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TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer

4.10 Ribbon Sensor (Transmitter) / Gap Sensor (Transmitter) Replacement

1. Follow the instructions in Section 4.1 to remove all the connectors on mainboard.

2. The ribbon sensor (transmitter) is located in the center of the lower mechanism.

Ribbon Sensor (Transmitter)

3. Remove the two flat tap screws.

4. Remove the cable tie and sensor PCB.

5. Replace with a new PCB. Reassemble the removed parts in the reverse order of removal.

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Summary of Contents for TTP 243 Pro

Page 1: ...TTP 243 Pro 243E Pro 342 Pro TTP TDP 244 342 TTP TDP 244 Service Manual THERMAL TRANSFER DIRECT THERMAL BAR CODE PRINTER ...

Page 2: ...fications 9 2 3 Ribbon Sizes and Shapes 11 3 ELECTRONICS 12 3 1 Summary of Board Connectors 12 3 2 Pin Configuration 14 4 MECHANISM 16 4 1 Mainboard Replacement 16 4 2 Cutter Installation Option Not available for TTP 243E Pro model 20 4 3 Print Head Replacement 21 4 4 DC Motor Replacement 23 4 5 Ribbon Rewind Spindle Encoder Replacement 24 4 6 Felt Fabric Replacement 25 4 7 Stepping Motor Replacem...

Page 3: ...e Printer 4 11 Platen Replacement 32 5 TROUBLE SHOOTING 35 5 1 Trouble Shooting 35 5 2 Calibrate the Gap Register 36 5 3 Self test 36 5 4 Ram Clear 36 5 5 Diagnosis Operation Procedure 36 5 6 Testing Sensors 37 5 7 Cleaning the Print Head 38 ...

Page 4: ...o a personal computer or an optional LCD keyboard to execute the programs downloaded in the printer s memory The printer is equipped with the following standard devices black mark sensor peel off module and real time clock 4 This bar code printer provides a selection of optional features including cutter module memory module portable LCD keyboard etc 5 The user friendly labeling software package i...

Page 5: ...rinter 1 3 Overview 1 3 1 Front View 1 Cover Release Button 2 PWR ON LINE and ERR Indicators 3 PAUSE Button 4 FEED Button 5 Label Dispense Opening 6 Liner Opening For use with peel off function Not available for 243E series printer 3 4 2 1 5 6 ...

Page 6: ...e Printer 1 3 2 Rear View 1 Power On Off Switch 2 Power Supply DC Jacket 3 RS 232C Interface Connector 4 USB Interface Connector 5 Label Insert Opening For use with external media 6 Centronics Interface Connector Factory option 1 2 3 4 5 6 ...

Page 7: ...labels or tickets Equipped with black mark sensor Equipped with Real Time Clock Not available for TTP 243E Pro Comes with self peeling function Not available for TTP 243E Pro Buzzer provided to warn of possible errors Not available for TTP 243E Pro Label stock and thermal transfer ribbon are easy to install Internal label print counter Self test and hex dump mode Downloadable fonts from label desi...

Page 8: ...TTP 243 Pro 243E Pro 342 Pro Bar Code Printer Host Function 9 Pin 25 Pin 9 Pin Printer Function 1 5V RxD 2 3 2 TxD TxD 3 2 3 RxD DTR 4 20 4 DSR GND 5 7 5 GND DSR 6 6 6 RDY RTS 7 4 7 N C CTS 8 5 8 RDY 9 5V ...

Page 9: ... Width 25mm 103mm Effective Print Width 23mm 101mm No Print Area 1mm 1 6 Available Bar Codes 1D bar code Code 39 Code 93 Code128UCC Code128 subsets A B C Codabar Interleave 2 of 5 EAN 8 EAN 13 EAN 128 UPC A UPC E EAN and UPC 2 5 digits add on MSI PLESSEY POSTNET RSS Stacked RSS14 Code 11 China Post 2D bar code PDF 417 Maxicode DataMatrix QR code Aztec ...

Page 10: ...int position of the next label The sensor is mounted 4 mm off the center line of the main mechanism In case of Label Black Mark Sensor The black mark sensor locates the position of label by emitting infrared rays onto the black mark at the back of the ticket The sensor is mounted 5 75 mm off the center line of the ticket roll width on the mechanism ...

Page 11: ...re can be only one position for the sensor Once the sensor position is agreed upon it can not be changed afterwards Ribbon End Sensor The sensor detects the end portion of the ribbon The ribbon end must be transparent Label End Sensor The sensor detects the end portion of the label Peel off Sensor The sensor detects the backing paper of a label Ribbon encoder The encoder is used to detect if the r...

Page 12: ...ameter 1 core Inner roll diameter Max 4 3 110mm External roll diameter Max 8 4 214mm Roll Up Method Print surface wound outside as standard Paper Core ID 25 7 0 3mm Note 1 The width and thickness quoted above are said of the label plus its backing paper 2 Likewise the approval of label entails that of its backing paper 3 In the peel off mode the minimum pitch is 35mm 4 In the cutter mode it is req...

