Epson TM-FX2180 manual Unit Level Troubleshooting, Symptom Problem Description Flowchart

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EPSON FX-2180 Service Manual	Chapter 3 Troubleshooting

3.3 Unit Level Troubleshooting

You may be able to identify a defective printer unit simply by observing the printer’s symptoms. The table below lists the symptoms for several printer problems. After you determine the type of printer problem you have, see the corresponding flowchart to isolate the cause of the problem and repair the printer.

Table 3-5. Printer Symptoms and Problem Descriptions

Symptom		Problem Description		Flowchart
Abnormal		∙ The carriage does not move at all.		Flowchart 1
carriage		∙ When you turn on the printer, the carriage
operation		moves away from the home position and then
		stops. All the indicator LEDs on the control
		panel flash.
Abnormal		∙ The printer does not feed the paper at all.		Flowcharts
paper		∙ When you turn on the printer, the printer ejects		2-1 and 2-2
feeding		the paper automatically.
		∙ After you load paper, the printer ejects the
		paper automatically and then indicates it is in
		the ready state.
Abnormal		∙ The control panel indicator LEDs do not		Flowchart 3
power		come on.
operation		∙ The Operate button does not work.
		∙ The control panel buttons do not work.
Abnormal		∙ No image is printed.		Flowchart 4
printing		∙ Printing is faulty; some dots are not printed.

The flowcharts use the following symbols:

START	Start	Decision	END	END
START	Start			END
	Instructions	Branching
		Branching
	Refer to the	Return to the start
	specified flowchart	Return to the start
	specified flowchart	of the flowchart
		of the flowchart

Figure 3-2. Flowchart Symbols

3-4

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Contents 659,&0$18$ FCC Compliance Statement For American Users Trademarks Precautions Preface Table of Contents Page Page Product Description Print Speed and Printable Columns SpecificationsPrinting Specifications Character Printable Printing Speed cpsPrintable Area ResolutionPrinting Mode 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 Environmental Conditions Electrical SpecificationsPhysical Specifications ReliabilityOperation Button Function LEDsLEDs Color Description Beeper Error Beep PatternPaper Release Lever Positions Lever Position DescriptionPaper Thickness Lever Positions Turning on the Double-strike ModeSpecial Functions Printing a Self TestChanging Default Settings Using the Bidirectional Adjustment ModeSetting Options Clearing the Eeprom Consumables and OptionsPrinting a Hex Dump ConsumablesOperating Principles Overview Printer MechanismBoard Input Voltage Fuse F1 Rating Power Supply CircuitPower Supply Circuit Operation 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 Tools PrecautionsDescription Specification 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