Table of Contents
Related Manuals for Casio IT-3000 - Win CE .NET 4.1 400 MHz
Summary of Contents for Casio IT-3000 - Win CE .NET 4.1 400 MHz
- Page 1 Handheld Printer Terminal Series User’s Guide Be sure to read “Safety Precautions” inside this guide before trying to use your Handheld Printer Terminal. After reading this guide, keep it in a safe place for future reference. PN410385-007...
- Page 2 • Other company names and product names used in this guide are trademarks or registered trademarks of their respective owners. Information in this document is subject to change without advance notice. CASIO Computer Co., Ltd. makes no representations or warranties with respect to the contents or use of this manual and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose.
- Page 3 Safety Precautions Congratulations upon your selection of this CASIO product. Be sure to read the following Safety Precautions before trying to use it for the first time. Markings and Symbols The following are the meanings of the markings and symbols used in these Safety Precautions.
- Page 4 • Should any foreign matter get into the Handheld Printer Terminal and its options, immediately turn off the power and contact your original vendor or an authorized CASIO service provider. Continued use creates the danger of fire and electric shock.
- Page 5 Operation of Wireless Data Communication Function Warning Interference with the Operation of Other Equipment (Using Wireless Data Communication Function) • Please follow the instructions provided by health care facilities when using your Handheld Printer Terminal in hospitals or other locations where medical equipment is in use.
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Page 6: Lcd Screen
Safety Precautions Caution Foreign Objects • Take care to ensure that metals or combustible objects are not inserted into the openings of the Handheld Printer Terminal and its options. Such objects inside of the Handheld Printer Terminal and its options create the danger of fire and electric shock. - Page 7 Lithium-ion Battery Pack Danger • Never allow the battery pack to become wet. Water can create the danger of battery pack heat emission, explosion, and fire. • Never use or leave the battery pack next to open flame, near a stove, or any other area exposed to high heat.
- Page 8 • Danger of explosion if the battery pack is incorrectly replaced. Replace only with same or equivalent type recommended by CASIO. Dispose of used batteries according to the CASIO instruction. • Should fluid from the battery pack accidentally get onto clothing or your skin, immediately rinse it off with clean tap water.
- Page 9 • Should the power cord become severely damaged (to the point that wires are exposed or broken), contact your original vendor or an authorized CASIO service provider about repair or replacement. Use of a damaged electrical cord creates the danger of fire and electric shock.
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Page 10: Safety Precautions
Backup Copies of All Important Data Caution • Note that CASIO Computer Co., Ltd. shall not be held liable to you or any third party for any damages or loss caused by deletion or corruption of data due to use of the Handheld Printer Terminal, malfunction or repair of the Handheld Printer Terminal or its peripherals, or due to the batteries going dead. -
Page 11: Operating Precautions
Operating Precautions Your Handheld Printer Terminal and its options are precision digital instruments. Improper operation or rough handling can cause problems with data storage and other problems. Note and observe the following precautions to ensure proper operation. • Do not continue operating the Handheld Printer Terminal when battery power is low. -
Page 12: Important
• The contents of this guide are subject to change without notice. • Note that CASIO COMPUTER CO., LTD. shall not be held liable to you or any third parties for any losses or damages arising from the use of this guide. -
Page 13: Regulatory Information
IT-3000M53E, IT-3000M54E2, IT-3000M55U, IT-3000M56U, HA-B61IO, HA-B30CHG Trade Name: CASIO Responsible party: Casio America, Inc. Industrial Handheld Division Address: 2700 Augustine Drive Suite 155, Santa Clara, California 95054 Telephone number: 408-737-6300 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. - Page 14 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom EFTA: Switzerland, Iceland, Lichtenstein, Norway Member states with restrictive use NONE Manufacturer CASIO COMPUTER CO., LTD. Brand CASIO Type IT-3000M53E, IT-3000M54E2, IT-3000M55E, IT-3000M56E are tested and found to conform with the essential requirements for protection of health and the safety of...
- Page 15 Terminal Equipment and the mutual recognition of their conformity and with the provisions of Annex III (Conformity Assessment procedure referred to in article 10). The technical documentation as required by the Conformity Assessment procedure is kept at the following address: Company CASIO Europe GmbH Address, City Bornbarch 10, 22848 Norderstedt Country Germany...