Page 13: ...10 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer ...

Page 14: ...film 335 5mm long End tape Polyester film transparent 250 5mm long Max ribbon OD 67mm Winding method Ink surface to be wound outside Note The maximum length of ribbon depends on its thickness and core outside diameter The formula below defines the correlation between ribbon roll length and ribbon core diameter t 4 d D L 2 2 where L Ribbon length D Max roll diameter d Ribbon core outside diameter t...

Page 15: ... Connectors Main board Connector Description Remark 1 Ribbon sensor connector JP18 2 Black mark sensor connector JP46 Pin Description Voltage 1 Power 5V 2 Black mark sensor receiver No paper or black mark 3 1 3 2V Detect paper 0 0 3V 3 GND 0V 1 2 3 9 7 12 8 4 10 13 5 14 11 6 15 16 17 ...

Page 16: ... switch SW2 10 Power supply output 24V DC connector B3 11 RS 232C connector JP7 12 Centronics port connector Option JP4 13 USB connector JP9 14 Push button connector JP52 Pin Description Voltage 1 LED green PWR LED light on 2 0 2 2V LED light off 0 0 3V 2 LED green ONLINE LED light on 2 0 2 2V LED light off 0 0 3V 3 LED red ERR LED light on 2 0 2 2V LED light off 0 0 3V 4 Pause switch 0V Push key ...

Page 17: ...al 10 Ack N A Out A low on this line indicates that there are valid data at the Device When this pin is de asserted the ve clock edge should be used to shift the data into the host 11 Busy N A Out When in reverse direction a high indicates data while a low indicates a command cycle In forward direction it functions as PtrBusy 12 Paper Out End N A Out When low device acknowledges reverse request 13...

Page 18: ...15 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer 33 35 Ground N A GND Ground 36 No Defined N A N A ...

Page 19: ... off the printer power 2 Remove the power cord and RS 232 and or USB cable 3 Open the top cover of the printer 4 Remove the printer front panel Remove the front cover in the direction of the arrows 5 Remove the two screws and the metal cover Remove the screws and metal cover Screws Metal Cover ...

Page 20: ...sor connector Not available for TTP 243E Pro model Cable tie and peel off sensor connector 7 Remove the screws on the lower left and lower right corners of main mechanism Remove the screws in the lower left lower right corners of the main mechanism Cable Tie Peel Off Sensor Connector Cutter Connector ...

Page 21: ...l label roll mount Fig 3 18 Remove screws of the label roll mount 9 Move the mechanism about 5 mm in the label feed direction 10 Take out the internal label roll mount and remove the connector Take out the internal label roll mount and remove the connector Ground Wire Push Button Connector ...

Page 22: ...nboard 12 Remove all connectors on the mainboard 13 Take out the mechanism 14 Remove the rest three screws on the mainboard Upper Left Upper Right Lower Right Corner Screw 15 Replace the mainboard 16 Reassemble the mechanism and internal label roll mount in the reverse procedures of the removal ...

Page 23: ... section 5 Release the cable tie and remove the peel off sensor connector Cf 4 1 section 6 Remove the peel off sensor connector 7 Plug in the cutter connector 8 Insert the right and left side flange of cutter into the slot Cutter Installation 9 Fasten the cutter from the bottom of the printer with the provided screw 10 Make sure no screws or other parts are left in the printer 11 Reassemble the me...

Page 24: ...e RS 232 cable and power cord 3 Open the top cover 4 Remove the ribbon and label roll 5 Open the print carriage 6 Remove the screw at the top front center of the mechanism as shown The Print Head Screw 7 Disconnect the print head cable Printhead and the Cable Print Head Connector Key of the Connector Print Head Cable ...

Page 25: ...ey of connector must be positioned upward Do not touch the elements of the print head Do not disassemble the print head 8 Tidy up the cable so that it does not protrude or interfere with the ribbon 9 Reassemble the removed parts in the reverse order of removal ...

Page 26: ...4 1 section 9 Remove all four screws of the internal label roll mount Cf 4 1 section 10 Move the mechanism in the label feed direction about 5 mm 11 Take out the internal label roll mount and remove connector JP52 Cf 4 1 section 12 Remove the screw of ground wire on the mainboard 13 Remove all connectors on the mainboard 14 Take out the mechanism 15 Remove the cable tie 16 Remove the three screws ...

Page 27: ...witch the printer to thermal transfer mode The multi meter is used to measure the voltage of Pin2 5V If the voltage changes continuously from 0 to 5 volts DC the encoder is in condition Otherwise please follow the steps below to replace the encoder PCB 1 Follow directions in Section 4 4 to remove DC motor and DC motor fixture DC Motor Encoder 2 Remove the two flat tap screws and cable tie 3 Replac...

