Grass Valley LDK 7500 Technical Manual - Manual (Page 7)

Safety Instructions Technical Manual LDK 7500 + LDK 5490 Adapter 1-3
Symbol Colour Explanation
Red High voltage terminal at which
a voltage, with respect to an
other terminal, exists or may
be adjusted to 1000V or more.
Yellow/Black Live part.
Yellow/Black This marking indicates that the
operator must refer to an
explanation in the Instruction
Manual, or that a specific
component must be replaced
by the component specified in
the documentation for safety
reasons.
White/Black Protective earth (ground)
terminal.
Cathode ray tubes
Components marked
on the circuit diagram are
critical for safety and include those specified to comply
with X-ray emission standards for units using cathode
ray tubes and those specified for compliance with
various regulations regarding spurious radiation
emission.
When servicing units that use cathode ray tubes
(CRTs), the cathode ray tubes themselves, the high
voltage circuits and related circuits are specifically
chosen so that they comply with recognized codes
pertaining to X-ray emission.
Consequently, when servicing, replace the cathode
ray tubes and other parts with specified parts only. Do
not attempt to modify these circuits as any unauthorized
modification can increase the high voltage value and
cause X-ray emission from the cathode ray tube.
Handle the cathode ray tube only when wearing
shatterproof goggles and after discharging the high
voltage completely.