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Page 16: Table Of Contents
Contents Safety Precautions ..................E-1 Operating Precautions ................... E-9 Important ....................... E-10 Warranty and After Service ................E-10 Regulatory Information ................E-11 Before Getting Started ................. E-16 Handheld Printer Terminal System Configuration ........E-19 Options ......................E-19 General Guide ....................E-23 IT-3000M53E/M54E2/M55E/M55U/M56E/M56U ......... - Page 17 General Guide ....................E-54 Connecting the AC Adaptor and Connecting to a Computer ......E-56 Configuring DIP Switch Settings ..............E-58 Connecting Multiple Bridge Satellite Cradles (HA-B61IO) ......E-59 Bridge Satellite Cradle (HA-B61IO) Specifications ........E-60 Using the Cradle-type Battery Charger (HA-B30CHG) ......E-61 General Guide ....................
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Page 18: Before Getting Started
Before Getting Started Be sure to perform the following steps before trying to use the Handheld Printer Terminal for the first time. 1. When unpacking, make sure that everything is included. Open the box and make sure that all the items shown here are included. Handheld Printer Terminal PC Card Remover (2 pcs) Handheld Printer Terminal... - Page 19 3. Load the battery pack into the Handheld Printer Terminal. 1 Turn the battery pack cover lock switch on the side of the Handheld Printer Terminal to the “FREE” position. 2 Open the battery pack cover. 3 Install the battery pack(DT-9723LIC). Push it all way to the end inside the compartment until the eject button at the front of the battery compartment...
- Page 20 Before Getting Started 4. Hold down the power key for about one second to turn on the power. Start up the application you want to run. E-18...
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Page 21: Handheld Printer Terminal System Configuration
Handheld Printer Terminal System Configuration Options IT-3000 Series Bridge Satellite Cradle HA-B61IO Cradle-type Battery Charger HA-B30CHG Required AC Adaptor for Bridge Satellite Cradle / Cradle-type Battery Charger AD-S42120BE E-19... - Page 22 Handheld Priter Terminal System Configuration Battery Pack DT-9723LIC Formed Sheet Paper Holder HA-B93PH Splash Protect Cover HA-B92PCV Screen Protect Cover HA-B90DCV E-20...
- Page 23 AC Adaptor AD-S10095AE AD-S10095AU * See page 66. E-21...
- Page 24 Handheld Priter Terminal System Configuration Cables DT-887AXA Dsub 9-Pin (Female) RS-232C Cross Cable for Bridge Satellite Cradle DT-888RSC RS-422 Modular Cable for connecting Bridge Satellite Cradle DT-380USB USB Cable for connecting Bridge Satellite Cradle and HA-B80AX RS-232C Cross Cable for connecting Handheld Printer Terminal and PC E-22...
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Page 25: General Guide
General Guide IT-3000M53E/M54E2/M55E/M55U/M56E/M56U * The C-MOS Imager is only installed on the IT-3000M55E/ M55U/M56E/M56U * Magnetic Card Reader is only installed on the IT-3000M54E2/ M55E/M55U E-23... - Page 26 General Guide SD Memory Card Slot Slot for inserting SD memory card. This key can be assigned any function available. Program Key (L) IT-3000M55E/IT-3000M55U/IT-3000M56E/IT-3000M56U The default settings are as follows. This key is used to read bar codes and 2D code. Roll Paper Holder Roll paper is placed in this holder.
- Page 27 Battery Pack Turn this switch when opening and closing the battery pack Cover Lock Switch cover. Battery Pack Houses the battery pack inside. Cover PC Card Slot For connection of a separately sold PC card. Remove the cover to install a PC card. Hand Strap Hook Hook the hand strap here.
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Page 28: Key Functions
General Guide Key Functions Fn Key This key is used to switch the character input mode or make various settings in combination with other keys, or start up a pre-registered application. Numeric Keys These keys are used to input numbers and letters. (Cursor Key) Moves the cursor to the left. -
Page 29: Replacing The Battery
Replacing the Battery Your Handheld Printer Terminal uses two types of battery: a battery pack and a memory backup battery. A battery pack (DT-9723LIC) is used for the main battery. A backup battery is housed inside the Handheld Printer Terminal. This guide uses the following terms to refer to the batteries. - Page 30 Replacing the Battery To replace the battery pack 1. Make sure that the Handheld Printer Terminal is turned off. If the power is on, press the power key to turn it off. 2. Turn the battery pack cover lock switch on the side of the Handheld Printer Terminal to the “FREE”...
