Epson Stylus CX8400 Service Manual Page 53
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EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C
OPERATING PRINCIPLES Overview 53
Confidential
2.1.6.3 Wiping Mechanism
The wiping mechanism is activated by the capping operation. The mechanism moves the wiper into- and out-of position for cleaning the head using the PF motor drive force that is
transmitted via the cam of the clutch-equipped combination gear.
Figure 2-17. Wiping Mechanism
Non cleaning state
(clutch disengaged)
PF motor CW rotation: Moves the Wiper Upward
PF motor CCW rotation: Moves the Wiper Downward
Cap SliderCam
Clutch-equipped combination gear
Groove of
cam (1)
Wiper protrusion
Cap Slider protrusion
Groove of
cam (1)
Wiper protrusion
When the cap slider pops up, its protrusion is disengaged from the groove of cam (2).
Therefore, the clutch is engaged causing the cam to rotate together with the combination
gear.
The clockwise rotation of the PF motor rotates the cam in clockwise direction
to move the wiper upward to clean the head.
The counterclockwise rotation of the PF motor rotates the cam in counterclockwise
direction to move the wiper downward, which is out-of position for cleaning.
Groove (2) of the cam is designed so that the cap slider
protrusion cannot be set into the groove unless the wiper is
moved downward. This prevents the slider protrusion from
being engaged with the groove when the slider is moved
downward without the wiper moved downward.
Groove of
cam (2)
Cap Slider protrusion
Wiper
protrusion
Wiper
protrusion
In the non-cleaning state, the cap slider protrusion secures the cam and the clutch of
the combination gear is disengaged. Therefore, the PF motor drive force is not
transmitted to the cam.
Groove of
Groove of cam (2)
Cleaning state
(clutch engaged)
- SERVICE MANUAL 1
- PRECAUTIONS 3
- About This Manual 4
- Revision Status 5
- Contents 6
- Chapter 6 MAINTENANCE 7
- Chapter 7 APPENDIX 7
- Chapter 5 ADJUSTMENT 7
- PRODUCT DESCRIPTION 8
- 1.1 Features 9
- 1.2 Printing Specifications 10
- (H x V dpi) 11
- 1.2.4 Supported Paper 13
- 1.2.5 Printing Area 15
- 1.3 Scanner Specifications 15
- 1.3.1 Scanning Range 15
- (1 msec or less) 16
- (2 msec or less) 16
- 1.5 Interface 17
- 1.5.2 Memory Card Slots 18
- 1.6 Control Panel 19
- 1.7.1.4 Copy Speed 30
- 1.7.2.7 Print Layout 34
- <Borderless> 35
- <With Border> 35
- Paper top edge 35
- (USB Direct Print/PictBridge) 36
- USB Direct Print 37
- PictBridge 37
- 1.7.5 Setup Mode 39
- 1.7.5.8 Head Alignment 40
- OPERATING PRINCIPLES 41
- 2.1 Overview 42
- 2.1.2 Motors & Sensors 43
- 2.1.3 Printhead 44
- 2.1.3.1 Printing Process 45
- 2.1.3.2 Printing Method 45
- Carriage Unit 46
- Main Frame 46
- Timing Belt 46
- 2.1.5.2 Paper Feed Mechanism 51
- 2.1.6 Ink System Mechanism 52
- 2.1.6.3 Wiping Mechanism 53
- 2.1.6.4 Pump Unit Mechanism 54
- 2.1.7 Ink Sequence 55
- 2.2 Scanner Mechanism 56
- TROUBLESHOOTING 58
- W A R N I N G 59
- 3.2 Troubleshooting 60
- Scanner Carriage FFC 66
- Scanner Carriage Unit 66
- Compression Spring 2.36 68
- Change Lever 68
- Upper Paper Guide Unit 68
- Slit of the CR Encoder Board 69
- CR Scale 69
- CR Encoder BoardEncoder FFC 69
- PF Scale PF Encoder Sensor 70
- PE Sensor 70
- Connector Cable 70
- Paper Back Lever 71
- Extension Spring 6.4 71
- Extension Spring Retard 71
- Backside of ASF Unit 71
- Star Wheel Holder Assy 72
- Star Wheel Holders 72
- EJ Roller Unit 72
- Document Glass 78
- Backside of ASF 79
- Extension Spring 6.45 79
- Panel FFC 80
- PS Board 81
- Power Unit Cable 81
- PS Board Unit 81
- Seal rubber part 85
- Compression 85
- Spring 1.67 85
- CR movement 87
- PF Roller Unit 87
- LD Roller 88
- Front Paper Guide Unit 88
- Porous Pad Front Paper Guide 88
- Star Wheels 89
- DISASSEMBLY/ASSEMBLY 90
- 4.1.2 Tools 92
- 4.1.3 Work Completion Check 92
- Panel Unit 94
- LCD Unit 94
- 4.2 Disassembly Procedures 95
- Paper Support Assy 96
- Guide Pins 96
- Stacker Assy 96
- Document Cover 97
- ASF Cover 97
- 4.3.4 Scanner Unit/Hinge 98
- Confidential 100
- 4.4.1 Main Board Unit 101
- 4.4.2 Panel Unit/LCD Unit 103
- 4.4.3 Power Supply Unit 105
- 4.5.1 Printhead 107
- 4.5.2 CR Scale 109
- 4.5.3 Hopper 110
- 4.5.5 Left Frame 113
- 4.5.7 Star Wheel Holder Assy 116
- 4.5.8 EJ Roller 116
- 4.5.9 PF Encoder Sensor 117
- 4.5.10 PF Scale 118
- 4.5.11 PF Motor 119
- 4.5.12 CR Motor 120
- 4.5.13 Main Frame Assy 122
- 4.5.14 CR Unit 124
- 4.5.15 Upper Paper Guide 126
- 4.5.16 ASF Unit 126
- 4.5.17 Ink System Unit 128
- Waste Ink Tube 130
- Tube Stopper 130
- 4.5.18 Front Paper Guide 131
- 4.5.19 PF Roller 132
- 4.5.20 Waste Ink Pads 133
- 4.6.2 Scanner Carriage Unit 135
- Scanner Timing Belt 137
- Torsion Spring 137
- Scanner CR Holder 137
- 4.6.3 Scanner Motor Unit 138
- Stylus CX7300/TX200 series 139
- ADJUSTMENT 141
- C H E C K 142
- P O I N T 142
- 5.1.2 Required Adjustments 144
- 5.2.1 TOP Margin Adjustment 146
- 5.2.4 Bi-D Adjustment 148
- 5.2.5 PF Adjustment 148
- 34 56 782 149
- MAINTENANCE 151
- C A U T I O N 152
- Driven Pulley 153
- MAINTENANCE Overview 154 154
- MAINTENANCE Overview 155 155
- MAINTENANCE Overview 156 156
- MAINTENANCE Overview 157 157
- APPENDIX 158
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