Hitachi C43-FD8000, Service Manual

Page: 4 / 250

4
SAFETY PRECAUTIONS
Fig. 1 X-ray shield plates
g)
X-radiation (TUBE) -The primary source of
X-radiation in this receiver is the picture tube. The tube
utilized for the above mentioned function in this
chassis is specially constructed to limit X-radiation
emissions.
For continued X-radiation protection, the replacement
tube must be the same type as the original. HITACHI
approved type.
When troubleshooting and making test measurements
in a receiver with a problem of excessive high voltage,
avoid being unnecessarily close to the picture tube
and the high voltage component.
Do not operate the chassis longer than is necessary
to locate the cause of excessive voltage.
h) X-radiation Shield -This receiver is provided with
X-ray shield plates for protection against X-radiation.
Do not remove X-ray shield plates A, B, C, or D
shown in Fig.1 unnecessarily, when troubleshooting
and/or making test measurements.
To prevent X-radiation, after replacement of picture
tube and lens, confirm these components to be fixed
correctly to bracket and cabinet, and not to be taken
off easily.