- Page 31 6. Return the battery pack cover to its original position as shown in the illustration, and then turn the battery pack cover lock switch to the “LOCK” position. Important! • When replacing the battery pack, make sure you do not leave the Handheld Printer Terminal without a battery pack for more than about 10 minutes.
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Page 32: Attaching The Hand Strap
Attaching the Hand Strap A flexible hand strap can be attached to the Handheld Printer Terminal. Hook A Hook B Hand Strap Attach the hand strap following the procedure described below. 1. Attach Hook B of the hand strap to the hand strap hook located on the bottom of the Handheld Printer Terminal. -
Page 33: Attaching The Neck Strap
Attaching the Neck Strap A neck strap can be attached to the Handheld Printer Terminal to keep it from being dropped while being carried. The stylus holder provided can also be attached. Adjust length here Neck strap rings Stylus holder Neck strap Mounting hooks... -
Page 34: Attaching The Stylus Holder
Attaching the Neck Strap Removal Procedure 1. Pull back the locking bar of the neck strap mounting hook and then release the hook from each ring as shown in the illustration. 2. Following the attachment procedure in reverse way, remove the neck strap rings from each neck strap mounting hook on the Handheld Printer Terminal and then push back the neck strap mounting... - Page 35 2. Remove Mounting Hook C. 3. Pass the stylus holder through the strap as shown in the illustration. 4. Fold back the strap after passing through Bracket C, and then fasten in the same way it was originally fastened with Bracket A and Bracket B.
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Page 36: Configuring Handheld Printer Terminal Settings
Configuring Handheld Printer Terminal Settings Calibrating Touch Screen Alignment Whenever you feel that touch screen response is poor or that the operations being executed do not match the location you are tapping on the touch screen, perform the following operations to calibrate the alignment of the touch screen. •... -
Page 37: Adjusting Display Contrast
Adjusting Display Contrast Perform the following steps to adjust display contrast to make display colors more vivid and easier to see. • Press the “Fn” key and then press the “2” key or “3” key after confirming that “F” is displayed in the lower right corner of the screen. -
Page 38: Using The Printer
Using the Printer The printer can print on roll paper (80 mm or 58 mm wide) or 80 mm wide formed sheet paper. When printing on formed sheet paper, use the paper holder (HA-B93PH) sold separately. When Using Roll Paper Installing the Roll Paper 1. - Page 39 5. Close the roll paper holder, slide the lock knobs on the left and right sides as shown in the illustration to align at the LOCK FREE “LOCK” position to lock the roll paper holder in position, and then tear off the protruding roll paper.
- Page 40 Using the Printer Attaching the 58 mm Paper Width Adjuster Attach the 58 mm Paper Width Adjuster inside the roll paper holder when using 58 mm wide roll paper. Refer to the procedure described in “Installing the Roll Paper” for information on opening and closing the roll paper holder.
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Page 41: When Using Formed Sheet Paper
When Using Formed Sheet Paper Attaching the Paper Holder Attach the separately sold Paper Holder (HA-B93PH) when printing on formed sheet paper. The Paper Holder is composed of four parts and four screws. In addition, a PC card cushion is enclosed to prevent the PC card from being dislodged by an impact and so forth. - Page 42 Using the Printer 5. Loosen the two screws shown in the illustration (the screws cannot be removed). 6. Open the cover (PC card slot cover) as shown in the illustration. 7. Loosen and remove the four screws shown in the illustration. Store the removed screws in a safe place so that they do not become lost.
- Page 43 10. Fasten Part A of the Paper Holder to the Handheld Printer Terminal. Press both ends of Part A to fasten to the Handheld Printer Terminal. 11. Insert the projections on both sides of Part into the grooves of Part B and fasten to the Handheld Printer Terminal with the four screws for the Paper Holder.
