Epson TM-FX2180 manual Adjusting and Resetting the Printer, Platen Gap/Parallelism Adjustment

Page 76

EPSON FX-2180 Service Manual	Chapter 5 Adjustments

5.2 Adjusting and Resetting the Printer

5.2.1 Platen Gap/Parallelism Adjustment

ribbon mask

If you have rotated or reassembled the rear carriage guide shaft or parallelism adjustment bushing, or if printing is too light or too dark even when the PG lever is in the proper position, perform the platen gap/parallelism adjustment.

ribbon mask holder

Perform this adjustment at the following three positions: the far left, center, and far right (about the 1st, 68th, and 136th) columns.

1. Remove the print head from the carriage assembly. (See Chapter 4.)

2. Using tweezers, remove the ribbon mask from the ribbon mask holder, as shown in Figure 5-1.

Figure 5-1. Removing the Ribbon Mask

5-2

Image 76

Contents 659,&0$18$ FCC Compliance Statement For American Users Trademarks Precautions Preface Table of Contents Page Page Product Description Specifications Printing SpecificationsPrint Speed and Printable Columns Character Printable Printing Speed cpsResolution Printing ModePrintable Area Vertical Adjacent Dot Density dpiContinuous Paper EnvelopesPostcards Roll PaperPaper Specifications Paper Feed SpecificationsFront Entry Rear Entry Minimum Maximum Minimum Maximum Front Entry Rear Entry Bottom Entry Min Max Software Specifications Interface SpecificationsFront Entry Bottom Entry Minimum Maximum Electrical Specifications Physical SpecificationsEnvironmental Conditions ReliabilityOperation Button Function LEDsLEDs Color Description Error Beep Pattern Paper Release Lever PositionsBeeper Lever Position DescriptionTurning on the Double-strike Mode Special FunctionsPaper Thickness Lever Positions Printing a Self TestChanging Default Settings Using the Bidirectional Adjustment ModeSetting Options Consumables and Options Printing a Hex DumpClearing the Eeprom ConsumablesOperating Principles Overview Printer MechanismPower Supply Circuit Power Supply Circuit OperationBoard Input Voltage Fuse F1 Rating Output Voltage ApplicationsControl Circuit Control Circuit OperationComponent Functions CPU IC2+$375 Troubleshooting Information Print HeadSensors Sensor Test PointsError Conditions MotorsUnit Level Troubleshooting Symptom Problem Description FlowchartFlowchart Abnormal Paper Feeding Abnormal Power Operation Repairing the Power Supply Board Problem Cause Checkpoint SolutionWaveform Repairing the Main Board Assembly Problem Cause Checkpoint Solution15. Waveform Repairing the Printer Mechanism Repairing the Printer MechanismFFC TOP Troubleshooting Disassembly and Assembly Precautions Description SpecificationTools ToolSpecifications for Screws Abbreviation Part NameService Check After Repair Category Item to Question to Answer CheckmarkDisassembly and Assembly Whenever you repair the printer, wipePreparing to Disassemble the Printer Rear tractor tab 1Removing the Panel Board Assembly Removing the Panel Board AssemblyConnecting the Print Head FFCs Removing the Print HeadRemoving the PW Sensor Assembly Removing the HP Sensor10. Installing the PW Sensor Assembly Removing the Ribbon MaskRemoving the Upper Housing Assembly 13. Removing the Upper Housing AssemblyRemoving the Platen Assembly 15. Removing the Platen AssemblyRemoving the Case Open Sensor Assembly Removing the Platen Gear18. Removing the Case Open Sensor Assembly Removing the Printer MechanismConnector Pins CN9Removing the CR Motor Assembly 21. Removing the CR Motor AssemblyRemoving the PF Motor Assembly 22. Removing the PF MotorRemoving the PG Sensor Assembly 23. Removing the PG Sensor AssemblyRemoving the Right Sub Frame Assembly Removing the Right Frame AssemblyDisassembling the Right Frame Assembly $-86701727. Engaging the Right Frame Assembly Gears 1 Removing the Left Frame Assembly 29. Engaging the Tractor Clutch CamRemoving the Ribbon Drive RD Assembly 30. Removing the Left Frame AssemblyRemoving the CR Assembly Tightening torque for the two CBS screws34. Inserting the Timing Belt Removing the Rear PE Sensor Assembly 36. Installing the Rear CR Guide Shaft38. Removing the Front PE Sensor Assembly 39. Removing the Upper Shield Plate and Upper I/F Removing the Power Supply Board Assembly 41. Removing the Power Supply Board AssemblyAdjustments Required Adjustments Adjustment OverviewAdjustment Tools Adjusting and Resetting the Printer Platen Gap/Parallelism AdjustmentSetting the PG Adjustment Lever Bidirectional Print Alignment Bi-d Adjustment Adjusting the Parallelism of the Carriage Guide ShaftPerforming the Bi-d Adjustment Using the Settings Diskette Destination SettingPerforming the Bi-d Adjustment from the Control Panel Bi-d Adjustment MenuFactory Settings 11. Pitch LightsTPE Level Reset TPE level. Check that the reset value is FF17. Main Menu Adjustments Maintenance Preventive Maintenance Lubrication Name Quantity Availability Part NumberMaintenance Ref. No Lubrication Points Quantity LubricantLubrication Points 1 Appendix Board Connector Function Pins Connector SummarySignal Name Function Pin Signal Name Function Table A-8. Connector Pin Assignments − CN9 Table A-13. Connector Pin Assignments − CN14 Circuit Board Component Layout Diagrams Figure A-3. C244 Main Board Component Layout Diagram 2Figure A-4. C166 PSB Board Component Layout Diagram Circuit Board and Exploded Diagrams Page DB1 A t s in k Q 1 , D 5 Page Exploded Diagram for FX-21801 Exploded Diagram for FX-21802 Exploded Diagram for FX-21803