
Screen touch no function
1. Touch calibration not
accurate
2. Wrong operation on
device
3. Touch screen broken
1. Calibrate the touch
screen for one or
three time and
retarting device.
2. Wipe data or reboot
device to delete all
user data(see bottom
operation 1)
3. Change new Touch
screen by local
service.
Wifi No Function
1. Device can’t connect to
wifi
2. Device connect to wifi
but no function
3. Device can’t scan wifi
network
1. Reset device and
connect to available
wifi again.
2. Check the MAC
address and input
the IP address (See
bottom operation 2)
3. WIFI lax inside or
broken,change or
repair by local
service.
MicroSD card not read
1. Device didn’t scan
successful MicroSD
card
2. Wrong data operation
before device finishing
scanning.
3. MicroSD card is inferior
or short.
1.Don’t open “tflash”
folder before finishing
scanning.
2.Restart or reset device
and insert MicroSD card
to scan again.
3.Change better or
format MicroSD card.
USB Disk not read
1. Device didn’t scan
successful USB Disk
2. Wrong data operation
before finishing
scanning
3. USB Disk not work or
shot
4. OTG cable broken
1. Don’t open
“scsi_sda1” folder
before finishing
scanning.
2. Restart or rest device
and connect USB
disk by OTG cable
again.
3. Change or format
USB disk
4. Change new OTG
cable