Image Access WideTEK 42 Assembly instructions

Manual
This device is compliant.
This device is compliant.

Manual Page 3
2007 – 2014 by Image Access GmbH, Wuppertal, Germany.
Printed in Germany. All rights reserved.
Reproduction in
whole or in part in any form or medium without express written permission of
Ima
ge Access is prohibited.
Scan2Net
®, WideTEK®and Bookeye®are registered trademarks of Image Access.
All other trademarks are the property of their respective owners.
Image Access reserves the right to change the described products, the specifications or
documents at any time without prior notice.
For the most recent version, always check our web site
www.imageaccess.de
or
www.imageaccess.us or the customer service portal at portal.imageaccess.de

Page 4 Manual
Introduction
Dear Customer,
We congratulate you on the acquisition of this innovative product from Image Access.
We at Image Access are proud of the work we do; it is the result of our extremely high
standards of production and stringent quality control.
With the WideTEK 42/WideTEK 48, Image Access offers an efficient scanner which
covers a wide scope of applications due to its versatility. Its integrated web based user
interface makes all functions available in structured menus.
This operation manual is designed to lead you through all situations which will arise
when using the WideTEK 42/WideTEK 48.
For this reason, we ask you to read the manual attentively before starting to work with
the WideTEK 42/WideTEK 48. By doing so, you will avoid operation errors and you can
control all functions from the beginning.
In addition please consider the following points:
•Damages to your unit may have occurred during shipping. Please check for
damages immediately after delivery of the unit. Inform your supplier if damage
has occurred.
•Read and ensure that you understand the safety notes. They were developed
for your protection and safety as well as to protect the unit.
•Regular maintenance conserves the high quality and safety of the scanner
during the entire service life.
If you have any further questions, please feel free to contact your local dealer or
Image Access, Inc. directly. Our staff will be happy to help you.
For your daily work with the WideTEK 42/WideTEK 48 scanner, we wish you success
and complete satisfaction.
Regards
Your Image Access Team

Manual Page 5
About this Manual
Operation Manual
The Operation Manual gives all information about the normal operation and behavior
of the device. It is written for people who only operate the device and do not perform
setup and adjustment procedures. All device elements and software functions are
described in detail, although some of them might never be used. This manual does not
cover any application software. Refer to the appropriate application software manual to
learn about the application software.
Setup and Assembly Manual
The Setup and Assembly Manual is written for technical staff with some basic
mechanical as well as software skills. Many resellers will offer on-site installation;
therefore, large parts or all of the setup and assembly manual might not be of interest
to the reader. The access level at which the setup and adjustment processes are
performed is called “Power user”. This “Power user” level is password protected from
access by the normal operator.
The current version of all manuals can be downloaded from our customer service portal
at portal.imageaccess.de. Be sure to always check for the latest versions of these
manuals.
This manual is divided into the sections A to E.
Section A describes the hardware of the device and gives an overview of all
components and connectors of the scanner. It includes the installation
and set-up of hardware components. Remember that this device is a
precise optical instrument and should be handled accordingly.
Note: As an option the WideTEK 42/WideTEK 48 can be delivered with an
appropriate floor stand. It is recommended to always use the scanner in
combination with the floor stand.
Section B describes the functions of the touchscreen and how to operate the
scanner with the touchscreen.
Section C describes the functions of the integrated Scan2Net interface.
Section D describes test and troubleshooting procedures.
Section E contains all technical data of the scanner and the manufacturer
declarations concerning safety and electromagnetic compatibility (EMC).

Page 6 Manual
Version History
Version
Published in
Content/Changes/Supplements
A February 2008 Preliminary release version.
Because of the preliminary status of this manual some variations
in the screenshots of the S2N user interface are possible.
B
May 2008
First release.
Describes the functions and features of S2N firmware version 5.
C June 2008 Firmware V 5.
An important note added to chapter A.13.1 and A.13.2
concerning
powering the scanner on and/or off in the correct way.
…
…
H August 2010 Previous chapter A.6 split in chapters A.6 and A.7.
Previous chapter A.7and all following A.x chapters renumbered.
Chapter A.8 “Content of Delivery” corrected.
New: Chapter A.10 “Adjusting
the Middle Guide Plate…”. Prev.
chapter A.10 and all following A.x chapters renumbered.
Chapter A.13.8: Content of touchscreen has been split on two
screens, new sub-chapters added.
…
…
I2
December 2011
Update Technical Data.
K
April 2012
Update of Output Options, chapter renumbered. Additional
Information concerning the use of special printer types.
K2
November 2012
Chapter C.2.4 and C.2.5 updated
February 2013
Update Copyright notes.
K3 May 2013 Update of device logo, technical data update, and minor
texts
updates.
K3b
May 2014
New device picture at title page.
As an ENERGY STAR® Partner, Image
Access has determined that this product
meets the ENERGY STAR® guidelines for energy efficiency.

