Toshiba 3787DB - Page 59

Sc
HE
M
ATIC
DI
AG
RAM
MODEL
:
3787DB
(
4
/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
2.
All
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.
.
‘
wan:
in
di
;
;
.
4.
Make
sure
that
CONTRAST
and
COLOUR
controls
are
in
mid
position
and
CAUTION:
The
international
hazard
symbols
in
the
schematic
diagram
and
the
parts
list
designate
com
|
r
L
Mtr
ponents
which
have
special
characteristics
eet
for
safety
and
should
be
replaced
only
with
types
identical
to
ey
control
is
almost
in
maximum
position.
Set
other
controls
for
best
those
in
the
original
circuit
or
specified
in
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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