-270 5. Disassembly and Assembly 5-1 General Precautions on Disassembly This chapter describe s the Disassembly and Re assembly procedures for the Pri nter of SRP-270 Series. This Printer contains ele ctronically sensitive device. Use caution when handling any componen t. Whenever servicing the m achine, you must perform as foll[...]

Rev. 3.02 - 40 - SRP-270 5-3 Cover Assy (SRP-270D T ype) 1. Open the Cover Assy and take out the S pool Winding, as shown below . 2. Push the locking lib to the direction of arrow and remove the Cover Assy , as shown below . 5-4 Cover Assy (SRP-270A & SRP-270C T ype) 1. Open the Cover Assy . 2. Pull the Cover Assy upward and remove it.[...]

Rev. 3.02 - 41 - SRP-270 5-5 Case Upper Assy (SRP-270A & SRP-270C T ype) 1. Open the cover Assy . 3. Separate the Case Upp er from the Case Lower . 2. Remove four screws.[...]

Rev. 3.02 - 42 - SRP-270 5-6 Case Upper Assy (SRP-270D T ype) 1. Push the locking lib to the direction of arrow and remove the Cover Assy , as shown below . 2. Remove four screws securing the Case Upper . Separate the Ca se Upper from the Case Lower . 5-7 Printer Assy (SRP-270A & SRP-270C T ype) 1. Before you disassembly the Printer Assy , you [...]

Rev. 3.02 - 43 - SRP-270 5-8 Printer Assy (SRP-270D T ype) 1. Before you disassembly the Printer Assy , you should remove : - Plate Bottom (see Chapter 4-2) - Cover Assy (see Chapter 4-3 & 4-4) - Case Upper Assy (see Chapter 4-6) 2. Remove the S pool Gear and Belt, as shown below .(SRP-270D T ype) 3. Remove two screws securing the Prin ter Assy[...]

Rev. 3.02 - 44 - SRP-270 5-10 Main PCB 1. Before you disassembly the Main PCB, you should remove : - Plate Bottom (see Chapter 4-2) - Cover Assy (see Chapter 4-3 & 4-4) - Case Upper Assy (see Chapter 4-6) - Printer Assy (see Chapter 4-7 & 4-8) 2. Remove four screws securing the Main PCB. Separate the Main PCB from the Main Frame. 5-1 1 Inte[...]

Rev. 3.02 - 45 - SRP-270 6. Alignment and Adjustment s 6-1 Printer Adjustment When assembling this printer, be sure to refer to the requi red adjustment procedure. To ensure normal operation of the printer after disasse mbly or repl acement of a Component for maintenan ce or repair. Be sure to perform along to the require d method. * Adjustment of [...]

Rev. 3.02 - 46 - SRP-270 7. T roubleshooting 7-1 Power Problem • Check the Power Out on SMPS. • Check the Fuse. • Check the related Pattern. • Check the IC34063. 7-2 System Problem • Check the Reset p art (IC & Pattern) • Check the Clock on FS741 (14.7456MHz) • Check the Adr/Data line Pattern 7-3 Printer Problem • Check the Feed[...]

Rev. 3.02 - 47 - SRP-270 7-8 IEEE 1284 Problem • Check the Control Line (CS3, WR, RD). • Check the 1284 Control Line and S tatus Line. • Check the Signal of ICs (U3, U6, U5) • Check the related Circuit and Pattern on I/F PBA. • Check the 1284 Control, S tatus Data L ine. 7-9 USB Problem • Check the Control Line & Signal. (CS3, RD, W[...]

Rev. 3.02 - 48 - SRP-270 8. Appendix (Spec of SMP-710/710N) 8-1 S pecifications 8-1-1 Printing specifications Item Description Printing method serial imp art dot-matrix Head wire configuration 9-pin serial type Dot pitch 0.352mm(1/72") Dot wire diameter 0.3mm(0.01") Printing direction Bidirectional with logic se eking Printing width 63.5m[...]

Rev. 3.02 - 49 - SRP-270 8-1-2 Character spe cifications 8-1-2-1 Character set s Item Description Alphanumeric 95 International 32 Graphics 128×7 pages 8-1-2-2 Character structu re * 7×9 with 400 half-dot positions per line. * 9×9 with 400 half-dot positions per line. Charac ter struc ture Horizontal × Vertical Charac ter structure Characte r S[...]

Rev. 3.02 - 50 - SRP-270 8-1-3 Paper specifications Item Description Paper types Paper roll: Platen paper or pressure-sen sitive paper Paper roll wid th 76±0.5mm (2.99±0.20") Paper roll maximum diameter Ø83mm(3.27") Paper roll core Unless there is an optional near-end detector , you cannot use a paper roll with the core and p aper glue[...]