- Page 44 Using the Printer Loading Formed Sheet Paper Enable the Auto Loading function by selecting Start, Settings, Control Panel and then “Printing Control” of Printer Settings in that order before loading the formed sheet paper. 1. Insert the formed sheet paper all the way into the printer until it stops with the side to be printed facing downward.
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Page 45: Precautions When Using Printer
Precautions When Using Printer Printing Accuracy 1. During high-duty printing such as printing horizontal lines or printing while the battery remaining capacity is low, the printing speed may slow down to prevent excess current consumption that may cause unaligned printing for one dot or more. - Page 46 4. Paper scraps may accumulate and printing quality may decrease when the printer has been used for a long period of time. The thermal head must be cleaned when this happens. Contact your nearest CASIO distributor or an authorized CASIO service provider to have cleaning performed.
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Page 47: Using The C-Mos Imager (It-3000M55E/It-3000M55U/It-3000M56E/It-3000M56U Only
Using the C-MOS Imager (IT-3000M55E/IT-3000M55U/IT-3000M56E/IT-3000M56U only) 1. Turn on the Handheld Printer Terminal, position its C-MOS Imager reader port near the bar code or 2D code, and then press the Trigger Key (R or L). 2. The Handheld Printer Terminal reads the code by emitting laser and red lights. Indicator 2 (read operation indicator lamp) lights in green when the reading is successful. -
Page 48: Warning Label
Using the C-MOS Imager (IT-3000M55E/IT-3000M55U/IT-3000M56E/IT-3000M56U only) Warning Label IT-3000M55U/M56U Laser light is emitted from this port IT-3000M55E/M56E • This label is a warning label for Class 2 laser products that comply with IEC60825-1+A2:2001 CAUTION • Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. -
Page 49: Magnetic Card Reader
Magnetic Card Reader The Magnetic Card Reader comes as standard with IT-3000M55E/M55U/M54E2. Only use cards that are compatible with the ISO standards. The procedure for reading cards is described below. 1. Remove the cover as shown in the illustration. 2. Insert the card all the way into the reader as shown in the illustration, and steadily pass the card through the reader in the direction of the arrow. -
Page 50: Performing Data Communication
Performing Data Communication IR Communication IR communication can be used to transfer data between two Handheld Printer Terminals. When performing IR communication, orient the IR ports of both Handheld Printer Terminals so they are pointing directly at each other. Data communication is possible within a distance of 0 (in direct contact) to 1 m (max. -
Page 51: Bluetooth Communication
® Bluetooth Communication ® Bluetooth protocol can also be used to transfer data between two Handheld Printer Terminals. The two Handheld Printer Terminals should be no more than five meters apart (as long as there is nothing blocking the path in between). Important! Observe the following precautions to help ensure that data communication is successful. -
Page 52: Resetting The Handheld Printer Terminal
Resetting the Handheld Printer Terminal Resetting the Handheld Printer Terminal is the same as restarting a computer. Performing a reset causes all unsaved inputs and edits to be lost, but data that is already stored in the memory as well as all settings should be unaffected. Use reset to restore normal operation whenever the Handheld Printer Terminal operates abnormally due to misoperation or some other reason. -
Page 53: Performing A Full Reset (Initialization
Performing a Full Reset (Initialization) Performing a full reset initializes memory. This means that all data stored in the memory (RAM) is deleted and all the settings are returned to their initial factory settings. Perform a full reset whenever any one of the following conditions exists. •... -
Page 54: It-3000 Specifications
IT-3000 Specifications 1. Terminal Model: IT-3000M53E, IT-3000M55E, IT-3000M55U, IT-3000M54E2, IT-3000M56E, IT-3000M56U ® CPU: Marvell PXA255 Application Processor (400 MHz max.) Memory: 64MB RAM, 64MB ROM (user defined: Approx. 30MB) ® ® Microsoft Windows CE .NET operating system (English Version) Display: 3.5-inch, 240 ×... - Page 55 Character Size: Free double-width characters Generating Method: Black/white inversion, mixed character font printing 8. Card Slot PC Card Slot: PC Card Type I/Type II (3.3 V/5.0 V specifications) * Wake on function available SD Memory Card Slot: SD Memory Card 9.
