Amprobe TACH-10 Contact-NonContact-Tachometer - Manual (Page 15)

7 8
Battery Replacement
Replace your battery when low battery icon appears on
LCD. To replace the battery:
1. Open the battery compartment cover
2. Remove the old battery and replace it with a new
9V battery
3. Close the battery compartment cover
TROUBLESHOOTINg
1. Power on but no display
a) Make sure the time of pressing power key is > 0.2
second.
b) Check the battery is in place with good contact &
correct polarity.
c) Replace battery or move away the battery for one
minute and re-install.
2. Display disappear
a) Replace a new battery.
b) Disable the auto power off function before power
on for long time using.