Epson 4600 Service Manual Page 72
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- TROUBLESHOOTING
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EPSON Stylus CX3500/CX3600/CX3650/CX4500/CX4600 Revision A
OPERATING PRINCIPLES Electrical Circuit Operating Principles 72
2.4.2 C571/577 Main Board
The logic circuit of the C571/577 Main Board is composed of the follows;
T Logic line (CPU-ASIC 2 in 1, SDRAM, P-ROM and so on)
T Motor control/drive circuit (CR Motor, PF Motor, Scanner Motor)
T Head control/drive circuit
T USB Interface control circuit
T Sensor circuit
T Combination circuit (RTC circuit, Reset circuit, EEPROM circuit)
The printer mechanism is controlled by the above circuits. Following explains the
major characteristics of this Main Board.
V Lithium battery is not mounted
Unlike the previous printer (Stylus COLOR 680), the Lithium battery is not
mounted on the Main Board.
V Adoption of 3.3V/1.5V drive logic circuit components
The 5V formed by the Combination Motor Driver (IC9) of C579 Main Board is
stepped down to 3.3V by the Regulator (IC10), and it is then used as drive voltage
for many elements. In addition, when SPC shifts to low power mode, the 3.3V that
was stepped down by the Regulator (IC10) is stepped down to 1.5V by the
Combination Motor Driver (IC9) and elements that had been driven by 3.3V are
driven by 1.5V for suppression of power consumption.
2.4.2.1 Main Elements
Table 2-9 (p.72) shows the function of the each main elements on C571/577 Main
Board.
Table 2-8. 3.3V/1.5V & 5V Drive Components
5VDC 3.3/1.5VDC
• Flash ROM (IC5)
• SDRAM (IC6)
•RTC (IC7)
• CPU-ASIC (IC8)
• Motor driver (IC9)
• Common driver (IC11)
Table 2-9. Main Elements
IC Location Function
Flash ROM IC5
16Mbit
• Firmware storage
SDRAM IC6 Bus= 16 bit, 64Mbit DRAM
RTC IC7
• EEPROM
Default settings, backup for all parameters
• Reset function
• Timer function
CPU-ASIC IC8
CPU mounted on the MAIN board is driven by clock
frequency 48 MHz, 96MHz and controls the printer and
scanner.
Motor Driver IC9
• CR/PF/Scanner motor drive IC
• Dropping 42V line to 5V
• Dropping 3.3V line to 1.5V
Regulator IC10 Dropping 5V line to 3.3V
Common Driver IC11
Head drive control HIC
• Generates head common voltage.
- SERVICE MANUAL 1
- PRECAUTIONS 3
- About This Manual 4
- Revision Status 5
- CONTENTS 6
- Chapter 5 ADJUSTMENT 7
- Chapter 6 MAINTENANCE 7
- Chapter 7 APPENDIX 7
- PRODUCT DESCRIPTION 8
- 1.1 Overview 9
- 1.2 Specifications 11
- • Humidity 40 to 60% RH 12
- 1.2.1.5 Printing Area 15
- Base View 18
- (out-of-range left margin) 19
- (out-of-range top margin) 19
- 1.2.3 Common 20
- 1.2.3.5 Acoustic Noise 21
- 1.2.3.6 CE Marking 21
- 1.3 Interface 22
- 1.3.2 Standard Card Slots 23
- 1.4 Stand-alone Copy 25
- 1.4.2 Copy Speed 26
- 1.5 Memory Card Print 30
- 1.5.2 Functions 31
- 1.5.3 Index Sheet 33
- 1 2 3 1 2 3 35
- 1.5.5 Options 36
- 1.5.6 Trimming Function 36
- Rotation 37
- 1.5.8 Layout Drawings 38
- 1.5.8.3 20-up 39
- 1.5.8.4 80-up 39
- 1.6 Control Panel 41
- 1.6.3 Operations 43
- Table 1-44. Operations 44
- 1.6.3.3 Low Power Panel Mode 45
- 1.6.5 Memory Functions 50
- 1.6.6 Printer Initialization 51
- OPERATING PRINCIPLES 52
- 2.1 Overview 53
- 2.2 Printer Mechanism 53
- 2.2.2 Print Head 54