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Page 56: Using The Bridge Satellite Cradle (Ha-B61Io
Using the Bridge Satellite Cradle (HA-B61IO) The optionally available Bridge Satellite Cradle (HA-B61IO) makes it possible to transfer system data and file data between the Handheld Printer Terminal and a computer using an RS-232C interface or USB interface. You can also use the Bridge Satellite Cradle to charge the battery pack installed on the Handheld Printer Terminal. - Page 57 System Status This lamp indicates whether the system is operating normally. Indicator Lamp This lamp indicates the system status and whether or not communication with the system can be performed regardless of whether or not a Handheld Printer Terminal is mounted. Off: System is not operating.
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Page 58: Connecting The Ac Adaptor And Connecting To A Computer
Using the Bridge Satellite Cradle (HA-B61IO) Connecting the AC Adaptor and Connecting to a Computer Use the AC adaptor available as an option for the Bridge Satellite Cradle to supply the power to it. Always make sure that the power is being supplied to the Bridge Satellite Cradle by the AC adaptor before performing any type of data communication operation with the Handheld Printer Terminal. - Page 59 4. Turn on the power. This causes the Bridge Satellite Cradle power indicator lamp to light red. 5. Place the Handheld Printer Terminal so that the infrared communication unit on the right side is faced firmly with the infrared communication unit of the Bridge Satellite Cradle.
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Page 60: Configuring Dip Switch Settings
Using the Bridge Satellite Cradle (HA-B61IO) Configuring DIP Switch Settings Removing the bottom cover of the Bridge Satellite Cradle exposes the DIP switches. You can change the ON/OFF settings of the DIP switches to set the configuration. Only set the DIP switches after first switching OFF the power. 1 2 3 4 5 6 7 8 Not used (Always off) Not used (Always off) -
Page 61: Connecting Multiple Bridge Satellite Cradles (Ha-B61Io
Connecting Multiple Bridge Satellite Cradles (HA-B61IO) Connect “C-OUT” of the Bridge Satellite Cradle connected to the host computer to RS-232C cable or “C-IN” of the next Bridge Satellite Cradle USB cable you want to connect. To host computer RS-422 modular cables (DT-888RSC) Important! You can use the optional RS-422 modular cables (DT-888RSC) to link up to eight... -
Page 62: Bridge Satellite Cradle (Ha-B61Io) Specifications
Using the Bridge Satellite Cradle (HA-B61IO) Bridge Satellite Cradle (HA-B61IO) Specifications 1. IR Data Communication Interface: IR interface Protocol: IrDA Ver. 1.1 Standard Synchronization: Start/stop synchronous, frame synchronization Transfer Rate: 9,600/115,200bps/4Mbps (4Mbps is possible during a USB connection with the host computer only.) 2. -
Page 63: Using The Cradle-Type Battery Charger (Ha-B30Chg
Using the Cradle-type Battery Charger (HA-B30CHG) The optionally available Cradle-type Battery Charger (HA-B30CHG) lets you charge the Handheld Printer Terminal’s battery simply by placing the Handheld Printer Terminal onto the charger. General Guide Front Right Back Bottom E-61... - Page 64 Using the Cradle-type Battery Charger (HA-B30CHG) Power Indicator This lamp indicates the power status and the mounting status of Lamp the Handheld Printer Terminal. Off: Power off Red: Power on, Handheld Printer Terminal not mounted Green: Power on, Handheld Printer Terminal mounted correctly These switches detect when the Handled Printer Terminal is Terminal Detect seated correctly on the Cradle.
