Newland NLS-MT37 User Manual page 72

Troubleshooting
Problem
Type Description
Unresponsive keypad or
Keypad
incorrect response to any key
entry.
Charging LED is OFF when
charging.
Noticeably short battery life.
Battery
Fully charged battery is
depleted after the terminal is
switched on.
USB USB communication failure
LCD
No display
Screen
Cannot switch on
System
System halted
Possible Cause & Solution
This problem may be caused by unreliable cable connection between
keypad and mainboard or keypad malfunction. Please contact
Newland after-sales service.
Ensure the AC adapter is plugged in properly.
Check the battery level. If the battery is almost depleted, recharge it.
Contact your dealer or Newland customer service center to replace the
battery with a new one
1. Ensure that the USB cable connections are secure.
2. Ensure that there is no contaminant inside the Micro USB port.
3. If the problem remains, please contact the after-sales service center.
1. Ensure the terminal is switched on.
2. If the terminal is in sleep mode, press the Power key to wake it up.
3. Check the battery level. If the battery is depleted, recharge it.
4. Ensure that the battery is properly installed.
5. Replace the battery if it is faulty.
6. If the problem remains, please contact the after-sales service center.
1. Check the battery level. If the battery is depleted, recharge it.
2. Switch the terminal on after using the AC adapter to connect it to a
power outlet. If the problem disappears, then continue to charge the
terminal.
1. The problem may be caused by bugs of downloaded apps. Ensure that
only reliable apps are used.
2. The problem may be caused by a sudden or unexpected power loss.
Remove and then reinstall its battery to reset the terminal.
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