Manual Page 7
Table of Content
Introduction--------------------------------------------------------------------------4
About this Manual -----------------------------------------------------------------5
Version History ---------------------------------------------------------------------6
AHardware ----------------------------------------------------------------------- 15
A.1 Safety Notes.............................................................................................15
A.1.1 Marking of Safety Notes 15
A.2 Certification...............................................................................................15
A.3 General Notice..........................................................................................15
A.4 Safety Precautions....................................................................................16
A.5 Device Location........................................................................................17
A.6 Maintenance and Repair...........................................................................18
A.6.1 Touchscreen 18
A.6.2 Surfaces 18
A.6.3 Glass plate 18
A.7 Repair.......................................................................................................18
A.8 Content on Delivery..................................................................................19
A.9 Connecting to the Power Source..............................................................20
A.9.1 Connectors on the Scanner 21
A.10 Adjusting the Middle Guide Plate..............................................................22
A.11 Paper Transport Wings.............................................................................25
A.11.1 How to insert the Paper Transport Wings 26
A.11.2 Position of the Paper Transport Wings 27
A.11.3 Scanning documents on light, thin paper material 28
A.11.4 Scanning documents on normal or heavier paper 29
A.12 Connecting an External Monitor................................................................30
A.13 Powering up the WideTEK 42/WideTEK 48..............................................32
A.13.1 Starting the scanner from Stand-By Mode 32
A.13.2 Turning-off the scanner 33
A.13.3 The Help Function 33

Page 8 Manual
Table of Content, part 2
BTouch Panel Operation---------------------------------------------------- 34
B.1 WideTEK 42/WideTEK 48 Touch Panel................................................... 34
B.1.1 Navigating through the Screens 34
B.2 How to Enter or Change Values............................................................... 35
B.3 Self Test Mode......................................................................................... 36
B.3.1 IP Address 37
B.3.2 White Balance 38
B.3.3 Lamp On / Off 38
B.3.4 Exit Selftest 38
B.3.5 Touch Adjust 39
B.3.6 Touch Test 39
B.3.7 Stitch Test 40
B.3.8 EMV Test 40
B.3.9 Sensor Test 41
B.3.10 Shutdown Scanner 41
B.4 Start Menu Screen................................................................................... 42
B.4.1 Output Control Screens 43
B.4.1.1 Output Control 1 43
B.4.1.1.1 Viewer Control 43
B.4.1.1.2 Email Address 44
B.4.1.1.3 FTP Server 45
B.4.1.1.4 Windows Network 46
B.4.1.2 Output Control 2 47
B.4.1.2.1 Sound Control 47
B.4.2 Image Control Screen 48
B.4.2.1 Image Control 1 48
B.4.2.1.1 Brightness 48
B.4.2.1.2 Contrast 48
B.4.2.1.3 Gamma 48
B.4.2.1.4 Sharpness 49
B.4.2.1.5 Resolution 49
B.4.2.1.6 Color mode 49
B.4.2.2 Image Control 2 50
B.4.2.2.1 Threshold (only in Binary mode) 50
B.4.2.2.2 Despeckle (only in Binary mode) 50
B.4.2.2.3 Invert (only in Binary and Photo mode) 50
B.4.2.2.4 Stitching 51
B.4.2.2.5 ICC Profile 51
B.4.2.3 Image Control 3 52
B.4.2.3.1 Exposure 52
B.4.2.3.2 Exp. Black 52

