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The Speaker Company TTP 248M 2 System Block of PCB, TTP-248M Bar Code Printer Service Manual

Models: TTP 248M

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TTP-248M Bar Code Printer

Service Manual

The figure below shows the PCB system area:

Communication port

	Print	Decoder
	Print	System
	Head	System
	Head
	Connector	External Memory
		External Memory
		Connector
		MCU
	Power	Memory
	Power	System
	System	System
	System
		Sensor
		Connector

Motor

System

		Option I/O
Cutter System		Option I/O

Fig. 3.2 System Block of PCB

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The Speaker Company TTP 248M service manual 2 System Block of PCB, TTP-248M Bar Code Printer Service Manual

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 LengthTTP-248M Bar Code Printer Service Manual File Head of Font Fixed 32bytesVF1~4 Decode Table BF3~4 VF3~4TTP-248M Bar Code Printer Service Manual 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 Cover4. Remove Top Right Side Cover and Top Left Side Cover TTP-248M Bar Code Printer Service Manual3. Loosen the three screws on 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 Screws1. Refer to 4.3 to remove the Power Supply Unit 4.4 Replacing the Ribbon Rewind SpindleTTP-248M Bar Code Printer Service Manual 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 Screws6. Replace the Ribbon Rewind Spindle TTP-248M Bar Code Printer Service Manual7. Reassemble in the reverse procedures after replacing 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 Spindle5. Replace the Label Rewind Spindle TTP-248M Bar Code Printer Service Manual6. Reassemble in the reverse procedures after replacing 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 Plate6. Remove the Platen and Left Shaft Bearing TTP-248M Bar Code Printer Service Manual7. Reassemble in the reverse procedures after replacing 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 Head1. Open the Right Side Cover and Right Side Plate 4.11 Replacing Print Head Pressure Adjustment KnobTTP-248M Bar Code Printer Service Manual 5. Remove A.B.C.D in order 6. Loosen M4 screw, knob E and F TTP-248M Bar Code Printer Service Manual7. Reassemble in the reverse procedures after replacing 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 replacingCurly plastic pipe Screws 4.14 Replacing Print Head Lift Lever SensorTTP-248M Bar Code Printer Service Manual Cause of Errors 5. TROUBLESHOOTING5.1 Troubleshooting Recovery Procedure5.2 Calibrate Gap/Black Mark Sensor On-Line indicator isoff, error indicator is Carriage open5.4 DRAM Clear TTP-248M Bar Code Printer Service Manual 5.3 Self-test5.5 Diagnosis Operation Procedure TTP-248M Bar Code Printer Service Manual 5.6 Cleaning Print Head Content UPDATE HISTORYTTP-248M Bar Code Printer Service Manual DateCorporate Headquarters