Toshiba 3787DB - Page 51

SCHEMATIC DIAGRAM MODEL: 3787DB (2/5) OBSERVATION OF VOLTAGES AND WAVEFORMS NOTES:
1.
Voltages
read
with
VTVM
from
point
shown
to
chassis
ground,
line
voltage
220
1.
D.C.
resistance
value
of
a
principal
transform
volts, colour
bar
signal. Voltages
reading
may vary
+20%.
gram.
These
are measured
for
separated
from
t
2.
Ail
waveforms
are
taken
using
a
wide
band
oscilloscope
and
a
low
capacity
probe.
2.
The
circuits
are
subject
to*change
without
noti
3.
Waveforms
are
taken
using
a
standard
colour
bar
signal.
3.
&
:
Solder
links,
CAUTION: The international hazard symbols “\” in the schematic diagram and the parts list designate com- 4. Make sure that CONTRAST and COLOUR controls are in mid position and f
ponents which have special characteristics important for safety and should be replaced only with types identical to BRIGHTNESS control is almost in maximum position. Set other controls for best
those in the original circuit or specified im the parts list. The mounting position of replacements is to be identical picture.
with originals. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on page
3. Do not degrade the safety of the receiver through improper servicing.
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