- 2.2.2.1 Printing Process 55
- 2.2.2.2 Printing Method 55
- 2.2.3 Carriage Mechanism 56
- 2.2.5 Ink System Mechanism 63
- 2.2.5.1 Capping Mechanism 64
- 2.2.5.2 Pump Unit Mechanism 65
- 2.2.6 Ink Sequence 66
- 2.3 Scanner Mechanism 68
- 2.4.1 PSB/PSE Board 71
- 2.4.2 C571/577 Main Board 72
- 2.4.2.3 Motor Driver Circuit 75
- 2.4.2.4 Combination Circuit 76
- 2.4.2.5 Sensor Circuit 77
- • PW Sensor 78
- TROUBLESHOOTING 79
- °C / phase) 80
- (only for Stylus 82
- CX4500/CX4600) 82
- 3.3 Troubleshooting 85
- Torsion Spring 19.01 88
- PG Sensor 88
- Document Glass 89
- Compression Spring 91
- Extension Spring 0.143 92
- Clutch tooth 92
- Memory Chip 94
- Connector 94
- Head FFC 94
- CSIC Connectors 94
- CSIC Board 94
- Spring 0.22 95
- PE Sensor Lever 95
- PE Sensor 95
- EJ Frame Unit 96
- EJ Roller UnitSpur Gear 36 96
- Star Wheel Holders 97
- Scanner Motor 98
- Connector Cable 98
- Scanner HP Sensor 99
- Scanner Carriage FFC CN11 99
- Compression Spring 2.36 101
- Change Lever 101
- Paper Guide Upper Unit 101
- Slit of the CR 102
- Encoder Board 102
- CR Scale 102
- Encoder FFCCR Encoder Board 102
- PF Encoder Sensor 103
- PE Sensor Connector CableCN3 103
- PF Scale 103
- Slider Lock Lever 104
- Extension Spring Retard 105
- Seal rubber part 107
- Compression 107
- Spring 1.47 107
- CR movement 110
- PF Roller Unit 110
- LD Roller 111
- Paper Guide Front Unit 111
- Porous Pad Paper Guide Front 111
- DISASSEMBLY AND ASSEMBLY 113
- W ARNING 114
- 4.1.2 Tools 115
- 4.1.3 Work Completion Check 116
- 4.3 Disassembly 118
- 4.3.1 Document Cover 119
- 4.3.2 Paper Support Assy 120
- 4.3.3 Stacker Assy 120
- 4.3.4 Scanner Unit 121
- ADJUSTM ENT 124
- REQUIRED 124
- 4.3.5 Panel Unit 126
- 4.3.6 Housing Upper 127
- 4.3.7 Print Head 128
- 4.3.8 Printer Mechanism 130
- 4.3.11 Main Board Unit 136
- 4.3.12 ASF Unit 141
- 4.3.13 Holder Shaft Unit 143
- 4.3.14 CR Guide Frame 146
- 4.3.16 PF Motor 148
- 4.3.17 Carriage Unit 149
- 4.3.20 EJ Frame Unit 154
- 4.3.21 Ink System Unit 156
- 4.3.24 PF Roller Unit 159
- ADJUSTMENT 161
- 5.1 Overview 162
- • Platen Gap adjustment 163
- 5.2.1 EEPROM Data Copy 164
- 5.2.2 Waste ink pad counter 164
- 5.2.3.2 USB ID 165
- OK pattern 166
- NG pattern 166
- 5.2.11 Bi-D adjustment 167
- 5.2.12 PW adjustment 167
- 5.2.15 Print check pattern 168
- 5.3.1 PG adjustment 170
- Note : “Down” means PG 171
- (Platen Gap) wide 171
- MAINTENANCE 174
- 6.1 Overview 175
- MAINTENANCE Overview 176 176
- 6.1.3 Lubrication 177
- MAINTENANCE Overview 178 178
- MAINTENANCE Overview 179 179
- MAINTENANCE Overview 180 180
- APPENDIX 181
- 7.1 Connector Summary 182
- Table 7-3. CN3 - PE Sensor 183
- Table 7-4. CN4 - PG Sensor 183
- Table 7-5. CN5 - Print Head 183
- Table 7-6. CN6 - Print Head 183
- Table 7-7. CN7 - Print Head 184
- Table 7-8. CN8 - CR Motor 184
- Table 7-9. CN9 - PF Motor 184
- 7.2 Component Layout 188
- APPENDIX Component Layout 189 189
- APPENDIX Component Layout 190 190
- APPENDIX Component Layout 191 191
- 7.3 Exploded Diagram 192
- APPENDIX Exploded Diagram 193 193
- Rev.01 MECH01 194
- Rev.01 MECH02 195
- Rev.01 MECH03 196
- 7.4 Parts List 197
- APPENDIX Parts List 198 198
- 7.5 Electrical Circuits 199
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