Epson L120 Service Manual
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Epson L120 Service Manual

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SERVICE MANUAL
SERVICE MANUAL
Color Inkjet Printer 
Color Inkjet Printer 
L120
L120
CONFIDENTIAL
CONFIDENTIAL
SEIJ13-005
SEIJ13-005
Table of Contents
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Summary of Contents for Epson L120

  • Page 1     SERVICE MANUAL SERVICE MANUAL Color Inkjet Printer  Color Inkjet Printer  L120 L120 CONFIDENTIAL CONFIDENTIAL SEIJ13-005 SEIJ13-005...
  • Page 2 The contents of this manual are subject to change without notice.   The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
  • Page 3 Epson produ n product shou ct should be perf ld be performed o ormed only by an Ep nly by an Epson cert son certified re ified repair tec pair technicia hnician. n. 2. 2. No work shou...
  • Page 4     7. 7. In order to prot In order to protect sensiti ect sensitive microp ve microprocess rocessors and circu ors and circuitry, use stat itry, use static discharg ic discharge equipme e equipment, such as anti-s nt, such as anti-static tatic wrist straps, when accessing wrist straps, when accessing internal components.
  • Page 5     About This Manual About This Manual This manual, consists of the following chapters, is intended for repair service personnel and includes information This manual, consists of the following chapters, is intended for repair service personnel and includes information necessary for properly performing maintenance and servicing the product.
  • Page 6     Revision Status Revision Status J J a a n n u u a a r r y y 2 2 4 4 , , 2 2 0 0 1 1 4 4 F F i i r r s s t t R R e e l l e e a a s s e e Confidential ...

  • Page 7: Table Of Contents

         L120  L120  Revision A  Revision A Contents Contents Chapter 1 Troubleshooting  Chapter 1 Troubleshooting  1.1 Troubleshooting............Troubleshooting................................................... 9 9 1.1.1 1.1.1 Troubleshooting Troubleshooting Workflow Workflow .................................................... 9 9 1.2 Power-On Power-On Sequence Sequence ............

  • Page 8: Troubleshooting

        CHAPTER  CHAPTER  1 1 TROUBLESHOOTING TROUBLESHOOTING Confidential  Confidential ...

  • Page 9: Troubleshooting Troubleshooting Workflow Workflow

         L120  L120  Revision A  Revision A 1.1 Troubleshooting 1.1 Troubleshooting This section describes the This section describes the troubleshooting workflow and fatal error information. troubleshooting workflow and fatal error information. 1.1.1 1.1.1 Troubleshooting Troubleshooting Workflow Workflow The following page describes the troubleshooting workflow. Follow the The following page describes the troubleshooting workflow.

  • Page 10: Power-On Power-On Sequence Sequence

         L120  L120  Revision A  Revision A 1.2 Power-On Power-On Sequence Sequence This section describes the power-on sequences This section describes the power-on sequences in two conditions. The preconditions are as in two conditions. The preconditions are as follows.
  • Page 11 C (41 C (41 F) by the thermistor on the Printhead. F) by the thermistor on the Printhead. Confidential  Confidential       L120  L120  Revision A  Revision A   Condition 2: Power-on sequence after recovering from a paper jam...

  • Page 12: Fatal

    (Recovery from the maintenance error can be performed up to the specified number performed up to the specified number of times.) of times.) Confidential  Confidential       L120  L120  Revision A  Revision A 1.3 Fatal Fatal Error Error Code Code List List This section describes how to check the fatal error code, description, and the possible causes.
  • Page 13 • • Main B Main Board fa oard failure ilure (Motor (Motor driver driver failure failure) ) Confidential  Confidential       L120  L120  Revision A  Revision A Tabl Table 1-3. e 1-3. Fatal Fatal Error Error List ( List (Print...
  • Page 14 Motor drive Motor drive time error  time error  D D 3 3 H H P P F F ( ( P P I I D D ) ) d d r r i i v v i i n n g g t t i i m m e e e e r r r r o o r r •...
  • Page 15 2: 2: EPSON prov EPSON provides the too ides the tools listed wi ls listed with EPSON part c th EPSON part code. ode. 2.1.2 Jigs 2.1.2 Jigs S S p p r r i i n n g g h h o o o o k k j j i i g g * * C C a a n n b b e e m m a a d d e e w w i i t t h h a a c c o o m m m m e e r r c c i i a a l l i i t t e e m m See "...
  • Page 16  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview 16  16  Confidential  Confidential       L120  L120  Revision A  Revision A 2.1.3 2.1.3 Locations Locations of the of the Parts/Units Parts/Units This section shows the locations of the main parts/units of this product. This section shows the locations of the main parts/units of this product.
  • Page 17 Parts ts  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview 17  17  Confidential  Confidential       L120  L120  Revision A  Revision A   Printer mechanism Printer mechanism CR Driven Pulley Assy (p30) CR Driven Pulley Assy (p30) Adapter (p31) Adapter (p31)
  • Page 18 Rig m: Right ht  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A PF Encoder Sensor* (p29) PF Encoder Sensor* (p29) PF Scale (p29) PF Scale (p29) EJ Roller (p31) EJ Roller (p31)
  • Page 19 R sm: Rear  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A   Ink Supply Tank Assy Ink Supply Tank Assy Ink Supply Tank Tube Assy (p31) Ink Supply Tank Tube Assy (p31) Ink Supply Tank ...
  • Page 20  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A 2.1.4 2.1.4 Standard Operation Standard Operation Time for Time for Servicing the Servicing the Product Product The following are the standard operation time for The following are the standard operation time for servicing the product. Those are based on servicing the product.
  • Page 21 - - - - - - 1 1 0 0 : : 2 2 1 1  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview Confidential  Confidential           L120  L120  Revision A  Revision A Tabl Table 2-1. e 2-1. Stan Standard dard Oper Operation ation Time...
  • Page 22  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A 2.1.5 2.1.5 Checks and Checks and Precautions before Precautions before Disassembling Disassembling 2.1. 2.1.5.1 5.1 Fact Factors whic ors which Affec h Affect the Print Qu...

