Epson PH890 Manuals

Epson PH890 Manuals

Manuals and User Guides for Epson PH890. We have 1 Epson PH890 manual available for free PDF download: Service Manual

Epson PH890 Service Manual

Epson PH890 Service Manual (206 pages)

Brand: Epson | Category: Printer | Size: 7.36 MB

Table of Contents

Table of Contents
7
Chapter 1 PRODUCT DESCRIPTIONS

10
- Overview
  11
- Features
  11
- Accessories, Consumable Products, and Options
  12
- Basic Specifications
  14
- Printing Specification
  14
- Control Code
  14
- Paper Feeding
  14
- Input Data Buffer
  14
- Paper Specifications
  15
- EPSON Special Media
  15
- Printing Area
  17
- Cut Sheet
  17
- Envelopes
  18
- Adjust Lever
  18
- Ink Cartridge
  19
- Electric Specification
  20
- Reliability
  20
- Environmental Condition
  21
- Interface
  22
- Parallel Interface (Forward Channel)
  22
- Parallel Interface (Reserve Channel)
  25
- USB Interface
  26
- Prevention of Data Transfer Time-Out
  27
- Interface Selection
  27
- IEEE1284.4 Protocol
  27
- Operations
  28
- Buttons
  28
- Indicators
  28
- Panel Functions
  28
- Special Setting Mode
  29
- Printer Initialization
  30
- Initialization Value
  30
- Dimension
  31
Chapter 2 OPERATING PRINCIPLES

34
- Overview
  35
- Printhead Mechanism
  36
- Carriage Mechanism
  37
- Carriage Motor (CR Motor)
  37
- Platen Gap (PG) /Parallelism Adjustment Mechanism
  38
- Carriage Home Position (HP) Detection
  38
- Paper Feeding Mechanism
  38
- CR Lock Mechanism
  40
- Paper Loading Mechanism
  41
- Drive Transmission to the ASF Unit
  41
- Paper Loading Operation
  42
- Pump Mechanism
  43
- Capping Mechanism
  44
- Electrical Circuit Operating Principles
  45
- C378PSB/PSE Board
  45
- Electrical Circuit
  45
- Protection Circuits
  47
- Power Supply Control Function
  47
- Energy Save Mode
  47
- C393MAIN Board Circuit Operation Principles
  48
- Printhead Driver Circuit
  51
- RTC (Real Time Clock)/ Reset/ EEPROM Circuit
  52
- Motor Driver Circuit
  53
- Asf/Pump Motor Driver Circuit
  58
- Sensor Circuit
  59
Chapter 3 TROUBLESHOOTING

62
Chapter 4 DISASSEMBLY and ASSEMBLY

79
- Overview
  80
- Precaution for Disassembling the Printer
  80
- Tools
  81
- Specifications for Screws
  82
- Service Checks after Repair
  83
- Disassembly Procedures
  84
- HOUSING Removal
  85
- Circuit Board Assembly Removal
  86
- Panel Unit Removal
  88
- Printhead Unit Removal
  90
- TRAY, ABSORBER ASSEMBLY Removal
  91
- Ink Unit Removal
  93
- MOTOR ASSEMBLY, CR Removal
  96
- MOTOR ASSEMBLY, ASF Removal
  97
- Unit Removal
  98
- ASF Unit Removal
  101
- SHAFT, ROLLER, LD Removal
  103
- ROLLER ASSEMBLY, LD, RIGHT/LEFT Removal
  108
- Carriage Unit Removal
  109
- BOARD ASSEMBLY, ENCODER Removal
  111
- ROLLER, PF Removal
  112
- SCALE, PF Installation
  115
- MOTOR ASSEMBLY, PF Removal
  118
- PE Sensor Unit Removal
  119
Chapter 5 ADJUSTMENT

120
- Overview
  121
- Adjustment Items
  121
- Adjustment Tools
  122
- Adjustment
  123
- Parallelism Adjustment
  123
- Using PG Adjustment Tool
  123
- Using Thickness Gauge
  126
- Backlash Adjsutment
  127
- Adjustment Program Feature
  129
- How to Install the Program
  130
- How to Uninstall the Program
  130
- Starting the Service Program
  130
- Adjusting Program Initial Setting
  130
- Individual Adjustment Program
  132
- Head ID
  132
- Head ID Input
  132
- Head ID Check
  134
- Bi-Directional Adjustment
  135
- Input Bi-D Adjustment Value
  137
- Check Present Adjustment Data
  138
- Input/Check USB ID
  139
- Input USB ID
  140
- Check USB ID
  140
- Maintenance
  141
- Head Cleaning Operation
  141
- Ink Charge Operation
  142
- Refurbishment for DOA
  143
- Protection Counter
  145
- Check the Present Counter Value
  145
- Clear the Protection Counter Value
  145
Appendix Items

147
- CSIC Information
  147
- EEPROM Data Check
  148
- Changing EEPROM Data
  148
- A4 Check Pattern Printing
  149
- Sequential Repair Adjustment Program
  151
- Function
  151
- How to Start the Program
  151
- Printhead Removal
  151
- Printhead Replacement
  151
- Main Board Replacement
  151
- Carriage Unit Replacement/Removal
  151
- CR Motor Replacement
  151
- Printer Mechanism Replacement
  151
- Waste Ink Pad Replacement
  151
Chapter 6 MAINTENANCE

156
- Overview
  157
- Cleaning
  157
- Service Maintenance
  157
- Head Cleaning
  157
- Maintenance Request Error Clear
  157
- Lubrication
  158
Chapter 7 APPENDIX

167
- Connector Summary
  168
- Connector Alignment
  168
- Connector Pin Assignment
  168
- EEPROM Address Map
  171
- Circuit Board Component Layout
  176
- Electrical Circuit Board Diagrams
  181
- Exploded Diagrams
  187
- Exploded Diagrams for Stylus PHOTO 890
  187
- Exploded Diagrams for Stylus PHOTO 1290
  192
- Parts List
  197
- Parts List for Stylus PHOTO 890
  197
- Parts List for Stylus PHOTO 1290
  202

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