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About This Manual
Contents
Symbols Used in This Manual
Page
Stylus Photo 750 Revision A
1
Table of Contents
Product Description
Operating Principles
Troubleshooting
Disassembly and Assembly
Maintenance
Appendix
Page
Product Description Overview 4
1.1 Overview
1.1.1 General Characteristics
Product Description General Description 5
1.2 General Description
1.2.1 Printing
Product Description General Description 6
1.2.2 Paper Feeding
1.2.3 Paper Specification
Product Description General Description 7
1.2.4 Printable Area
Figure 1-3. Printable Area
Cut Sheet The figure below shows printable area.
PW
BM
+ 0
1.2.6 Environmental Conditions
Product Description General Description 10
1.2.7 Ink Cartridge
1.2.7.1 Black Ink Cartridge
1.2.7.2 Color Ink Cartridge
Product Description General Description 11
1.2.8 Input Data Buffer
1.2.9 Electric Specification
1.2.10 Reliability
1.2.11 Safety Approvals
1.2.12 Acoustic noise
1.2.13 CE Marking
1.2.14 Printer Language and Emulation
1.2.14.1 ESC/P Control Codes
Page
Product Description Parallel Interface 14
1.3 Parallel Interface
1.3.1 Parallel Interface(Forward channel)
Product Description Parallel Interface 15
NOTE:In/Out refers to the direction of signal flow from the printers point of view.
1.3.2 Parallel Interface(Reverse channel)
Product Description Parallel Interface 16
Table 1-9. Connect pin assignment and signals
Product Description Parallel Interface 17
NOTE:Following lists Notes when using the parallel interface.
Product Description Parallel Interface 18
1.3.3 Serial Interface
NOTE:In/Out refers to the direction of signal flow from the printers point of view.
Product Description Parallel Interface 19
1.3.4 USB(Universal Serial Bus) Interface
1.3.5 Prevention of data transfer time-out on the host
1.3.6 Interface selection
1.3.7 IEEE 1284.4 protocol
Product Description Function 21
1.4 Function
1.4.1 Control Code
1.4.2 Bi-directional Command
1.4.3 Control Panel
1.4.3.1 Switches
1.4.4 Special Setting Mode
NOTE:*Waste ink counter value and Timer IC counter value are initialized.
1.4.5 LED Indications
Product Description Function 23
1.4.6 Errors
Product Description Function 24
1.4.7 Initialization
Product Description Function 25
1.4.8 Initialization Setting
1.4.9 Physical Specification
Page
Page
Operating Principles Overview 28
2.1 Overview
2.1.1 Printer Mechanism
Operating Principles Overview 29
Operating Principles Operating Principles of Electric Circuit 30
2.2 Operating Principles of Electric Circuit
2.2.1 C257 PSB Power Supply Circuit
Operating Principles Operating Principles of Electric Circuit 31
TRANS(T1)
Operating Principles Operating Principles of Electric Circuit 32
2.2.2 C259 Main Control Circuit
Figure 2-4. Control Circuit Block Diagram
2.2.2.1 Major Elements
Major elements used in C259 main control circuit board are below. Table 2-2. Major Elements
Operating Principles Operating Principles of Electric Circuit 33
2.2.2.2 Reset Circuit
Operating Principles Operating Principles of Electric Circuit 34
2.2.2.3 Sensor Circuit
Operating Principles Operating Principles of Electric Circuit 35
2.2.2.4 Timer Circuit
op08
op07
ORG
Figure 2-8. Common Drive Circuit
2.2.2.7 Paper Feed (Pump) Motor (PF/Pump Motor) Drive Circuit
+5
- +
6 5
C90A05 (IC1)
2.2.2.8 Carriage Motor(CR Motor) Drive Circuit
op10
CN7
Rotor
1
Page
Troubleshooting Overview 39
3.1 Overview
Figure 3-1. Troubleshooting Flowchart Table 3-1. Motor, Coil Resistance
Table 3-2. Sensor Check Point
Troubleshooting Overview 40
Table 3-3. Error Indication
Troubleshooting Unit Level Troubleshooting 41
3.2 Unit Level Troubleshooting
Figure 3-2. Flowchart 1
1. Printer does not operate.
Troubleshooting Unit Level Troubleshooting 42
2. Error is detected.
Figure 3-4. Flowchart 3
Figure 3-3. Flowchart 2
3. Abnormal printing operation
Troubleshooting Unit Level Troubleshooting 43
4. Paper feed operation is not performed correctly
Figure 3-6. Flowchart 5
Figure 3-5. Flowchart 4
5. Abnormal Control Panel
3.3 Unit Repair (Power Supply Board)
EPSON Stylus Photo 750 Revision A
Troubleshooting Repair of the Control Board 45
3.4 Repair of the Control Board
Troubleshooting Repair of the Control Board 46
Table 3-9. Repair of the Control Board
Troubleshooting Unit Repair (Printer Mechanism) 47
3.5 Unit Repair (Printer Mechanism)
Table 3-11. Repair of the Printer Mechanism
Troubleshooting Unit Repair (Printer Mechanism) 48
Table 3-12. Repair of the Printing Mechanism Table 3-13. Repair of the Printing Mechanism
Troubleshooting Unit Repair (Printer Mechanism) 49
Table 3-14. Repair of the Printer Mechanism Table 3-15. Repair of the Printer Mechanism
Page
Disassembly and Assembly Overview 51
4.1 Overview
4.1.1 Precautions
Disassembly and Assembly Overview 52
4.1.3 Work Completion Check
Disassembly and Assembly Disassembly 53
4.2 Disassembly
Figure 4-1. Flowchart
The flowchart below shows step-by step disassembly procedures.
