Troubleshooting / Cleaning and Maintenance
The LED lamps
The batteries
Replace the used batteries
(see: "Changing the Batteries").
The batteries
Check the correct polarity of the batteries
(see: "Inserting the Batteries").
Cleaning and Maintenance
CAUTION! Clean the precision engineer's LED magnify-
ing glass
Do not use corrosive or abrasive cleaners under any
circumstances.
Use a cleaning cloth for cleaning the device. Moisten it a
little if necessary.
Use a dry, fluff-free cloth for cleaning the lens.
Never immerse the product in water or other liquids under
any circumstances.
If you are not using the device, store it in such a way that
the precision engineer's LED magnifying glass
scratched. Wrap the product in a soft cloth.
48 GB/MT
do not light up.
20
are flat.
21
have been inserted incorrectly.
21
very carefully in order to avoid scratches.
1
with new ones
21
21
is not
1