Manual Page 9
Table of Content, part 3
B.4.3 Format Control Screen 53
B.4.3.1 Format Control 1 53
B.4.3.1.1 Format 53
B.4.3.1.2 Start Page 53
B.4.3.1.3 Rotation 53
B.4.3.1.4 Mirror 53
B.4.3.1.5 Splitting 53
B.4.3.2 Format Control 2 54
B.4.3.2.1 Auto margin 54
B.4.3.2.2 Auto density 54
B.4.3.2.3 Auto skew 54
B.4.3.3 Format Control 3 55
B.4.3.3.1 Top edge 55
B.4.3.3.2 Bottom edge 55
B.4.3.3.3 Units 55
B.4.3.3.4 Left edge 55
B.4.3.3.5 Right edge 55
B.4.4 File Control Screen 56
B.4.4.1 JPEG 56
B.4.4.2 TIFF 57
B.4.4.3 PNM 57
B.4.4.4 PDF 58
B.4.5 Transport Control Screen 59
B.4.5.1 Start button 59
B.4.5.2 Transport 59
B.4.5.3 Scan mode 59
B.4.5.4 Feeder delay 60
B.4.5.5 Doc. Output 60
B.4.6 Job 61
B.4.6.1 Creating a Job 61
B.4.6.2 Selecting a Job 63
B.4.6.3 Deleting a Job 64
B.4.7 Software Option: Scan2VGA 65

Page 10 Manual
Table of Content, part 4
CSoftware ------------------------------------------------------------------------ 66
C.1 The Integrated User Interface.................................................................. 66
C.2 The Main Screen...................................................................................... 67
C.2.1 The Options Screen 69
C.2.2 The Properties Screen 71
C.2.3 The Camera Screen 76
C.2.3.1 Threshold Dynamic / Threshold Fixed 78
C.2.3.2 Despeckle 78
C.2.4 The Settings Screen 79
C.2.5 The Format Screen 82
C.2.5.1 Virtual Rescan 84
C.3 Output Options......................................................................................... 85
C.3.1 Output Option Save 86
C.3.2 Output Option Show 87
C.3.3 Output Option Multipage 88
C.3.4 Output Option Print 90
C.3.5 Output Option Copy 91
C.3.5.1 Remote Printer 91
C.3.5.2 Printing Enhancement 93
C.3.5.3 Accounting 94
C.3.5.4 Extended print parameters with iPF option installed 95
C.3.5.5 Printing Enhancements with iPF option installed 96
C.3.6 Output Option FTP Upload 97
C.3.6.1 FTP Server 97
C.3.7 Output Option Mail 99
C.3.7.1 Mail Server 99
C.3.7.2 Transaction mode interactive 101
C.3.7.3 Deleting the address list 101
C.3.7.4 Configuring the LDAP Directory Service 102
C.3.8 Output Option Network 103
C.3.8.1 SMB Configuration 104
C.3.9 Output Option Web 105
C.3.9.1 Web Service Configuration 106
C.3.10 Output Option USB 108
C.3.10.1 USB Storage Device 109
C.3.10.2 List of suitable USB storage media 109

Manual Page 11
Table of Content, part 5
C.4 Information..............................................................................................110
C.5 The Setup Screen...................................................................................111
C.5.1 Login Screen 111
C.5.2 Access Level User 112
C.5.2.1 Device Info Screen 113
C.5.2.2 Operation Info Screen 114
C.5.2.3 User Settings Screen 115
C.5.2.3.1 Language Selector 116
C.5.2.3.2 Power Saving 117
C.5.2.3.3 Volume 118
C.5.2.3.4 Foot Pedal 119
C.5.2.3.5 Splitting Start Page 120
C.5.2.3.6 Guide Plate Middle 121
DTests and Troubleshooting ---------------------------------------------122
D.1 Troubleshooting Matrix...........................................................................122
D.2 Error Codes............................................................................................123
D.3 Warnings ................................................................................................126
D.4 Information..............................................................................................126
ETechnical Data---------------------------------------------------------------127
E.1 Scanner Specifications...........................................................................127
E.2 Ambient Conditions.................................................................................127
E.3 Electrical Specifications..........................................................................128
E.4 Dimensions and Weight..........................................................................128
E.5 CE Declaration of Conformity.................................................................129
E.6 FCC Declaration of Conformity...............................................................130

