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C6000 9 C4000 12 H100 7 C70 7 C71 7 C72 8 C3000 11 C5000 9 C4050 8

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How to send devices for R&M by delivery?
a. Apply RMA list and non-commercial invoice from service center.
b. Please declare delivery as normal USB barcode reader with the piece of $20 per unit and do not send back the accessories especially batteries if they are working fine. Please send back by TNT if it is possible since this would be easier for custom clearance. Fill and send RMA request sheet and non-commercial invoice. And send the faulty devices no more than 3 pieces in one packet.
How to test and demonstrate RFID function?
a. Switch on the device.
b. Click Appcenter enter its page.
c. Select according RFID function to scan the cards.
How to check the reason of SIM card identification failure of C4000?
a. Make sure the SIM card can be supported by device.
b. Contact local operator to adjust internet service.
c. Check SIM card slot contact is broken or not, use alcohol to clean the contact to make sure there is no oxidation.
d. Contact sale representative or service center for R&M.
How to check the reason of WIFI connection failure for C4000?
a. Connect WIFI and start-up PING tool in Appcenter to check IP address.
b. Check the device can reach server or not.
How to check the reason of switch-on failure of C4000?
a. Dismantle the battery and change same type battery to switch on.
b. Connect the device with standard adaptor to charge the device and try to switch on, or use same type adaptor to charge.
c. Reflash operating system.
d. Contact sale representative or service center to send the device back for R&M.
How to execute screenshot of C4000?
a. Switch on the device.
b. Press and hold power button and button on the left together to capture the screen.
How to call-out function configuration of Appcenter of C4000?
a. Switch on the device.
b. Click Appcenter and enter its page.
c. Press button on the left and button on the right (below power button) together then loose.
d. Check all configurations and select functions with “check” sign.
How to restore factory settings of C4000?
a. Switch off the device.
b. Press and hold power button and button on the left for about 4 sec until the device switching on.
c. Select “wipe data /factory reset” with button on the left and press power button to execute reboot.
How to scan tag in Appcenter?
a. Switch on the device.
b. Click Appcenter to enter its page.
c. Click icon “UHF”.
d. Click button “Start” or pull the trigger on pistol to scan UHF tag.
How to scan barcode in Keyboardemulator?
a. Switch on the device.
b. Click Keyboardemulator to enter page “Function”.
c. Setup KeyCode value to 139.
d. Select option “Barcode2D(S)” with check mark.
e. Select “ON” to Enable Scanner.
f. Select “Test” to enter the page and scan barcode.
How to scan barcodes in Appcenter?
a. Switch on the device.
b. Click Appcenter to enter its page.
c. Click icon “2D(S)”.
d. Click button “Scan” or pull the trigger on pistol to scan barcode.
What are the different types of fingerprint sensors/readers?
Majorly there are 3 types.
Optical Sensors: use arrays of photodiode or phototransistor detectors to convert the energy in light incident on the detector into electrical charge
Capacitive Sensors: use an array capacitor plates to image the fingerprint
Ultrasonic Sensors: use very high frequency sound waves to penetrate the epidermal layer of skin.
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