Epson Stylus Photo 785EPX, 895, PM790PT Printers Service Manual

$9.99
Epson Stylus Photo 785EPX, 895, PM790PT Printers Service Manual
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This Stylus Photo 785EPX, 895, PM790PT 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
1.3.1 USB Interface
1.4 PCMCIA Card Slot
1.4.1 Card Slot Standard
1.4.2 Supported Memory Card
1.4.3 Supported Voltage
1.5 Standalone Print Function
1.5.1 File System
1.5.2 File Format
1.5.3 Valid Image Sizes
1.5.4 Maximum Number of Photo Data Files
1.5.5 Thumbnail Image Data
1.5.6 File Sort
1.5.6.1 File Sort Rule
1.5.6.2 Date Data Capture Rule
1.5.6.3 Date Range
1.6 Printer PNL Operation Specifications
1.6.1 Switches
1.6.2 Indicators
1.6.3 Panel Functions
1.6.4 Printer Condition and Panel Status
1.7 Printer Initialization
1.8 Initial setting values
1.9 Errors
1.10 Printing of filled patterns
1.11 Monochrome PNL operation specification
1.11.1 Appearance
1.11.2 Swith Function
1.11.3 Process LED
1.11.4 Error Display (LCD)
1.12 PAPER
1.12.1 Paper Handling
1.12.2 Paper Specification
1.12.2.1 Cut Sheet
1.12.2.2 Envelope
1.12.2.3 EPSON special media
1.12.3 Printing Area
1.12.3.1 Cut Sheet
1.12.3.2 Envelopes
1.13 INK CARTRIDGE
1.13.1 Black Ink Cartridge
1.13.2 Color Ink Cartridge
1.14 Accessories and Option
1.15 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 C408 PSE board
2.2.1.1 Process how 42VDC, 5VDC and 3.3VDC are generated
2.2.1.2 Protection circuit
2.2.1.3 PS Control Function
2.2.1.4 Power saving mode
2.2.2 C408 MAIN Board
2.2.2.1 Main elements
2.2.2.2 Printhead Driver Circuit
2.2.2.3 CR Motor Driver Circuit
2.2.2.4 PF Motor Driver Circuit
2.2.2.5 ASF Motor Drive Circuit
2.2.2.6 Reset and EEPROM circuits
2.2.2.7 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
4.2.2.1 Printer Panel Board Removal
4.2.2.2 Monochrome panel board removal
4.2.3 Housing Lower Cover Removal
4.2.3.1 Housing Lower Cover Left Removal
4.2.3.2 Housing Lower Cover Right Removal
4.2.4 Printhead removal
4.2.5 CR motor removal
4.2.6 Waste drain ink pad unit removal
4.2.7 Printer mechanism removal
4.2.8 Circuit board removal
4.2.9 LD Roller removal
4.2.10 HP/PE Sensor removal
4.2.11 Ink system unit removal (Cap & Pump unit )
4.2.12 ASF Motor Removal
4.2.13 Paper Eject Roller removal
4.2.14 PF motor removal
4.2.15 CR unit removal
4.2.16 Paper feed roller removal
4.2.17 Disassembling ASF frame unit
4.3 Preview monitor disassembly procedure
4.3.1 Back case removal
4.3.2 Removal of the control board unit
4.3.3 Panel unit removal

Chapter 5 Adjustment
5.1 Outline
5.1.1 Adjustment items
5.2 Parallel adjustor
5.3 Adjustments with the service program
5.3.1 Outline
5.3.2 Starting up the service program
5.3.3 EEPROM initial setting
5.3.4 Head ID
5.3.5 Bi-D
5.3.6 USB ID
5.3.7 Memory card drive confirmation
5.3.8 Head cleaning
5.3.9 Ink replenishment
5.3.10 Refurbishment for DOA
5.3.11 Protection counter
5.3.12 Printing on normal A4 paper
5.3.13 CSIC information
5.3.14 EEPROM data
5.4 Firmware update
5.4.1 Firmware update method
5.4.2 Firmware version check method
5.5 Adjustment/inspection of the preview monitor
5.5.1 Update to the firmware for inspection
5.5.2 Brightness adjustment
5.5.2.1 Brightness adjustment procedures
5.5.3 Image pattern inspection

Chapter 6 Maintenance
6.1 Overview
6.1.1 Cleaning
6.1.2 Service Maintenance
Chapter 7 Appendix
7.1 Connector Summary
7.1.1 Major Component Unit
7.1.2 EEPROM Address Map (printer section)
7.1.3 EEPROM Address Map (Storage section)
7.2 Exploded Diagram
7.3 Parts List
7.4 Electrical Circuits

FORMAT: High resolution PDF document!
ZIP archive: 8 693 kB

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

  Art Fix 2011-06-06 09:34:43  
  My Epson 1280 started getting the dreaded flashing panel lights. The printer quit working all together. I found on the web, that the cause was the ink waste counter had topped out and the printer required service to reset the counter. Then I found this site and downloaded the manual and the service application. Ran the program and quickly reset the counter now all is well again! Worked like a dream. Thank you! Art @ artsgraphics.com
  Nadio Bertelli 2018-07-30 09:23:03  
  Thanks for this amazing software! This really helped me in my issue with Epson L200 Printer. More powers to the devs of this software.
  bivash basak 2020-03-08 00:17:27  
  Device is not ready to perform this operation. Error Waste ink pad counter overflow error my printer is epson l1455
  NORMA ZUBIA 2023-01-02 05:33:28  
  Thank you very,very much for resetting Waste-Counter to Zero (checked ok) and Key-Selling. I´m so glad, that my Printer is not to give up. It must not to go to Müll-Entsorgung! I´m so glad!
  Alberto Micker 2020-01-07 06:30:15  
  I bought the chipless key code and it worked as it should with the CIS...... Thank you
  HADAD HADDAD 2023-06-04 19:35:41  
  please reset my key my key is 522EDAZCZ9Z2273C thank you

-----------Reply-----------
Key is for one use only and can not be reset.
You need new key.
  Mukesh Mishra 2012-10-19 07:16:58  
  PLACE SIR, WIC RESET KEY TRAIL KEY TX121 PRINTER THENK YOU
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