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TTP-268M/ TTP-366M
Bar Code Printer Service Manua

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3.2 Replacing the LCD Panel Module

1. Refer to section 3.1 to remove the electronics cover.

2. Disconnect harness from the LCD panel module.

3. Push two tabs to remove/replace the LCD panel module.

4. Remove 5 screws to replace LCD panel PCB ASS'Y and LCD panel ASS'Y.

5. Reassemble the parts in the reverse procedures.

LCD panel
module

PUSH

PUSH

Harness

LCD panel PCB assembly

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Summary of Contents for TTP-268M

Page 1: ...TTP 268M TTP 366M SERVICE MANUAL THERMAL TRANSFER DIRECT THERMAL BAR CODE PRINTER ...

Page 2: ... 5 Replacing the Main Board 17 3 6 Replacing the Platen Roller Assembly 18 3 7 Replacing the Stepping Motor 19 3 8 Replacing the Print head ASS Y 20 3 9 Replacing the Gap and Black mark Sensor Module 22 3 10 Replacing the DC Motor Module 23 3 11 Peel off Kit Installation Option 24 3 12 Cutter Module Installation Option 31 4 TROUBLESHOOTING 33 4 1 Common Problems 33 4 2 Print Head Pressure Adjustme...

Page 3: ...inter Service Manual 1 FUNDAMENTAL OF THE SYSTEM 1 1 Overview Front View 1 LED indicators 2 LCD display 3 Front panel buttons 4 Paper exit chute 5 Lower front cover 6 Media view window 7 Printer right side cover opener 1 2 3 4 7 5 6 ...

Page 4: ...justment knob 4 Ribbon guide bar 5 Z axis mechanism adjustment knob 6 Print head release lever 7 Media guide bar 8 Label roll guard 9 Label supply spindle 10 Internal rewind spindle Optional 11 Damper 12 Print head 13 Ribbon sensor 14 Platen roller 15 Gap sensor 16 Black mark sensor 17 Label guide 5 9 7 10 6 11 4 3 1 2 14 13 17 15 16 12 8 ...

Page 5: ...slot Up to 4G 8 Internal Ethernet interface 10 100 Mbps 9 PS 2 keyboard interface 10 Power switch Note The interface picture here is for reference only Please refer to the product specification for the interfaces availability Recommended SD card specification SD card spec SD card capacity Approved SD card manufacturer V1 0 V1 1 128 MB SanDisk Transcend V1 0 V1 1 256 MB SanDisk Transcend Panasonic ...

Page 6: ...d Panasonic V2 0 SDHC CLASS 4 microSD 4 GB Panasonic V2 0 SDHC CLASS 6 microSD 4 GB Transcend V1 0 V1 1 miniSD 128 MB Transcend Panasonic V1 0 V1 1 miniSD 256 MB Transcend Panasonic V1 0 V1 1 miniSD 512 MB Transcend Panasonic V1 0 V1 1 miniSD 1 GB Transcend Panasonic V2 0 SDHC CLASS 4 miniSD 4 GB Transcend V2 0 SDHC CLASS 6 miniSD 4 GB The DOS FAT file system is supported for the SD card Folders f...

Page 7: ... Board Connectors Main board Connector Description 1 Centronics port connector 2 USB connector 3 RS 232C connector 4 LCD panel connector 5 Multi interface board connector GPIO interface board 6 Micro processor 7 RFID module connector 1 2 3 4 5 6 7 9 13 8 11 12 14 17 18 19 10 15 16 20 ...

Page 8: ...tter on 4 3 4 4V Emitter off 3 Black mark sensor emitter 4 0 4 1V Emitter on 4 3 4 4V Emitter off 4 Gap sensor receiver A D 0 3 3V 5 GND 0V 10 Black mark sensor connector Pin Description Voltage 1 Black mark sensor receiver A D 0 3 3V 2 Power 5V 3 GND 0V 4 Black mark sensor emitter 4 0 4 1V Emitter on 4 3 4 4V Emitter off 11 Ribbon sensor connector Pin Description Voltage 1 Ribbon sensor receiver ...