Page 12 Manual
Table of Pictures
Picture 1: Minimum distance to the scanner....................................................................17
Picture 2: Transport box opened .....................................................................................19
Picture 3: Connectors at WideTEK 42/WideTEK 48 ........................................................21
Picture 4: Middle guide plate...........................................................................................22
Picture 5: Allen head screw in slot hole...........................................................................23
Picture 6: Removing the middle guide plate.....................................................................23
Picture 7: Self locking nut on the bottom side of middle guide plate ................................24
Picture 8: Black paper transport wing..............................................................................25
Picture 9: Snap lock on left side of the housing...............................................................25
Picture 10: Bending the paper transport wing..................................................................26
Picture 11: Inserting at the front.......................................................................................26
Picture 12: Position of paper transport wings...................................................................27
Picture 13: Detailed view on position 2 and 3 of the paper transport wings......................27
Picture 14: Position for light paper weights......................................................................28
Picture 15: Inserting at the back......................................................................................29
Picture 16: Position for normal and high paper weights...................................................29
Picture 17: Position of VGA connector.............................................................................30
Picture 18: VGA connector beside gap............................................................................30
Picture 19: Guiding into the scanner................................................................................30
Picture 20: Guiding the cable to the connector................................................................31
Picture 21: VGA connector inserted.................................................................................31
Picture 22: Start menu screen.........................................................................................32
Picture 23: Touch panel while shut down in progress......................................................33
Picture 24: Keyboard with capital letters..........................................................................35
Picture 25: Keyboard with lower case letters...................................................................35
Picture 26: Self Test 1.....................................................................................................36
Picture 27: Self Test 2.....................................................................................................36
Picture 28: Network setup ...............................................................................................37
Picture 29: Numeric key pad ...........................................................................................37
Picture 30: Confirm changes ...........................................................................................37
Picture 31: Insert control sheet........................................................................................38
Picture 32: Results of White Balance...............................................................................38
Picture 33: Testing the touch screen ...............................................................................39
Picture 34: Stitch Test screens........................................................................................40
Picture 35: Sensor status ................................................................................................41
Picture 36: Start menu screen.........................................................................................42
Picture 37: Document transport controls..........................................................................42
Picture 38: Output Control 1............................................................................................43
Picture 39: Viewer Control...............................................................................................43
Picture 40: E-mail address parameters............................................................................44

Manual Page 13
Table of Pictures, part 2
Picture 41: Ftp Server 1...................................................................................................45
Picture 42: Ftp Server 2...................................................................................................45
Picture 43: Network parameters.......................................................................................46
Picture 44: Input a Network Address................................................................................46
Picture 45: Output Control 2.............................................................................................47
Picture 46: System events and sound files.......................................................................47
Picture 47: Image Control 1 .............................................................................................48
Picture 48: Image Control 2 .............................................................................................50
Picture 49: Image Control 3 .............................................................................................52
Picture 50: Format Control 1............................................................................................53
Picture 51: Format control 2.............................................................................................54
Picture 52: Format Control3.............................................................................................55
Picture 53: File Control ....................................................................................................56
Picture 54: Transport control............................................................................................59
Picture 55: List of available jobs.......................................................................................61
Picture 56: Keyboard of input screen...............................................................................61
Picture 57: Creating a job ................................................................................................62
Picture 58: Entering the password ...................................................................................62
Picture 59: Number of password elements.......................................................................62
Picture 60: Selecting a job from the list............................................................................63
Picture 61: Request for password....................................................................................63
Picture 62: Confirming to delete the job ...........................................................................64
Picture 63: Enter password to delete job..........................................................................64
Picture 64: Touchpanel after scanning.............................................................................65
Picture 65: Start screen ...................................................................................................66
Picture 66: Main screen...................................................................................................67
Picture 67: Shutdown confirmation...................................................................................68
Picture 68: Options screen............................................................................................69
Picture 69: Properties screen........................................................................................71
Picture 70: 24Bit Color, File Format: PNM .......................................................................72
Picture 71: Binary, File Format: TIFF with G4 compression .............................................72
Picture 72: Format list......................................................................................................74
Picture 73: Additional Margin/Auto Density slider.............................................................74
Picture 74: Set deskew angle...........................................................................................75
Picture 75: Document edges............................................................................................75
Picture 76: Camera screen...........................................................................................76
Picture 77: Exposure control slider...................................................................................77
Picture 78: Threshold method selector.............................................................................78
Picture 79: Despeckle function.........................................................................................78
Picture 80: Settings screen...........................................................................................79