Rev. 3.02 - 51 - SRP-270 8-1-4 Ribbon Cassette sp ecifications Compatible Model Color Ribbon life ("1) ERC-38 (B) Black 3 million characters {w ith continuous printing at 25 (77°F)} ℃ ERC-38 (B/R) Black and Red Black: 1.5million characters {with continuous printing at 25 (77°F)} ℃ Red: 750,000 characters {with continuous pri nting at 25 [...]

Rev. 3.02 - 52 - SRP-270 8-1-6 Reliability Item Description MCBF This is an average failure interval based on fa ilures relating to wear out and random failure s up to the life of 18 million lines. 8-1-7 Main Unit specifications Item Description T ype 4-phase, 48-polarity , PM-type stepping motor Drive voltage 24 VDC±10% Winding resist ance 10 Ω[...]

Rev. 3.02 - 53 - SRP-270 8-1-8 Electrical specifications 8-1-8-1 The e xplanations of the circuit operations 1) Head Carriage S tep Motor - It rotates and moves the Dot Head by usin g the several gears an d synchronous belt - Print S peed : 4.6 Line/Sec - This step m otor is control by const ant current method. So, current flows two red line of ste[...]

Rev. 3.02 - 54 - SRP-270 8-1-10 Principle of Movement 8-1-10-1 Head Feeding Mecha nism This printer is using DC24V PM T ype S tepping motor . As shown in figure the motor section co nsists of the motor . Motor speed control IC, motor drive/brake circuit and motor speed interface. When the carriage motor is driven and the carriage moto r gear is mov[...]

Rev. 3.02 - 55 - SRP-270 8-1-10-2 Printing Mechani sm When the specified print head drive pul se is input to the drive coil, the iron core is magnetize d, and the actuating plate is pulled in the dire ction of arrow A. This action pushed the wire toward the platen, When the wire strike s the ink ribbon and pap er against the platen(*), a single dot[...]

Rev. 3.02 - 56 - SRP-270 8-1-10-4 Home Position Detection Me chanism The home position detection mech anism consist s of t he detection protrusion at the left side of the carriage sub assembly and the sensor su b assembly at the le ft side of the base frame. It determines the home position, identifies the carri age position, and detects carriage su[...]

Rev. 3.02 - 57 - SRP-270 8-1-10-5 Paper Feeding Paper feeding is performed by conveying the pape r f eed motor` s rotational power from the paper feed m otor gear through the paper fee d reduction gear, paper fe ed gear, and paper fed roller. Since the paper feed roller and paper h old roller are pressed togeth er, paper advances to the top of the [...]

Rev. 3.02 - 58 - SRP-270 8-1-10-6 Ribbon feedin g When the carriage motor rot ate s cou nter clockwise and the carriage motor g ear rotates in the direction of arrow A, the Gear Reduction B' Gear Redu ction A Gear Reduction B, rotate in the directions of arrows B, and C, B' respectively. This causes the Lever Ribbon Fee der Assy to move i[...]

Rev. 3.02 - 59 - SRP-270 * Ribbon shifting operation Ribbon shifting action is as follows. As the Carriage Motor rotates clo ckwise, Head carria ge Assy moves from left to right. Whe n you'd like to change from red color to black col or you should shift Head carri age Assy as shows in figure timing cha rt. Delivers to Gear HF-1, and turns to d[...]

Rev. 3.02 - 60 - SRP-270 [ Description of T iming chart.2 ] When head carriage step motor sto ps(lef t → ⑬ left) The st art position of head carria ge step motor from right to left ⑭ When fir ⑮ st outing of head pin from right to lef t When last outing of head pin from right to lef t and when sta rting line feed ⓐ When ending of printing [...]

Rev. 3.02 - 61 - 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 h andlin g method is to support both side of Frame main with both hands. 2) When trans porting this printer. never grasp it by Ribbon cassette ca se, PCB Connector , and Solenoid [...]

Rev. 3.02 - 62 - SRP-270 8-2-1-3 Precautions on use 1) Since this printer employs magneti c substance (Mot or, Solenoid), avoid using it in locations exposed to excessive iron filings, dirt, dust or other foreign p articles. 2) Never perform a printing operatio n without the paper and ri bbon installed. 3) The printer must be installed on a level s[...]

Rev. 3.02 - 63 - SRP-270 8-2-2-2 Precautions on Pap er 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 in to the paper entra nce section. 3) The end of the paper wh ich is crinkled and ben ded, should not be inserted. 4) Make sure that the rol[...]

Rev. 3.02 - 64 - SRP-270 8-2-3 Ribbon Cassette Installation The Ribbon Cassette use must conform to the standards prescribe d in the Specifications. Never use non-standa rd types, because such use may resu lt in such trouble as the malfunctio n of printing quality. 8-2-3-1 Ribbon Cassette Installation Procedure for installing the Ribbon Cassette as[...]