Page 9: ...ensor emitter 4 0 4 1V Emitter on 4 3 4 4V Emitter off 6 Logic power 5V 7 GND 0V 8 Cutter power 24V 13 Rewind module connector Pin Description Voltage 1 Rewind motor power 24V 2 Rewind signal 3 3V 3 Rewind enable 3 3V 4 Rewind sensor receiver A D 0 3 3V 5 GND 0V 14 Stepping motor connector 15 Motor connector for ribbon rewind spindle Pin Description Voltage 1 Logic power 5V 2 DC motor sensor recei...

Page 10: ...V 4 Motor signal A Motor power 5 Motor signal B Motor power 17 Power supply output 24V DC connector 18 GPIO interface power 24V DC connector 19 Print head signal connector 20 Print head power connector Multi interface board Connector Description Remark 1 Main board connector 2 SD card slot 3 Ethernet RJ 45 connector 4 PS 2 connector 1 3 2 4 ...

Page 11: ...ar Code Printer Service Manual GPIO with multi interface board Connector Description Remark 1 GPIO connector 2 Main board connector 3 SD card slot 4 Ethernet RJ 45 connector 5 PS 2 connector 6 GPIO power connector 2 1 4 3 5 6 ...

Page 12: ...FIGURATION 1 N C 2 D 3 D 4 GND Centronics Pin SPP Mode Nibble In Out 1 Strobe N A In 2 9 Data 0 7 N A In 10 Ack N A Out 11 Busy N A Out 12 Paper Out End N A Out 13 Select N A Out 14 Ground N A GND 15 No Defined N A N A 16 17 Ground N A GND 18 No Defined N A N A 19 30 Ground N A GND 31 No Defined N A N A 32 Error Fault N A Out 33 35 Ground N A GND 36 No Defined N A N A ...

Page 13: ...1 11 TTP 268M TTP 366M Bar Code Printer Service Manual Ethernet PIN CONFIGURATION 1 Tx 2 Tx 3 Rx 4 N C 5 N C 6 Rx 7 N C 8 N C PS 2 PIN CONFIGURATION 1 KBD Clock 2 GND 3 KBD Data 4 N C 5 5V VCC 6 N C GPIO ...

Page 14: ...ar Code Printer Service Manual 3 MECHANISM 3 1Remove Covers 1 Remove 4 screws from printer 2 Open printer right side cover and remove 2 screws then close the cover 3 Remove the electronics cover Screws Screws Electronics cover ...

Page 15: ...inter Service Manual 4 Remove 3 screws from each hinge Be careful the right side cover may fall out from the printer Take out the right side cover from the printer 5 Reassemble the parts in the reverse procedures Screws Right side cover ...

Page 16: ... 1 to remove the electronics cover 2 Disconnect harness from the LCD panel module 3 Push two tabs to remove replace the LCD panel module 4 Remove 5 screws to replace LCD panel PCB ASS Y and LCD panel ASS Y 5 Reassemble the parts in the reverse procedures LCD panel module PUSH PUSH Harness LCD panel PCB assembly ...

Page 17: ...section 3 1 to remove the electronics cover 2 Disconnect 2 connectors and remove 2 screws on the power supply unit Note For new power supply unit as shown below it need to change new DC cable 10PIN on PSU 8PIN on PCB 3 Replace the power supply unit 4 Reassemble the parts in the reverse procedures Screws ...

Page 18: ...on 3 1 to remove the electronics cover 2 Remove 4 screws then take off the interface plate 3 Remove 2 screws from multi interface board 4 Replace the multi interface board 5 Reassemble the parts in the reverse procedures Screws Interface plate Screws Connector Multi interface board Copper pillar Copper pillar ...

Page 19: ...ain Board 1 Refer to section 3 1 and 3 4 to remove electronics cover and multi interface board 2 Disconnect all connectors from the main board 3 Remove 2 copper pillars and 2 screws 4 Replace the main board 5 Reassemble the parts in the reverse procedures Copper pillars Screws ...

Page 20: ...over 2 Disengage print head lift lever 3 Remove the 1 screw to remove gear cover 4 Remove 4 screws from the platen holder 5 Take out the platen holder platen roller assembly and replace a new platen roller assembly 6 Reassemble the parts in the reverse procedures Screws Platen roller assembly Holder Screws Screws Gear cover ...

Page 21: ...tor 1 Refer to section 3 1 to remove the electronics cover 2 Disconnect the stepping motor connector from the main board 3 Remove 3 screws and 1 fixed tie on the stepping motor 4 Replace the stepping motor 5 Reassemble the parts in the reverse procedures Stepping motor connector Screws ...