Page 28: ... the best printing quality Follow the steps below to replace the felt fabric 1 Follow the instructions in Section 4 4 to remove DC motor and DC motor fixture 2 Remove the E ring and washer on ribbon supply spindle Components of the Ribbon Supply Spindle 3 Remove the spring cover compression spring and spring holder 4 Remove the spring felt clutch and felt fabric 5 Replace with a new felt Side View...

Page 29: ...26 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer 6 Reassemble the removed parts in the reverse order of removal Front View of the Ribbon Supply Spindle ...

Page 30: ...placement 1 Follow the instructions in Section 4 1 to remove all the connectors on mainboard 2 Take out the mechanism 3 Remove the two screws of the stepping motor Stepping Motor 4 Replace the stepping motor and reassemble the removed parts in the reverse order of removal ...

Page 31: ...efore conducting the test please issue the BLINE command first The printer will switch from gap sensor to black mark sensor If there is no voltage variation please follow steps below to replace the black mark sensor gap sensor receiver PCB 1 Follow the instructions in Section 4 1 to remove all the connectors on mainboard 2 Take out the mechanism 3 Remove one flat tap screws and black mark sensor P...

Page 32: ...ism Spring Installation on Left Side and Right Side Note The left side spring and the right side spring are different in shape The right side spring has a straight end when the left side spring has an end that is curved 90 degrees 4 The main mechanism is divided into upper mechanism and lower mechanism 5 The ribbon sensor receiver is located in the upper mechanism 6 Remove the screws on the ribbon...

Page 33: ...30 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer 7 Replace with a new ribbon sensor PCB Ribbon Sensor 8 Reassemble the removed parts in the reverse order of removal ...

Page 34: ...nstructions in Section 4 1 to remove all the connectors on mainboard 2 The ribbon sensor transmitter is located in the center of the lower mechanism Ribbon Sensor Transmitter 3 Remove the two flat tap screws 4 Remove the cable tie and sensor PCB 5 Replace with a new PCB Reassemble the removed parts in the reverse order of removal ...

Page 35: ...move the E ring and two gears Location of E ring and Gears 3 Remove the E ring and the printer carriage release lever on the left side of the mechanism 4 Remove the E ring and the printer carriage release lever arm Printer carriage release lever and E ring Printer Carriage Release Lever E Ring Thermal Head Bracket Thermal Head Gear 1 E Ring Gear 2 Printer Carriage Release lever arm ...

Page 36: ... teflon tube and stripper rod Teflon tube and stripper rod 6 Remove the E ring the right side and left side platen bushes 7 Remove the stripper bar Remove E ring and platen bush Teflon Tube E Ring Teflon Tube Printer Carriage Release Lever Arm Stripper Bar Platen Bush Right Side E Ring Platen Bush Left Side ...

Page 37: ...34 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer 8 Move the platen to the right of the mechanism 9 Replace the platen and reassemble the removed parts in the reverse order of removal ...

Page 38: ...uminate Check the connection of serial port cable 5 On line indicator light does not to illuminate Check the DIP switch setting and reset the printer Check that power cord is properly connected 6 Error indicator remains illuminated Out of paper or out of ribbon Check the DIP switch setting Check the paper core make sure it is installed on the ribbon rewind spindle Press the FEED key The error mess...

Page 39: ...e label length Print internal settings Initiate self test Enter dump mode 5 4 Ram Clear Press the PAUSE and FEED button simultaneously for more than 3 seconds The printer will clear the memory and reset the printer Be sure to calibrate the gap register with blank label before printing 5 5 Diagnosis Operation Procedure When the power is turned on without any button pressed self diagnosis is perform...

Page 40: ...PIN4 of U35 1 When gap of the gear box is detected by the DC motor encoder sensor the measured voltage should be 5 Vdc 2 When gap of the gear box is not detected by the DC motor encoder sensor the measured voltage should be 0 Vdc The DC motor encoder sensor is normal if the checking complies with the two cases above Or else the DC motor encoder sensor is out of order C Checking Black Line Sensor S...

Page 41: ...nthead to cool for a minimum of one minute 1 Open the printer cover 2 Open the printer carriage by pulling up the release lever to the left of the front rubber roller 3 Remove the ribbon and label 4 Clean the print head element with a head cleaner pen or use a cotton swab and 100 ethanol to clean the print head surface Note Do not touch printer head by hand If you touch it careless please use etha...

Page 42: ...39 TTP 243 Pro 243E Pro 342 Pro Bar Code Printer Update History Date Content Editor 2011 1 25 Modify TSC address Camille 2011 4 7 Modify section 3 2 Camille ...

Page 43: ...st Rd Wujie Township New Taipei City 23141 Taiwan R O C Yilan County 26841 Taiwan R O C TEL 886 2 2218 6789 TEL 886 3 990 6677 FAX 886 2 2218 5678 FAX 886 3 990 5577 Web site www tscprinters com E mail printer_sales tscprinters com tech_support tscprinters com TSC Auto ID Technology Co Ltd ...

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