Rev. 3.02 - 65 - SRP-270 8-3 Maintenance To ensure the maintenance of this prin ter at its initial performance level throug hout a long product life as well as preventing potential troubles, be sure to perform maintenance and managem ent according to the points described in the following subsectio ns. 8-3-1 Cleaning Eliminating dirt or strains 1) W[...]

Rev. 3.02 - 66 - SRP-270 8-4 Lubricant s and Adhesive Appli cation Lubrication and application adhe sive plays an important role in maintaining thi s printer at its initial performance level, throughout a long pro duct life as we ll as preventing potential troubles. Make sure to apply the specified lubricants or a dhesive in the appropriate amounts[...]

Rev. 3.02 - 67 - SRP-270 8-5 Tools, Lubricants and Adhesives 8-5-1 List of Tools No Tool Designation Availability 1 2 3 4 5 6 7 8 9 10 11 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 O O O O O O O O O O O 8-5-2 List of Lubrican[...]

Rev. 3.02 - 68 - SRP-270 8-6-3 Repair Guidelines Phenomenon Condition Cause Level Check point & Method Repair Method ① Defective power input to motor B ·Check the input power ·Check the input voltage (24V±2V) between the motor terminals of the connector using a tester or oscilloscope ·Inspect and repair the power supply circuit ② Defect[...]

Rev. 3.02 - 69 - SRP-270 Phenomenon Condition Cause Level Check point & Method Repair Method Defective ⑤ input charge pulse B ·Observe by oscilloscope to check if the input charge pulse is within rated values ·Pulse rating: For voltage and pulse width refer to the specifications for SMP-710/710N ·If input pulse is not generated or if such [...]

Rev. 3.02 - 70 - SRP-270 Phenomenon Condition Cause Level Check point & Method Repair Method Wear or ① damage of Lead Cam or the gear A ·Check the teeth of each gear and of the Lead Cam for wear and damage ·If worn or damaged, replace the defective gear or the Lead Cam 5. Intermittently defective charac ter width Intermittent changes in cha[...]

Rev. 3.02 - 71 - SRP-270 Phenomenon Condition Cause Level Check point & Method Repair Method Defective ① paper supply A See cause of phenomenon 1 ① Deformation ② of the Spring Roller B See cause of phenomenon 1 ⑦ Wear of the ③ Rubber Roller B See cause of phenomenon 1 ⑥ The Shaft ④ Roller rotates malfunction B See cause of phenome[...]

Rev. 3.02 - 72 - SRP-270 Phenomenon Condition Cause Level Check point & Method Repair Method Entry of ① solenoid is cut B ·Measure resistant value between terminal of solenoid resistance: S ome 70±10% (25 ) ℃ ·In case cutting substitute solenoid 12. No working of Solenoid Gear tooth ② cam, ratchet and ribbon frame get dusted or altered[...]

Rev. 3.02 - 73 - SRP-270 8-6-4 Assignment Connector Pin 8-6-4-1 Connector 30pin * Connector: Head, head carri age/paper feed step motor, solenoid P/E senso r, 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[...]

Rev. 3.02 - 74 - SRP-270 8-7 Disassembly To disassemble this printer, perfo rm the assembly procedures described in section 8-8 Asse mbly in the reverse sequence. First, the main assembly blocks are disasse mbled and divided into the sub-assembly blocks, then each of the individual blocks is disassembled. Disassembling printer com ponents beyond th[...]

Rev. 3.02 - 75 - SRP-270 8-8-1 Sub-assemblies 8-8-1-1 Carriage Head Assy Name of Parts Method and Procedure Drawings BE ① RIN G FE (2ea) CARRIAGE HEAD ② 1. At first, set the BERIN G FE ① to be inserted into the shaft of JIG. * Notice: The direction of insert is to locate frange downward. 2. And then, set a CARRIAGE HEAD ② to be inserted int[...]

Rev. 3.02 - 76 - SRP-270 8-8-1-4 Lever Tension Belt C Assy Name of Parts Method and Procedure Drawings SHAFT PUL ① LEY LEVER TENSION ② BELT PULLEY ③ WASHER ④ (2.6*5.0*0.5) 1. At first, grease SHAFT PULLEY ① with HG-31S. 2. Next insert PULLEY and then ③ assemble WASHER (2.6*5.0*0.5). ④ <Check Point> Check PULLEY to rotate smoothl[...]

Rev. 3.02 - 77 - SRP-270 8-8-1-7 Bracket PF “R ” Assy Name of Parts Method and Procedure Drawings ① BRACKET P/F “R” ② GEAR PF IDLE ③ GEAR KNOB ④ GEAR KNOB IDLE ⑤ WASHER (1.6*3*0.3) 1. At first, grease the small shaft of BRACKET P/F “R” with EM ① -501. Next, insert GEAR PF IDLE, ② GEAR KNOB, and GEAR ③④ KNOB IDLE. Lastl[...]

