User Manual

14
On SD card
• After inserted a micro SD card, if GD22JT is has
no response, please take out and insert again.
• Do not remove SD card or turn off GD22JT during
data writing or reading to prevent damage to data
and to GD22JT.
• Make sure the SD card is unlocked before writing
or deleting data in the SD card.
• Backup your files and data before formatting the
SD card. Please format the SD card in FAT.