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!

  Rod Marquardt 2012-11-16 22:37:12  
  I was very pleased with your company and would recomend to everyone. Very easy!
  Bruce Nicholson 2007-06-03 06:28:43  
  Really terrific service and rescue manual and a very helpful and approachable team of people. The very small expenditure indeed saved me the price of a new printer.
  Pornchai Waiyakhrut 2009-12-15 02:25:51  
  Just wanted to say thanks for your prompt service. I received the manual and have printed it.
  George Chege 2016-02-16 20:03:14  
  The key you provided worked exactly as advertised and I was able to unlock our PP-100 and resume use. Thank you so much for your response and excellent product!
  seifs2000 seif 2011-06-14 19:33:09  
  have not seen better program then this for reset the printer really excellent, thank you
  vivek pillai 2006-04-05 02:02:05  
  pl send me the service manual for epson stylus 3000 printer
  Jean Carivenc 2015-05-08 15:46:00  
  I did not use the printer Epson Pro 4900 for a long time and even after 5 or 6 powerful manual cleanings for all inks the paper was staying completely white !! I did the Ink Charge and cleaning process described in the soft and after that the machine is working 100% fine In France there is no way to get this software except if you work for Epson !!!
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