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

 

 

5.2 Trouble Shooting 

 

Problems 

Solutions 

1. Ribbon does not advance. 
 

Check the printing mode setting and reset the 
printer. 

2. Poor print quality. 
 

Clean the print head. 
Adjust the print density setting. 

3. Only prints diagonal pattern in the self-test. 
 

Ribbon and paper are incompatible. Use a 
different type of ribbon. 

4. Power indicator light does not illuminate. 
 

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 message will 
be printed out on the print media or sent out 
through RS-232 port. 
 
If there is no problem with direct thermal 
printing, but error occurs in thermal transfer 
printing. Please check the encoder of the DC 
motor. 

 

Summary of Contents for TTP 243 Plus

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

Page 2: ...s of Paper 9 2 2 Specifications 9 2 3 Ribbon Sizes and Shapes 11 3 ELECTRONICS 12 3 1 Circuit Description 12 3 2 MCU Pin Description 14 3 3 Reset Circuit 16 3 4 Memory System 16 3 5 Sensor Key 17 3 6...

Page 3: ...ric Replacement 36 4 6 Stepping Motor Replacement 38 4 7 Black Mark Sensor Gap Sensor Receiver Replacement 39 4 8 Ribbon Sensor Receiver Replacement 39 4 9 Ribbon Sensor Transmitter Gap Sensor Transmi...

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 modu...

Page 5: ...Plus 342 Plus Bar Code Printer 1 3 Overview 1 3 1 Front View Fig 1 1 Front View Note The one difference between TTP model and TDP model is the ribbon mechanism Front Panel Cover Release Button Top Co...

Page 6: ...3 TTP 243 Plus 243E Plus 342 Plus Bar Code Printer 1 3 2 Rear View Fig 1 2 Rear view DC Power Jack RS 232 Interface Centronics Interface Label Entrance External Mount Use Power Switch...

Page 7: ...l Time Clock 243 Plus only Comes with self peeling function 243 Plus only Buzzer provided to warn of possible errors 243 Plus only Label stock and thermal transfer ribbon are easy to install Internal...

Page 8: ...243 Plus 243E Plus 342 Plus 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...

Page 9: ...mm 2284mm Label Ticket Width 25mm 103mm Effective Print Width 23mm 101mm No Print Area 1mm 1 6 Available Bar Codes Code 39 Code 93 Code 128 UCC Code 128 Subsets A B and C Codabar Interleaved 2 of 5 EA...

Page 10: ...rint 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...

Page 11: ...ere 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 m...

Page 12: ...iameter 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 quo...

Page 13: ...10 TTP 243 Plus 243E Plus 342 Plus 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 cor...

Page 15: ...Fig 3 1 MCU Circuit Diagram The above is the MCU circuit diagram The main board includes seven system blocks A MCU Decode System B Memory System C Motor System stepping motor DC motor and cutter block...

Page 16: ...Plus Bar Code Printer G Power System The figure below shows the PCB system area Motor System Communication Port Real Time Clock Memory Decoder System Print Head Cutter System Memory System External M...

Page 17: ...SL PB4 O CASH CASH PB5 O RDWR RDWR PB6 O A18 A18 PB7 O A19 A19 PB8 O A20 A20 PB9 O A21 A21 PC0 PC15 O A0 A15 A0 A15 PD0 PD15 I O D0 D15 D0 D15 PE0 O PWM Enable TIOC0A GAP LEVEL PE1 I Pull Up PE1 KEY3...

Page 18: ...P SENS NMI I Pull Up NMI No use RESETP I Pull Up Active RESETP RESET WDTOVF O WDTOVF No use IRQ0 NO USE IRQ1 NO USE IRQ2 POWER DOWN IRQ3 USB_INT IRQ4 NO USE IRQ5 NO USE IRQ6 NO USE IRQ7 NO USE Other d...

Page 19: ...cuit This is the reset circuit The TS809CXA IC outputs the system reset signal of LOW when the driving voltage is lower than 4 63V Typical U31 NO use 3 4 Memory System Fig 3 4 FLASH ROMS and DRAM Diag...

Page 20: ...s HIGH P4 is the connector which connects to the block mark sensor The block mark sensor is a reflect in sensor the block mark sensor signal voltage is HIGH when the block mark is detected otherwise i...

Page 21: ...18 TTP 243 Plus 243E Plus 342 Plus Bar Code Printer 3 6 Real Time Clock Circuit Fig 3 6 Real Time Clock Circuit HT1381 is serial time Keeper...

Page 22: ...19 TTP 243 Plus 243E Plus 342 Plus Bar Code Printer 3 7 Decode Circuit...

Page 23: ...F Download ROM 0800 0000 09F FFFF DRAM 0100 0000 011F FFFF Other Map Address Bit Function 00C0 0000 MOTOR DATA 0 PHASE1 1 PHASE2 2 I0 3 I1 4 CT EN 5 DC PHASE 6 TPH EN 7 BUZZER 00D0 0000 USB 0 USB_D0 1...

Page 24: ...AT connected to thermal head control clock and data latch respectively TPH_EN controls the DC24V voltage of the thermal head When TPH_EN is LOW the thermal head will be separated from 24V VMM STB1 STB...

Page 25: ...rcuit Fig 3 10 24V 5V Converter Circuit Figure 3 9 is the DC TO DC DC24V to DC 5V converter circuit which is a step down system circuit structure U24 is the DC TO DC converter IC which can convert vol...

