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Motor rotates in
the normal direction
Unit moves forward
Motor rotates in
the reverse direction
Unit moves backward carriage
glass
MOTOR DRIVE
signals
Optical unit motor
Optical unit home position
detection sensor
Optical unit
Motor
Optical unit
motor drive circuit
CPU
MOTOR CONTROL
signals
Sensor flag
Figure 4-3 Optical assembly
The image data is collected on the scanner controller board, where it is processed and sent to the
formatter.
ENWW Flatbed unit and ADF system 31
- HP 9250C Digital Sender 1
- HP Digital Sender 9250c 3
- Table of contents 5
- List of tables 11
- List of figures 13
- 1 Device information 17
- Device information 18
- ENWW Device information 3 19
- Software features 21
- Device parts 22
- ENWW Device parts 7 23
- Use the control panel 24
- ENWW Use the control panel 9 25
- Device software 26
- Paper handling 27
- Chapter contents 29
- Prepare the site 30
- System requirements 30
- Unpack the device 31
- 3 Maintenance 33
- Replace supplies and parts 34
- Clean the device 36
- 5. Close the scanner lid 37
- ENWW Clean the device 21 37
- Clean the ADF rollers 38
- 4 Theory of operation 41
- Basic operation 42
- Formatter system 43
- Engine control system 44
- Flatbed unit and ADF system 45
- Motors and fans 46
- Optical assembly 46
- Figure 4-3 Optical assembly 47
- ADF feed system 48
- Residual-media jam 49
- ADF pickup jam 49
- ADF cover-open jam 49
- ADF open jam 49
- 5 Removal and replacement 51
- Required tools 52
- Before performing service 52
- After completing service 53
- User-replaceable parts 54
- Separation pad 55
- 4. Remove the separation pad 56
- Pickup-roller cover 57
- Pickup roller assembly 59
- Mylar-holder assembly 60
- ADF mylar shield 62
- Control panel 63
- Control-panel overlays 64
- Formatter cage 65
- Hard-disk drive 66
- Hard-disk drive cables 67
- Memory DIMM 68
- Hinge flaps 69
- Paper input tray 70
- Keyboard 72
- Control-panel lower cover 74
- Control-panel upper cover 75
- Control-panel cover assembly 76
- External control-panel cable 79
- Output bin paper lever 81
- ADF right cover 82
- ADF right-corner cover 84
- ADF left cover 85
- ADF left-corner cover 87
- ADF rear cover 88
- Scanner right cover 89
- Scanner left cover 90
- Scanner front cover 91
- Scanner rear cover 92
- Right hinge cover 93
- Left hinge cover 94
- Upper hinge cover 95
- Internal components 96
- ENWW Internal components 81 97
- ADF jam access latch 99
- Right hinge guide 100
- Left hinge guide 101
- Fan filter 104
- ENWW Internal components 89 105
- 8. Remove the ADF cable 107
- ENWW Internal components 91 107
- Separation pad case 108
- Clear plastic paper guide 109
- White scan background 110
- Scanner controller board 111
- Flatbed scanner assembly 112
- ENWW Internal components 97 113
- Power supply 115
- Keyboard cable 118
- Power-switch assembly 121
- Scanner base fan 122
- Power plug 124
- SCB cable 125
- Internal control-panel cable 126
- 6 Troubleshooting 127
- Troubleshooting checklist 128
- Power-on checks 129
- Control-panel messages 130
- ADF mylar shield on page 46 138
- ENWW Operational issues 123 139
- ENWW Operational issues 125 141
- HP Jetdirect LEDs 142
- Formatter LED 142
- Clear jams 143
- Solve repeated jams 144
- Calibrate the scanner 145
- To calibrate the scanner 146
- Calibrating the control panel 147
- Resolve e-mail problems 149
- Verifying an SMTP address 150
- Error codes 151
- LAN diagnostics 151
- To enable or disable the LAN 153
- Connectivity problems 154
- Service-mode functions 156
- Disk initialization 157
- Service menu 158
- Features 159
- View the EWS Web pages 159
- Information pages 160
- Settings pages 160
- Digital sending pages 161
- Networking pages 161
- LED test 162
- Display test 163
- Buttons test 163
- Touchscreen test 163
- Upgrade the firmware 164
- ENWW Upgrade the firmware 151 167
- Troubleshooting diagrams 168
- Scanner/Controller PCA 169
- Parts used in troubleshooting 170
- 7 Parts and diagrams 173
- Ordering parts and supplies 174
- Table 7-1 Common fasteners 175
- 3 User Guide CD CB472-60141 177
- Figure 7-4 Maintenance kits 182
- Table 7-5 Maintenance kits 183
- Figure 7-5 Memory 184
- Table 7-6 Memory 185
- ADF components 186
- Table 7-7 ADF Assembly 187
- Figure 7-7 ADF base assembly 188
- Table 7-8 ADF base assembly 189
- ENWW ADF components 175 191
- ENWW ADF components 177 193
- ENWW ADF components 179 195
- ENWW ADF components 181 197
- Figure 7-12 ADF left cover 198
- Table 7-13 ADF left cover 199
- ENWW ADF components 185 201
- Scanner and bottom assemblies 202
- Table 7-15 Scanner assembly 203
- Figure 7-16 Power plug 206
- Table 7-17 Power plug 207
- Figure 7-17 Top formatter 208
- Table 7-18 Top formatter 209
- Figure 7-18 Fan assembly 210
- Table 7-19 Fan assembly 211
- Table 7-20 Keyboard assembly 213
- 1 Screw, M3x12 030120FNWSNI 3 215
- 2 Fan filter IR4041P007NI 1 215
- Alphabetical parts list 218
- Numerical parts list 224
- ENWW Numerical parts list 209 225
- ENWW Numerical parts list 211 227
- ENWW Numerical parts list 213 229
- A Service and support 231
- HP PRODUCT 233
- DURATION OF WARRANTY 233
- HP maintenance agreements 234
- B Specifications 235
- Table B-5 Acoustic emissions 237
- C Regulatory information 239
- FCC regulations 240
- Protecting the environment 241
- Ozone production 241
- Power consumption 241
- Plastics 241
- Material restrictions 241
- European Union 242
- For more information 242
- Declaration of conformity 243
- Canadian DOC regulations 244
- VCCI statement (Japan) 244
- EMI statement (Korea) 244
- CB472-90938 250
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