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The Speaker Company TTP 248M TTP-248M Bar Code Printer Service Manual 4.2 Replacing the Mainboard

Models: TTP 248M

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TTP-248M Bar Code Printer

Service Manual

4.2 Replacing the Mainboard

1.Disconnect all harnesses.

2.Remove the seven screws on Mainboard, two hexagon screws of serial port and two screws of parallel port.

Mainboard

Screw	Screw

Screw

Parallel Port

Screw

Serial Port

3.Replace the Mainboard.

4.Reassemble in the reverse procedures.

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Image 46

The Speaker Company TTP 248M service manual TTP-248M Bar Code Printer Service Manual 4.2 Replacing the Mainboard, Screw

Contents

TTP 248M THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER SERVICE MANUALTTP-248M Bar Code Printer Service Manual TABLE OF CONTENT Service Manual TTP-248M Bar Code PrinterPrinter Overview TTP-248M Bar Code Printer Service Manual1. FOUNDAMENTALS ABOUT THE SYSTEM Front ViewEnvironment TTP-248M Bar Code Printer Service Manual 1.2 Pinter SpecificationSpecification ElectricalCommunication Interface TTP-248M Bar Code Printer Service Manual9 Pin 1.3 Available Bar CodesHost 25 PinFont 1.4 Text SpecificationSpecification of Fonts Width x LengthVF1~4 File Head of Font Fixed 32bytesTTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual BF3~4 VF3~4Decode Table 2.1 Types of Paper 2. SUPPLY SPECIFICATIONS2.2 Specification TTP-248M Bar Code Printer Service ManualTTP-248M Bar Code Printer Service Manual 2.3 Ribbon Specification Specification3.1 MCU Fig. 3.1 MCU Circuit Diagram3. CIRCUIT DESCRIPTION TTP-248M Bar Code Printer Service ManualFig. 3.2 System Block of PCB TTP-248M Bar Code Printer Service ManualTTP-248M Bar Code Printer Service Manual 3.2 MCU PIN Description TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual TTP-248M Bar Code Printer Service Manual 3.3 Reset Circuit Fig. 3.3 Reset CircuitG ND J TTP-248M Bar Code Printer Service Manual 3.4 Memory SystemFig. 3.4 Memory System V CCPrivileged mode TTP-248M Bar Code Printer Service Manual 3.5 Decoder Circuits3.6 Memory Address Map USE CPLD to decodeTTP-248M Bar Code Printer Service Manual 0xAC000000 TTP-248M Bar Code Printer Service Manual0xA88FFFFF 0xAC3FFFFFTTP-248M Bar Code Printer Service Manual 3.7 Firmware Address Map Ip k TTP-248M Bar Code Printer Service Manual 3.8 Power Down SensorFig. 3.6 Power Down Sensor Circuit VrefTTP-248M Bar Code Printer Service Manual 3.9 Print HeadFig. 3.7 Print Head ROHM KF2004-GL41B Print Head Sensor RESET PHSTEP TTP-248M Bar Code Printer Service Manual 3.10 Motor System CircuitPHASE INARFig. 3.9 Ribbon Near End Sensor Circuit GAP Sensor TTP-248M Bar Code Printer Service Manual 3.11 Sensor CircuitsRibbon Near End Sensor Black Mark SensorBM E Fig. 3.10 Black mark/ Gap Sensor Circuit Peel-off SensorTTP-248M Bar Code Printer Service Manual GAPEFig. 3.13 Print Head Lift Lever Open Sensor Circuit Ribbon End Sensor Fig. 3.11 Peel-off Sensor Circuit Case SensorFig. 3.12 Case sensor Print Head Lift Lever Open Sensor TTP-248M Bar Code Printer Service ManualFig. 3.15 Serial Port Circuit 3.12 Serial Port CircuitFig. 3.14 Ribbon End Sensor Circuit TTP-248M Bar Code Printer Service ManualTTP-248M Bar Code Printer Service Manual 3.13 Parallel Port CircuitFig. 3.16 Parallel Port Circuit ERRORTTP-248M Bar Code Printer Service Manual 3.14 Cutter Drive System Fig. 3.17 Cutter Drive CircuitFig. 3.18 LTC490 and RS232 pin switch TTP-248M Bar Code Printer Service Manual 3.15 PIN Switch Circuits3.16 Connector Circuits Fig. 3.19 Download boot program to on-board Flash memory pin switchTTP-248M Bar Code Printer Service Manual Fig. 3.21 Memory Card ConnectorFig. 3.22 Cutter Connector Circuit JP33STEPPING MOTOR Fig. 3.23 Stepping Motor ConnectorTTP-248M Bar Code Printer Service Manual OUT110 K TTP-248M Bar Code Printer Service Manual 3.17 Optional Items CircuitsFig. 