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Horizontal Amplitude (H-SIZE) Adjustment
1. Tune in an off-the-air signal.
2. Adjust RV852
for the best horizontal ampli-
RV852
Vertical Amplitude (V-SIZE) Adjustment
1. Tune in an off-the-air signal.
2. Adjust
RV851
for the
best vertical ampli-
RvV851
Keystone Correction (KEYST) Adjustment
FD-42A
4.7V Adjustment
1. Connect
digital voltmeter
to Q601
collector.
2. Adjust
RV601
for 4.7V
reading
on
digital
voltmeter.
digital
voltmeter
iat
=a
Q601 collector
RV601
— D BOARD —
RV502
1. Tune in an off-the-air signal.
2. Adjust RV502 for the optimum picture.
x
Oo
x
RV853 | _
as
#
Rv4o1 | ~
Horizontal Frequency (H-F REQ) Adjustment
1. Short-circuit
between
ICSO1
pin
a3) and
ground with jumper wire.
2. Connect
the frequency counter to ICSO1
pin
6).
RV501
3. Adjust RV501
for a 15,734 kHz reading on fre-
quency counter.
4. After
the
adjustment,
remove
the
jumper
wire in step 1.
frequency counter
ae
RV802
Focus Adjustment
. Set the regulated dc power supply voltage to
4.8V.
. Tune in an off-the-air signal.
. Adjust RV802 for the best focus at the center
of the picture.
FD-42A
Luminance (BRT) Adjustment
1. Bridge
the pattern
according
to the mark
on
the neck of the picture tube.
mark
pattern connection
(R871)
3. Connect
the
digital
voltmeter
across
R860.
4. Adjust the RV802
for 9.0V dc reading on the
digital voltmeter.
If not, disconnect
pattern
connection
@
and
connect
®
and adjust
again.
digital voltmeter
%
ia
PUSH ON é
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