Epson TM200 service manual

Page 51

TM200 Service Manual

6.Remove the two screws on the circuit board, you could depart it then.

7.Reverse the board, you could find the ROMs.

To install, reverse the removal procedures.

Caution:

When performing this procedures, be sure to use a grounded wrist band and take other measures to protect against electrostatic charge.

Internal circuit board components become hot during normal use. Make sure they have cooled sufficiently before performing this procedure.

There are 2 ROMs on the board, the one is LOW bye(U10), the other one is HIGH byte(U12), please make sure the ROM be placed to the correct place.

After removing these circuit boards, be sure to protect them against electrostatic charge damage by placing them in an anti-static bag.

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Contents TM200 Appendix a Printer cover Control Panel Cutter cover Cover open button Printer PartsCharacter size Printing SpecificationsPrintable Area Paper SpecificationsElectrical Specifications AutocutterConditions of acceptability EMI and Safety Standards AppliedExternal Dimensions and Weight ReliabilityHumidity Environmental ConditionsTM200 Printer Mechanism Major Component SpecificationsConnectors Power Supply ConnectorDrawer Kick-out Connector InterfacesRS-232 serial interface TM200 serial printer status and signals Switching between online and offlinePanel Button Buttons, Switches, and Panel LightsPower Switch Type Rocker switch FunctionDIP Switches Panel lightsSerial interface model OFF Transmission Speed EPP Parallel interface model DIP switchRunning the self test Self-testEnding hexadecimal dumping Hexadecimal DumpHexadecimal Dump Function Performing a Hexadecimal DumpCover Open Sensor Standard AccessoriesPaper Sensors Cover Open ButtonConsumables External Power Supply SpecificationsInput specifications OptionsOutput specifications TM200 Printer Mechanism Component ConnectionsFrame cover open Printer Mechanism Thermal head ModuleCutter blade knob Main Circuit Board UnitAutocutter Module Autocutter operationTM200 Control Circuit CPU peripheral logic circuitsPower Supply Circuit Control Panel Control CircuitDrawer Kick Control Circuit I/F Circuit Board Switch Circuit BoardHandling Transport PrecautionsSetup Precautions Operational PrecautionsLoading paper roll Paper PrecautionsPage Errors Problem SolvingClearing Paper Jams Inspection and Maintenance Maintenance ProceduresCleaning Thermal head Dirt, lint, dust Platen roller on receipt sidePaper roll end sensor on receipt side Exterior dirtSymptoms and Solutions TroubleshootingError Types and Processing Printer Operation when an Error OccursData Receive Error only with the serial interface model Page Titles Before Starting disassembly, assembly, and adjustmentUsing this Manual Disassembly, Assembly, and Adjustment ProceduresPlease following the steps for disassembly TM200 Disassembly, Assembly, and AdjustmentDoor sensor block Page Paper out sensor block and paper sensor block Page Page Autocutter module Page Thermal head module Page Page Main circuit board Page Page Switching between online and offline SpecificationsInterface Pin Assignments Appendix B Exploded diagram Appendix C Panel lights and indicators Page Appendix D Parts number list