Xylem HandyLab 780 - Manual (Page 53)

53
pH Oxy Cond
Messages
Shows all active error and status messages as well as supplementary help texts.
Device Info
Shows the following device information:
• Model name
• Serial number
• Software version
• Hardware version
• Air pressure
• Battery
Device Test
A device self-test is automatically run in the background at regular intervals.
It checks the memory modules listed below. A green checkmark shows that
the test was successful.
• FLASH program memory
• FLASH data memory
• FLASH parameter memory
• RAM (working memory)
Display test
1) Select “Display test” and press enter.
2) The display lights up red, green, blue and then white.
3) Press any key to stop the test.
Keypad test
1) Select “Keypad test” and press enter.
2) Press all nine keys one after the other.
A green checkmark shows that a key functions properly.
3) Press any key to stop the test.
Information