Page 22: ...8 Replacing the Print head ASS Y 1 Open the printer right side cover 2 Remove 2 screws from the mechanism 3 Disengage print head release lever 4 Carefully disconnect 2 connectors from the print head ASS Y 5 Replace the print head ASS Y Screws Print head ASS Y ...

Page 23: ...nual 6 Connect the print head cable and carefully slide assembly into the print mechanism The holes of print head assembly must align and then insert the tenons of print mechanism 7 Reassemble the parts in the reverse procedures Print head ASS Y Tenons ...

Page 24: ... 3 4 to remove electronics cover and multi interface board 4 Disconnect the gap and black mark sensor connectors from the main board 5 Remove 1 screw to take off the sensor cover from print head mechanism 6 Replace the sensor module Black mark sensor module Gap sensor module 7 Reassemble the parts in the reverse procedures Black mark sensor module connector Gap sensor module connector Screws Senso...

Page 25: ... section 3 1 to remove the electronics cover 2 Disconnect the DC motor module connector from the main board 3 Remove 4 screws from DC motor fixed plate 4 Replace the DC motor module Including ribbon near end senor 5 Reassemble the parts in the reverse procedures DC motor module connector Screws Screws ...

Page 26: ...s list 1 Internal rewinder spindle 2 Harness for DC motor control board 3 Peel off cover Including peel off sensor assembly 4 Screw 1 5 Gear 6 Pillar 7 Screw 2 8 Copper pillar 9 Screw 3 10 DC motor control board assembly 11 DC motor kit Including DC motor and sensor assembly 12 Screw 4 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 27: ...emove 3 screws and 1 connector to remove the DC motor assembly DC motor fixing plate 3 Open the right side printer cover Remove the dustproof cover from internal rewinder spindle reserve hole 4 Install the pillar to the printer Please refer to the above fig Use wrench No 7 to fasten the pillar Screws Connector Blue ...

Page 28: ...nual 5 Remove 2 screws from the internal rewinder spindle 6 Separate the internal rewinder spindle and shaft as above picture 7 Put the bearing into the internal rewinder shaft hole Left side 8 Insert the gear shaft into the internal rewinder shaft hole ...

Page 29: ... to the shaft and fasten the screw Note The spindle screw hole must be in alignment with the screw hole on rewinder shaft 11 Rotate the spindle 180 degree and fasten the other screw at the internal rewinder spindle 12 Use the screw 2 to fasten the gear into the pillar by slotted screwdriver Note Turn the gear to confirm that it works with internal rewinder gear ...

Page 30: ...ting protrusions on the motor into the locating holes on the fixing plate Make sure the protrusions at lower position of locating holes 15 Use 4 screws 4 to fix the DC motor and sensor board on the plate Use 2 screws 3 to fix the DC motor control board on the copper pillars Plug the DC motor kit harness into the DC motor control board ...

Page 31: ...asten the DC motor plate to the printer mechanism Plug the DC motor control board harness into the DC motor control board White connector 17 Remove 4 screws to take off the printer interface plate 18 Remove 2 screws from multi interface board to remove the multi interface board ...

Page 32: ...parts in the reverse procedures 20 Remove 2 screws to take off the lower front panel 21 Plug the peel off mini DIN cable connector into the peel off cutter connector and place the cable in the cable cavity The triangle mark on the connector must be at the upper side 22 Fasten 2 screws 1 at the peel off module to fix the peel off module to the printer mechanism ...

Page 33: ... 1 Open the printer right side cover 2 Remove 2 screws to remove the lower front panel 3 Plug the cutter mini DIN cable connector into the cutter peel off connector The triangle mark on the connector must be at the upper side 4 Use 2 screws to lock the cutter fixing plate onto the front printer ...

Page 34: ... 366M Bar Code Printer Service Manual 5 Place the cutter module into the cutter fixing plate Please refer to the following fig 6 Fasten the 1 screw at the cutter bracket to fix the cutter module to the printer mechanism ...