START
Housing Removal
4.2.1 Housing Removal
Disassembly and Assembly Disassembly 55
4.2.2 Circuit Boards Removal
NOTE:When removing C257PSB, disconnect cables connected to the C259 main board.
Disassembly and Assembly Disassembly 56
Disassembly and Assembly Disassembly 57
4.2.3 Control Panel Removal
Disassembly and Assembly Disassembly 58
4.2.4 Absorber Tray, Assembly;A Removal
Disassembly and Assembly Disassembly 59
4.2.5 Printer Mechanism Removal
4.2.5.1 Print Head Removal
Disassembly and Assembly Disassembly 60
Disassembly and Assembly Disassembly 61
4.2.5.2 Pump, Assembly/Cap, Assembly Removal
Disassembly and Assembly Disassembly 62
OK
NG
Disassembly and Assembly Disassembly 63
4.2.5.3 Motor, Assembly, CR Removal
Disassembly and Assembly Disassembly 64
4.2.5.4 Motor Assembly PF Removal
Disassembly and Assembly Disassembly 65
4.2.5.5 ASF, Assembly Removal
Disassembly and Assembly Disassembly 66
4.2.5.6 Paper Feed Roller Assembly Removal
Disassembly and Assembly Disassembly 67
4.2.5.7 Roller Assembly, LD Left/Right Removal
Disassembly and Assembly Disassembly 68
4.2.5.8 Carriage Assembly Removal
Disassembly and Assembly Disassembly 69
EPSON Stylus Photo 750 Revision A
Disassembly and Assembly Disassembly 70
4.2.5.9 PE Sensor Assembly Removal
Disassembly and Assembly Disassembly 71
4.2.5.10 Roller, Assembly, PF Removal
Disassembly and Assembly Disassembly 72
Page
Disassembly and Assembly Disassembly 74
4.2.5.12 Cartridge Sensor(Sensor, I/C) Removal
Disassembly and Assembly Disassembly 75
Page
Adjustment Overview 77
5.1 Overview
5.1.1 Required Adjustment
Adjustment Adjustment 78
5.2 Adjustment
5.2.1 Paper Gap Adjustment
Adjustment Adjustment 79
Adjustment Adjustment by Adjustment Program 80
5.3 Adjustment by Adjustment Program
5.3.1 Adjustment Program
5.3.1.1 How to use the Adjustment Program
Adjustment Adjustment by Adjustment Program 81
Adjustment Adjustment by Adjustment Program 82
5.3.2 Setting Destination Information
Adjustment Adjustment by Adjustment Program 83
5.3.3 Head Voltage ID Adjustment
Adjustment Adjustment by Adjustment Program 84
5.3.4 Head Angular Adjustment
Adjustment Adjustment by Adjustment Program 85
Adjustment Adjustment by Adjustment Program 86
5.3.5 Bi-D Adjustment
<Result of the Pattern>
aj14
Adjustment Adjustment by Adjustment Program 87
5.3.6 Head Cleaning
Adjustment Adjustment by Adjustment Program 88
5.3.7 Initial Ink Charge
Adjustment Adjustment by Adjustment Program 89
5.3.8 Counter Value for Ink Absorber
5.3.8.1 Protect Counter Value
5.3.8.2 Protect Counter Reset
Page
Maintenance Overview 91
6.1 Overview
6.1.1 Cleaning
6.1.2 Service Maintenance
Maintenance Overview 92
6.1.3 Lubrication
Table 6-1. Specified Lubricants
Table 6-2. Lubrication Point
Maintenance Overview 93
Table 6-3. Lubrication Point Table 6-4. Lubrication Point
Maintenance Overview 94
No.6
No.7
Page
Page
Appendix Connector Summary 97
7.1 Connector Summary
Table 7-2. Connector CN4
Figure 7-1. Connection of the Major Components
7.1.1 Major Component Unit
Table 7-1. Connector Summary for C259Main
Appendix Connector Summary 98
Table 7-3. Connector CN5
Table 7-7. Connector CN9
Table 7-5. Connector CN7
Table 7-4. Connector CN6
Appendix Connector Summary 99
Table 7-8. Connector CN9 Table 7-9. Connector CN10
Table 7-10. Connector CN11
Page
Page
Appendix Exploded Diagram 102
7.3 Exploded Diagram
Figure 7-6. Exploded Diagram-1
Following pages shows exploded diagram of Stylus Photo 750.
EXPLODED DIAGRAM FOR EPSON STYLUS PHOTO 750 (1/3)
EXPLODED DIAGRAM FOR EPSON STYLUS PHOTO 750 (2/3)
Appendix Exploded Diagram 103
Figure 7-7. Exploded Diagram 2
EXPLODED DIAGRAM FOR EPSON STYLUS PHOTO 750 (3/3)
Appendix Exploded Diagram 104
Figure 7-8. Exploded Diagram 3
