Appendix D: Troubleshooting
Normal trouble
Possible Trouble
Possible Reason
1. The device is not turned on
2. External power supply failure
3. No battery or the power cable is not
Startup failure
connected
4. The battery charge is not strong
enough to power the device
1. The device is not turned on
Blank screen
2. The device is in standby mode
1. The paper is not loaded
Printer doesn't work
2. The printer cover is not fully closed.
3. The printer is too hot.
1. Specified paper is not used
Printer paper does not
2. The paper is installed improperly.
fit
3. Software failure
1. Specified paper is not used
Printer paper jam
2. The paper is installed improperly
1. The scanner is not connected to the
The scanner doesn't
device or they have poor contact.
work
2. Scanner breakdown
The device has
The battery charge is not strong
automatically shutdown
enough to power the device.
Prompt Information
Prompt Information
Printer Out of Paper
Battery Low
DEMO
Insufficient storage space
Critical shortage of storage space
There are too many log entries.
Critical shortage of space for log
entries.
SpO
Sensor off
2
SpO
No sensor
2
Trouble Shooting
1. Open the device
2. Make sure the external power supply system
works normally.
3. Connect the power cable or insert the battery
4. Connect the device to AC power supply,
recharge the battery
1.Turn on the device
2. Press the touchscreen of the device to
illuminate the screen
1. Load paper according to the user manual
2. Ensure the printer cover is fully closed.
3. Start the operation again after the printer has a
chance to cool.
1. Use the correct paper (width 48 mm length 15m)
2. Install the paper according to the user manual
or product diagram.
3. Turn off the device then start it again
1. Use the correct paper (width 48 mm length 15m)
2. Install the paper according to the user's manual
or product diagram.
1. Connect the scanner to the main USB port.
Ensure the connection is secure.
2. Change the scanner to one that functions
properly.
Connect the device to AC power supply to
recharge the battery.
Possible Reason
Printer paper is not installed or paper is used up
Medium level alarm means the battery life is less than 30min;; high level alarm
means the battery life is less than 5min.
The system is in demonstration mode.
The storage space is less than 10MB.
The storage space is less than 5MB.
Over 5000 items have been logged.
Over 7000 items have been logged.
The SPO
sensor is not on a finger or it is not placed correctly.
2
There is no SPO
sensor on the device.
2
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