Trouble Shooting; Precautions For Checking - Hitachi RAS-18FH6 Service Manual

TROUBLE SHOOTING

RAC-18YH6, 25YH6

PRECAUTIONS FOR CHECKING

WARNING
Remember that
voltage of 175 V is
applied to the 0V line
on the P.W.B. or the
like as shown in the
right diagram.
WARNING
When using an
oscilloscope, never
ground it.
Donít forget that high
voltage as noted in
the figure above may
apply to the
oscilloscope.
Power
inlet
Always keep your hands
and metallic things away
from the cabinet.
– 63 –
DANGER!
Donít install
the ground
line.