Epson C70, C80 printers Service Manual and Parts List

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Epson C70, C80 printers Service Manual and Parts List
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This Service Manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians and attention should be given to the precautions on the preceding page.

CONTENTS

Chapter 1 PRODUCT DESCRIPTION
1.1 FEATURES
1.2 SPECIFICATIONS
1.2.1 Physical Specification
1.2.2 Printing Specification
1.2.3 Paper Feeding
1.2.4 Input Data Buffer
1.2.5 Electric Specification
1.2.6 Environmental Condition
1.2.7 Reliability
1.2.8 Safety Approvals
1.2.9 Acoustic Noise
1.2.10 CE Marking
1.3 INTERFACE
1.3.1 Parallel Interface
1.3.2 Parallel Interface (Reserve Channel)
1.3.3 USB Interface
1.3.4 Prevention Hosts of Data Transfer Time-out
1.3.5 Interface Selection
1.3.6 IEEE1284.4 Protocol
1.3.7 Printer Language and Emulation
1.3.7.1 Control codes
1.3.7.2 EPSON D4 control channel commands
1.4 OPERATOR CONTROLS
1.4.1 Operate Switch
1.4.2 Control Panel
1.4.2.1 Switches
1.4.2.2 Indicators
1.4.3 Panel Functions
1.4.4 Printer Condition and Panel Status
1.4.5 Printer setting mode (Stylus COLOR C80 only)
1.4.5.1 Default setting mode
1.4.5.2 Print head alignment mode
1.4.6 Printer Initialization
1.4.7 Errors
1.5 PAPER
1.5.1 Paper Handling
1.5.2 Paper Specification
1.5.2.1 Cut Sheet
1.5.2.2 Envelope
1.5.2.3 Index Card
1.5.2.4 EPSON special media
1.5.3 Printing Area
1.5.3.1 Cut Sheet
1.5.3.2 Envelopes
1.6 INK CARTRIDGE
1.6.1 Black Ink Cartridge
1.6.2 Color Ink Cartridge


Chapter 2 Operating Principles
2.1 Overview
2.1.1 Printer Mechanism
2.1.2 Printhead
2.1.2.1 Printing Process
2.1.2.2 Printing Method
2.1.3 Carriage Mechanism
2.1.4 Paper Feeding Mechanism
2.1.5 Paper Loading Mechanism (ASF Unit)
2.1.6 Ink System Mechanism
2.1.6.1 Pump Unit & Wiper mechanism
2.1.6.2 Capping Mechanism
2.2 Electrical Circuit Operating Principles .. 512.2.1 C424 PSB/PSE board
2.2.2 C424 MAIN-B Board
2.2.2.1 Main elements
2.2.2.2 Printhead Driver Circuit
2.2.2.3 CR / PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
2.2.2.4 Reset Circuit
2.2.2.5 EEPROM Control Circuit
2.2.2.6 Sensor Circuit


Chapter 3 Troubleshooting
3.1 Overview
3.1.1 Communication Error
3.1.2 Too Late Throughput
3.1.3 Status Monitor does not operate
3.1.4 Troubleshooting with LED Error Indications
3.1.4.1 Remedy when a paper out, double feed or paper jam error occurs
3.1.4.2 Remedies for No I/C and Ink Out Errors
3.1.4.3 Countermeasures when an Ink Low indication appears
3.1.4.4 Remedies for the Maintenance Error
3.1.4.5 Remedies for Fatal Error
3.1.5 Isolating the Faulty Part on the Power Supply Board
3.1.6 Isolating the Faulty Part according to the Phenomenon
3.1.6.1 PF Motor Driver Abnormal 1
3.1.6.2 ASF Driver Abnormal 1
3.1.6.3 Unexpected Ink Out Error 1 (During Print Operation)
3.1.6.4 PF Motor Driver Abnormal 2
3.1.6.5 Carriage Operation Abnormal
3.1.6.6 Dot Missing 1
3.1.6.7 Dot Missing 2
3.1.6.8 Dot Missing 3
3.1.6.9 Repair Handling Failure
3.1.6.10 ASF Driver Abnormal 2
3.1.6.11 CR Motor Operation Abnormal