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Page 65: Connecting The Ac Adaptor For The Cradle-Type Battery Charger
Connecting the AC Adaptor for the Cradle-type Battery Charger Use the dedicated AC adaptor for the Cradle-type Battery Charger to connect to a wall outlet. 1. After making sure that the Cradle-type Battery Charger power switch is turned off, plug the AC adaptor into the AC adaptor jack on the back of the charger. -
Page 66: Cradle-Type Battery Charger (Ha-B30Chg) Specifications
Using the Cradle-type Battery Charger (HA-B30CHG) Cradle-type Battery Charger (HA-B30CHG) Specifications 1. Charging Charging System: Fixed-voltage (with current limiter) Charge Time: Approximately 8.0 hours 2. Power Supply Power Requirement: AC adaptor (AD-S42120BE*) Power Consumption: 12V DC, approximately 2,100mA to Handheld Printer Output Terminal 10V DC 1,800mA (max.) -
Page 67: Using The Ac Adaptor (Ad-S10095Ae/Au
Using the AC Adaptor (AD-S10095AE/AU) 1. Turn off the power of the Handheld Printer Terminal by pressing the power key. 2. Open the jack cover ( ), and then insert the plug of the AC Adapter into the charging jack ( After connecting the power cable to the AC adaptor, plug the other end of it into an electrical outlet. -
Page 68: Specifications
Using the AC Adaptor (AD-S10095AE/AU) Specifications 1. Charging Specification Charging Method: Constant current/voltage Charge Period: Approx. 8 hours (with the power off) 2. AC Adaptor Model: AD-S10095A Input: 100V to 240V AC 50/60 Hz 0.4A Output: 9.5V DC 1A 9.5W 3. -
Page 69: Using Pc Cards
Using PC Cards PC card compatible with the PCMIA(Type I/II) standard can be installed in the PC Card slot on the Handheld Printer Terminal. Insert a PC card according to the procedure described below. Attachment of PC Card Removal Tape to a PC Card There are some PC cards that may be difficult to remove from the PC card slot PC card removal tape... - Page 70 Using PC Cards 4. Open the cover (PC card slot cover) as shown in the illustration. 5. Insert a PC card having PC card removal tape attached. Insert the PC card all the way in with the top of the card facing towards the top of the Handheld Printer Terminal.
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Page 71: Inserting A Pc Card (When Using The Paper Holder
Removing a PC Card Press the eject button on the left side of PC card slot with the stylus as shown by the arrow, and pull out the PC card while holding onto the end of the PC card removal tape. Inserting a PC Card (When Using the Paper Holder) Check the names of the parts of the Paper Holder before beginning work. - Page 72 Using PC Cards 3. After pushing on both ends of Part A and reattaching to the Handheld Printer Terminal ( ), remove Part B by removing the screws ( 4. Insert a PC card to which PC card removal tape has been attached. Insert the PC card all the way in so that the top of the PC card faces the top of the Handheld Printer Terminal.
- Page 73 7. While spreading apart both ends of Part A ), remove Part A from the Handheld Printer Terminal by lifting up Part A until the projections reach the upper edges of the grooves of Part B ( ), and then press on Part C and Part D from the left and right sides ( ).
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Page 74: Using Sd Memory Cards
Using SD Memory Cards SD memory card can be installed in the SD Memory Card slot on the Handheld Printer Terminal. Insert (or remove) an SD memory card according to the procedure described below. Inserting an SD Memory Card 1. Check that the power is off. If the power is on, always make sure to turn it off by pressing the power key. -
Page 75: Connecting A Bar Code Reader (It-3000M53E/It-3000M54E2 Only
Connecting a Bar Code Reader (IT-3000M53E/IT-3000M54E2 only) Connect a bar code reader to the RS-232C interface connector (8-Pin) on the Handheld Printer Terminal. Connecting the bar code reader 1. Check that the power is off. If the power is on, always make sure to turn it off by pressing the power key. -
Page 76: Attaching The Screen Protect Cover
Attaching the Screen Protect Cover Attaching the Screen Protect Cover to the Handheld Printer Terminal prevents the screen from being cracked or damaged when carrying. 1. Remove the two screws on the right side of the Handheld Printer Terminal. Store the screws in a safe place after they have been removed. -
Page 77: Attaching The Splash Protect Cover
Attaching the Splash Protect Cover Attaching the Splash Protect Cover to the Handheld Printer Terminal lets you use it even during inclement weather. inner cover Attach the Splash Protect Cover by following the procedure described below. 1. Press the ridged ( ) portions ( ) of the paper outlet cover while spreading... - Page 78 Attaching the Splash Protect Cover 5. Close the roll paper holder, slide the lock knobs on the left and right sides as shown in the illustration to align at the LOCK FREE “LOCK” position to lock the roll paper holder in position, and then tear off the protruding roll paper.
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Page 79: Using The Battery Pack
Using the Battery Pack Important! • Make sure to attach the contact cover provided when removing the Battery Pack from the Handheld Printer Terminal and storing. • If the battery pack has been left over unused for a long period of time, the capacity remained decreases due to spontaneous discharge or chemical decomposition by the battery pack itself.