  • Page 23: Facto

    Operation Ink may spill when removing the following parts Ink may spill when removing the following parts from L120. from L120. This section describes the parts that may cause ink spill and the means to minimize the ink spill when removing This section describes the parts that may cause ink spill and the means to minimize the ink spill when removing the parts.
  • Page 24  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A MEANS TO MINIMIZE THE INK SPILL MEANS TO MINIMIZE THE INK SPILL Even observing the points described in this section, Even observing the points described in this section, ink may spill in the ink may spill in the following situations.
  • Page 25  Disassembly/Reassembly embly Overview Overview Confidential  Confidential       L120  L120  Revision A  Revision A DISCHRGING INK FROM THE INK SUPPLY TANK  DISCHRGING INK FROM THE INK SUPPLY TANK  Discharging ink is recommended only when disconnecting the Ink Supply Tank Discharging ink is recommended only when disconnecting the Ink Supply Tank Tube Assy from the Ink Supply Tube Assy from the Ink Supply Tank.
  • Page 26 Overview Overview 26  26  Confidential  Confidential       L120  L120  Revision A  Revision A   It is recommended that the ink It is recommended that the ink in the Ink Supply Tank should be discharged completely in the Ink Supply Tank should be discharged completely before proceeding before proceeding to disassembling/reassembling.
  • Page 27  Disassembly/Reass  Disassembly/Reassembly embly Overview Overview 27  27  Confidential  Confidential               L120  L120  Revision A  Revision A 2.2 Dis Disasse assembl mbly/R y/Reass eassemb embly Proce ly Procedure dures s This section describes procedures for disassembling the parts/units in a flowchart format. For some parts/units, This section describes procedures for disassembling the parts/units in a flowchart format.
  • Page 28  Disassembly/Reass  Disassembly/Reassembly embly Disassembly/Reass Disassembly/Reassembly Procedures embly Procedures Confidential  Confidential           L120  L120 Revision A Revision A 2.2. 2.2.1 1 Dis Disasse assembl mbly Flowch y Flowchart START...
  • Page 29          L120  L120 Revision A Revision A (p 29) (p 29)   Extension spring Extension spring PF Encoder PF Encoder Paper Support Paper Support Sensor* (p29) Sensor* (p29) Assy (p29) Assy (p29) PF Scale (p29) PF Scale (p29)

  • Page 30: Disassembly Disassembly Flowchart Flowchart (Printhead/Main (Printhead/Main Board) Board)

             L120  L120 Revision A Revision A Cap Assy (p29) Cap Assy (p29) Shield Plate Shield Plate   (p30) (p30) Pump Tube Pump Tube Pump Unit Pump Unit Main Board Assy Main Board Assy CR Motor (p30)
  • Page 32          L120  L120 Revision A Revision A CR Encoder Sensor CR Encoder Sensor Ink Supply Tank Upper Housing Ink Supply Tank Upper Housing Ink Tank Label Ink Tank Label Refilling Ink Label Refilling Ink Label Right side...
  • Page 33      L120  L120 Revision A Revision A Ink Supply Tube Assy Ink Supply Tube Assy Joint Joint Step 6 Step 6 Ink Supply Tube Ink Supply Tube Ink Supply Tube Assy: Step 1 Ink Supply Tube Assy: Step 1...
  • Page 34      L120  L120 Revision A Revision A 2.4 Rou Routin ting FFC g FFCs/c s/cabl ables es Main Board Assy Main Board Assy Head FFC (Routing on the Main Frame) Head FFC (Routing on the Main Frame) Aligning Head FFC with CR Encoder FFC...

  • Page 35: Chapter 3 Adjustment

        CHAPTER  CHAPTER  3 3 ADJUSTMENT ADJUSTMENT Confidential  Confidential ...

  • Page 36: Program

         L120  L120  Revision A  Revision A 3.1 Re Requ quir ired ed Adj Adjus ustm tmen ents ts The table from the following page The table from the following page lists the required adjustments depending upon the parts...

  • Page 38: Operating Operating Environment Environment

         L120  L120  Revision A  Revision A 3.2 Adjustment Adjustment Program Program This section provides the operating environment, functions related to This section provides the operating environment, functions related to safety and privacy policy, and the safety and privacy policy, and the adjustment item newly added of the Adjustment Program.

  • Page 39: Mechanism Mechanism Adjustment Adjustment / / Check Check

    (including using the Epson-specified jigs) according to this manual. If the PG cannot fall using the Epson-specified jigs) according to this manual. If the PG cannot fall within the within the...
  • Page 40  Adjustment  Adjustment Mechanism Adjustment / Check Mechanism Adjustment / Check Confidential  Confidential       L120  L120  Revision A  Revision A 1. 1. Mov Move the C e the CR Uni R Unit to th t to the cen e center o...

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