Page 14 Manual
Table of Pictures, part 3
Picture 81: Available skins...............................................................................................80
Picture 82: Scan status window.......................................................................................80
Picture 83: OCR languages.............................................................................................81
Picture 84: Format screen............................................................................................82
Picture 85: Rectangle dragged with mouse .....................................................................83
Picture 86: "Zoom in" result.............................................................................................83
Picture 87: List of available clip size formats ...................................................................84
Picture 88: Output options bar.........................................................................................85
Picture 89: Output Option Save.......................................................................................86
Picture 90: Example for file name....................................................................................86
Picture 91: Output Option Show......................................................................................87
Picture 92: Output Options in Scan Window....................................................................87
Picture 93: Output Option Multipage................................................................................88
Picture 94: Pop-up window to select images for the “Container”......................................89
Picture 95: Output Option Print........................................................................................90
Picture 96: Available List of Printers for Option Print .......................................................90
Picture 97: Output Option Copy.......................................................................................91
Picture 98: Output Option FTP Upload............................................................................97
Picture 99: Output Option Mail.........................................................................................99
Picture 100: Parameters for transaction mode “interactive” ...........................................101
Picture 101: Recipient address list opened....................................................................101
Picture 102: LDAP Directory Service parameters..........................................................102
Picture 103: Output Option Network..............................................................................103
Picture 104: Output Option Web....................................................................................105
Picture 105: Output Option USB....................................................................................108
Picture 106: USB stick inserted in USB connector.........................................................108
Picture 107: Information ................................................................................................110
Picture 108: Login screen..............................................................................................111
Picture 109: User screen...............................................................................................112
Picture 110: Device Info screen.....................................................................................113
Picture 111: Operation Info screen................................................................................114
Picture 112: Available user settings...............................................................................115
Picture 113: Language Selector screen.........................................................................116
Picture 114: List of power down times...........................................................................117
Picture 115: Volume level..............................................................................................118
Picture 116: Foot pedal settings....................................................................................119
Picture 117: Splitting Start Page....................................................................................120
Picture 118: Guide Plate Middle....................................................................................121

Manual Page 15
A Hardware
A.1 Safety Notes
Read and ensure that you understand the safety notes.
They are designed for your protection and for your safety.
Follow all safety notes to avoid damage to the device.
A.1.1 Marking of Safety Notes
All safety notes are marked with a yellow triangle warning sign.
Next to the warning sign, you’ll find a description of the danger.
Safety Note!
Example text.
A.2 Certification
The WideTEK 42 and WideTEK 48 scanners fulfill all requirements of the following
standards:
IEC 60950-1, International Safety Standard for Information Technology Equipment
UL 60950-1, Safety for Information Technology Equipment (US standard)
CAN/CSA C22.2 No.60950-1, Safety for Information Technology Equipment
(Standard for Canada)
EN 60950-1, Safety for Information Technology Equipment (European standard)
A.3 General Notice
This manual describes the functions of complete equipped WideTEK 42 and WideTEK 48
scanners. If your device is not equipped with all features, deviations are possible.

Page 16 Manual
A.4 Safety Precautions
Warning: Please read all the safety precautions before you operate the scanner. Serious
injury can occur to you or to others if you do not know how to use it safely.
To prevent fire or shock hazard, do not expose
this device to rain
or any type of moisture.
Follow all safety precautions to avoid personal injury or damage to the device.
1. Place the scanner in a clean, well-ventilated room. Do not operate the scanner in an
area with poor ventilation.
2. Openings in the scanner’s housing in the front or at the back are provided for air
circulation. Do not cover or block the openings.
3. Do not place the scanner near a heat or cold emitting source such as a space heater,
furnace, or air conditioning unit.
4. Do not place the scanner near any devices or electrical boxes emitting high voltage.
5. Always place the scanner on a stable surface.
6. Do not lean on the scanner.
7. Do not place cups containing liquids or other such objects on top of the scanner or on
the scanner table. If liquid spills into the scanner it can cause damage. If this occurs,
turn the scanner off, unplug the power cord from the wall receptacle and contact the
Image Access Technical Support.
8. Do not put any objects into any scanner housing openings unless specifically
instructed to do so by Image Access Technical Support.
9. Do not disassemble the scanner. If there is a need to disassemble the scanner,
please contact the Image Access Technical Support.
10. Do not use the scanner if it has been physically damaged. If this occurs, turn the
scanner off, unplug the power cord from the wall receptacle and contact the
Image Access Technical Support.
11. The scanner should be used only with the power cord that is supplied with the
scanner. If you are unsure, please contact the Image Access Technical Support.
12. Image Access recommends plugging the scanner into an appropriately-rated power
conditioner.
13. Always turn the power off and unplug the power cord from the wall receptacle before
cleaning the scanner.
14. When cleaning, only use Image Access-approved cleaners. Do not use any type of
solutions, abrasives, or acids such as acetone, benzene, kerosene, mineral spirits,
ammonia, or nitric acid. Do not use any cleaners that contain these chemicals.
15. Use a dry or damp lint free cloth for cleaning the scanner.
16. Do not spray any liquids directly onto the scanner. Spray cleaning fluids directly onto
the cleaning cloth and use the cloth to clean the scanner.

