TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manua 1.3 Rear View 1. Ethernet interface 2. USB interface 3. Centronics interface 4. RS-232C interface 5. Power jack socket 6. Power switch 7. Fan-fold paper entrance chute...
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 2. ELECTRONICS 2.1 Summary of Board Connectors Main board Connector Description Remark Power switch Power supply output (24V DC) connector RS-232C connector Centronics port connector USB connector Ethernet connector...
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Print head connector JP12_1 & JP12_2 (TTP-343C) Print head connector JP30_1 & JP30_2 (TTP-245C / 244CE) Micro processor 5V DC connector JP22 Buzzer (Factory option) RTC battery (Factory option) SD card slot Motor temp.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Peel-off sensor connector JP19 Description Voltage Reserved Emitter on : 2.1~2.3V Peel sensor emitter Emitter off: 2.6~2.8V Peel sensor receiver AD 0~3.3V Head open sensor connector JP16 Description Voltage Power 3.3V 0~1.4V: Head close Head open sensor receiver 1.7~3.3V: Head open...
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Main board bottom Connector Description Remark Firmware recover card connector JP37...
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 2.2 Pin Configuration RS-232C CONFIGURATION +5 V CONFIGURATION Centronics SPP Mode Nibble In/Out Function A low on this line indicates that there are valid data at the host. When this pin is de-asserted, the +ve...
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual direction, it functions as PtrBusy. Paper Out / When low, device acknowledges reverse request. Select Extensibility flag Ground Ground No Defined 16-17 Ground Ground No Defined 19-30 Ground Ground No Defined A low set by the device indicates that the reverse...
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3. MECHANISM Please turn off the power switch and unplug the power adapter before replacing parts. 3.1 Replacing Top Cover and Media View Window Cover 1. Turn the printer upside down and use the Phillips screwdriver to remove the 4 screws from hinge holder.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Screws Screws 5. Disconnect the harness from the feed button PC board. 6. Remove/Replace the top cover and media view window cover. Media view window Top cover cover 7. Reassemble the parts in the reverse procedure.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.2 Replacing the Lower Cover 1. Turn the printer upside down and use the Phillips screwdriver to remove the 6 screws. Screws Screws 2. Remove/Replace the lower cover. 3. Reassemble the parts in the reverse procedure.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.3 Replacing the Main Board 1. Refer to section 3.2 to remove the lower cover. 2. Remove 1 screw from the main board. Screws 3. Disconnect all connectors from the main board.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.4 Replacing the Platen Roller Assembly 1. Open the printer top cover by pulling the green tabs located on each side towards the front of the printer, then lift the top cover to the maximum open angle.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.5 Replacing the Print Head Assembly 1. Open the printer top cover by pulling the top cover open levers located on each side towards the front of the printer, then lift the top cover to the maximum open angle. Open the ribbon access cover.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 5. Remove the print head harness cover. Print head harness cover 6. Connect the print head harness and carefully insert the print head module spring plate into the ribbon base print head spring plate slot.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.6 Replacing the Stepping Motor 1. Refer to section 3.2 to remove the lower cover. 2. Disconnect the stepping motor connector from the main board. Stepping motor Stepping motor connector 3. Use the Phillips screwdriver to remove the 2 screws.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.7 Replacing the Feed Button and Feed Button PCB 1. Refer to section 3.1 to remove the top cover. Top cover 2. Remove the screws that fixe the feed PCB to the mechanism.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.8 Peel-off Module Installation (Option) 1. Refer to section 3.2 to remove the lower cover. 2. Open the top cover and pull up the front panel from the printer. Thread the 5-pin peel-off module harness through the front slot of lower inner cover.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Tenon 5. Then, put back the lower inner cover. 6. Close the top cover and then upside down the printer. 7. Fasten the 6 screws at the lower inner cover. 8. Open the peel-off cover. Disengage one of platen holder tab from lower inner cover and rotate the tab 90 degrees to install the peel-off bar into the both slots.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 3.9 Cutter Module Installation (Option) 1. Refer to section 3.2 to remove the lower cover. 2. Open the top cover and pull up the front panel from the printer. Front panel 3. Thread the cutter module 8-pin harness through the front slot of lower inner cover.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 8-pin socket Cutter module 5. Then, put back the lower inner cover. 6. Place the cutter module into the both sides notches of lower inner cover as picture below, then push cutter to lock into the lower inner cover.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 4. TROUBLESHOOTING The following guide lists the most common problems that might be encountered when operating this bar code printer. If the printer still does not function after all suggested solutions have been invoked, please contact the Customer Service Department of your purchased reseller or distributor for assistance.
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 4.2 Print Quality Problem Possible Cause Recovery Procedure Check if interface cable is well Re-connect cable to interface. connected to the interface connector. The serial port cable pin configuration is Please replace the cable with pin to pin not pin to pin connected.
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Check if print density is set properly. Adjust the print density and print speed. Check print head test pattern if head Run printer self-test and check the print element is damaged. head test pattern if there is dot missing...
TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual 5. MAINTENANCE This session presents the clean tools and methods to maintain your printer. 1. Please use one of following material to clean the printer. Cotton swab (Head cleaner pen) ...
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TTP-245C/ TTP-343C/ TTP-244CE Bar Code Printer Service Manual Sensor Compressed air or vacuum Monthly Wipe it with water-dampened As needed Exterior cloth Interior Brush or vacuum As needed Note: Do not touch printer head by hand. If you touch it careless, please use ethanol to clean it.
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