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TECHNICAL
CAUTIONS
High Voltage
limiter
circuit
operation
check.
Turn off TV and connect
jig as shown in Figure 2. Adjust
jig fully counter-clockwise
for minimum
resistance.
Set the AC input to 120V AC and turn on TV.
Confirm
test pattern
on CRT is a usable
picture,
then
slowly adjust jig until the picture disappears
and TV shuts
down.
4. When
the limiter
circuit
is operating
properly,
High
Voltage will be less than 36.5 kV at 0.6mA when TV shuts
down.
5. Turn off set immediately
after checking
circuit operation.
6. Unplug
set for one
minute
to reset shutdown
circuit.
Remove jig and voltmeter.
Chassis
I
-
\
\
0
High voltage
connector
Deflection P.W.B.
High impedance
H.V. meter
I
FBT
(T702)
(Disconnect
the # @) pin of 1905 from +B line.
Connect
jig (15wZ VR) between
+B line and # @
pin of 1905)
+ 6 line c!d
1905 #l pin
POWER/DEFLECTION
PWB
+l!T
@
15KRVR
li
Jig
Fig. 2. Deflection/Power
P.C.B.
10
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