Rev. 3.02 - 78 - SRP-270 8-8-2 Main-assemblies 8-8-2-1 Base Paper Feed Assy - #1 Name of Parts Method and Procedure ① BASE PAPER FEED ② SHAFT TAKE UP ③ TAPE CUSION ④ RUBBER PLATE (2EA) ⑤ PLATEN ASSY ⑥ SCREW SPECIAL (M2.6*7.5, 2EA) ⑦ SHAFT RUBBER ROLLER ⑧ ROLLER PAPER GUIDE (2EA) ⑨ BEARING (2EA) ⑩ E-RING (ø3, 2EA) ⑪ GEAR ROLLE[...]

Rev. 3.02 - 79 - SRP-270 8-8-2-2 Base Paper Feed Assy - #2 Name of Parts Method and Procedure ① GEAR TAPE UP ② GEAR TU PULLEY ③ WASHER BELT GUIDE ④ WASHER (2.6*5*0.5) ⑤ BRACKET PF L ⑥ SCREW TAPPING (M3*6, 6EA) ⑦ GUIDE PAPER A ⑧ GUIDE PAPER B 1. Make BASE PAPER FEED stand (left side), and then, insert GEAR TAPE UP to fit SHFAT(D ① [...]

Rev. 3.02 - 80 - SRP-270 8-8-2-3 Base Paper Feed Assy - #3 Name of Parts Method and Procedure ① SUB PCB ASSY ② SCREW TAPPING (M2*3, 2EA) ③ MANUAL CUTTER ④ SCREW (M3*6, 2EA) ⑤ PLATEN PAPER GUIDE ⑥ SHAFT HOLE ROLLER ⑦ HOLE ROLLER (2EA) ⑧ SPRING HOLD ROLLER (2EA) 1. Set SUB PCB ASSY to fit the hole in the bottom face of ① BASE PAPER [...]

Rev. 3.02 - 81 - SRP-270 8-8-2-4 Main assembling - #1 Name of Parts Method and Procedure ① FRAME MAIN C/K ASSY-4 ② SERIAL NO. TAG ③ TAPE INSULATION ④ LEVER COLOR CHANGE ⑤ SOLENOID ASSY ⑥ SPRING SOLENOID ⑦ SCREW MACHINE (M2*3) ⑧ GEAR PULLEY ASSY WASHER (ø2.6*5*0.5) ⑨ LEVER TENTION BELT ASSY ⑩ SCREW (M3*4) ⑪ 1. Set FRAME MAIN C[...]

Rev. 3.02 - 82 - SRP-270 8-8-2-5 Main assembling - #2 Name of Parts Method and Procedure ① GEAR REDUCTION A ② GEAR REDUCTION B ③ RIBBON FEEDER ASSY ④ GEAR REDUCTION “C ” ⑤ LEVER RIBBON FEED ASSY ⑥ WASHER (ø 2.6*5*0.5, 2EA) ⑦ MAIN PCB ASSY ⑧ FPC CONNECTOR ⑨ SCREW MACHINE (M3*4) ⑩ CARRIAGE HEAD ASSY ⑪ BELT SYNCHRONUOS ⑫ S[...]

Rev. 3.02 - 83 - SRP-270 8-8-2-6 Main assembling - #3 Name of Parts Method and Procedure ① AD LEVER ② SHAFT HEAD GUIDE ③ SHAFT HEAD CARRIAGE ④ E-RING (ø 3) ⑤ HEAD PRINT ⑥ SCREW (M3*10, 2EA) ⑦ BRACKET HEAD COVER “L” ⑧ BRACKET HEAD COVER “R” ⑨ SCREW MACHINE (M2.6*3, 2EA) 1. Set FRAME MAIN on the JIG. 2. Insert AD LEVER ① [...]

Rev. 3.02 - 84 - SRP-270 8-8-2-8 Main assembling - #5 Name of Parts Method and Procedure ① RIBBON FRAME ② SPRING RIBBON FRAME ③ E-RING (ø3, 3EA) 1. Insert ⓐ SPRING RIBBON FRAME into the hole in left side of ⓑ RIBBON FRAME to ward arrow on shows in Fig. 1 detail. 2. Set SPRING RIBBON FRAME ⓐ onto the SHAFT ⓒ and then, move the RIBBON [...]

Rev. 3.02 - 85 - SRP-270 8-8-3 Adjustment When assembling this printer, be sure to refer to the requi red adjustment procedure. To ensure normal operation of the printer after disasse mbly or repl acement of a Component for maintenan ce or repair. Be sure to perform along to the require d method. * Adjustment of Head gap Adjustment Step Description[...]