Stylus Photo 780, 790 Printers
Service Manual

$9.99
Stylus Photo 780, 790 Printers<br> Service Manual
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This 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

This manual consists of six chapters and Appendix

CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product

CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the product

CHAPTER 3. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting

CHAPTER 4. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the product

CHAPTER 5. ADJUSTMENT
Provides Epson-approved methods for adjustment

CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives
required for servicing the product

APPENDIX
Provides the following additional information for reference:
• Connector pin assignments
• Electric circuit boards components layout
• Electrical circuit boards schematics
• Exploded diagram & Parts List

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 9
1.3.1 Parallel Interface (Forward Channel)
1.3.2 Parallel Interface (Reserve Channel)
1.3.3 USB Interface
1.3.4 Prevention of Data Transfer Time-out
1.3.5 Interface Selection
1.3.6 IEEE1284.4 Protocol
1.4 OPERATOR CONTROLS
1.4.1 Operating 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 Initialization
1.4.6 Errors
1.4.7 Default Settings Selection Function
1.4.8 Printing of filled patterns
1.5 PAPER
1.5.1 Paper Handling
1.5.2 Paper Specification
1.5.2.1 Cut Sheet
1.5.2.2 Transparency, Glossy Paper
1.5.2.3 Envelope
1.5.2.4 Index Card
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
1.7 Changing the Model Name

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
2.2.1 C383 PSB board
2.2.2 C383 MAIN Board
2.2.2.1 Main elements
2.2.2.2 C383MAIN-B, C383MAIN-C
2.2.2.3 Printhead Driver Circuit
2.2.2.4 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
2.2.2.5 CR Motor Driver Circuit
2.2.2.6 Reset Circuit
2.2.2.7 EEPROM Control Circuit
2.2.2.8 Sensor Circuit

Chapter 3 Troubleshooting
3.1 Overview
3.2 Troubleshooting with LED Error Indications

Chapter 4 Disassembly and Assembly
4.1 Overview
4.1.1 Precautions
4.1.2 Tools
4.1.3 Work Completion Check
4.2 Disassembly
4.2.1 Housing removal
4.2.2 Operation Panel removal
4.2.3 Printhead removal
4.2.4 CR motor removal
4.2.5 Waste drain ink pad unit removal
4.2.6 Circuit board removal
4.2.7 LD Roller removal
4.2.8 HP/PE Sensor removal
4.2.9 Ink system unit removal (Cap & Pump unit )
4.2.10 Paper Eject Roller removal
4.2.11 PF motor removal
4.2.12 CR unit removal
4.2.13 Paper feed roller removal
4.2.14 Disassembling ASF frame unit

Chapter 5 Adjustment
5.1 Outline
5.1.1 Adjustment items
5.1.2 Parallel adjustor
5.1.3 Adjustment with the service program
5.1.4 Installing the service program .9
5.1.5 Starting up the service program 9
5.2 Sequential service program by repair
5.2.1 Functions
5.2.2 Adjustment items
5.2.3 Nozzle check
5.2.4 Bi-D adjustment
5.2.5 Head ID input
5.2.6 Ink replenishment
5.2.7 USB ID
5.2.8 Protection counter clear
5.3 Independent adjustment service program
5.3.1 Functions
5.3.2 Head ID
5.3.3 Bi-D
5.3.4 USB ID
5.3.5 Head cleaning
5.3.6 Ink replenishment
5.3.7 Refurbishment for DOA
5.3.8 Protection counter
5.3.9 Printing on normal A4 paper
5.3.10 CSIC information
5.3.11 EEPROM data

Chapter 6 Maintenance
6.1 Overview
6.1.1 Cleaning
6.1.2 Service Maintenance
6.1.3 Lubrication

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


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

  Narayan Chakra Borty 2010-09-18 12:22:25  
  Dear sir plz help for Epson T60 Service Adjustment Program FULL Working New! plz confirum t50 t59 service adjustment program work for t60?
  yrosci yrosci 2013-03-03 20:26:02  
  se avete problemi con l'esaurimento dei tamponi e la vostra stampante vi dice che è arrivata al termine ,non disperatevi con questo programmino potete azzerare i contatori che registrano le vostre pulizie e quando siete arrivati al 100% la stampante non va più quindi scaricate il Wic Reset ,istallatelo e comprate la chiave che viene 9,9 dollari inseritela nel programmino e la vostra stampante ritorna come nuova.
  Rigoberto Andrade 2010-10-17 21:21:11  
  Thank you for PX810 Service Manual
  Gary Heyes 2011-04-10 16:18:07  
  thanks guys,works a treat,no problems at all. all epson users would do well to use this util.
  TING YU Chuang 2013-04-24 17:34:51  
  Absolutely brilliant product so easy and done with the press of a button will defetnetly be using again ! Thanks ! Printer model: Epson r265
  Anonymous 2016-12-16 20:41:53  
  Thanks for the program and manual. I was able to revive a 2 year old 4900. I had 100% blockage in 8 of the 11 heads, and over 50% blockage in the last three.... I ran the ink charge with cleaning fluid. Now I have 100% of the nozzle check pattern on ALL of the heads. I was blown away. I thought for sure I was going to pay for a new head. So, thank you. I also have a an older Epson Stylus Pro 4000. It has been sitting a while and the heads are dried up. Do you have the same program and manual for this printer? I would like to try to revive it as well. If you do could you just send me a link? Thanks again
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