Manual Page 17
A.5 Device Location
Please allow a minimum of 150 mm (6 inch) from any side walls and 300 mm (12 inch)
from a back wall. Leave one meter (3 feet) minimum distance from any door or entrance
way. Use illustration below as a guide.
Picture 1: Minimum distance to the scanner
Do not operate the scanner in an area that has poor air circulation, and/or that is non-
ventilated.
Place the WideTEK 42/WideTEK 48 scanner on a flat and solid base. The load bearing
capacity of the base must correspond to the device weight.
It is recommended to place the scanner always on the floor stand which comes with the
scanner. The floor stand gives the best ergonomic position when using the scanner.
Choose a location that complies with the limits of temperature and humidity. Refer to the
technical specification.
Note: Before using the WideTEK 42/WideTEK 48 scanner in the new environment
allow at least one hour for temperature adaptation.
Temperature adaptation means:
A fast change from cold to warm environmental conditions can build up
condensation inside the housing. This will result in unfavorable scanned images
and could cause permanent damages to the unit.

Page 18 Manual
A.6 Maintenance and Repair
Important: Ensure that no liquids will penetrate into the device housing.
A.6.1 Touchscreen
Before cleaning the touchscreen, switch the WideTEK 42/WideTEK 48 off and set the
main power switch to position 0.
The touchscreen can be cleaned with a micro fiber cloth.
A.6.2 Surfaces
Use a soft, dampened cloth to clean the housing of the scanner. Recommended is a micro
fiber cloth.
A.6.3 Glass plate
Important: Do not use any cleanser with solvents to clean the glass plate!
The glass plate of the WideTEK 42/WideTEK 48 has a special surface coating.
It is recommended to clean the glass plate always with a micro fiber cloth.
Dampen the micro fiber cloth slightly before cleaning.
Clean the glass plate with minimum pressure. Do not rub the glass plate on isolated
positions.
After cleaning dry the glass plate with a soft cloth.
A.7 Repair
Note: There are not any parts or components of the WideTEK 42/WideTEK 48 scanner
which can be repaired by the user.
All repairs and service works should be done by a trained technician only.

Manual Page 19
A.8 Content on Delivery
The scanner is delivered in a wooden transport box. The transport box also contains the
disassembled floor stand in a separate cardboard box and the paper catch basket.
Picture 2 shows the opened transport box with all accessories.
Picture 2: Transport box opened
1: Paper catch basket
2: Scanner
3: Floor stand (optional) in separate cardboard box
4: Folder with reference targets, the White Balance reference sheet, and the manuals.
5: Box with cable set and accessories.
The cable set consist of:
Network cable. Connects the scanner to the network. All network parameters such as
IP address, subnet mask and gateway must be set via the front panel prior to the first
use.
Crossover cable. Connects the scanner directly to a computer via the network card.
Two power cables. US and European standard. Connects the scanner to the wall
outlet.
Note: Keep the wooden transport box and the cardboard box for future use! In case of
guarantee the scanner must be sent back in the original transport box to avoid
transport damages.

Page 20 Manual
A.9 Connecting to the Power Source
Before connecting the scanner to the electrical outlet check the following items:
Ensure the electrical outlet is in perfect condition and that
it is
properly grounded.
Ensure that the electrical outlet is equipped with a fuse with the
proper capacity.
The electrical outlet must be near this device and must be easily
accessible.
Inspect the power cable and ensure that it is undamaged.
Use only the power cable delivered with the scanner.
Turn the device off before plugging or unplugging any cable.