3. Optional Item---Buzzer BUZZEROTTP-248M Bar Code Printer Service Manual 4. MACHANISM4.1 Remove the Covers and LCD Panel 1. Open Top Right Side Cover3. Loosen the three screws on Top Left Side Cover TTP-248M Bar Code Printer Service Manual4. Remove Top Right Side Cover and Top Left Side Cover TTP-248M Bar Code Printer Service Manual Screw LCD Panel Screw Lower Front CoverTTP-248M Bar Code Printer Service Manual 4.2 Replacing the Mainboard ScrewPower Supply Unit 4.3 Replacing the Power Supply UnitTTP-248M Bar Code Printer Service Manual Two screws ScrewsTTP-248M Bar Code Printer Service Manual 4.4 Replacing the Ribbon Rewind Spindle1. Refer to 4.3 to remove the Power Supply Unit 5. Loosen the three screws on the Cam Spindle Support Plate TTP-248M Bar Code Printer Service Manual4. Remove the E-ring of pulley. And then, remove the pulley Screws7. Reassemble in the reverse procedures after replacing TTP-248M Bar Code Printer Service Manual6. Replace the Ribbon Rewind Spindle 1. Remove the four screws of the Ribbon Supply Spindle 4.5 Replacing Ribbon Supply SpindleTTP-248M Bar Code Printer Service Manual 2. Remove the shaft bearing 3. Replace the Ribbon Supply SpindleTTP-248M Bar Code Printer Service Manual 4. Reassemble in the reverse procedures after replacing1. Refer to 4.2 to remove the Mainboard 4.6 Replacing Label Supply SpindleTTP-248M Bar Code Printer Service Manual 2. Remove the three screws of the Label Supply SpindleTTP-248M Bar Code Printer Service Manual 5. Reassemble in the reverse procedures after replacing1. Refer to 4.3 to remove the Power Supply Unit 4.7 Replacing Label Rewind SpindleTTP-248M Bar Code Printer Service Manual 2. Remove the E-ring and the pulley of the Label Rewind Spindle6. Reassemble in the reverse procedures after replacing TTP-248M Bar Code Printer Service Manual5. Replace the Label Rewind Spindle 2. Release the Print Head Lift Lever TTP-248M Bar Code Printer Service Manual 4.8 Replacing Platen1. Refer to 4.1 to remove the Top Right and Left Side Covers 3. Remove the screw and the Stripper/Rewind Plate7. Reassemble in the reverse procedures after replacing TTP-248M Bar Code Printer Service Manual6. Remove the Platen and Left Shaft Bearing 2. Disconnect the harness from the Motor TTP-248M Bar Code Printer Service Manual 4.9 Replacing Motor1. Loosen the four fixing screws on the Motor 3. Replace the MotorTTP-248M Bar Code Printer Service Manual 4. Reassemble in the reverse procedures after replacing1. Remove the screws on the Print Head TTP-248M Bar Code Printer Service Manual 4.10 Replacing Print Head4. Reassemble in the reverse procedures after replacing 2. Disconnect the two Printer Harnesses 3. Replace the Print HeadTTP-248M Bar Code Printer Service Manual 4.11 Replacing Print Head Pressure Adjustment Knob1. Open the Right Side Cover and Right Side Plate 7. Reassemble in the reverse procedures after replacing TTP-248M Bar Code Printer Service Manual5. Remove A.B.C.D in order 6. Loosen M4 screw, knob E and F 1. Disconnect the wires of Gap/Black Mark Sensor 4.12 Replacing Gap/Black Mark SensorTTP-248M Bar Code Printer Service Manual 2. Refer to 4.8 to remove the Stripper/Rewind PlateTTP-248M Bar Code Printer Service Manual 5. Remove the screw on the main frame. The Gap/Black Mark Sensor assembly is separated into upper part and lower partTTP-248M Bar Code Printer Service Manual 7. Reassemble in the reverse procedures after replacingTTP-248M Bar Code Printer Service Manual 4.14 Replacing Print Head Lift Lever SensorCurly plastic pipe Screws Cause of Errors 5. TROUBLESHOOTING5.1 Troubleshooting Recovery Procedure5.2 Calibrate Gap/Black Mark Sensor On-Line indicator isoff, error indicator is Carriage open5.5 Diagnosis Operation Procedure TTP-248M Bar Code Printer Service Manual 5.3 Self-test5.4 DRAM Clear TTP-248M Bar Code Printer Service Manual 5.6 Cleaning Print Head Content UPDATE HISTORYTTP-248M Bar Code Printer Service Manual DateCorporate Headquarters