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The Speaker Company TTP 248M service manual Screw LCD Panel Lower Front Cover

Models: TTP 248M

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Troubleshooting Specification Reset Circuit Connector Circuits Diagnosis Operation Procedure Update History

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TTP-248M Bar Code Printer

Service Manual

Screw

LCD Panel

Screw

Lower Front Cover

42

Page 44 Page 46

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The Speaker Company TTP 248M service manual Screw LCD Panel Lower Front Cover

Page 44 Page 46

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Contents

TTP 248M TTP-248M Bar Code Printer Table of Content TTP-248M Bar Code Printer Printer Overview Foundamentals about the System Specification TTP-248M Bar Code Printer Pinter Specification Communication Interface Available Bar Codes Text Specification File Head of Font Fixed 32bytes BF3~4 VF3~4 Types of Paper Specification TTP-248M Bar Code Printer Ribbon Specification MCU Circuit Description MCU MCU PIN Description Page Page Page Page Page Page Page Page Reset Circuit TTP-248M Bar Code Printer Reset Circuit Etro N Tech TTP-248M Bar Code Printer Memory System Memory Address Map Decoder Circuits Use by CPU Area Internal I/O Sdram TTP-248M Bar Code Printer Firmware Address Map VCC TTP-248M Bar Code Printer Power Down Sensor GND TTP-248M Bar Code Printer Print Head Stepping Motor Pattern Motor System Circuit Ribbon Near End Sensor TTP-248M Bar Code Printer Sensor Circuits 10 Black mark/ Gap Sensor Circuit Peel-off Sensor 11 Peel-off Sensor Circuit Case Sensor GND VDD Serial Port Circuit VDD Parallel Port Circuit 17 Cutter Drive Circuit TTP-248M Bar Code Printer Cutter Drive System Connector Circuits TTP-248M Bar Code Printer PIN Switch Circuits 21 Memory Card Connector 23 Stepping Motor Connector Optional Item---Buzzer TTP-248M Bar Code Printer Optional Items Circuits Remove the Covers and LCD Panel Machanism Loosen the three screws on Top Left Side Cover Screw LCD Panel Lower Front Cover TTP-248M Bar Code Printer Replacing the Mainboard TTP-248M Bar Code Printer Replacing the Power Supply Unit Belt Ring of Label Rewind Spindle Remove the E-ring of pulley. And then, remove the pulley TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Ribbon Supply Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Label Supply Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Label Rewind Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Platen Remove the Platen and Left Shaft Bearing TTP-248M Bar Code Printer Replacing Motor TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Print Head Remove the 2 screws these are on the TPH switch plate Remove A.B.C.D in order Loosen M4 screw, knob E and F TTP-248M Bar Code Printer Replacing Gap/Black Mark Sensor TTP-248M Bar Code Printer Reassemble in the reverse procedures after replacing Curly plastic pipe Screws Troubleshooting Troubleshooting Flash / Dram Calibrate Gap/Black Mark Sensor Diagnosis Operation Procedure TTP-248M Bar Code Printer Self-testDram Clear TTP-248M Bar Code Printer Cleaning Print Head Update History No.35, Sec , Ligong 1st Rd., Wujie Township

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