Page 26: ...attern is shown in table2 PHASE1 and PHASE2 determine the pattern of stepping motor drive circuit For example the sequence of PHASE1 PHASE2 in full step mode is 0 0 0 1 1 1 1 0 Step Pin on JP12 1 2 3...

Page 27: ...ceive pin of MCU CTS is the Clear To Send of MCU which sends the signal from the external device TxD is the data output pin of MCU RTS is the Request To Send signal which MCU sends to the external dev...

Page 28: ...e printer is turned on CT_EN controls the activation of the cutter The cutter is activated when CUTTER signal is low The sensor of cutter sends the Hi Lo signal to MCU through CT_SENS that detects the...

Page 29: ...wer 2 Remove the power cord and RS 232 and or parallel port cable 3 Open the top cover of the printer 4 Remove the printer front panel Fig 3 14 Remove the front cover in the direction of the arrows 5...

Page 30: ...el off sensor connector Fig 3 16 Cable tie and peel off sensor connector 7 Remove the screws on the lower left and lower right corners of main mechanism Fig 3 17 Remove the screws in the lower left lo...

Page 31: ...bel 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 Fig 3 19 Ta...

Page 32: ...eel off sensor connector JP4 Black mark sensor connector JP5 Gap ribbon transmit sensor connector JP6 DC motor and encoder connector JP7 TPH head up switch connector JP8 Memory cartridge connector JP9...

Page 33: ...s not work please check that the software or program has been switched to the cutter mode If the cutter still does not function please check the cutter driver IC make sure it is firmly inserted in the...

Page 34: ...e cable tie and remove the peel off sensor connector Cf Fig 3 16 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 F...

Page 35: ...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 Fig 4 2 The Print Head Scre...

Page 36: ...key 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...

Page 37: ...the internal label roll mount and remove connector JP1 Cf Fig 3 19 12 Remove the screw of ground wire on the mainboard 13 Remove all connectors on the mainboard 14 Take out the mechanism 15 Remove th...

Page 38: ...e encoder is in condition Otherwise please follow the steps below to replace the encoder PCB 1 Follow directions in Section 4 3 to remove DC motor and DC motor fixture Fig 4 5 DC Motor Encoder 2 Remov...

Page 39: ...t printing quality Follow the steps below to replace the felt fabric 1 Follow the instructions in Section 4 3 to remove DC motor and DC motor fixture 2 Remove the E ring and washer on ribbon supply sp...

Page 40: ...37 TTP 243 Plus 243E Plus 342 Plus Bar Code Printer 6 Reassemble the removed parts in the reverse order of removal Fig 4 8 Front View of the Ribbon Supply Spindle...

Page 41: ...rews in the lower left lower right corners of the main mechanism Cf Fig 3 17 9 Remove all four screws of the internal label roll mount Cf Fig 3 18 10 Move the mechanism in the label feed direction abo...

Page 42: ...se the cable tie and remove the peel off sensor connector Cf Fig 3 16 7 Remove the screw on the PCB of peel off and cutter connector 8 Remove the screws in the lower left lower right corners of the ma...

Page 43: ...Fig 3 17 9 Remove all four screws of the internal label roll mount Cf Fig 3 18 10 Move the mechanism in the label feed direction about 5 mm 11 Take out the internal label roll mount and remove the con...

Page 44: ...shape The right side spring has a straight end when the left side spring has an end that is curved 90 degrees 16 The main mechanism is divided into upper mechanism and lower mechanism 17 The ribbon s...

Page 45: ...in Section 4 6 to separate the upper mechanism from the lower mechanism 2 The ribbon sensor transmitter is located in the center of the lower mechanism Fig 4 14 Ribbon Sensor Transmitter 3 Remove the...

Page 46: ...ur screws of the internal label roll mount Cf Fig 3 18 10 Move the mechanism in the label feed direction about 5 mm 11 Take out the internal label roll mount and remove the connector Cf Fig 3 19 12 Re...

Page 47: ...se lever arm and E ring 19 Remove the teflon tube and stripper rod Fig 4 18 20 Remove the E ring the right side and left side platen bushes Fig 4 19 21 Remove the stripper bar Fig 4 17 Printer Carriag...

Page 48: ...ig 4 18 Teflon tube and stripper rod Fig 4 19 Remove E ring and platen bush 22 Move the platen to the right of the mechanism 23 Replace the platen and reassemble the removed parts in the reverse order...

Page 49: ...at of the label Download Error The format of the downloaded file is incorrect There is not enough memory to store the file Stack Overflow Program contains too complex mathematical expressions Divide i...

Page 50: ...heck 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 indicat...

Page 51: ...e label length Print internal settings Initiate self test Enter dump mode 5 5 Ram Clear Press the PAUSE and FEED button simultaneously for more than 3 seconds The printer will clear the memory and res...

Page 52: ...red 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 complie...

Page 53: ...ed voltage should be 0 Vdc The black line sensor is normal if the checking complies with the two cases above Or else the black line sensor is out of order E Checking Peel Off Sensor Switch the multime...

Page 54: ...rinthead to cool for a minimum of one minute 2 Open the printer cover 3 Open the printer carriage by pulling up the release lever to the left of the front rubber roller 4 Remove the ribbon and label 5...

Page 55: ...tand Alone Keyboard Display Unit part no Camille 2007 3 1 1 Modify the 4 11 item 1 10 Main board ass y from 98 0180157 30LF 31LF 32LF to 98 0180157 40LF 41LF 42LF Camille 2007 3 9 1 Modify the 4 11 it...

Page 56: ...t 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...

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