Page 35: ...bbon is installed incorrectly Supply a new ribbon roll Please refer to the steps in user s manual to reinstall the ribbon No Paper Running out of label The label is installed incorrectly Gap black mark sensor is not calibrated Supply a new label roll Please refer to the steps in user s manual to reinstall the label roll Calibrate the gap black mark sensor Paper Jam Gap black mark sensor is not set...

Page 36: ...ith printheat Turn off the printer and plug the connector again Check if the stepping motor is plugging in the right connector Check your program if there is a command PRINT at the end of the file and there must have CRLF at the end of each command line Memory full FLASH DRAM The space of FLASH DRAM is full Delete unused files in the FLASH DRAM The max numbers of file of DRAM is 256 files The max ...

Page 37: ...screw counter clockwise to get the best print quality The release lever does not latch the printhead properly LCD panel is dark and keys are not working The cable between main PCB and LCD panel is loose Check if the cable between main PCB and LCD is secured or not LCD panel is dark but the LEDs are light The printer initialization is unsuccessful Turn OFF and ON the printer again Initialize the pr...

Page 38: ...board is plugged in the right connector Power and Error LEDs are blinking fast Power switch OFF and ON too fast Turn off the printer and wait all LEDs are dark and turn on the printer again Wrinkle Problem Printhead pressure is incorrect Ribbon installation is incorrect Media installation is incorrect Print density is incorrect Media feeding is incorrect Make sure the label guide touch the edge of...

Page 39: ... pressure For example if the label width is 6 adjust both print head pressure adjustment knobs to the same level If the label is less than 2 wide increase the left side print head pressure by rotating the adjustment knob clockwise and decrease the right side pressure by rotating the adjustment knob counter clockwise to level 1 If the left side print head adjustment knob setting has been set to 5 t...

Page 40: ...ing application Ribbon wrinkle is related to the media thickness print head pressure balance ribbon film characteristics print darkness setting etc In case the ribbon wrinkle happens please follow the instructions below to adjust the printer parts Adjustable Printer Parts Symptom 1 Wrinkle happens from label lower left to upper right direction ˊ 2 Wrinkle happens from label lower right to upper le...

Page 41: ... 1 3 1 1 4 1 1 5 1 1 5 2 1 5 3 1 5 4 1 5 5 1 3 label Left index Middle index Right index 2 2 1 3 3 1 4 4 1 5 5 1 Adjust the print head pressure adjustment knob The print head pressure adjustment knob has 5 levels of settings Clockwise direction adjustment is to increase the print head pressure Counter Clockwise adjustment can decrease the print head pressure If the wrinkle on the label starts from...

Page 42: ...justment knob is used to fine tune the right side pressure of print head Before fine tune the print head right side pressure please set the pressure adjustment knob to index 1 then use use the Z axis adjustment knob to fine tune the right side print head pressure Please refer to the adjustment steps as below 1 Loosen the fixing nut to the top of knob Move the nut only Factory default Loosen the nu...

Page 43: ...ror Rotate the Z axis mechanism adjustment knob clockwise for a few degrees by screwdriver and print again to check if the ribbon wrinkle remains If the wrinkle still remains please turn the Z axis mechanism adjustment knob clockwise about 1 4 circle each time for adjustment Marker position Factory default position In Z axis mechanism adjustment knob function position ...

Page 44: ...42 42 TTP 268M TTP 366M Bar Code Printer Service Manual 4 Screw the fixing nut and fixing screw for fixed this print head pressure Fixing nut Fixing screw ...

Page 45: ... Printer Part Method Interval Print Head 1 Always turn off the printer before cleaning the print head 2 Allow the print head to cool for a minimum of one minute 3 Use a cotton swab Head cleaner pen and 100 ethanol to clean the print head surface Clean the print head when changing a new label roll Platen Roller 1 Turn the power off 2 Rotate the platen roller and wipe it thoroughly with 100 ethanol ...

Page 46: ...or vacuum As needed Note Do not touch printer head by hand If you touch it careless please use ethanol to clean it Please use 100 Ethenol DO NOT use medical alcohol which may damage the printer head Regularly clean the print head and supply sensors once change a new ribbon to keep printer performance and extend printer life ...

Page 47: ...45 45 TTP 268M TTP 366M Bar Code Printer Service Manual UPDATE HISTORY Date Content Editor 2015 4 7 Modify section 3 3 Replacing the power supply unit Camille ...

Page 48: ......

Page 49: ...g 1st 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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