Epson ET-7700, ET-7750, L7180, L7188 Series printers Service Manual

For making printer adjustments and maintenance You can use Epson ET-7750 (EAI) Ver.1.0.0 Service Adjustment Program

Chapter 1 Troubleshooting

1.1 Troubleshooting

 1.1.1 Troubleshooting Workflow 

1.2 Power-On Sequence 

1.3 Fatal Error Code List

 1.3.1 DisplayingtheFatalErrorCode

 1.3.2 Printer Fatal Error Code . 

Chapter 2 Disassembly/Reassembly

2.1 Overview

 2.1.1 Tools

 2.1.2 Jigs

 2.1.3 Locations of the Parts/Units . 

 2.1.4 Standard Operation Time for Servicing the Product . 

2.2 Commoncautionswhendisassembling/reassemblingtheProduct

2.3 Disassembly/Reassembly Procedures . 

 2.3.1 Parts/units to be removed before disassembly/reassembly. 

 2.3.2 Required work before disassembling Adapter Assy. 

2.3.2.1 Procedure 1 

2.3.2.2 Procedure 2 

 2.3.3 Required work before disassembling Ink tank . 

 2.3.4 Printer Inspection Mode (Service Mode) . 

 2.3.5 How to release CR Lock. 

 2.3.6 Disassembly Flowchart. 

2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit. 

 2.5 Routing FFCs/Cables 

Chapter 3 Adjustment

3.1 RequiredAdjustments

3.2 Adjustment Program

 3.2.1 Operating Environment . 

 3.2.2 Details of the Adjustment Program . 

3.2.2.1 CR Motor Heat Protection Control / PF Motor Heat Protection Control / IS Motor Heat Protection 

 3.2.2.2 Scanner Motor Heat Protection. 

 3.2.2.3 Photo sensor light level adjustment . 

 3.2.2.4 Initialize PW deterioration offset. 

3.2.3 MAC Address Setting

3.3 Mechanism Adjustment / Check . 

 3.3.1 Checking the Platen Gap . 

 3.3.1.1 PG Adjustment procedure. 

 3.3.1.2 Preparation

 3.3.1.3 Adjustment procedure. 

Chapter 4 Maintenance

4.1 Overview

 4.1.1 Cleaning the Printhead. 

 4.1.1.1 Cleaning the printhead filter . 

 4.1.1.2 Cleaning the seal rubber section of the printhead. 

 4.1.1.3 Cleaning the nozzle plate section of the printhead . 

 4.1.2 Cleaning the Carriage . 

 4.1.3 Cleaning the Exterior Parts/inside of the printer . 

4.2 Lubrication 

 4.2.1 LubricationPointsandInstructions

Chapter 5 Appendix

5.1 Connector Diagram 

5.2 Protection for Transportation . 

 5.2.1 Securing the CR Unit. 

 5.2.2 SecuringtheTubeGuideFrame

 5.2.3 Securing the Paper Support Assy . 

 5.2.4 Securing the Paper Support Cover. 

 5.2.5 Securing the Tank Cover Assy . 

 5.2.6 Securing the Document Cover Assy.