Chapter 4 Disassembly and Assembly
4.1 Overview
4.1.1 Precautions
4.1.2 Tools
4.1.3 Work Completion Check
4.1.4 Screws
4.2 Disassembly
4.2.1 Housing Removal
4.2.1.1 Printer Cover Removal
4.2.1.2 Stacker Assembly Removal
4.2.1.3 Upper Case Removal
4.2.1.4 Rear Cover Removal
4.2.1.5 Middle Housing Removal
4.2.1.6 Printer Mechanism Unit Removal
4.2.1.7 Waste Ink Pad Removal
4.2.2 ASF Unit Removal
4.2.3 Main Board Assembly Removal
4.2.4 Power Supply Board Assembly Removal
4.2.5 Print Head / Ink System Unit Removal
4.2.6 Carriage Unit / CR Guide Shaft Removal
4.2.7 Front Paper Guide Removal
4.2.8 EJ Roller Unit Removal
4.2.9 Motor Removal
4.2.9.1 PF Motor Removal
4.2.9.2 CR Motor Removal
4.2.10 PE Actuator Removal
4.2.10.1 Encoder Unit Board Removal
4.2.11 PF Roller Unit Removal
4.2.12 ASF Unit Disassembly
4.2.12.1 ASF Assembly Points
4.2.13 Rotary Encoder Removal


Chapter 5 Adjustment
5.1 Overview
5.1.1 Conditions for Each Adjustment
5.2 Adjustment
5.2.1 Setup the Adjustment Program
5.2.2 Head ID Input
5.2.3 Ink Charge
5.2.4 Head Angle Adjustment
5.2.5 Bi-D Adjustment
5.2.6 PF Adjustment
5.2.7 USB ID Readout (Checking)
5.2.7.1 Possible to Readout the Original USB ID (CASE 1)
5.2.7.2 Impossible to Readout the Original USB ID (CASE 2)
5.2.8 EEPROM Initialization
5.2.9 Platen Gap Adjustment (Mechanism Adjustment)
5.2.10 Head Cleaning Operation
5.2.11 Protection Counter Clear (and Check)
5.2.12 Top Margin Adjustment
5.2.13 First Dot Position Adjustment


Chapter 6 Maintenance
6.1 Overview
6.1.1 Cleaning
6.1.2 Service Maintenance
6.1.3 Lubrication and Adhesion
6.1.4 Lubrication the Carriage Guide Shaft


Chapter 7 Appendix
7.1 Connector Summary
7.1.1 Major Component Unit
7.1.2 EEPROM Address Map
7.1.3 CSIC Address Map
7.2 Component Layout
7.3 Exploded Diagram
7.4 Parts List
7.5 Electrical Circuits

FORMAT: High resolution PDF document!
ZIP archive: 26 934 kB

 

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We are in business since 2002 and do our best to give our customers perfect service!

  hamid badi 2009-09-30 15:12:30  
  J'ai l'honneur de venir respectueusement demander à votre haute bien vaillance de bien vouloir d’accepter mes sentiments les plus distinguées.
  supri adie 2004-11-23 18:28:32  
  looking for information about manual service and maintenance of lq 1170 dot matrix printer
  Peter Sam 2009-08-11 11:18:28  
  Thank you so much for prompt reply. The program I received from you works fine. I have resetted 4 printers already! that is what I need. Peter.
  Gaudencio Valdez 2019-10-01 22:00:35  
  I bougth this latest version of service tools, v5105, I try it at canon mx 495, not working, the printer was in service mode, can you give some tips, maybe not recognized the usb, windows 7 my os, I need some help. Thanks.

Reply: Please replace USB cable by new
  Bob Heinrichs 2011-02-01 06:09:58  
  Thank-you for helping with resetting waste ink counter. Great service Had printer running in 2 minutes. Thanks again for saving me money and time. Bob
  Brian Bloomer 2011-04-30 05:19:44  
  Success! I installed a OctInkjet waste inkpad overflow and tried their reset to no avail - they furnished your link. Your reset fixed my RX690 Epson printer within minutes . Ink started to flow into the overflow immediately (just as well it was installed). I did apattern check-all six colours perfect. Thank you Brian
   2013-09-13 16:54:01  
  Quick and easy. i have an XP600 and Artisan 725 that were showing the 'waste inkpad error'. I bough 2 keys and solved a 2 week headache in 10 minutes.
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