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PROBLEM SOLVING
7.
The Problem
The device
makes noise
when powered.
The surface of
the device is
slightly convex,
raised.
The surface of
the
device
warm enough.
MAINTENANCE AND SERVICE
8.
Actions required before starting maintenance
Warning of electrical voltage
•
Do not touch the mains plug with wet or damp hands.
Hold the mains plug of the device against the mains socket
•
when pulling out the power cord.
Allow the device to cool completely.
•
Warning of electrical voltage.
Only a qualified technician may perform operations that
require removal of the equipment cover.
Structural stress of
the thermal
insulator.
This is due to the
thermal expansion
of
material
1. Voltage is low.
heating
2. The device is in
is
not
a room with a low
temperature.
Reason
the
surface
- 11 -
Solution
If the noise
persists, claim the
device.
It's a common
phenomenon.
Don't worry about
it.
1 Install the voltage
regulator.
2.Wait a little longer
than usual.